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HomeMy WebLinkAbout20191281 Ver 1_NRCS Soil Survey_20190924O ,� L SURV EY Wake Count Nort roli'n Issued November 1910 UNITED STATES DEPARTMENT OF AGRICULTURE Soil Conservation Service In cooperation With NORTH CAROLINA AGRICULTURAL EXP02aNT STATIJ IMajor fur this WE .% Jcyne ira. lu'U1,texlod 15217-15, numos =d �, itatm �Ve�4,� -1 ill I G6. Unless ludkat(,�-J, �- ments in the puhficmtio,�� reff-ez wZo Cou4it,;'m;� ill, th<� idy at �h,,�� t`mp the mirw-,,y was, in, progre. A cri, 1 -1 Tills suv,��y w�wsi-u, Could'y aas lu.aJo cooperalively by th"', SIA 'Serdee tion, It is gi pal�t of th�� technical and the N��fth Cia"roh7la A'gdcaliun�_A 'Exper,tacm a , t, a"48ika51.w fumi�,_hed ',u ike Soil and Water Cau,,,tuvaiiknn Distriel. by the Sall Cuw,em.Aiou 1!Ar11(-3` ao- mduced. uipie� UF tho printed amp ia 1116i pmKlcal"imn call be nmde by or t-IR11 purch-,Ued. m in&vleual o-dcr. fro ra the Cartu- 1, �eevnflojj Servjc��, USI)A, D�C 20250. �raphw IT Ater, soft Cans F10V V T 0 USE THIS SSOIL SUR EY TIIIS SOIL SUFLIVEff of Wftke Coulf- ty"INI.C, couUilns inforumdioll ulmt Can be applied in rmnaging fftrnii; tind, wood.- larldsg in Rele" ctinfr _qi for s roads, Mortals, and imiitiings or otlier stril G, � ures, an(l in esthwufing suitability of traot"S of hind Tor ag"ricultu-'re, hldustry,reerzAmlon, and., other uses. Elm All the soils of Wake, Countly are `l:how i i on the det-'ailed map at. the &ick of this survey This map com,,ists of many sheets, ma,de iroin "Lerlef photogra-)h% Each shNt is --numbered to com,-sponcl Willi T11n1l1)o-tn shown on the Lidbx- to Alap On each shat o-� the dehtiled uuq), :aril areas aro outlim'O amd are identified by 1. All ;a spas xi.iarked with tho same BVIIII)o1 4tre the samci kindof soil. The soil sruix)l is inside the area i` there is emough room; othexwise, it 9s out%ide and a jjoin` er shows bere the symbol belongs. FmdIng cmd An kdormaffian Tha, "Gnide to 17m bo, usail to fird inifornuitiou in dais This gruidelists aill of 1 -he soils 01 in alphlibefle"al ordor 1)�, uiag) R�'nlbole H, s1lows the page whore; L�,'w7d kilid- of soil is degoribed aL al w, tho p, -e for fliic.,., pa­ bility, ruu't, woodhind gp.�oUp,, grou') ill Wliieli flio waif hall' bei Ft errIvidual. cxflorod Inapq �sh'ml'img tho, rektive suitability or dleggrk,�,'of lluutut-o-n of soils for wally spoci,fie- C'U,71 be developed. by using the soil mals and tho infOrmation7in the text. Translucent ma- teria.1 can lam; us(xl as lu), ove.flay over the Boil Y.11'ap aIud colored to show soils that have the sturio limitabi.01"Is or Suitability. For munple, walls t. mat havo a slight Ift.111- t�atlon for a givcrj- use (mu be color green, t1lose with ai'l Moderate limitatiou =1 1* oolored. ye-111mv, and those with. a severe 11mitaLlon can be colored red. ry amurs and those w7to work wit7t fam- e,r8 oi n lem rn 11bout use. ctnd management of the said from the it descriptions and from tine dismiKs-ion. of the utpability uultx,.;. Foresters and otAera cext refer to the sec- tion of tlie Soils as"Toodland," vvbero tLe soils ofthe e.otmty are Me al a,ceord_ ing to tlleh', ,suitability for trcvB. Game v,,unagcrs. aports7imn, a othem Concenar!"I'a,ildi 'It"ildlife, Will find b1forinft- tion nbout soils and wildlife in tho sadion "L.so of the, Soils for Wildlifo." Aln ',nfwrs a, " p I -qi tarred (mildopx will find, under IM(1311k�erfllg U-sts of the Soils t, n - abie's that I , deatriptions of the engineerk propi-SILVzol's of the soils in the county an thiitauia(, ,(Al- that aftect engj_ 111.(,.�'IiAlllg, practices and �.Axucf,.Ures, Sriomlists and others car: re�id about.- how 1"he � ils Formed anA hoTv they aro class& fied in the, section "Fornmfioli and Cim- s, Viou 0-1` soils." NewooTmrs to 'I'Vake County may be es , v , )ecially i.uteresk,,d in the seoLoi-, eral Soil. MAP," idle l.,e bruad patterns of ,4oih; carr o described. They may 0, so 1)8 jxj_ ter(�B'Wxd ill the sectio -,,i ",. ddltional rftet.w A -bout tile, U-. PRMNS,". Vor LAu by Uhn, 1' m Doca menf,i TY -3. GF", I ruwat Prlflt-zOlz Offlef, W�L�I,Jmj"Ion P',C��4�02, Issued November 1970 Page Page How this survey was made___ -- _-- __ 1. Descriptions of the soils—Continued General soil map___._.____._.____ __,-__.____.___ 2 Rains series --------- .------------------------- 51 1. Creedmoor-•White Store association_ _. _ _ _. _ .... 2 Roanoke series_ _ _ _ _----- ------------------ ._ ._ 52 a. 'Itlyodan-GI'a,iiiillc'..Creedmoor association_ 3 Swamp - -- -- _ _ _ _ _ _ _ _ _ _ _ _ _ _ .- - - -. _ ._ 52 3. Herndon--Georgovilleassocia,tion__.---._.__._.- 3 Troup series__..-.__.__.. ___-------------.. 53 4. Applins Durham association......._-_.-____-_- 4 Vance, series---------------._--------___--_ _.._._..._.._ 53 5. Cecil-Appling association ----- _------ ._--- 4 Wa rale series--------------- 55 6. Cecil association __.___.._-__----------------- 4 Walleeseries.-_---.--------------- ------------- 56 7. Cecil-Madison assooiatlon_ _._..__._..---.------- 5 Wake series--------- ------------.--- 5 S. Appling association --- ______-----_--------- 5 Wedowee series------------------------------ 57 9. Wagriam-Norf olk association- _--------____-- 6 Wehadkeeseries __.__.------------------------- 59 10. Alaplii g-.Louisburg-i�Vedoireo association--- 6 White Store series.--.. -------------------------- 60 Descriptions of the soils..__. _ _ ... _ - - - - - _ ._ ._ _ _ -_ _ ._ . __ ... ,. 6 IV, ilkes series _ _ m _. _.... _ _. -_ _ _ _ ._ _ _ _ _ - - - - - - - - ._ - -_ - ._ .... 03 Altavista, series_______..,......--.------..____.__.__._._. _ 8 Worsham series ____...._.....__...._..._..--.----_----___-. 64 9 Use and management of the soils ----------- 65 Augusta series- _ ._ _ _........_ ..... _ - _ _ - _ -- _ _ _ _ _ _ _ _ _ _ _ .- _- 13 Use of the soils for crops and pasture-... _. _ - - - - - - 65 Bibb series__.---------_--__________________.___ _ 14 Capability groups of soils- __------------------ 65 14: Estirnatedtiields_____._-_______....._____._._____ 73 Buncombe series-.- --------------------- 14 Use of the soils as woodland- _...______-.-___._ 76 Cecil series-_---------__._.--------------- ---- 15 Woodland suitability groups-__.._------ __-- 77 Chowaaclaa, series.-_-_---_ ----------------------- 18 Use of the soils for Nvildllfe.___ _. 84 Colfax series_..___..._.----------_______. __.-_-__._ 19 Wildlife suitability groups____.__._.._.__.-----..-_. 85 Congaree series__.__.___._.__.------------------- 19 Engineering uses of the soils...___.._--.----_ -_ 87 Creedlnoor series --------- _---------- ------------ 20 Engineering classification of soils_..___ 87 Durham series_......_.._.__------------------------ 23 Soil test data -------.----...._.__.__--___.__------. 94 Enon series_------------- -------------.-.---__--- 24 Engineering properties of the soils-.______ _.___ 95 Faceville. sones__._.__.._.---------------------- 26 Engineering iatarpretations_-_.._.._.---.-------- . 108 Georgeville series__.. _ _ _ _ _ _ _ - - _ _ _ _ _ _ _ - _ - _ 27 Formation and classification of soils-_ _ _ _ _ _ _ _ _ _ _ 109 Goldsboro series ----------------------------- 29 Formation of 110 Gran =illeseries ________-- - _.__-- ------------ 30 Parent material....----------- .---------------- 110 Gulliedland _..___._._...._..----------------------- 32 Climate --------------------------------------- 110 _-__-------_----.----- .._- 32 Plant and animal life ----------- .---------_ 111 Herndon series-.- --------------------------- 34 Relief_----------_------------_-------_-___- 111 Lloyd ------------------------- 36 Time- Louisburg aeI°ies_ -- _ _ ._ . _ - _ _ _ _ .- - _ _. 37 Classification of soils 1..ynobburg series _ _ - _ - - _ _ - _ - _ - _ 39 Additional facts about the county, _ -. 7.12 40 Physiography, relief, and drainage- __ _ _ _ 113 Madison series-- -_ _______ - _ __ 40 Water supply._._.._ __ __. _-._-_-----_-_--_ 113 Van t,aolde series-, ------------------------- 41 Cllimate.------------.---------.-, 113 XIayodan series_--....__._-.-------__-___._...-- ---___ 42 History and development_ --------------------- 116 NoI°folk series____---------------------- _ 46 Commerce and industry-.------.--- ----------.___-- 116 Orimgeburg series.... ----------------- 48 Literature cited_-------_-----_--- 117 Pinkston series_.._-___--_--------------------._ 50 Glossary -------------- _.---__-_ 117 Plummer series ------------------------------- 50 Guide to mapping units------.--.----__.-- Following 11.8 Issued November 1970 SOIL SURVEY OF WAKE COUNTY, NORTH CAROLINA BY JOEL W. CAWTHORN, SOIL CONSERVATION SERVICE SOILS SURVEYED BY JOEL W. CAWTHORN, VAN S. JENKINS, RONALD B. STEPHENS, WILLIAM I. SHOPE, R. CLYDE PLEASANTS, DANIEL G. SPANGLER, GORDON H. ROBERSON, CARL F. EBY, O WEN R. DEMO, JAMES R. WOODRUFF, AND JOHN H. LANE, SOIL CONSERVATION SERVICE, ANIS BY JOHN P. BRYANT, ROBERT M. CRAIG, CHARLES D. SOPHER, AND DON W. GOSS, NORTH CAROLINA AGRICULTURAL EXPERIMENT STATION UNITED STATES DEPARTMENT OF AGRICULTURE, SOIL CONSERVATION SERVICE, IN COOPERATION WITH THE NORTH CAROLINA AGRICULTURAL EXPERIMENT STATION AKE COUNTY, in the east -central part of North Carolina (fig. 1), has a land area of 864 square miles. Raleigh is the county seat and is the capital of the State. The county had a population of 169,082 in 1965. The population of Raleigh was 93,931 in that year. The county is mostly in the Piedmont physiographic province, but a small area in the southern part is in the Coastal Plain province. The parts of the county that lie north and west of Raleigh are rolling to hilly and con- tain major drainageways that are bordered by steep slopes. The areas east and south of Raleigh are gently sloping to rolling and contain drainageways that are bordered by moderately steep slopes. Farming is a leading enterprise in the county. The comparatively short, mild winters and the long, hot sum- mers permit a wide range in types of farming and in choice of crops. Tobacco is the chief cash crop, and contributes a major part of the farm income. The rest of the farm income is derived mostly from sales of cotton, soybeans, corn, small grains, and vegetables, and from poultry and eggs, dairy products, hogs, and beef cattle. Well -diversified industries, government, educational in- stitutions, and wholesale and retail outlets also contribute substantially to the economy of the county. In 1964 approximately 100,478 acres was in field crops and 31,162 acres was in pasture.' The rest of the acreage was largely in trees, though some areas were in cities or community developments and about 5,100 acres was in State parks. The parks are used for camping, picnick- ing,, boating, swimming, hiking, fishing, and nature study. The soils of Wake county are mostly strongly acid and strongly leached; only the Enon soils have a, base satura- tion of more than 35 percent. The. soils are generally low in natural fertility and in content of organic matter. Except in areas where suitable applications of lime and fertilizer have been made, the content of calcium, phos- phorus, and potassium is low. About 63 percent of the acreage consists of well drained soils; about 13 percent, of moderately well drained soils; about 6. percent, of somewhat poorly drained soils; 8 percent, of poorly drained or very poorly drained soils; and ' 10 percent, of somewhat excessively drained, droughty soils. ' Statistics from records of the U.S. Bureau of. alio Census. How This Survey Was Made Soil scientists made this survey to learn what kinds of soils are in Wake County, where they are located, and how they can be used. They went into the county knowing they likely would find many soils they had already seen, and perhaps some they had not. As they traveled over the county, they observed steepness, length, and shape of slopes; size of streams; kinds of native plants or crops; kinds of rock; and many facts about the soils. They dug or bored many holes to expose soil pro- files. A profile is the sequence of natural layers, or hor- izons, in a soil; it extends from the surface down into the parent material that has not been changed much by leaching or by roots of plants. The soil scientists made comparisons among the pro- files they studied, and they compared these profiles with those in counties nearby and in places more distant. They classified and named the soils according to nationwide, uniform procedures. To use this survey efficiently, it is necessary to know the kinds of groupings most used in a local soil classification. Soils that have profiles almost alike make up a soil series. Except for different texture in the surface layer, all the soils in one series have major horizons that are similar in thickness, arrangement, and other important characteristics. Each soil series is named for a town or other geographic feature near the place where a soil of that series was first observed and mapped. Appling and Norfolk, for example, are the names of two soil series. Figure 1 Location of Wake -County.in North Carolina. X so7L SURVEY All the soils in the United. States baving the, sane, series name are essentially alike in those characteristics that affect, their behavior in. the natural landscape. Soils of one series can differ somewhat, in texture of the surface soil and. in slope* or some other characteristic that affects use of the, soils by man. Many soil series contain soils that differ in texture of their surface layer. According to such differences in tex- ture, separations called soil types are made. Within a. series, all the soils having a surface layer of the same tex- ture belong to one soil type. Cecil sandy loam and Cecil clay loam are two soil types in the Cecil series. The dif- fereitce in texture of their surface layers is apparent from their names. Some soil types vary so inuch in slope, degree of ero- sion, or some other feature, affecting their use, that practi- cal suggestions about their management could not. be made if they were shown on the soil reap as one unit. Such soil types acre divided into phases. The name of a soil phase indicates a feature that affects management. For example, Cecilsandy loam, q to G percent slopes, is one of several pliases of Cecil sandy loam, a soil type that ranges from gently sloping to steep. After a guide for classifying and naming the soils had been worked out, the soil scientists drew the, of the individual soils on aerial photographs. These photographs show woodlands, buildings, field bor- ders, trees, and other details that greatly help in drawing boundaries accurately. The soil map in. the back of this survey was prepared from aerial photographs. The areas sho-Nvn on a soil map are called mapping units. On most maps detailed enough to be useful in planning, management of farms and fields, a mapping unit is nearly equivalent to a soil type or a phase of a soil type. It is not exactly equivalent, because it is not practical to show on such a. map all the small, scattered bits of soil of some other kind that have been seen within an area that is dominantly of a recognized soil type or soil phase. In preparing some detailed inaps, the soil. scientists havea problem of delineating areas where different kinds of soils are so intricately mixed., and so small in. size that it is not practical to show them separately on the map. Therefore, they show this mixture of soils ,is one mapping unit and call it a, soil complex. Ordinarily, a soil complex is named for the major kinds of soil in it, for example, Louisburg -Wedowee complex,, (3 to 10 percent. slopes. Also, in some places two or more soils are snapped in a, single unit, called an undifferentiated soil group or undifferen- tiated unit, if the differences between the soils are too small to justify separation, though these soils occur sepa- rately. An example of such a, unit is Weliadkee and Bibb soils. Furthermore, on most soi.l maps areas are shown where the soil material is so Nvet, rocky, shallow, fre- quently worked by wind and water, or altered by man that it cannot be classified by soil series. These areas are shown on the map like other mapping units but are given descriptive names, such as Gullied land, Made land, or Swamp, and. are called land types. While a soil survey is in progress, samples of soils are taken, as needed, for laboratory measurements and for engineering tests. Laboratory data from the, same kinds of soils in other places are assembled. Data on ,yields of crops under defined practices tare assembled from farm records and from. field or plot experiments on the same kinds of soils. Yields udder defined management are esti- mated for all the soils. But only part of a. soil survey is clone when the soils have been named, described, and delineated on the reap, the laboratory data assembled, and yield estimates made. The mass of detailed information then needs to be organ- ized in such a way that it is readily useful to different groups of readers, among these farmers, managers of woodland, engineers, and homeo`vners. Grouping soils that, are similar in surta,bihty for each specified use is the rriethod of organization commonly used in the soil sirs veys. On the basis of yield and. practice tables zinc[ other data, the soil scientists set up trial groups. They test these groups by further study and. by consultation with f<ai°niers, agronomists, engineers,, and others, and then adjust them according to the results of their studies and consultations. Thus, the groups that are finally evolved reflect; up-to-date knowledge of the soils and. their behav- ior under present methods of mise anal. management. AMMIMMOMFUM The general soil mals at the back of this soil survey shows, in color, the; soil associations in Wake Courity. k soil association is a lanclsea,pe that has a distinctive pro- portional pattern of soils. It normally consists of one or more major coils and at least one minor soil, and it is named for the major soils. The soils in one association may occur in another, but in a_ different pattern. map showing soil associations is useful to people who want a general idea: of the soils in a county, who want to compare differe:tit parts of a county, or who wain to know the location of large tracts that are suitable for a certain kind of farming or other land use. Such a map is not, suitable for planning the rnana-gement of a farm or field, because the soils in any one association ordinarily- differ in slope, depth, stc)ni.siess, drainage, and other elfin acteristics that affect iria.nagenieirt. Ten associations are In Wake County. These erre dis- cussed iii the :following page& 06,n,tly sloping to N ly, deeps arra moder°atcZy decp, 'n,od- e;ratedy ugcil crani,;d soils that have a v enj firm, clay-ey 8uebsoil; derived from sandstone, Orale, anis anmdstane This association consists of gently sloping soils on broad ridges and of hilly soils near drainage -ways in the uplands. The areas are dissected by unI .T streams that form a dendritic; drainage pattern. The associati.ori occu- pies about 15 percent of the county and is in the western part. The major soils in tl-xe association are the Creedrnoor and White Store, whi.el- formed in material that weath- ered frorn sandstone, shale, and mudstone of Triassic age. The Cr eedrnoor se)ils, which are moderately well drained and deep, make up about 50 percent; of the asso- ciation. They have a sandy loa.sn or silt loam surface WAKE COUNTY, NORTH CAROLINA layer, a friable silty clay loam to sandy clay loam upper subsoil, and a very firm, very plastic clay lower subsoil. Moderately well drained, moderately deep White Store soils make up about 30 percent of the association. They have a sandy loam, silt loam, or clay loam surface layer over a subsoil of very firm and very plastic clay. Minor soils are the Mayodan, Granville, Pinkston, Chewacla, Wehadkee, Altavista, Wahee, and Augusta. Except in the steep areas, most of the soils have been cultivated. Now, about 70 percent of the association is in forest and the rest is still cultivated or in pasture. The farms are generally less than 100 acres in size, and most are operated by the owner on a full-time basis. The grow- ing of tobacco and, to a lesser extent, the raising of live- stock are the main farm enterprises. Some commercial companies own woodlots within the association, and these forestry farms are much larger than the farms where field crops are grown. The soils of this association are suited to tobacco, corn, cotton, and small grains. In many places they have a high content of exchangeable aluminum, however, and if they are not properly limed, some crops grown on them show signs of aluminum toxicity. In areas that are not severely eroded, the soils are fairly easily tilled and crops grown on them respond favorably to good manage- ment. The soils are subject to erosion. The Creedmoor, Mayodan, and Granville soils are the ones most used for tobacco. The major soils of this association have severe limita- tions if used as absorption fields for septic tanks. Also, their very firm or very plastic subsoil makes them poorly suited to road construction or as support for foundation footings of large buildings. Wells in this association generally yield about 3 to 5 gallons of water per minute, which is not enough for industrial use. The amount of surface water available varies considerably, according to the season. 2. Mayodan-Granville-Creedmoor Association Gently sloping to moderately steep, deep or moderately deep, well drained and moderately well drained soils that have a subsoil of friable sandy clay loam to very firm clay; derived from sandstone, shale, and mudstone This association is dissected by many streams that form a dendritic drainage pattern. It is on uplands and consists of gently sloping soils on broad ridges, and of moderately steep soils near the major drainageways. The association is in the western part of the county, near the towns of Apex and Friendship and west of Holly Springs. It occupies about 4 percent of the county. The major soils are the Mayodan, Granville, and Creedmoor. These soils have formed in material that weathered from sandstone, shale, and mudstone of Tri- assic age. Well -drained, moderately deep or deep Mayodan soils make up about 55 percent of the association. They have a surface layer of sandy loam or gravelly sandy loam to silt loam over a subsoil of firm silty clay loam to clay. Well -drained, deep Granville soils make up about 15 percent of the association. They have a surface layer of sandy loam and a subsoil of friable sandy clay loam to clay loam. Moderately well drained, deep Creedmoor soils make up another 15 percent. They have a surface layer of sandy loam to silt loam, an upper subsoil of friable silty clay loam to sandy clay loam, and a lower subsoil of clay that is very firm when moist and very plastic when wet. The rest of the association consists mainly of minor areas of White Store, Altavista, Augusta, Wahee, Chewa- cla, and Wehadkee soils. Most of the soils that are less than moderately steep have been cultivated. Now, about half of this association is in cultivated crops or pasture and the rest is in forest. The farms are generally less than 100 acres in size, and most are operated by the owner on a full-time basis. Growing tobacco, raising cattle, and growing trees are the chief farming enterprises. The soils are suited to tobacco, corn, cotton, alfalfa, lespedeza, and small grains. They contain a large amount of exchangeable aluminum, however, and some crops grown on them show signs of aluminum toxicity, unless the soils have been properly limed. The soils are easily tilled, and the crops respond well to good management. Erosion is a hazard. In some places in this association, the soils have se- vere limitations if used as absorption fields for septic tanks. Also, the soils that have a very firm or very plas- tic subsoil are of limited use for road construction or as support for foundation footings of large buildings. Wells in this association generally yield about 3 to 5 gallons of water per minute, which is not enough for industrial use. The amount of surface water varies a great deal, according to the season. 3. Herndon-Georgeville Association Gently sloping to moderately steep, deep, well -drained soils that have a subsoil of friable silty clay loam to clay; derived from phyllite (Carolina slates) This association is in the uplands. It is made up of gently sloping soils on ridges, of gently sloping to strongly sloping soils on side slopes near small drain- ageways, and of moderately steep soils on side slopes near large drainageways and streams. The association is dissected by many streams that form a dendritic pattern. In the western part of the county, it consists of a long, narrow area, extending from the town of Holly Springs to Cary. In the eastern part, it occupies a small area east of the town of Zebulon and extends to the Johnston and Nash County lines. This association occupies about 2 percent of the county. Well -drained, deep Herndon soils occupy about 45 per- cent of the association. They have a surface layer of silt loam and a subsoil of friable silty clay loam to silty clay. Well -drained, deep Georgeville soils make up about 40 percent of the association. They also have a surface layer of silt loam, but their subsoil is firm silty clay loam to clay. The rest of the association consists mainly of minor areas of Appling, Cecil, Wilkes, Enon, Chewacla, We- hadkee, and Bibb soils. Except for the moderately steep areas, all of the soils of this association have been cultivated within the past 100 years. Now, about 80 percent of the association is in forest, and the rest is used for cultivated crops or pasture. SOIL Sa RITY The fauns are generally about 200 acres in size and are operated by the owner. GrossMg tobacco and raising cat- tle are the chief farming enterprises. The, soils of this a sociation are satited to tobacco, corn, cotton, alfalfa, lespedeza, and snia.11 grains. They are fairly easy to till„ and crops growls ova them respond well to applications of lime and fertilizer. Erosion is a hazard. The Herndon amend Georgeville soils have niodointe limitations if used for absorption fields for septic talalrs. They have no speciiil limitations if used for road con- st muhon or as support. for foundation footing; of large bu i 1 d iiigs. Wells adequa.to for indu: -,trial Ilse cast be located withiia this association. Yields of 10 to 1CS gallons of water per minatte are common from private wells. The quantity of surface water is good, ,asci the supply is generally' coil- stant, except sharing periods of extreme drought. 4. Appling-Durham Association Ocntly s7,opzny to 37opainc(/, deeps, urll-dr(drrd soils that Aare a strb'SOW of trur.hlr stfyuly elms/ 7o,7-nb to clay; derived mostly from granite, gneiss, and schist This association consists of gently sloping and slop- ing soils on ridges and side slopes in the uplands. It occazpies tsvo long, narrow areas in the eastern part of the. county. The areas are dissected by luny small sta•eanis, that. form a dendritic drainage pattern. The association occupies about 2 percent of the county-. A major part of the association consists of Appling and Durham soils, which formed in material that weath- ered from granite and gneiss. Appling soils make up about- 50 percent of the association. They are deep aind well drained and have a surface, layer of sandy loam, gravelly ranch' loam, or fine sandy loam. Their- subsoil is firm clay loam. to clay. Deep, well -drained hurham soils malae up about 40 percent. Thur lum,e a. surface. layer of loamy sand and a Subsoil of friable sanely clay loam to clay. The rest of the association consists mainly of minor areas of Vance, Colfax, Worsham, Mantaclaie, Congaree, Chewa.cla, Wehadkee, and Bibb soils. :Most of the aa,reas, except those thatt are wet, have" been cultivated Nxith,in the past 1.00 years. I`lo , about 85 per- cent of this association is cultivated and the rest is in forest. The fauns are generally more than 100 acres in size and are operated by the owner. Tobacco, cotton, (101,11, soybeans, and small grains. are the chief sources of farm income. The soils are suited to corn, cotton„ soy leans, lespe- dem, small grain,, and pastaare, a.nd they are especially smell suited to tobacco. They acre easily tilled, and crops grown on them respond well if suitable applications of lime and fertilizer are made. The Appling and Durham soils have .moderate limi- tations if used as absorption fields for septic tanks. They have, no special limitations if wised for road constructioli or as the support of foundation footings for large build- ings. Wells adequate for industrial use can be located within this association. Fields of 10 to 15 gallons of water per minute are common froin private wells. Thi, quantify of surface water is good, and the supply is fairly coimsiant, except during periods of extreme drought. .5. Cecil-Appling Association G'cra.t7y s7opaing to stcep, dcop, ?e,(11-draineel soils that lz.av a subsoil of f arta c7.cx.y loam to clay; dcrit,rid mostly fro'In granite, f/vclss, and selb'14 This association occupies several large areas on the uplands of the county. It; consists of gently sloping soils on. ridges and of sloping to steep soils near draimtgesvaays and strearns. The areas are. dissected by many streaarrts that form a dendritic, drainage pattern. The association occupies about 16 percent of the county. Deep, well -drained Cecil and Appling soils make up a major part of the tassociation. They have. formed it). material that weathered from gneiss azmad scla'ist. Some ,areas of Cecil soils are moderately steep or steep, but, the Appling soils are, less sloping. The Cecil soils make up about 35 percentof the also. ciation. They have a surface layer of saud'v loam, gra- velly sandy loam, or clay loain and a subsoilof red, firm clati. Appling soils make up about 30 percent of the associa- tion. They have, a surface layer of sandy loam, gravelly sandy loam, or fine sandy loam and a subsoil of firm clay loam to clay. Alinor soils make up the rest of the association. They are the Wedowee, Louisburg, Colfax, Worsham, Cheiva,- cla, Congaree, lVehadkee, Bibb, and Altavista. Most of the farms in this association are at least. 200 acres in size. The soils in tIie. northern part of the asso- ciation are mainly idle or in forest,. In those areas the chief farming enterprises are, the ni sing of beef cattle and proyidirmg pasture for the cattle. of the acreage in the southern part is in pastureor in cultivated crops, mainly tobacco, coria, and soybeans. The soils of this association are well suited to tobacco, corn, cotton, soybeans, lespedeza, small grains, and pas- ture. They are easily tilled, and crops grown on theism respond swell if suitable applications of lime rind fert.i... liter are made. Erosion is a hazard. Ther Cecil and Appling soils have moderate limitations if used as absorption fields for septic taa.rdis. They have no special limitations- if ttsed for road construction or as support for foundation footings of larg=e lmildings. 117'ells adequate for industrial use can be located ss°ithin this association. Yields of 10 to M gallons of water per minute are conanion from private wells. The quantity of surface, water is good, and the. supply is faiArty consta-nt, except durilag periods of extreme, drought. Gently sloping to 3tc(,,pr, deep, well-dr°a-incd .eoib, tlutt hawc a subsoal of f°rnz rod clay; dert'r.+<W 7nostly from gnc,ss and schist This association consists of gently sloping soils on ridges and of sloping; to steep soils ova the sides of ridges. It is in the uplands, mainly in the central and north - central parts of the counter. The areas are dissected by WAKE COUNTY, NORTH CAROLINA many streams that form a dendritic drainage pattern. This association occupies about 18 percent of the county. Deep, well -drained Cecil soils, which formed in material that weathered from gneiss and schist, occupy about 65 percent of the association. They have a surface layer of sandy loam or gravelly sandy loam to clay loam and a subsoil of firm, red clay. Soils that make up the rest of the association are mainly the Appling, Madison, Wedowee, Enon, Wilkes, Chewacla, Congaree, Wehadkee, and Bibb. Except for the steep areas, the soils in most of this association have been cultivated within the past 100 years. Now, about 80 percent of the association is in for- est and the rest is cultivated or in pasture. The farms are generally about 150 acres in size, and most of them are operated by the owner. Growing tobacco and raising cat- tle are the chief farming enterprises. The soils are suited to tobacco, corn, cotton, soybeans, lespedeza, small grains, and pasture. They are easily tilled but are susceptible to erosion. Crops grown on them respond well if suitable applications of lime and fertilizer are made. The Cecil soils of this association have moderate limi- tations if used as absorption fields for septic tanks. They have no special limitations if used for road construction or as support for foundation footings of large buildings. Wells adequate for industrial use can be located within the association. Yields of 10 to 15 gallons of water per minute are common from private wells. The quantity of surface water is good, and the supply is fairly constant, except during periods of extreme drought. 7. Cecil -Madison Association Gently sloping to steep, deep, well -drained soils that have a subsoil of red, friable to firm clay loam to clay; derived -mostly from gneiss and schist This association occupies an area about 2 miles wide on uplands in the northern part of the county. It consists of gently sloping soils on narrow ridges and of sloping to steep soils on the sides of ridges near drainageways and streams. The area is dissected by many streams that form it dendritic drainage pattern. The association occu- pies about 1 percent of the county. Well -drained Cecil and Madison soils make up a major part of the association. They have formed in material that weathered from gneiss and schist. Cecil soils occupy about 40 percent of the association. They are deep soils that have a surface layer of sandy loam, gravelly sandy loam, or clay loam and a subsoil of red, firm clay. Madison soils occupy about 37 percent of the associa- tion. They are deep and have a surface layer of sandy loam and a subsoil of red to dark -red, friable clay loam to clay. Soils that occupy the rest, of the association are mainly those of the Appling, Wilkes, Chewacla, and Congaree series. Herndon, Enon, and Lloyd soils, however, occur in the southeastern part of the association, where a large area contains many outcroppings of soapstone high in content of talc. Many veins of highly basic minerals are mixed within the soapstone. 5 About 75 percent of this association is in forest, and the rest is cultivated or in pasture. The farms are gen- erally less than 150 acres in size. The chief farming oper- ation is the raising of beef cattle. The soils are suited to tobacco, corn, cotton, soybeans, lespedeza, small grains, and pasture. They are suscepti- ble to erosion but are easily tilled. Crops grown on them respond well to applications of lime and fertilizer. The Cecil and Madison soils of this association have moderate limitations if used as absorption fields for sep- tic tanks. They have no special limitations if used for road construction or as support for foundation footings of large buildings. Wells adequate for industrial use can be located within the association. Yields of 10 to 15 gallons of water per minute are common from private wells. The quantity of surface water is good, and the supply is fairly constant, except during periods of extreme drought. 8. Appling Association Gently sloping to moderately steep, deep, well -drained soils that have a subsoil of firm clay loam to clay; der- ived mostly from granite, gneiss, and schist This association occupies three large areas of irregular shape in the eastern, central, and western parts of the county. It consists of gently sloping soils on ridges and of sloping to steep soils on the sides of ridges. The areas are in the uplands and are dissected by many streams that form a dendritic drainage pattern. This association occupies about 23 percent of the county. Well -drained, deep Appling soils make up about 70 percent of the association. They have formed mainly in material that weathered from granite and gneiss but partly in material derived from schist. These soils have a surface layer of sandy loam, gravelly sandy loam, or fine sandy loam and a subsoil of firm clay loam to clay. Soils that occupy the rest of the association are mainly those of the Durham, Wedowee, Vance, Louisburg, Col- fax, Worsham, Mantachie, Congaree, Chewacla, Wehad- kee, and Bibb series. Except for wet areas, the soils in nearly all of this association have been cultivated in the past 100 years. Now, about 85 percent of the association is cultivated or in pasture and the rest is in forest. The farms are gen- erally 100 to 200 acres in size and are mostly operated by the owner. The growing of tobacco, cotton, corn, and soybeans is the chief farming enterprise. The soils of this association are suited to corn, cotton, soybeans, lespedeza, small grains, and pasture, and they are especially well suited to tobacco. They are easily tilled, but they are susceptible to erosion. Crops grown on them respond well if suitable applications of lime and fertilizer are made. The Appling soils of this association have moderate limitations to use as absorption fields for septic tanks. They have no special limitations if used for road con- struction or as support for foundation footings of large buildings. Wells adequate for industrial use can be located within the association. Yields of 10 to 15 gallons of water per minute are common from private wells. The quantity of T SOM SURVEY surface+ water is good, and the supply is fairly constant, except during periods of extreme drought. Xearhy lov(,7 to sloping, very deep, somcivhat exr,��ssar.�rlr� drained and wdl, drained soils that have a subsoil of fri- able sandy loam to sandy clay loam., form,(;d fag Coastal Plain sediments This association is ori uplands in the southern part, of the county. ft, consists of nearly level or gently sloping soils on ridges, and of sloping soils on the, sides of ridges. `l,'he area, Is dissected by many streams that form a. den- dritic drainage pa.t.teni. This association occupies about 9 percent of the county. Wagrain and Norfolk soils, which make up a major part of the association, have formed in Coastal Plain sediments. These soils are eery deep. Wagram soils, which are somewhat excessively drained, make up about 30 percent of the associ0ion. They ha.�re a surface layer of loamy sand about 20 to 40 inches thick. Their subsoil is friable sandy loam to sandy clay loam. Well -drained Norfolk soils make up about 25 percent of the association. They have a surface laver of loamy sand and a subsoil of friable sandy loam to sandy clay loam, The rest of the association consists mainly of soils of the Faceville, Orangeburg, Troup, Goldsboro, Lynch- burg, Rains, Plummer, Appling, and Herndon series. About 85 percent of this association is cultivated, and the rest is in forest. The farms are generally snore than 200 acres in size and are operated by the owner. The growing of tobacco, cotton, corn, and. soybeans is the chief farming enterprise. The soils of this association are suited to tobacco, corn, cotton, soybeans, small grains, and pasture. They are eal.sily tilled but are susceptible to erosion. Crops grown on them respond ar-ell. if suitable applications of lime and., fertilizer are made. The lVagra.m and l0.'orfolk soils of this association, have. only slight limitations to use as absorption fields for sep tic tanks. T'bey have no special lilrlitations if used for road construction or as support for foundation footings of large buildings. Wells adequate :For industrial use can be located within the association. Yields of 10 to 15 gallons of water per minute are common froin private, swells. The. quantity of surface water is good, and the supply is fairly constant, except during periods of extreme drought. U�:mtly sloping to stc;ep, deep and 2 odcrafelp deep, �racll dralncd and somcer hat cxccssiwcly draiv.cc l soz.7s that have. a subsoil of fria.Vr, coarse sand.71 loan?. to Aria clay; derhoed, °mostly frog, gra�nito, gneiss, and 8ehist This association consists of gently sloping soils on. broad ridges in the uplands, and of sloping to steep soils on the sides of ridges near draina.geways and streams. The area is dissected by many streams that form a den- dritic drainage pattern. It is in the eastern part of the county and extends from the Franklin County line to a point near the Johnston County line. The association occupies about 10 percent of the county. The major soils of this association have formed in. material. that ii ea hexed fromgran'bte, and gneiss. Deep, Well -drained Appling soils make up about 20 percent of the association. They have a surface layer of sandy loam, fine sandy loam, or gravelly sandy login and a. subsoil of clay loam to clay. Moderately deep, somewhat excessively drained Lou- isburg soils snake up about 20 percent.. They have, al: sur- face layer of loamy sand that is underlain by very :fria. ole. sandy loam. Deep, well -drained Wedowee soils naahe up about IS percent of the association. They have % surface Iayer of sandy loaan and a subsoil of firm sandy clay loam to cla-y Loam. The rest of ,the association consists rrrainly of 11'.-1ke, -Durham, Nance, Colfax, 'iVorsham, C7hewacla, Wehad- kee, and Bibb soils. About half of this association is cultivated, and the, rest is in forest. The farms are generally about 200 acres or less in size.. The chief crops are t-obacco, cotton, soy. - beans,, and corn. The soils of this association are suited to tobacco, corn, cotton, soybeans, lespedeza., small grains, and pasture, but they are droughty in many places. The soils are easily tilled but are susceptible to erosion. Crops grown on them respond well if suitable applications of lime and ferti- lizer are made. The major soils of this association have moderate to severe limitations to use is absorption fields for septic tanks. They have no special limitations if they are used. to support foundation footings for large buildings. Bed- rock near the surface is the main Iirnitat.ion to use for road construction. Wells adequate for industrial use can be locarted within this association. Yields of 10 to 15 gallons of water per minute are, common from private swells. The quantity of surface wat.er is good, and alae, supply is fairly constant, except- during periods of extreme drought. This section describes the: soil series and mapping units of Wake County. The approximate. acreage and �arc7- portionate extent of each mapping unit are given in. table 1. Their location iii the county is shovm on the soil gnarl at, the back: of this soil survey. The procedure is first to describe the soil series, and then the mapping units in that series. 'Thus, to get full information oil any snapping rinit, It Is ri"assar'- to read the description of that unit, and also the. description of the soil series to which it, belongs. - s mentioned in the, section "How This Surrey Was Made," not all wrapping units are members of a soil series. Csui l ied land and :lade land„ for example, are miscellaneous land types that do not lselong• to a soil series. They, are listed, nevertheless, in alphabetic order along with the. soil series. The colors shown are. those of a moist soil. In comparing a mapping unit. with a soil series, many will prefer to read the short description of the profile in WAKE COUNTY, NORTH CAROLINA TABLE L.—Approximate acreage and propor°t7onate. extent of tda,e, series Soil Altavista fine sandy loam, 0 to 4 percent slopes__-. A,ppliarg gravelly sandy loam, 2 to 6 percent slopes.. Appling gravelly sandy loam, 2 to 6 percent slopes, Appling gravelly sandy loam, 6 to 10 percent Slopes- _ _.-_ - Appling gravelly sandy loam, 6 to 10 percent slopes, llppling sandy loam, 2 to 6 percent slopes.- Appling sandy loans, 2 to 6 percent slopes, eroded_ Appling sandy loam, 6 to 10 percent slopes Appling sandy loam, 6 to 1.0 percent slopes, eroded_.___.____-. _--____._ _,_-W_-_-.__.____---_ Appling sandy loam, 10 to 15 percent slopes_ Appling fine sandy loam, 2 to 6 percent slopes__-_ Appling fine sandy loam, 2 to 6 percent slopes, eroded _ Appling fine sandy loam, 6 to 10 percent slopes _ tippling fine sandy loam, 6 to 10 percent slopes, 1 eroded--- - Augusta fine sandy loam_ Buncombe Soils ecil ',Indy loam, 2 to 6 percent slopes_ _ vecil sandy loam, 2 to 6 per°eent slopes, eroded Cecil `;a.ndI- loam, 6 to 10 percent coil sandy loam, 6 to 10 percent slopes, eroded _ ,ecil sandy loam, 10 to 15 percent coil sandy login, 15 to 45 percent slopes _-_._-____, lecil gravelly sandy loam, 2 to 6 percent slopes___' ;%evil gnwelly sandy loam, 2 to 6 percent slopes, eroded_.___ .. Cecil gr Zvelly sandy loam, 6 to 10 percent slopes__ .:,aril gravelly sandy loam, 6 to 10 percent slopes, j eroded_ Cecil clay loam, 2 to 6 percent slopes, severely eroded __,-----___-_-_- _ _ _ _ -i Cecil clay loam, 6 to 10 percent slopes, severely eroded ,evil clay toaann, 10 to 20 percent slopes, severely eroded -- -_ -------------_---- ..hc aclaa, soils _--- _ _ _ .. _-- "olfax. nndyluam_._.___..__. .ongaree fine windy loam "ongaree silt lo,ann_._,_.__----__ Creedmoor saa:udy loam, 2 to 6 percent slopes__ %reedmoor sandy loam, 2 to 6 percent slopes, �I eroded lrevdmoor �,audy loam 6 to 10 percent Elopes_ . _...� _,reedmoor sandy loam, 6 to 10 percent slopes, eroded-____.-----_____._.__. ,�`reedmoor sandy loam, 10 to 20 percent slopes _w reedmoor silt loam, 2 to 6 perceut slopes___ _ J �a eedrnoor silt, loam, 6 to 10 percent slopes., Durh:a:rn loamy sand, 2 to 6 percent slopes__ Durham loatimy sand, 2 to 6 percent slopes, eroded, Durham lonmy sand, 6 to 10 percent slopes_ _. _ _.- _ _ i7nrhmm loamy sand, 6 to 10 percent slopes, Enon lane sandy loam, 2 to 6 percent slopes- Enon fine sandy loam, 2 to 6 percent slopes, eroded _ Enon finessnudy loam, 6 to 10 percent slope.. _. __J _ Enon fine sandy loran, 6 to 10 percent slopes, eroded._.,... - -- -------- -- -- ....._i Enon fine sarndy loam, 10 to 15 percent slopes, Faceville sandy loam, 2 to 6 percent slopes ------ Faceville _Faceville san dy loam, 2 to 6 percent slopes, eroded_': Faceville sandy loans, 6 to 10 percent slopes I, Laeorgevdle silt loam, 2 to 6 percent slopes_ ,eorgeville silt loam, 2 to 6 percent slopes, eroded_ See footnote at enol of table. 335-s03.-_70 ___2 Acres 4,093 3, 21.0 7, 130 4,617 8, 136 16, 682 40,724 8,470 26, 136 10,520 1,261 2, 389: 1, 216 1, 594: 3, 876 537 1, 366 19,363 2, 043 18, 173 15, 291 11,214 1,446 12, 637 3, 006 16,243 1,902 2,485 I 1,286 15,950 7, 79'7 2, 057 k 2,294. 2, 026 11, 068 3,097 14., 216 6, 081 1 231 1, 275 f 12, 699 851 2, 095 71U 260 987 I 472 1, 221 422 793 935 186 439 1,720 Soil 0.7 li Cleorgeviilesiltloam, 6to10percent slope-__..-_._. 6 !1 Georgeville silt loam, 6 to 10 percent slopes, eroded -------....----._..._...____.__...... 1, 3 �( Georgeville silt loam, 10 to 15 percent slopes, eroded ------- -- -------- . 8 Goldsboro sandy loam- _.__..__ _ . __._.________. Gram rllc sandy loam, 2 to 6 percent slopes_., _ _ 1. 5 Granville, sandy loam, 2 to 6 percent slopes, eroded 3. 0 E Granville sandy loam, 6 to 10 percent, slopes_ 7, -I: '[ Granville sandy loam, 6 to 10 percent slopes, 1.6 eroded__-.._______..__..._.._......____...._...,_.,.._....___ Granville sandy loam, 10 to 15 percent slopes_ 4. 7 I .._ Gu land- __ 1.9 ; Helena sandy loam, 2 to 6 percent slopes_ ____-_ , 2 Helena sandy loam, 2 to 6 percent slopes, eroded.- H - elena sandy loam, 6 to 10 percent slopes___.__ .4 Helena sandy loam, 6 to 10 percent slopes, eroded - 2 li Helena sandy loam, 10 to 15 percent slopes.------ Herndon silt loam, 2 to 6 percent slopes- _--_ _ 3 �..- - j Herndon silt loam, 2 to 6 percent slopes, eroded_. '... 7 Herndon silt loam, 6 to 10 percent slopes.___ _.._._ ._ 1 �I Herndon silt, loam, 6 to 10 percent slopes, eroded. 2 Herndon silt loam, 10 to 15 percent slopes, eroded_ 3. 5 Herndon silt loam, 15 to 25 percent Slopes_______ 4 ! Lloyd loam, 2 to 6 percent slopes, eroded___ 3. 3 Lloyd loam, 6 to 10 percent slopes, eroded-_..._.. 2. 8 '� Lloyd loam, 10 to 15 percent slopes, eroded...____. - 2. 0 Louisburg loamy sand, 2 to 6 percent 3 Louisburg loamy sand, 6 to 10 percent slopes_ _ _.... .Louisburg loamy sand, 10 to 15 percent slopes. --- 2. 3 lopes._-_2.3 Louisburg -Wedowee complex, 2 to 6 percent 5 Slopes- ,_-__-_-.- - - _­ ------ Lou isburg-Wedowee ___..Louisburg-Wedowee complex, 2 to 6 percent 3. 0 slopes,--------.-__-_.- �� Louisburg -Wedowee complex, 6 to 10 percent 3----- I Louisburg -Wedowee complex, 6 to 10 percent .4 J slopes -- Lynchburg .2 Made land-------------------__.---_____--__..__ 2. 9 'I -Madison sandy* loam, 2 to 6 percent slopes, eroded - L4 i: Madison sandy loarn, 6 to 10 percent slopes, .4 eroded---- ---- - -. --- - 4 1i ;Madison sandy loam, 10 to 15 percent slopes, 4 Madison sandy loans, 15 to 25 percFnt slopes, 2. 0 f eroded. 6 Mantachie soils Alzbyodan imrndy loam 2 to 6 percent slopes__..___ 2. 6 Mayodan sandy loam, 2 to 6 percent slopes, 1. 1 eroded --------- .2 _ .2 ' Alayodan sandy loam, 6 to 10 percent slopes-___ 2 (' Alavod.au 9a .udy loam, 6 to 10 percent slopes, 2. 3 ',! eroded.___......_ 1 II Mayodan sandy loam, 10 to 15 percent slopes, 4 E eroded__ _.._.. _____--.._____ -__; -Alayodan sandy loam, la to 25 percent slopes -__._I 1. Ni=zvodan gravelly sandy loam, 2 to 6 percent al siopes_-_-.____ .,_--- Dlayodn.n gravelly sandy loam, 2 to 6 percent slopes, eroded llla.yodtan gravelly sandy loam, 6 to 10 percent 2 'I blaayocian gravelly sandy loam, 6 to 10 percent li slopes eroded 1 tilayodan silt loam, thin, 2 to 6 percent slopes 1 Alayodaan, silt loam, thin, 2 to 6 percent slopes, 2 eroded- llayodaan silt loam, thin, 6 to 1.0 percent slop s _._ �r) Mayodan silt loam, thin, 6 to 10 percent slopes, 1 3 eroded--- , playodaarn silt loans, thin, 10 to 15 percent slopes..) I Acres 1Per- cent 614 0, 1 E 1p 55r2 � , 3 921 2 457 1 1, 317 2 300 1 898 2 401 1. 274 1 1,447 - 3 217 (�) 330 1 232 (r) 573 1. 247 (P) 436 i 1 1, 079 2 854 0 1,803 3 1, 098 2 901 2 756 1 794 1. 298E 1 3, 104 6 7190 1. 4 0, 411 1. 2 1,524 3 377 1 2, 597 I 5 986 2 763 j 1 3,779 7 442 1 1 154 `> 951 2 1, 352 °2 6, 260 1. 1 580 I. 950 I 2 928 i 2 2,286 4 2,497 5 716 1 543 1 1,335 2 579 1 1, 1.75 i` 2 987 2 1, 121 2 1, 164 2 1,852 j 3 8 SOIL SURVEY TAnr,E L. Approximafe. acmage and proportionate extent, of die soih--Conrinued Soil ` Acres j Per- cent f Norfolk loamy sand, 0 to 2 percent slopes... _ . _....... 1, 246 1 0. 2 Norfolk loamy sand, 2 to 6 percent slopes_ _ 8, 103 1. 5 Norfolk loamy sand, 2 to 6 percent slopes, eroded - 2, 319 4 ,Norfolk loamy sand, 6 to 10 percent slopes ------I I, 137 2 Norfolk loamy sand, 6 to 10 percent slopes, eroded_! 987 2 Orangeburg loamy stand, 2 to 6 percent slopes___._) 696 1 Orangeburg loamy sand, 2 to 6 percent slopes, I 777 1. Orangeburg loamy sand, 6 to 10 percent slopes, ! 1 506 ( 1 Pinkston sandy loam, 0 to 10 percent slopes-_ --i 533 t Pinkston sandv loam. 10 to 45 pereent slopes.-__-, 2, 730 5 Plummer sand____._ -------.-------------------__'i 634 1 Rains fine sandy loam_ .._.-----.------.-.---._..._.,__! 1, 328 2 Itoauoke fico sandy loom-- ___ __ __� 1, 475 j 3 sv"amp-' - - — - - _ 177 ;l) Vaaace sandy loam, 2 to 6 percent slopes_ 609 1 Vance sandy loam, 2 to 6 percent slopes, eroded__ 2,0 7 1 4 Vance sandy loam, 6 to 10 percent slopes, eroded_, 1, 179 2 Wagr,im loamy sand, 0 to 2 percent slopes- -- Wagram loamy sand, 2 to 6 percent slopes..._ .__ 1, 445 10, 086 3 1. b Wagram loamy sand, 6 to 10 percent slopes_____- 4, 894 9 Waagram-Troup sands, 0 to 4 percent slopes _..._j 4,434 8 Wahee fine sandy loam_ _ _. _ . _ _ - _ 892 2 Wake soils, 2 to 10 percent slopes,_ _ .. _. _ _ _ .._ _ _ . I 906 j 2 Wako soils, 10 to 25 percent slopes ------------- 7, 226 1. 3 Wedowee sandy loam, 2 to 6 percent slopes____.._; 1, 449 '', 3 I Less than 0.05 percent, paragraph form under the description of tile, mapping unit. It differs, from the technical description in that it is less detailed and does not identify layers by A, R, C, and 11 horizons incl depth ranges. The technical profile descriptions are mainly for soil scientists and others who want detailed informa#•ion about soils (15).2 Ibilosv-ing the, naive of eacli mapping unit, there is a symbol in parentheses. This symbol ideaiti4 es the, map ping unit, on the detailed soil inasp. Fisted at the end of each description of a. mapping unit is the capability unit, woodland suitability group, and wildlife suitability group in Which the snapping unit. has been placecl. The page oil which each capability await is described cam be fomid by referring to the "('aide to flapping Units," at the back: of this survey. Afany tering used in the soil de- scriptions and in other parts of the survey are deflied in the Glossary. Altavista Series The Altavista series consists of nearly Iee'el and lit] sloping, deep, nloderately well drained soils ora low stream terraces. The, areas are, fairly hirge and are near the major streams in the county. The sods have formed in alluvial. deposits Slider forest, vegetation. A semonal high water table is at a depth of approximately 2 feet. Natural fertility and tlle, coritent of Organic, in"atter are revs. f'elaneability is inoderate, the available water capa- city is medium, aaud tlleshrink-sivell potential is moder- ate. Infrequent flooding occurs, but the floodwaters re - "Italic numbers in parentheses refer to Literature Cited, 1)..11.7 Soil Wedowe(,,, sandy loam, 2 to 6 percent slopes, eroded _ _ _ Wedowee sandy loam, 6 to 10 percent elope ____� Wedowee sandy loam, 6 to 10 percent slopes, ---- Wedowee sandy loam, 10 to 15 percent slopes, Wedowee sandy loam 15 to `25 pei cent slopes-__ -. J, 1�'ehadkee and Bibb soils__ _. _ __ _ White Store sandy loam, 2 to 6 percent slops__. White Store sandy loans, 2 to 6 percent slopes � White. Store sandy loam, 6 to 10 percent slopes___ White, Store sandy loam, 6 to 10 percent slopes eroded... -- - ---- - -------- --- ........,_ White Store sandy loam, 10 to 20 percent slopes_.. White Store silt loam, 2 to 6 percent slopes_ _ _ _ White Store clay loam, 2 to 15 percent lopes, , severely eroded-_ Wilkes soils, 2 to 10 percent dopes_ Wilkes soils, 10 to 20percent~lopes....________.___; Wilkes soils, 20 to 45 pereent slopes _ - Wilkes stony soils, 15 to 25 percent slopes_ _ Worsh,amsaudy loam- _______ __ _ _ __-- Borrowarea .------------------------------- Total _ --- -__ ---- -- _acres 4, 089 1, 184 3, 981 1, 552 5. 719 7, 4a,1 21, 131 .512 4,950 7113 Per- cent O. 7 .2 7, 21 5 1. 3 5, 559 1. (i 3:51 1 I 464 i 6;39 1 847 1 4,520 8 235 (�} 12, 613 2.3 346 1. Tot.al-----------------------------------552, 960 1 100. 0 main for only short periods. Reaction i,, inedinln acid to strongly acid in areas that, liar,(- not, heeii limed. Response is good if a suitable amount of lime and the proper hinds and amounts of fertilizer are applied.. Their limited extent makes the A-1favista soil's of only minor` iinporta-ace for farming. Most of the acreage is, cultivated or in pasture. Representative profile of Altavista- fine sandy- loam, 0 to 4 percent slopes, in a. cultivated field 1'/„ utiles southwest of Plymouth Church and 2100 yards east of farm road Ap-0 to 10 inches, light browliish-gray (10YR li/2) fine sandy loam ; weale, medium, gramilar structure: very friable when moist,; many fine, -woody a'id fibrous roots; niediuin acid; abrupt, navy bomidary. A2-10 to I" inches, Dale-browu (10YR (3/3) fine sandy loam; weak, fine, granuhir structure; very, friallole -when moist; few, Sine, woody roots; inediurn acid; abrupt, sin.00th boundary. B1-13 to 15 inehes, brownish -yellow (10YU 6"(1) and liale- brown (10YR 6/3) tine sandy claa.y- loam: -weak, 'hie. subangular blocky structure; friable when moist fewv medium, woody roots; medluna acid; abrupt, wavy boundary. B21t--.1, 5 to 19 inches, yellowish -brown (10YR :6/6) clay loam; moderate, mecllum, subangtilar bloc•1 y strue- ture ; friable when moist; discontinuons clay film,,; medium acid ; clear, :r-inooth boialidary. 1122t_-.10 to 29 inches, yelloivisb-brown (10YR 5/8) clay loan; common, fine, distinct, yellovrish-red mottles; anoclerate, mecllum, subangular blocky strnc°tnre; fri- able to firm when moist; di,svoifflnuons clay films on ped snrtaeew ; inedium acid; clear, smooth boundary. ia23t-29 to 36 inehe.:, yello--ish-brown (10YR 5/81 clay loran; common, fine, distinct, light brmvnish-gray mottles: weak, fine, subangular blocky structure; fri- able -when moist; few aliscontill uoil's clay films" strong y acid; gradual, sanooth boundaary. WAKE" COUNTY, NORTH CAROLINA 112--36 to 42 inches, br€pwnish-yellow (10YR 0/6) sandy clay loam; inany, .medium, distinct, light brownish -gray mottles; weak, fine, subangular blocky structure; fri- able when moist; few, thin, discontinuous dray films; strongly acid; gradual, smooth boundary. C-42 to 48 inches +, yellowish -brown (10YR 5/8) coarse sandy loans; rn.my, medium, distinct, strong -brown and ligbt grayish -brown mottles; massive; friable when moist; 8trongly acid, The A horizons range from 3 to 15 inches in total thickness and from light brownish gray or pale brown to light grayish brown or dark grayish brown in color. The B horizons range from 12 to 29 inches in combined thickness and from sandy clay loam to clay loans in texture. Their color ranges from yellowish brown or brownish yellow to reddish yellow in 10YR or 7.5YR ]ares. Grayish mottles are 10 to 20 inches below- the top of the B21t horizons. The combined thickness of the surface layer anis subsoil ranges from 24 inches to less than 60 inches. Depth to hard rock is more than 5 feet, and commonly is more than 15 feet. Altavista soils occur with Appling, Goldsboro, Colfax, and 1-ugw,ta snails. They are less well drained than the Appling soils, have a. thinner ;solum than the Goldsboro solls, and are better drained than the Colfax and Augusta sails. Altavista fine sandy Imam, 0 to 4 percent slopes (AfA).-- This 17 the only Altavista soil mapped in. Wake Comity. It is oil low stre.ain terraces. The surface layer is light bro dish -gray and light, grayish -brown to dark grayish - brown fine sandy loaln 3 to 15 iuc-hes thick. The subsoil is yellowish -brown to reddish-yellow, friable sandy clay loans to clay loans mottled with gray in most places. It is 12 to 29 inches thick. Infiltration is Food, and surface runoff' is slow to Inedi- uni. This soil is easy to keep in good t-ilth and can be worked throughout, a wide range of moisture content. This soil is well spited to most of the locally grown crops. It is used ma.iuly for row crops or pasture-, but as small acreage. is in trees. In places some improvement in drainage, is needed if tobacco and specialty crops are grown. (Capability unit IIw-1, woodland, suitability group 4, wildlife, suitability group 1} Gently sloping to strongly sloping, deep, well -drained soils of the Piedmont uplands slake up the Appling ser- ies. These soils are on side, slopes and on rounded divides that have. a difference, lit elegy -at -ion of about 50 feet be- tween the highest and the .low -est poilats. They snare formed ander forest in nwterial that weathered from zranite, ;neiss, schist, and otlwr aeiclle rocks. Marge areas are in the eastern pact of tile- errantyand smaller arenas are in ether parts. Na-turai fertility and the content of organic inatter are ioati. The available water capacity isne,dilma, and persue ability and the shrink-stivall potential are moderate. Ex- cept in areas that have received line, these soils are strongly acid. Response is good if suitable applications of lime, and fertilizer are made. 1ppling soils are suited to all the, locally grown crops. 3Yuch of the acreage is eulti�,ated. Representative profile of an Appling sandy loans ;,it a _ult-it,aAted field 1 mile north of Bethany Church on a )awed road, one-eightli of a anile easton a prixaa,te, road, and 20 yards south of private road. 11 Al) --O to R inches, grayksh-brown (10YR 5/2) sandy loam; weals, coarse, granular structure; very friable when moist; rmany, fine, fibrous roots; medium acid; clear, smooth boundary. A2-8 to 11 iucbes, light yellowish -brown (10YR 6!4) sandy loam; weak, coarse, granular structure, very friable when moist; colnnaora, fine, fibrous roots; nxelium acid; clear, smooth boundary. 111-11 to 14 inches, strong -brown (7.5YR 5/6) sandy clay loam ; weak, medium, subangular blocky structure; friable when moist, sticky and slightly plastic when wet; few fine mica flakes; few quartz pebbles; strongly acid; abrupt, smooth boundary. B21t-14 to 20 i irlies, strong -brown l7. YR 5/6) clay loam: few, fine, distinct, yellow mottles; moderate, Line and naedinnr, subangular blocky structure: firm when moist, sticky a..nd plastic when wet; ferr� thins ela.y fihns ; strongly acid; clear, smooth bouYzdary. B22t-20 to °255 inebeti, strong -brown (7.5YR 5/6) clay loam; few, fine, distinct, brownish -yellow axnl commor9, tine, prominent, red mottles; moderate, fine and medium, subangular blocky structure; .firm when moist, sticky and plastic tmhen wet; thin clay films on pard surfaces; few fine mica flakes; strongly acid; clear, smooth boundary. 11213t-25 to 37 inches, reddish-yellow, (7.5YR 6/6) clay loam; few, fine, distinct, red mottles; moderate, fine and medium, subangular bloelcy structure; friable when moist, sticky and plastic when wet; thin clay films on ped surfaces; few fine mica flakes; strongly acid; clear, smooth boundary_ 1;24t. 37 to 39 inches, yellowish brown (blit 5/6) clay loam; common medium, prominent, red mottles; w a aak and moderate, fine, subangular blocky struc- ture tending to cursive; friable when moist, sticky incl plastic when wet; few clay fshus in vertical cracks; sowne saprolite; common to many erica flake.s; strongly avid; clear, smooth boundary. lits—:ill to 44 hashes, red (2.5YR 5-1/8) loam: eomamon, fine, distinct, brownish -yellow mottles: weak, medium, subangular blocky striu,tune tending to rnas-skve: fri- able when moist, slightly stkcky :and slightly plastic when wet; fere clay films in vertical cracks; many mica flakes; strongly acid; clear, smooth boundary. 0--44 to 50 inches -1-, mottled red and brownish -yellow sandy clay loam saprolite containing many mica flakes; strongly acid. The A horizons range frorn dart: gray or dark grayish brown to light grayish brown or light yellowish brown in color and frorn 3 to 30 inches in total thickness. In general, their texture ranges from sandy loam or fine sandy loam to gravelly sandy loam that cont tins cobblestones in }slaccs. Ira more eroded areas, however, the texture ranges to sandy clay. The, 13 horizons range from loam to cbiy in texture and from `?4 to 40 inches ill total thickness. The M. horizon is conauscnly yellowish brown instead of strong brown. The B2 horizons .are generally mottled with red, and their color r<ange,s from yellowish brown or strong brown to yellowish red or reddish yellow in lines, of 10YR to 5YR. The color of the B3 'horizon ranges from red to yellowish reed, and that horizon is streaked with gray io places. The combined thickness of the surface laver and subsoil raurges frown iii to 60 inches, Depth to bard rock ranges from 5 to more than 15 feet. Appling soils occur with Herndon, Durham, Cecil, Vance, nce, and Atayodan soils. They contain more sand and less silt than the llerndon soils and contain more clay and are more reddish than the Durlianr soils. Appling soils are less red ttnd less clayey than the Cecil soils, are less firm than the Vance soils, and contain less exchangeable aluminum titan the Afayodan soils. Appling gravelly sandy loam, 2 to 6 percent slopes (AgB).--This soil is on broad, smooth intarstrea,ln divides ill the uplands. It has a surface layer of light gnivish- brown to dark -gray gravelly sanely loam that is 0 to 20 inches thick. The subsoil is yellowish -brown to yello xish- UM SOIL SURVEY red, firm clay loam to clay that is mottled with red_ in most places and is 24 to 40 inches thick. From 15 to 30 percent of the surface layer is gravel. In many places cobbles are on and in the surface layer. Included in mapping -were a few areas where the sfope is less than 2 percent. Infiltration is good, and surface runoff is anedi.um. The hazard of erosion is moderate. This soil can be worked throughout a wide range of moisture content, but where the content of gravel and cobblestones is high, tillage is difficult. ,about half of the acreage is in cultivated crops or pas- ture, and the rest; is in forest or in other uses. The cul- tivated arenas are used chiefly for row crops, but this soil is well suited to all the locally grown crops. Practices that effectively control runoff and erosion. are needed in the cultivated areas. (Capability unit IIe-1, woodland suitability group 5, wildlife suitability group 1) Appling gravelly sande loam, 2 to 6 percent slopes, eroded (Ag32)._This soil is on broad, smooth interstream divides in the uplands. The surface layer is 3 to 7 inches thick, nand. in many places it, is a mixture of the remaining original surface soil and of material from the subsoil. In the, less eroded areas, the surface layer is light, grayish -brown gravelly sandy loam, but in the more eroded spots the color ranges to yellowish brown and the texture ranges to gravelly sandy clay. The sub- soil is 24 to 40 inches thick and is yellowQi-brolvrr to yellowish -red, firm clay loaan to clary that is mottled with real in many places. Included with this soil in crapping were some, se- verely eroded spots where the subsoil is exposed. These areas make up from 5 to 25 percent of the acreage in the snapping unit. Infiltration is fair, and surface runoff is medium. The hazard of further erosion is moderate. This soil is diffi- cult to keep in good tiltli, but it can be, worked through- out a fairly wide range of moisture content. A crust forms on the severely eroded spots after hard rains, and clods form there, if those areas are -worked when wet. The crust and the clods interfere with gernaiva.tion. As a result, stands of crops are poor and replanting of those areas rmy be necessary. An even stand of tobacco is 'hard to obtain. Plants in an uneven stand mature at different. gimes. This increases the difficulty of harvesting and cur- ing the crop, said it reduces the quality of, the tobacco. ..bout half of the storage is cultivated or in pasture, and the rest is in forest or in other uses. The cultivated areas ire used chiefly for row crops, but this soil is well suited to all the locally grown crops. Practices Haat, effec- tively control rauaofi' and erosion are. needed in the cul- tivated areas. Capability unit Ile -J, woodland suitabil- ity group 5, wildlife suitability group 1) Appling gravelly sandy loam, 6 to 1.0 percent slopes (AgC).---This soil is on narrow side slopes in the uplands. Its surface layer is light grayish-browrr.r,o dark gray gravelly sandy loam 6 to 15 inches thick. The content of gravel in the surface layer ranges from 15 to 30 percent. The subsoil is 24 to 36 inches thick and is yellowish - brown to yellowish -red, firm clay loam to clay mottled with red in many places. In many aroas cobblestones are, on the surface and in the surfa,c-3layer. :infiltration is good, naad. surface runoff is rapid. The. hazard of erosion is severe. This soil. can be worked. throughout a wide range of moisture content. It is diffi- cult to till, however, in areas where the content of 9mvel. a,nd cobblestones is high. About one-fourth of the acreage is in cultivated crops or pasture, and. the. rest is in forest or in other uses. Where this soil has been cleared, it is used chieflyy for rotiv crops, but is is well suited to all the locally grown crops. Intensive practices that effectively corrtr° l runoff and erosion are needed in the cultivated. areas. (Capabil- ity unit IIIe-=1, woodland suitability group 5,, -wildlife suitability group 1) Appling gravelly sandy loam, 6 to 10 percent slopes, eroded (AgC2). —This soil is on narrow side slopes in the uplands. In many places its surface layer is a mixture of the remaining original surface soil and of material from the subsoil. The surface layer is 3 to 7 inches thick and ranges from light grayish -brown gravelly sand* loam in the less eroded spots to yellowish -brown gravel... ly sandy clay in the more eroded areas. The subsoil is 24 to 36 inches thick a'nd is yellowish -brown to yellowish - red, firm clay loam to clay that is mottled with red in most places. In massy places cobbles are in the surface layer and on the surface. Included in clapping were some severely eroded spots -where, the subsoil is exposed. These areas make up from 5 to 25 percent of the € creage. in the snapping unit. Infiltration is fair, and surface, raanoff is rapid. The hazard of further erosion is severe:. The large number of pebbles and cobblestones, and the thin surface, layer, make this soil difficult to keep in good tilth, but. the soil can be worked throughout, a fairly wide ra.nge of moisture con. - tent. A crust forms on the severely eroded spots after hard rains, and clods form if those. areas are worked when wet. The crust and the clods interfere with germin- stencil of crops are poor and. replanting ation. Asa result, is sometimes necessary. An even stand of tobacco is hard. to obtain. Plants in an uneven, stand mature, at different times. This increases the difficulty of harvesting and curing the crop, and it reduces the quality of thy® tobacco. About orae. -fourth of the acreage is cultivated, and the rest is in forest. This soil is well suited to all the locally grown. crops, and the areas that are. cleared are used chiefly for row crops. Intensive practices that effectively control runoff and erosion are needed in the culffi,gted areas. (Capability unit IIIe--1, woodland stait2Lbility group 5, wildlife suitability group 1) Appling sandy loam, 2 to 6 percent slopes (Ap31.-- This soil is on broad, smooth interstreanz divides in the uplands. Its surface layer is light grayish. --brown to dark - gray sand' v loam 8 to 20 inches thick (fig. 2) . The subsoil is 24 to 40 inches thick and is yellowish -brown to yellowish -red, firm clay loam. to clay that is mottled with red in rnaany places. Included in snapping were a, few areas in which the slope is less than 2 percent. Infiltration is good, and surface. runoff is medium. The hazard of erosion is moderate. This soil is easy to keep in good tilth and can lie worked throughout a wide range of moisture content. WAKE COUNTY, NORTH CAROLINA About two-thirds of the acreage is cultivated or in pas- ture, and the rest is in forest or in other uses. The cul- tivated areas are used chiefly for row crops, especially tobacco and cotton, but this soil is well suited to all the locally grown crops. Practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit He -l., woodland suitability group 5, wildlife, suitability (Capability group 1) Appling sandy loam, 2 to 6 percent slopes, eroded (ApB2).—This soil is on broad, smooth interstream divides in the uplands. The surface layer is 3 to 7 inches thick, and in places it is a mixture of the, remaining original surface soil and of material from the subsoil. In the less eroded areas, the surface layer is light t grali-brown sandy loam, but the, color ranges to yellowishVirown and the texture ranges to sandy clay in the more eroded spots. The subsoil is 24 to 40 inches thick, and it is yellowish - brown to yellowish -red, firm sandy clay loam to clay that is mottled with red in many places. Included with this soil in mapping were some severely eroded spots where the subsoil is exposed. These areas make up from 5 to 25 percent of the acreage in the map- ping unit. Infiltration is fair, and surface runoff is medium. The hazard. of further erosion is moderate. This soil is easy to keep in good tilth and can be worked throughout a wide range of moisture content. A crust forms on the severely eroded spots after hard rains, however, and clods form if those areas are worked when wet. The crust and the clods interfere with germination. As a result, , stands of crops are poor and replanting of the severely eroded spots may be necessary. An even stand of tobac- co is hard to obtain. Plants in an uneven stand mature at different, times. This increases the difficulty of harvest- ing and curing the crop and reduces the quality of the tobacco. About two-thirds of the acreage is in cultivated crops or pasture, and the rest is in forest or in other uses. The cultivated areas are used chiefly for row crops, es- pecially tobacco and cot -ton, but this soil is well suited to all the locally grown crops. In the areas that are cul- tivated, practices that effectively control runoff and ero- sion are needed. (Capability unit He --1, woodland suit- ability group 5, wildlife suitability group 1) Appling sandy loam, 6 to 10 Percent slopes (ApQ.— This soil is on narrow side slopes in the uplands. It has a surface layer of light grayish -brown to dark -gray sandy loa-in 7 to 15 inches thick. The subsoil is yellowish -brown to yellowish -red, firm clay loam to clay that is mottled with red in most places. The subsoil is 24 to 36 inches thick. Infiltration is good, and surface runoff is rapid. The hazard of erosion is severe. This soil is easy .to keep in good tilth and can be worked throughout a wide range of inoisture content. About two-thirds of the acreage is in cultivated crops or pasture, and the rest is in forest or in other uses. The cultivated areas are used chiefly for row crops, especially tobacco and cotton, but this soil is well suited toall the locally grown crops. Intensive practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit IIIe-1, woodland suitability group 5, wildlife suitability group 1) flu Figure 2.—Profile of Appling sandy loam, 2 to 6 percent slopes. Appling sandy loam, 6 to 10 percent slopes, eroded (ApC2).—This soil is on narrow side slopes in the uplands. In many places the present surface layer is a. mixture of the remaining original surface soil and of material from the subsoil. In the less eroded spots, the surface layer is light grayish -brown sandy loam. In the more eroded spots, the color ranges to yellowish brown azid the texture ranges to sandy clay. Thickness of the sur._ face layer ranges from 3 to 7 inches. The subsoil is 24 to 36 inches thick and is yellowish -brown to yellowish -red, firm clay loam to clay that is mottled with red in inost places. Included with this soil in mapping were, some severe- ly eroded spots where the subsoil is exposed. These areas make up from 5 to 25 percent of the total acreage in the mapping unit. Infiltration is fair, and surface runoff is rapid. The hazard of further erosion is severe. This soil is difficult M SOIL SURVEY to keep in good 61th, but, it can be worked throughout, a fairly wide raaage of moisture content. A crust forms on tlme severely= eroded spots after hard rains, however, and clods forma if tboae area,, are, worked when wet. The. crust and the clods interfere with germination. As a result, stands of crops are poor and replanting i.s sometimes necessary. An even stand of tobacco is hard to obtain in °those areas. Plants in an uneven stand mature at different times. ']'his increases the difficulty of harvesting and curing the crop and reduces the quality of the tobacco. .About one-third of the acreage is cultivated or in pasture, and the rest, is in forest or in other uses. The cultivated areas are used chiefly for ro-F', crops, especially tobacco and cotton, but this soil is well suited to all the, locally grown crops. Intensive practices that effeeth,ely control runoff and erosion are needed in the cultivated areas. (Capability unit Me 1, -wmodlaamd suitability group 51 wildlife suitability group 1) Appling sandy loam, 10 to 15 percent slopes (ApD). — This soil is on narrow side slopes bordering drai.na.ge- wa.y s in the uplands. Some slight or moderate erosion has taken place. In the slightly eroded areas, the surface layer is light, grayish -brown to dark -gray sandy loam 7 to 12 inches tbielk. In the moderately eroded aareas,, the surface layer ranges froom light; ,grayish -brown sandy loam,ni to yellowish -brown sandy clay and is 3 to 7 inclines thick. The subsoil is 24 to 30 inches thick and consists of yell oNvish-brown to yellowish -red, firmn clay loani to clay that is mottled with red in most p haves. In niany areas pebbles and cobblestones are on and in the surface layer. Included with this soil in mapping were some areas where the surface layer is fine sandy- loam, and somrme Be- verly eroded spots where the subsoil is exposed. Also in- cluded were a few areas of Durham lowny sand. Infiltration is fair to good, and surface runoff is very rapid. The hazard of further erosion is very severe. Where this soil is only slightly eroded, it is easy to keep in good tilth. Where, is is moderately eroded, it is diffi- cult to keep in good t.ilt,h, but, it can be. worked through- out a, fairly hide range of moisture conte-nt. A crust forms oui time severely eroded spots after hard rains, aid clods form if those areas are worked when ivet. The crust, and the clods interfere with germination. As a. result, stands of crops are poor and replanting of the severely eroded spots may be. necessary. About one-third of the acreage is cultivated or in pas- ture, and the rest is in forest. The cultivated areas ire used chiefly for row crops, but this soil is suited to all the locally grown crops. Intensive practices tlmat effec- tively control runoff and erosion are necessary if cul.ti- va.ted crops are growmm. (Capability unit IVe-1, woodland suitability group 5, wildlife suitability g7oup 1) Appling fine sandy loam, 2 to 6 percent slopes (AFB).— This soil is on broad, smooth interstreaun divides in the uplands. It has a surface layer of light grayish-brojvn to dark -gray fine sandy loans 6 to 12 inches thick. The subsoil is 24 to 40 inches thick and is yellowish -brown toyellowish-red, firun clay loam to clay that is mnott,Ied with red in most places. A- few areas where the slopes are less than 2 percent were included in the mapping. Infiltration is good, and surface runoff' is medium. The hazard of erosion is mnoderate. This soil is easily kept in good t.ilth and can be worked throughout a wide range of moisture content. _boutt two-thirds of the acreage is cultivated or in pas- ture, and, the: rest is in forest. The. cultivated areas are used chiefly for row crops, but this soil is well suited to all the locally grown crops. Where. cultivated crops are grown, practices that, effectively control runoff and erosion are needed. (Capability merit. IIe-1, woodland suitability g -roup 5, wildlife suitability group 1) Appling fine sandy loam, 2 to 6 percent slopes, eroded (AM).—This soil is on 'broad, smooth interstreanm divides in the uplands. In place's its nrfa.ce, layer is °a mixture of the remaining original surface soil anci of material from the subsoil. In the less eroded spots, the surface layer is light grayish -brown fine sandy loam, but in the more eroded spots the color ranges to yellow- ish brown and the, texture ranges to sandy clay. Tlm.ick- ness of the surface lay=er ranges from 3 to 7 inches. The subsoil is 24 to 40 inches thick and is yellowish -brown to yellowish -red, firma clay loam to claa.y that is mottled with red in mmaost. place -s. Included with this soil in =mapping were some se- verely eroded spots where the subsoil is exposed. These areas mnake up from 5 to 25 percent of the total. acreage in the, mapping unit,. Also included were, areas of a soil that has a slightly more browmmish color and prob- ably a higher base saturation than this Appling soil. Infiltration is fair,, and surface runoff is medivam. The hazard of further erosion is moderate. This soil can be, worked throughout a fairly wide range of moisture con- tent. A crust formas on the severely eroded spots after hard rains, however, and clods forum if those areas are worked when wet. The. crust and the, clods interfere w:itlm germination. As a result, stands of crops are poor and replanting of these areas is sometimes necessary. An even stand of tobacco is hard to obtain in these areas. Plants in an uneven stand mature at different times. This increases the difficulty of harm esting and curing the crop, and it reduces tl2e quality of the tobacco. About two-thirds of the acreage is cultivated or ill pas tore, and the, rest is in forest.. The cultivated areas are used chiefly for roev crops, but: this soil is well smuited to 1111 t -lee 2oca111; tnowmm crops. Practices thoit effe.etiveI control runoff and erosion are needed in the cultivated areas. (Capability anit Ile -1, woodland suitability group 5, wildlife suitability group 1) Appling fine sandy loam, 6 to 10 percent slopes (AsC,:—This soil is on narrow side slopes in the uplands. It has a surface layer of light grayish -brown to dark - gray fine sandy loam 6 to 12 inclines thick. The subsoil is 24 to 36 inches thick and is yellotivish-brown to yellow- ish -red, firmn clay loam to clay that is nmottled with red in most places. Incllded in mnapluing Were areas of a, soil that has a, slightly more bro%vnish color and probably a. higher base saturation than this soil. Infiltration is good, and surface runoff is rapid. The hazard of erosion is severe. This soil is easy to beep in good tilth and can be worked throughout a wide range of moisture content. About half of the acreage is cultivated or in pasture, and the rest is in forest. The cultivated areas are used WAKT COUNTY, NCIRT11 CAROLINA chiefly for row crops, but this soil is well suited to all the locally grown crops. Intensive practices that effec- tively coxitrol runoff and erosion are necessary ill the, cultivated areas. (Capability unit Me -1, woodland suit- ability group 5, wildlifesuitability group 1) Appling fine sandy loam, h 6o 10 percent slopes, eroded (A,C2).---This soil is on narrow side slopes in the uplands. In luau), places its surface, layer is a mixture of the relna.ining original surface soil and of material from the subsoil. The surface layer is 3 to I inches thick and ranges from light grayish -brown fine sandy loans, in tile, less eroded areas, to vel'lowish-browza sandy clay, in the wore. eroded spot -s. The subsoil is 24 to 36 uic-lies thick alld is yellowish -brown to yellowish -red' firm clay loan to clay that is mottled with red in many places. Included in mapping were some severely eroded spots where the, subsoil is exposed. These areas make lila from 5 to 25 percent of the acreage in the mapping unit,. Also included were areas of a soil that has a slightly more brownish color and probably a higher base satura- tion than this. soil. Infiltration is fair, and surface, runoff is rapid. The hazard of further erosion is severe. This soil is difficult to keep in good tilth, but it can be, worked throughout r,i, fairly wide range of moisture content. A crust forms oil the severely eroded spots after hard rains, however, and clods form if those areas are worked when wet. The crust and the clods interfere with germination. As a result, stands of crops are poor and replanting of the severely eroded spots is sometillles necessary. An even stand of tobacco is ha -rd to obtain. Plants in ala uneven stand ma- ture at different times. This increases the difficulty, of harvesting and curing the crops and reduces the quality of the tobacco. About one-fourth of the acreage is cultivated or in pasture:., and tile. rest, is in forest or in other uses. The cultivated areas are used chiefly for row crops, but this soil is well suited to all the locally grown. crops. Inten- sive practices that effectively control runoff and erosion are necessary in the cultivated areas. (Capability unit Ifle--1, woodland suitability group 5, wildlife suitabil- ity group 1) Al><gusta, Serres Tile Augusta series, consist, of Nearly level and. gently sloping soils that are deep and sonaewha,t poorly drained. These soils nreon low stream terraces near the large streams in. the county. They have formed in alluvial deposits under forest,. A seasonally high water table is at a depth of 11/2 feet. Natural fertility and the content of organic matter are low, permeability is moderately slow, and the available water capacity is lnediurn. The shrink -swell potential is moderate. These soils are frequently flooded, but, the floodwaters remain for only % short period of time. Ex- cept in areas t,hait have received lime, these soils ire very strongly acid. Response, is fairly good if suitable applications of lime and fertilizer are made. Augusta soils are of only minor importance for farYn- ing. Most of the acreage is in hardwood forests, but some lreils are used for pasture. C7nly a small acreage is cul.ti- vated. 13 Representative profile of Augusta fine sanely loam in a hardwood forest, 200 feet, south of Swift Creel, and one- half mile west of Old Stage Road: Al— 0 to ti inches, dark grayish -brown (10YR 4/2) fine sandy loam; weak, medium, granular structure, very fri- able when moist; many fine and medium, woody acid fibrous routs; many fine pores; strongly acid; abrupt, smooth boundary. A2-6 to 13 inches, pale -brown (10YR 6/3) fine sandy loam; few, fine, distinct, brownish -yellow and many, medi- um, prominent, dark yellowish -brown mottles; weak, medium, granular structure; very friable when moist; coanmon, fine and medium, woody roots; many Sec=, pore:?; few fine mica flames; Strongly acid ; clear, wavy boundary. 131-13 to 16 inches, }sale-broi-ni (10YR 6/3) heavy sandy laam ; common, fine, distinct, brownisli-yellow mot- tles and many, medium, prominent, gray mottles; weak, medium, subangular blocky structure tending to massive; vert* friable when moist, slightly sticky and slightly plastic when wet; many fine pores; thin clay films; very strongly acid; clear, smooth bound- ary. B21t---- 1.6 to 24 inches, yellowish -brown (10YR 5/8) sandy clay loam; many, medium, prominent, light; gray inottles ; moderate, medium and coarse, subangular blocky structure; friable when moist, slighty sticky and slightly plastic when wet; few, fine and medi- um, woody roots; inany fine pores; thin clay films on ped surfaces; very strongly acid; clear, wavy boundary. B22t--24 to 36 inches, reddish-yellow (7.5111 6/8) sandy clay loam; many, medium, prominent, light -gray mottles; weak, medium, subangular blocky ,structure; friable when moist, slightly sticky and slightly plastic when wet; few, medium, woody roots; common fine pores; thin Clay films on ped surfaces; very strongly acid; gradual, smooth boundary. B3--36 to 43 inches, light -gray (2.5Y 7/2) heavy fine sandy loam ; many coarse, prominent, yellowish -brown (10YR 5/8+) mottles; massive; friable when moist, sticky and slightly plastic when wet; few, fine, woody roots; many fine pores; strongly acid; clear, smooth boundary. 0--43 to 50 inches +, gray (10YR 6/1) candy loam; few, fine, Prominent, yellowish -red mottles; massive, very fri- able whefi moist, nonsticky and nonplastic wvhen wet; common fine pores; medium acid. The A horizons range .from fi to 1.5 inches in total thick- ness, and from dark bray or dark gravlsh brown to pale brown in color. The B horizons range from 10 to 30 inches in total thickness and from sandy loam to clay loans in texture. Their color ranges from pale brown to reddish yellow mot - tied with gray. The gray colors increase with depth, and the lower part of the profile is mostly gray or is entirely gray. The subsoil has weak to moderate, fine to medium, sub- angular blocky structure. The combined thickness of the surface layer and subsoil ranges from 18 to 43 inches. Depth to bedrock ranges from 5 to more than 15 feet. Augusta soils occur with Altavista and wahee soils. They are less well drained than the Altavista soils and lacy the firm, clayey subsoil that is typical of the Wallee soils. Ugusta fine sandy loam (0 to 4 percent, slopes) (Au). --- This is the only soil of the Augusta, series mapped in JNrake County. It is on low terraces. The surface layer is dark -gray to pale -brown fine sandy loa n, and it has a total thickness of 6 to 15 inches. The subsoil is pale - brown. to reddish-yellow, friable sandy clay loan]. to clay loam mottled with gray, and it is 10 to 28 inches thick. Infiltration is good, and surface runoff is Slow to zne- dium. If this soil is (Irained, it is easy to keel) in good M SOIL SLT'RVLY t.ilt.ti and can 'bo worked, thr•oughoaat a wide, range of moisture content, Most of the acreage is in forest, but some. areas -ire in pasture or are cultivated, If this soil is properly drained, it is suited to most of the locally grown crops. 1i.de. quate drainage is required, however, for it to be well suited to rosy- crops. The aa,reas that liave been cleared are used chiefly for ptisture. (Capability unit I:IIww--2, wood- land suitability group 4, wildlife suitability group 2} In the Bibb series are soils that are poorly drained. and. nearly level. or gently sloping. These, soils are on the flood plains of streanis and ill depressions and draws in the uplands. They have formed in coarse loamy allu- vium and in local alluvium. A seasonally high water ta- ble is at the surface. Natural fertility and the content of organic hatter are low. Permeability is moderate to moderately rapid, and the available water capacity a-nd the shrink -swell potential are .low. These soils are frequently flooded for long periods of time. Except in areas that have received lime, they are strongly acid. Response is fairly good if suitable applications of Iime and fertilizer are made. Bibb soils are riot important for farming. Practically all of the acreage is in mixed hardivoods and pules. In this county the Bibb soils are mapped only in an undiff- erentiated unit -.with Wehadlcee soils. Representative profile of a Bibb sandy loam in a wooded are,, three-fourths of a mile south of F.C. Pearce Store, 45 yards west of county road, and 25 yards north of a creek 01-1 inches to fl, undecomposed forest litter. 411—(i to 6 inches, gnoyish-brown (2.5Y 5/2) sandy loam., many, fine, prominent, yellowish -red mottles; moder- ate, fine and medium, granular structure; very fri- able when moist; many fine, woody and fibrous roots; common fine mica flakes; medium acid; abrupt, vwavy boundary. 3112-6 to 9 inches, very pale brown (10YR 7/4) coarse sand. fete, fine, prominent, reddish -bellow mottles; single grain; loose when moist; few, fine, woody and fibrous roots; medinxn acid ; abrupt, wavy boundary. B21g t) to 20 inches, grayish-browvn (2.5Y 5/2) fine sandy' loam; few, fine, prominent, yellowish -red wid coro- nion, medium, faint, light -gray anot-tles ; structure - less; very friable when moist, slightly stfehy and sligtxtly plastic when wet: few~, fine, woody and fibrous roots; many fine mica flakes; strongly acid; abrupt, wavy boundary. B22g--20 to 36 inelies, grayish -brown (10YR ti!2) sandy loam; strneturele6s; very friable when moist, non- stieRy and nonplastic when wet; common fine mica. flakes; wrongly acid; abrupt, wavy boundary. Cg --36 to 42 inches +, gray (1OYR 5/1; sand containing lenses of very fine sandy loscxn f, to '/ inch thick; single grain; loose when moist; (the very fine sandy loam is massive and is very friable when moist) ; mart' fine mica fhxkes; slightly a)cid. The ti horizons range from 4 to 12 inches in total thick- ness, from grayish brown to very dark grayish brown or very hale brown in color, and from sandy loam to coarse sand in texture. The B horizons are variable in color and texture. Their color ranges from light brownish gray to black mot- tled with gray and brown, and their texture ranges from sandy loam to loam. These soils are massive or single grain and are very friable to loose. The combined thickness of their surface layer and subsoil is about 36 inches. Depth to bedrock ranges froin 4 to more than 15 feet.. Borrow area, identified by clime, oil the soil ]nap, is a. miscellaneous land type consisting of areas where the soils have been excavated to a, depth of several feet. The more recent areas of this land type are bare and ire sub- ject to accelerated erosion. The older areas are eroded. Where pines sand other plants are pro -vino;°, lloi ever, many of the older areas are sotnew hat stabilized. The Borrow areas are not extensive, ball, small areas are scattered throughout the cotllity. This miscellaneous land type is so variable that the. areas require onsite ilivestigaition to see if they are suit- able for° the intended Ilse. (Not: placed ill ai capability unit,- woodland suitability group 13, wildlife suitability group 5) Buncombe Series The, Buncombe series consists of nearly level, some- what excessively drained soils on flood plains of the large streams in the county, These soils have formed ill sandy allm,ial deposits. They have a seasonally hip h wa- ter table at a depth of approximately 21/� feet. Natural fertility and the content of organic. matter are very low, and permeability is rapid. The available water capacity and the shrink-sivell potential are low. `L`hese soils are frequently flooded, but the, floodwaters remain for only a. brief period of time. Except in areas that have received lime, reaction is strongly acid. Re- sponse is moderately good if suitable applications of lime and fertilizer are made. Buncombe soils are not important, for farming. They ale mostly iii forest, but a, small acreage iscultivated or ill pasture. Representative profile, of a Bancornbe loamy sand in a. cultivated field 4 miles southeast of Shotwwell, 25 yards south of a creek, and 50 yards northwest of the Johnston County line Ap.­-O to 1.0 inches, dark grayish -brown (10YR V2) loamy sand; single grain; loose when moist,.: Many, fine and medium, woody roots; few- fine mics r7alces ; strongly acid; abrupt, smooth boundary. C1 10 to 25 inches, light yellowish-hz°own (JOYR. 6/4) saxcl; atingle grain; loose when moist; common, fine, woody roots; few fine mics hakes; strongly acr, d ; abrupt., smooth boundary. C2-25 to 3' inches, light yellowish -brown (10YR 6/4) and; common streaks of dark yellowish brown (10YR. 4/4) that are one-fourth of in inch or less thick; single grain; loose when moist; few in.edlum mica flaks . ; strongly acid; abrupt, smooth boundary. C3-33 to 40 inches -f-, pole -brown (10YR (3/3) sand; single grain ; loose when moist; few~ inedium inion. flakes; strongly acid; abrupt, smooth boundary. The :4 horizon ranges from 4 to 10 inches in thickness, from dart; grayish browvxx to bale brown in color, and from sand to loamy sand in texture. The total thickness of the C hori-- zons ranges from 30 to more than 3�3 inches. Tho C horizons range from pale brown to yellowish brown in color and from sand to loamy sand in texture. The substratum extends to a depth of more than 40 inches. Depth to bedrock rangers to more than 10 feet. Buncombe soils occur with the Congaa.ree, soils but are coar•„er textured than those soils - Buncombe soils (0 to 2 percent slopes) (80. --These are tete only Buncombe soils snapped in Wale County. They haAre a surface layer of dark grayish --brown to pale- WAKE, COUNTY, NORTH- CAROLIN brown salad or loaaaiy could. 4 to 1.0 inches thick. Be- neath the surface layer .are, layers of pale -brown to yel- lowish -brown sand or lmoay sand that range from 30 to more than U inches ill total thickness. Droughtiness is a hazard during dry Spells, alld these soils are subject to leacping during wet spells. Infiltra- tion is good, and surfiwe runoff" is slow. The soils a.re, easy to keep in good ti lt_li and can be worked through- out. wide range of rno.is we content. These soils are fainly well suited to corn, trtWk crops, small grains, and pasture. Most of the. aerea.ge, is in for- est, but a small aereaahe is in pasture. (Capability unit, IVs. -1, woodland suitabi?itav group 3, wildlife snit;abilitY group 4) The Cecil series consists of gently sloping to steep, well -drained, deep soils of the, Piedmont. u.plta,alds. These soils Lire on side slopes and on rowided divides tlrtat have a difference, in elevation of about, 75 feet between the highest and the lowest points They occupy large areae in the northern and central parts of the county, where they leave formed under forest in naterial than weathered from gneiss, schist, gild other acidic rocks. The water table renaiiis below the solum. Natural fertility and the content of organic matter are lour, and permeability is moderate. The available wa- ter capacity is medium, and the shrink -swell potential is moderate. Except in areas that have received lisle, these soils are medium acid. to strongly acid. Response, is good if suitable applications of lime. and fertilizer are made. Cecil soils are, fairly important, for farliiing. Neverthe- Iess, march of the a:crea.ge is in forest. Paepreseiitative profile of a Creeil sandy loam ill a cul- tivated field one-half. mile, northwest of Barton geek where N.C. 1-1; way No. 50 croUses that strea,in.: Ap-4 to C; inches, dark -brown (7.5YR 4/3:) saiady loam; wveak, fine and medium, granular structure; very friable when moist: many line, fibrous roots; many facie pores; common small quartz pebbles; strongly acid; abrupt, wavy boundary. B2R---6 to 1.1 inches, reel (2.5YR 5/8) clay; strong, fine~ and medium, subangular blocky structure: firm when moist, sticky and plastic. when wet; common, fine, fibrous roots; many fine pore,; medium day firms on the surfaces of most: peas; medium. acid; clear, smooth boundary. B22t-11. to 24 inches, red (2.5Y8 4/3) clay; strong, fine and medimn, subangular bloeky structure; firm when moist, sticky and, plastic when wet; fear, line, fibrous roots; many fine pores; medium clay films on the surfaces of most Peds; few fines mica. flakes; strongly a(.—id; clear, wavy boundary. 823t-24 to 34 inches, red (2.,';YR 4/6) clay; few~, fine, prominent, reddish -yellowy mottles; strong, fine and medium, subangular blocky structure; firm when moist, sticky and plastic when wet; few, fine, fibrous roots; many fine; pores; medium clay films on the surfaces of most Peds; few fine mica flakes; medium acid; clear. wavy boundary. ]33--34 to 511 inches, red. (2.5X8 4/S) clay loa ra, ; common, fine, prominent, reddish-yellow mottles; weak, medi- um and coarse„ subangular lalocky structure, friable when moist, slightly sticky and slightly plastic when wet; medium clay filins on the vertical surfaces of pods; ; common fine mica flakes; strongly acid; abrupt, smooth boundary. 15 C-50 to 72 inches d-, red (2.55:8 4/6) loam. (di fnt-egrated schist) ; common, fine, prominent, reddish. -yellowy and .few~, fine-, distinct, dark -red mottles; suasive; very friable when moist, nonstick-, and nonplaastie when wet; strongly acid. The :i borizon ranges.from darts grayish brown or yellow- ish brown to dark brown or red in color, from sandy loam or gravelly sandy loam to clay loam in texture, and from 3 to 12 inches iaa thickness. The B2 horizons range from 28 to 50 inches in total thickness. They have as red colon of 2.5Y8 hue and a clay texture. Yaa places these soils contain a -vellowish- red B1 horizon, and the 83 horizon is streaked with yellowy in sonar: areas. The combined thickness of the surface layer and the subsoil is 36 to 60 inebes..Depth to hard rock ranges from 5 to more than 15 feet. Cecil soils occur with Appling, Lloyd, Madison, and George- ville soils. They hawse as auore reddl�sh (solar aanci a. moray_ clayey subsoil than the Iptiling .soils. Cecil sails have a. lighter colored surface layer, a, lighter red color beneath the surl..a.ce layer, and more sand in the subsoil than the Lloyd soils. They are thicker and less micaceous than the Maadiwon soils and have less silt and more sand throughout the profile than the Georgeville soils. Cecil sandy loam, 2 to 6 percent slopes (CeB).---This soil is on broad, smooth interstreaam divides. Its surface layer is dark grayish brown to yellowish -brown sandy: loam 7 to 12 inches thick. The subsoil is red, firm clay 30 to 50 inches thick. Included in niappiug were some areas of a soil that, has a surface payer of fine sandy loam. Also included were a. few areas where the slopes vire less than 2 percent. Infiltration is good, and surface runoff is medium. The hazard of erosion is moderate. This soil, is easy to keep in good tilth and can be worked throughout a vide range of moisture content. About one-half of the acreage is cultivated or in pas- ture, and the rest is in forest, or ill other uses. Where. this soil Baas been cleared, it is used chiefly for row- crops and pasture, but it is well suited t.o all the, locally grow I crops. Practices that effectively control runoff.. and ero- sion are needed in the cultivated areas. (Capability snit II0-1, woodland suitability group 5, wildlife suitabil- ity group 1) Cecil sandy loam, 2 to 6 percent slopes, eroded. (Cc -32)- -This soil is oil broad, smooth. interst.ream divides in the upland;;. Its surface, ha.yer is 3 to 7 inclies thick. In many places it is a mixture, of the reniainill( original surface, layer and of maa.tcriaa.l Froin the subsoil.. Iia the less eroded ,axeas, the surface layer is yellowish -brown sandy tonin, but the color ranges, to reddish brown andthe texture, raiiges to clay loan;in the more eroded spots. Tbo subsoil. i s red, firm clay that is 30 to 50 inches thick. Included with this soil in mapping were sone areas where the surface layer is fine sandy loam. Also included veers some severely eroded spots where the subsoil is exposed. The severely eroded spots make, up from 5 to 2ti pe-rcent. of alae acreage in the mapping unit. Infiltration is fair, and surface runoff is rnediurxi. rhe hazard of further erosion is moderate. Ths soil is diflactilt to keep in good tilth, but it can be worked throughout a. fairly wide range of nzoist,ure e,oriteiit. X crust forms on the severely eroded spots after hard rains, and clods form if those areas are worked when wet. The crust and the clods interfere with germination. As a result, stands of crops are poor and replanting of the severely eroded areas may be necessary. UM SOIL SURVEY About half of the acreageis cultivated or in pasture., and the rest is in forest or in other. uses. Where this soil is cultivated, it is used chiefly for row crops, but it is well suited to all the locally grown crops. Practices that effect=ively control runoff and erosion are needed in the eultivatecl areas, (Capability unit IIe-4, woodland suit- ability group 5, wildlife, suitability group 1) Cecil sandy loam, 6 to 10 percent slopes (CeC).—This soil is on short to long side slopes in the uplands. Its sur- face laver is tto 12 inches thick, and it is dark grayish - brown to yellowish -brown: sandy loam. The subsoil is red., firm clay 30 to 45 inches thiel, Included with this soil in mapping were some areas w -here, the surface layer is fine sandy loam. Infiltration is good, and surface runoff is rapid. The hazard of erosion is severe. This soil is easy to keep in good t.ilth and can be worked throughout a i ide range of xnoisture. content. _about one. -fourth. of the acreage is cultisrated or in pa.s.- ture, and the rest; is in forest; or in other uses. The caalti•- vaated areas are cased chiefly for rotiv crops, but this soil is well suited to all the locally groee•n crops. Practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit Ille--1, Avoodland suitability group 5, wildlife suitability group 1) Cecil sandy loam, 6 to 10 percent slopes, eroded (CeC?-).--This soil is on short to long side slopes in the uplands. The surface layer is 3 to 7 Inches thick and ill many places it is a mixture, of the. remaining original surface soil and of material froan the subsoil. In the, less eroded areas, the surface layer is yellow=ish -brown sandy to,im. In the, more eroded shots, the, color ranges to red- dish brown and the texture ranges to clay loam. The stub - soil is red, firin clay 30 to 45 inches thick. Included in mapping were some areas where the sur- face layer is fine sander loam. Also included were some, severely eroded spots where the subsoil is exposed. The severely eroded areas (nape tip froin 5 to 25 percent of the acreage ill the mapping unit. Infiltration is fair, and surface runoff is rapid. The hazard of further erosion is severe. This soil is difficult to keep in good ,tilth, but it caan be. worked throughout a fairly wide range of moisture contealt. A crust fornns oil the severely eroded spots after hard rrthis, cane] clods form if those areas are worked tivlien wet. `I'h.e crust and the: clods interfere, with germination. As a. result., st ands of crops are poor and replanting of the severely eroded areas may be, necessary��. About, one --fourth of the acreage, is cultivated or in pas- ture, and the rest is in forest or in other uses. This soil ns well suited to all thelocally grown crops. The areas that are cleared are used chiefly for row crops and pasture. Practices that Ptfectivel,y control runoff and erosioll are needed. (Capability unit Zile 1, woodland siutability group 5, wildlife suitability group 1) Cecil sandy loam, 10 to 15 percent slopes (CeD .—This is a well -drained,- slightly to moderately eroded soil on narrow side slopes bordering upland dra:ina.geways. Where erosion is only slight, the surface layer is dark grayish-brovni to yellowish -brown sandy- loani 6 to 10 inches thick. Where erosion is modenite,, the surface layer is yellowish -brown to reddish -brown sandy loam to clay loam 3 to 6 inches thick. The subsoil is red, firm. clay that is 30 to 40 inches thick. Included with. this soil in inappilig were areas where the texture of the. surface ]aver is fine sandy loam. Also included were nw iy areas where. pebbles and cobbles are oil the surfacelaid. in the saarface layer, and. some severely eroded spots where the subsoil is exposed. Infiltration is fair to good, and surface runoff is very rapid. The hazard of erosion is very Sev ere. Where, this soil. is only slightly eroded, it is easy to keep in good tilth. AlThere it, is moderately eroded, it is difficult to keep in good tilt.h. This soil can be worked throughout a fairly wide range of moisture content. A. crust f'orrns on the severely eroded spots after haxd rains, how>eveI and clods form if those areas are worked when jvet. The creast and the clods interfere with germination. As it, result., stands of crops are, poor and replanting of a. severely eroded spot is sometimes necessary. About one-fourth of the <aereige is cultivated or in pas- ture, and the rest• is in forest. This soil is waited to all the: locally grown crops, but practices that effectively control runt and erosion are. needed in the carltivated areas. (Capability unit, M-1, woodland suitability group 5, wildlife suitability group 1) Cecil sandy loam, 15 to 15 percent slopes (CeF)a -This is a slightly to moderately eroded soil on narrow side slopes bordering upland drainageivays. Where erosiollis only slight, the surface layer is dark grayish -brown to yellowish -brown sandy loam 5 to 9 inches thick. Where erosioll is moderate., the surface, layer is only 3 to 6 inches thick, its color ranges from yellowish brown to reddish brown, and its texture ranges to clay loans. The subsoil is red, firm clay 30 to 36 inches thick. Included with this soil ill allapping were some areas wlaex°e the subsoil is only 18 to t30 inches thief, land other areas where the surface layer is fine sanely loam. Also included were many areas wherepebbles and cobblestones u.Ie in the surface laver and oil the. surface; a few se.verely eroded spots whey the subsoil is exposed; and some. areas of Cieorgevillc silt loamy and of Floyd foams. Infiltration is fair to good, and surface, runoff is very ralaid. This ,aril. is highly susceptible to erosion. Practically all of the acre.u,ge is in fore -at. This soil is not stilted to (:raps that realaaare cultivation. Areas that haa.ve been cleared call. be, used for permanent lla.y and pastille. (C'al�aahility unit �'Ie 1, woodlaala(1 suitability group 5, wildlife. suitability group 1 ) Cecil gravelly sanely 16am, 2 to 6 percent slopes (CgBin rl`his soil is on broad smooth interstreaari divides in the uplands. It has a surface layer that is 7 to 1.2 inches thief and consists of dark grayish -brown gravelly sandy loam that is 15 to 30 percent pebbles. The subsoil is red, firan clay 30 to 50 inches thick. In limny places cob.- blestones aro in the surface layer and on the surface. Infiltration is brood, and surface runoff is moderate. The hazard of erosion is moderate. This soil can be worked throughout, a -riderange of moisture content. Where the content of pebbles and cobblestones is high, however, tillage is difficult. About half of the acreage is cultivated or in. pasture, and the rest is in forest or in other uses. INrhere, this soil has been cleared, it is used. chiefly for row, crops and pas- WAKE COUNTY, NORTH CAROLINA tore, but it is well suited to all the locally grown crops. Practices that effectively control runoff and erosion are needed in the cultic a.l od. areas. ( Capability unit Ile -..I, woodland suitability group 5, wildlife suitability group 1) Cecil gravelly sandy loam, 2 to 6 percent slopes, eroded (Cq52).—This soil is on broad intorstream. divides in the uplands. In many places its surface layer is a mix- ture of the: remaining original surface soil and of mater- ial frown the subsoil. In the less eroded spots, the surface layer is yellowish --brown gravelly sandy 10,11". ILI the more eroded spots, the color ranges to reddish brown and the texture; ranges to graselly clay loam. ThIeLl.ess of tale surface laxer ranges from 3 to 7 inches, and the content Of gravel ill the- surface, layer ranges from 1:; to 30 per- cent. Included NvIth t -his soil ill mapping were: soave areas that contain cobblestones..,lso included were sone se.a-erely eroded spots where the subsoil is exposed. These se- verely eroded spots nada=e, up from 5 to 35 percent of the acreage 1.11 the ina.pping unit. Intiltra-tion is fair, and surface riuloff is medium. The hazard of further erosion is moderate. This soil is diffi- cult to keep in good tilth„ but it can be worked through- out: a fairly wide range of moisture content, A. crust forms 0n the severely eroded Spots after Bard rains, and clods form if those areas are worked when pvet. The crust and the clods interfere «•ith sex°1"i ia.tion. As a result, stands of crops ,ire. poor and replanting of the severely eroded shots ma,y- be necessary libout, half of the. acreage, is cultivated or ill pasture, and the rest is in forest or in other uses. Where this soil has been cleared, it is used chiefly for row crops and. pas- ture, but it is well suited to all the locally grown crops. Practices that effectively control runoff and erosion ire, needed in the cultivated areas. (Capability unit IIe..--1, woodland suitability group 5, wildlife suitability group 1) Cecil gravelly sandy loam, 6 to 10 percent slopes (CqC).-._.This soil is on short to long side slopes in the upla-nds. It has a. surface layer that is 7 to 12 inches thick that, con,`ists of dark grayish-brosa•n sandy loam th<l,t, is 15 to 30 percent pebbles. The subsoil is reel, first clay, 30 to 45 inches thick. In inane plaaces cobblestones ,ire in the surface layer a1:11d on thesurface. Infiltratioil is good, and surface runoff is rapid. The hazard of erosion is severe-. This soil can be worked throughout a wide range of moisture content. AVI-iere. the content of pebbles and cobblestones is high, However, till- age is difficult. About one-fourth of the acreage is cultivated or in pas- ture, and the rest is in forest, or ill other uses. Where this soil has been cleared, it is used chiefly for row crops and pasture, but, it is well suited to all the locally groavn crops. Practices fha:t effectively control runof' and ero- sion are needed in the cultivated areas. (Capability unit IIIe-1, woodland suitability group 5, wildlife suitabil- ity group 1) Cecil gravelly sandy loam, 6 to 163 percent slopes, eroded (CgC2). 'This soil is on short. to long side slopes in the uplands. Its surface layer is 3 to 7 inches thick, and in marry places :it is a mixture, of theremaining ori - IM ginal surface soil and of material from the subsoil. In the less eroded areas, the surface layer is yellowish - brown gravelly sandy loam, but the color ranges to red- dish brown and the texture, ranges togravelly ch�y loam in the more eroded spots. The content of gravel in the surface layer ranges front 15 to 'R) 1pe-rceilt. The subsoil is red, firnl clay >10 to 45 inches thick. Iii anally places cobblestones are ill the surface htyer and on the- surface. Included with this soil in mapping were some severely eroded spots where the subsoil is exposed. 'These. areas make up from 5 to 25 percent of the acreage, in the, inap- [:ping° ilnit. Infiltration is fair,, and surface runoff, as rapid. Niue hazard of further erosion is severe. This soil is difiicalt: to keep in good filth, but it caws be, worked throughout a fairly wide range of moisture content. A crust, forms cn the severely eroded spots after hard rains, and clods form if those areas are. worked wlien wet. The crust and the clods interfere with ge.rmination.." a result, stauds of crops ,ire ,poor and replanting of the severely eroded spots is sometimes naecessarv. Abort one-fourth of the acreage is cultivated or in pas tune, acid the rest is in forest or in other uses. This soil is well suited to all the locally grown crops, but the cult.i.• voted areas are used chiefly for roar crops. Intensive practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit, IIIe�l, woodland suitability group 5, wildlife suitability group 1) Cecil clay loam, 2 to 6 percent slopes, severely eroded (C23). —'This soil is on smooth interstream divides. The, surface layer is red clay loans 3 to 6 inches thick. Mostly, it consists of n iterial from the subsoil, but it contains some material from the original surface layer. The subsoil is red, firm clav 30 to 50 inches thick. Includ- ed with this soil in mapping were small areas of soils that have a. subsoil of dark -red clay. Infiltration is poor, and surface ruia.off is rapid. The hazard of further erosion is .severe. This soil is difficult to keep in good tilt -h, and it caii be. ivorlted Nwithin only a narrow raaige of 'moisture content. A crust forms after hard rains, and clods form if this soil is worked when wet. The crust and the clods interfere with germination. As al restcl(, stands of crops are poor. This soil is suited to only, a limited number of crops grown. locally. 0111y a: small acreage is cultivated or in 1)alsture, and most of the, acreage is in forest. Where, cul- tivated crops a.re .;rotten, intensive practices that effee-. Lively control runoff and erosion are, necessary. (Capabil- ity unit I1Ie-2, woodland suitability group 5, wild- life suitaability group 1) Cecil cloyloam, 6 to 10 percent slopes, severely eroded i;CIC3).---This soil is on 11aarrow side slopes in the uplands. Its surface. layer is red clay loam 3 to €; inches thick. The surface layer consists mostly of material from the subsoil, but it, contains some material from the original surface layer. The subsoil is red, first clay 30 to 45 inches thick. Included with this soil in mapping were small areas of soils that have a. subsoil of dark -red clay, infiltration is poor. 'Surface runoff is very rapid, and the hazard of further erosion is very severe. This soil is difficult to keep ill good tilth,, and it caii be worked M] within only a, narrow range of moisture content. A crust forms aftir hard rains, and clods form if this soil is worked when wet. The crust and the clods interfere with germination. As a. result, a. good stand of crops is hard to obtain. This soil is suited to only a, limited number of crops grown locally. It is mostly in forest, and only a small acreage is cultivated or *nr pasture. If cultivated crops are grown, intensive practices that effectively control runoff and erosion are necessary. (Capability unit IVe­2' woodland suitability group 5, wildlife suitabil- ity group 1) Cecil clay loam, 10 to 20 percent slopes, severely eroded (CIE3).—This soil is on narrow side slopes border- ing upland drainageways. The surface layer is red clay loam 3 to 6 inches thick. Mostly, it consists of material from the subsoil, but it contains some material from the original surface layer. The subsoil is red, firm clay 30 to 40 inches thick. Included with this soil in mapping were small areas of a soil that has a subsoil of dark -red clay. Also included were a few areas where the slopes are greater than 20 per- cent. Infiltration is poor, and surface runoff is very rapid. This soil is difficult to keel) in good filth, and it can be worked within only a narrow range of moisture content. A crust forms after hard rains, and clods form if this soil is worked when wet. Because of the crust and the clods, a good stand of pasture and hay crops is difficult to obtain. This soil is suited to permanent hay, pasture, and for- est, but it is chiefly in forest. It is too steep and eroded for cultivated crops. (Capability unit JTIe­2, wood- land suitability group 5, wildlife suitability group 1) The Chewacla series consists of nearly level, somewhat poorly drained soils on the flood plains of most of the streams in the county. These soils have formed in allu- vial deposits of fine loamy material. A seasonally high water table is at a depth of about ll/,,> feet. Figure 3—Young corn on Chewacla soils that have been flooded by the waters of Crabtree Creek. Natural fertility and the content of organic matter are low, permeability is moderate to moderately rapid, and the available water capacity is medium. The shrink -swell potential is moderate to low. These soils are frequently flooded (fig. 3), but the floodwaters remain for only a brief period of time. Except in areas that have received lime, the soils are strongly acid. Response is good if suit- able applications of lime and fertilizer are made. The Chewacla soils in Wake County are not important for farming. Most of the acreage is in forest, and only a small acreage is cultivated or in pasture. Representative profile of a Chewacla, fine sandy loam in a cultivated field 100 yards north of Horse Creek and one-fourth of a mile east of N.C. Highway No. 98: Ap—O to 6 inches, brown (10YR 5/3) fine sandy loam; weak, fine, granular structure; very friable when moist; many to common, fine, fibrous roots; fine pores; common fine mica flakes; slightly acid; abrupt, wavy boundary. A1-6 to :10 inches, dark yellowish -brown (10YR 4/4) fine sandy loam; weak, fine, granular structure; very fri- able when moist; few, fine, fibrous roots; common fine pores; many small mica flakes; slightly acid; abrupt, wavy boundary. B21-10 to 18 inches, dark yellowish -brown (10YR 4/4) silt loam; many, medium, prominent, reddish-yellow and common, medium, distinct, pale -brown mottles; weak, fine, subangular blocky structure; very friable when moist, nonsticky and nonplastic when wet; few, fine, fibrous roots; common fine pores; many fine mica flakes; slightly a.cid; abrupt, wavy boundary. B22-18 to 38 inches, pale -brown (10YR 6/3) sandy loam; common, medium, prominent, brown mottles and common, medium, distinct, grayish -brown mottles; weak, medium, subangular blocky structure; very fri- able when moist, nonsticky and nonplastic when wet; few fine pores; common black concretions and few fine mica flakes; slightly acid; abrupt, smooth boundary. C1g-38 to 42 inches, light brownish -gray (2.5Y 6/2) fine sandy loam; common, medium, prominent, dark yellowish-broNvu mottles; structureless; very friable when moist, nonsticky and nonplastic when wet; few fine pores; few fine mica flakes; very slightly acid; abrupt, smooth boundary. C2g­42 to 48 inches +, gray (10YR 5/1) fine sandy loam; few, medium, prominent, dark -brown mottles and few, fine, distinct, yellowish -brown mottles; structureless; very friable when moist, nonsticky and nonplastic when wet; few, fine, fibrous roots; common fine pores; very slightly acid. The A horizons range from 4 to 12 inches in combined thickness, from brown to dark grayish brown or dark yellow- ish brown in color, and from sandy loam to silt loam in texture. The B horizons range from 10 to more than 40 inches in total thickness and from sandy loam or silt loam to clay loam in texture. Their color ranges from light yellow- ish brown or pale brown to dark grayish brown in 7.5YR, 10YR, and 2.5Y hues. Mottles are at depths below 10 to 30 inches. The subsoil and substratum are massive or have weak, medium, subangular blocky structure. The profile ranges from 34 inches to more than 72 inches in thickness. Depth to hard rock ranges from 4 to more than 15 feet. Chewaela soils occur with Congaree and Wehadkee soils. They are less well drained than the Congaree soils and are better drained than the Wehadkee. Chewacla soils (0 to 2 percent slopes) (Cm).—The soils of this mapping unit are on the flood plains of streams. Their surface laver is brown to dark grayish -brown sandy loam to silt loam I to 12 inches thick. Beneath the surface layer, the color of the soil material ranges from WAICE COUNTY, NORTH CAROLINA brown to dark grayish frown, with mottles of brown and grey, and, the texture ranges from sandy loam or silt loam to clay. The total thiolmess of the profile ranges from 34 inches too more than 7 2 inches. In.filtraat.iOn is good, w d surface runoff is slow, The hazard of flooding is se ore, and the hazard of wetness is very severe. These sni:ls are easy to keep in good tilth and can be worked throughout a Nvide range of moisture content. Most of the acreage is in forest, but a small acreage is in pasture or is cultivated. These soils are fairly well suited to many of the locally grown crops, but subsur- face drainage is needed for crops that require good drainage. (Capability unit IIIw-1, woodland suitabil- ity group 1, wildlife selityabil:ity group 2) Colfax Series Soils of the Colfax series, as nia.pped in the county, lack a fragipa.n, alnd in the future will be assigned to some other series. The series consists of nearly level and gently sloping, soinewbat poorly drained soils on Pied- mont uplands. These soils are at the heads of drainage - ways, on .foot slopes, and in slight depressions. They halve formed under forest, in traansloct:tad material, and in material that weathered from most kinds of rocks in the county. A seasonally high water table is at a depth of about 1z/2 feet. Natural fertility and the content of organic matter are low. Permeability is inod.erately slow, and the available water capacity is mediuln. The shrink -swell potential is moderate. Except in areas that have received lime, these soils are strongly acid. Response is fairly good if suitable applications of lime and fertilizer are jade. The Colfax soils in this county are mostly in .forest and are not important for farming. `There they have been cleared, they are generally used for pasture or for waterways. The aixeas are mostly too small for uianag- iaag as a field independent of the surrounding soils. Representative profile of Colfax smidy loan in a ha,s- ture one-half mile south—we of 'Wakefield on county road. No. 2368 and 35 yards north of the road: Ap--0 to 7 ladles, very dark grayish -brown (10YR 3/2) sandy login; many, fine, distinct, dark -brown mot- tles ; -weak, fine, granular structure; very friable when moist; many fine, fibrous roots; many fine pores; strongly acid; abrupt. smooth boundary. Al -7 to 11 inches, dark grayish -brawn (10Y18 4/2) sandy loam; weak, flue, granular structure; very friable when moist: few, fine, fibrous roots; many lane pores; etrougly acid; abrupt, wavy boundary. A2-11 to 19 inches, grayish -brown (10YR 5/2) loamy sand; )yeak, fine, granular structure; very friable. when moist; brittle in place; rna.lay fine pores; strongly acid; abrupt, wavy boundary, B2t-111 to 31 inches, strong -brown (7.5YR 5/8) sandy clay loam; many, medium, prominent, gray mottles; moderate., coarse, subangular blocky structure; firm when moist, sticky and plastic when Wet; few fuze pores; thick clay films on most ped surfaces; strongly acid; clear, smooth boundary. 132tg--31 to 36 inches, gray (10YR 6/1) sandy clay loam; common, fine, prominent., yellowish -brown mottles; wear, medium, subangular blocky structure; firm when moist, slialatly sticky and slightly plastic when MI wet; few fine pores; few thin clay films, on ped stir - faces.: strongly acid; gradual. smooth boundary. Cg -36 to 45 inches +, gray (10YR 5/1) sandy loam; few, fine, prominent, yellowish -brown mottles; massive; firm when moist, slightly sticky and slightly plastic when wet.-, many fine pores; strongly acid. The combined thickness of the 1k horizons ranges from 5 to 20 inches, and the: color of those horizons ranges from light gray to very dairy grayish brown. The B horizons range from 15 to 50 inches in combined thickness, and they have a texture of clay or clay loam instead of sandy clay loam in some places. The color of the B horizons ranges from light olive yellow to strong brown or gray in hues of 2.5Y, 10YII., and 7ZiYR. Mottles that have the gray color of a gleyed soil are in the uppermost 10 inches of the B2t horizon, In places these soils contain a. brownish -yellow B1 horizon. The com- bined thickness of the surface layer and subsoil ranges from 24 inches to 60 inches. Depth to hard rock ranges from 5 to more than 15 fest.. The Colfax soils occur with Helena and Worsham soils. They are less well drained, have less clay in their subsoil, and are less firm than the Helena soils. The Colfax soils are better drained than the Worsham soils. Colfax sanely loam (0 to 6 percent slopes) (Cn) —This is the only soil of the Colfax series mapped in Wake County. It occurs at the heads of drainageways, on foot slopesA and in slight depressions. The surface layer is light -gray to very dark grayish -brown sandy loam 5 to 20 inches thick. The subsoil is 15 to 50 inches thick and is light olive -yellow to ,strong -brown or grapy, firm sand clay loam or clay loam that is commonly mottled with brown, yellow, and gray. Included with this soil in snap- ping were a fe)v areas of a soil that has a surface layer of silt :loam. Infiltration is good, and surface runoff is medium to slow. This soil is easy to keep in good tiltli, and it can be worked throughout a gide range of moisture content. Most of the acreage is in forest, but this soil is suited to many of the locally grown crops. The areas that have been cleared are used chiefly for pasture, or waterways. (Capability unit IIIw-2, woodland suitability group 4, wildlife suitability group 2) Congaree Series The Congaree series consists of nearly level, well - drained soils on the flood blains of most of the, streams in the coulity. These soils have formed in deposits of fine loamy material. A seasonally high water table is at a depth of about 2? � feet. Natural fertility and the content of organi.e platter are low, and. perineability is moderate to moderately rapid. The available water capacity is medium, and the shrink - swell potential is moderate to low. These soils are flooded frequently for a brief period of time. Except in areas that have received time, they are strongly acid. The Congaree soils of Wake County are fairly impor- tant for farming. Alost of the, acreage is cultivated or ill pasture, but a spaa.11 acreage, is in forest. Representative profile of Congaree fine sanely loam on Sycamore Creek, 11i� inile , south of Ebenezer Church in a wooded area one, -fourth mile west of road: Ap - 0 to 3 inches, strong -brown (7.5YR 5/8) fine sandy loam; weak, fine, granular structure; very friable when moist; many fine, woody roots; medium acid; abrupt, smooth boundary. B21-8 to 20 leaches, dark -brown (7.5YR 4/4) heavy fine sandy loam; massive to weak, medium, subangular blocky 4trTWture; very friable when moist; common, fine, woody roots; strongly acid; abrupt, smooth boundary. B22-20 to 32 niches, strong -brown (7.5YR fi/g) fine sandy loam; nn,a ssive to weak, medium, subangular blocky structure; very friable when moist; few, fine and medium,.. woody roots.: common, fine mica flakes; strongly acid; abrupt, smooth boundary. C-32 to 42 inches -1-, yellowish -brown (10YR 5/6) loamy sand; single grain; loose when moist or dry; com- mon, fine mica flakes; few small pebbles; ,strongly acid. The .A horizon ranges from 4 to 12 inches in thickness, from Clark brown or brown to strong brown in color, and from fine sandy loam to silt loam in texture. The B horizons range from 10 to 30 inches in combined thickness, from fine sandy loam or silt loam to silty clay loam in texture, and from dark brown or strong brown to pale brown, brownish yellow, or dark grayish brown in color. In places gray mottles are Wow a depth of 30 inches. The C horizon ranges from yellow- ish brown to dark brown or gray in color and from loamy sand to silty clay loam in texture. It extends to a depth of 30 to more than 120 inches. Depth to bedrock ranges from 5 to more than 15 feet. Congaree soils occur with Ohewacla and Buncombe soils. They are better drained than the Chewacla soils and are finer textured throughout than the Buncombe soils. Congaree silt loam (0 to 2 percent slopes) (CP). ---This soil is on the flood plains of streams. It has a brown or dark -brown surface layer that is 4 to 12 inches thick. Beneath the surface layer, the soil material is silt loam that ranges from brown to dark brown in color and from 30 to 108 inches in total thickness. Infiltration is good and surface runoff is slow. The hazard of overflow is severe. This soil is easy to keep in good tilth, and it can be worked throughout a wide range of moisture content. Most of the acreage is cultivated or in pasture, but a small acreage is in forest. Where this soil has been cleared, it is used mainly for row crops and pasture. It is suited to many of the locally grown crops. (Capability unit IIw-2, woodland suitability group 1, wildlife suit- ability group 2) Congaree fine sandy loam (0 to 2 percent slopes) (Co).— This Co):This soil is on the flood plains of streams. Its surface layer is dark -brown to strong -brown fine sandy loam 4 to 12 inches thick. Beneath the surface layer, the soil mate- rial ranges from pale brown or brownish yellow to dark brown or dark grayish brown in color, from fine sandy loann to silty clay loam in texture, and from 10 to 108 inches in total thickness. Infiltration is good, and surface runoff is slow. The hazard of overflow is severe. This soil is easy to keep in good tilth, and it can be worked throughout a wide range of moisture content. This soil is well suited to many of the locally grown crops. Most of .the acreage is cultivated or in pasture. ( Capability unit IIw-2, woodland suitability group 1, wildlife suitability group 2) Creedmor Series The Creedmoor series consists of gently sloping to moderately steep, moderately well drained soils of Pied- mont uplands in the : western part of the county. These soils are on rounded divides where the difference in ele- Figure I.—Profile of a Creedmoor silt loam. In these soils the lower part of the subsoil consists of clay that is very firm when moist, is very plastic when wet, and has high shrink -swell potential. vation is about 50 feet between the highest and the low- est points. They have formed under forest in material that weathered from sandstone, mudstone, and shale of Triassic age (fig. 4). The water table usually remains below the solum. Because of the slow permeability of the subsoil, however, there is a perched water table during wet seasons. Natural fertility and the content of organic matter are low, and permeability is slow. The available water capa- city is medium to high, and the shrink -swell potential is high. Except in areas that have received lime, these soils are very strongly acid. Response is good if suitable applications of lime and fertilizer are made. Much of the acreage is in forest, but a large acreage is cultivated or in pasture_ The areas that are cultivated WAKE COUNTY, NORTH CAROLINA a,re used intensively for growing tobacco and other row crops. Representative. profile of a Creedlnoor sandy loam in a stand of ,young pines orm-fourth mile west of Aiij-)ort Road, one-third mile south of U.S. 1=1 ghwa.y No. 70, and 5 yards north of farina road Ap-0 to 6 inches, gr€Iyikh-brown (2.5Y 5/2) sandy loam; weak, medium, granular structure; very friable when moist; many Lille, woody and fibrous roots ; few quartz pebbles; strongly acid; abrupt, wavy bound - ,try. A2-6 to 12 inches, pfile-yellow (2.5Y 7/4) windy loam; weak, medium, granular structure; very friable when moist, common, fine, woody: and fibrous roots; few shall quartz pebbles; very strongly acid; abrupt, wavy boundary B1-12 to 18 incises, pale -yellow (2.5Y 7/4) heavy sandy clay loam; common. medium, distinct, brownish -yellow mottles; Inodelrate, fine and medium, subangular blocky structure,: friable when moist, sticky and plastic when wet; few, fine, woody and fibrous roots; few small quartz pebbles; very strongly acid; slur, Yvavy boundary. B21t-18 to 20 inches, yellow (10YR. 7/8) clay loam; few, fine, prominent, red mottles and common, medium, distinet., strong -brown mottles; strong, fine and medi- uni. angular blocky structure; friable to firm when moist, sticky and plastic when wet; few, Fine, fibrous roots; thin clay films; few quartz pebbles; red mot- tles are disintegrated nodules; very strongly acid; clear, wavy boundary. B22t 20 to 40 inches, reddish-yellow (7.5YR 6/8) clay; many, coarse, prominent, light -gray (5YR 7/1) mot- tles and fete to common, fine, prominent, reel mottles; strong, fine and medium, angular blocky structure; very firm when moist, sticky and very plastic when wet; several disintegrated .roots in old root channels; rets mottles are disintegrated nodules•; thin clay films; very strongly acid; clear, tivavy boundary. B3t--40 to 58 inches, light -gray (5Y 7/2) clay; many, coarse, prominent, reddish-yellow (7.5YR 6/8) mottles and a few, fine, prominent, red mottles; woak, coarse, angular blocky structure tending to massive; very firm when moist, sticky and plastic when wet; com- mon disintegrated roots in old root channels; rets mottles are disintegrated nodules; few thin clay films; very strongly acid; clear, wavy boundary, C-58 to 96 inches, pale -red, disintegrated shale that generally has a texture of clay to sandy clay but contains pockets of gray clay; very strongly acid; abrupt, smooth boundary. R-96 to 100 inches -i-, dusky -red, stratified, weakly cemented sandstone of. Triassic age. III general, the 3_ horizons range from 3 to 15 inches in total thickness, from gray or grayish brown to pale yellow in color, gaud from sandy loam to silt loam in texture. In eroded areas, bowever, the color ranges to strong brown and the texture ranges to clay loam. The BI horizon ranges from 6 to 10 inches in thickness and from friable silty clay loans to sandy clay loam in texture. It has weak or moderate, fine and medium, subangular blocky structure. The B2t horizons range froin 14 to 50 inches in total thickness, from yellow to reddish brown or reddish yellow in color, and from friable to firm clay loam to very firm clay in texture and consis- tence. In those horizons the color of the mottles ranges from red or strong brown to light gray. Creedmoor soils have a high content of exchangeable aluminum. Creedmoor soils occur with Helena, Colfax, Blayodan, and White Store soils. They contain more exchangeable aluminum than the Melena soils, are better drained and have a firmer and more plastic lower subsoil than the Colfax soils, and are less well drained and have a flrmer and more plastic lower subsoil than the \Iayodan soils. The Creedmoor soils have a coarser textured and more friable upper subsoil than the White Store soils. al Creedmoor sandy loans, 2 to 6 percent slopes (CrB).-..-- This soil is on broad, smooth iizterstreani divides in the uplands. It, has a surface layer of gray to grayish-brown sandy loam that ranges from 7 t 15 hashes in total thickness. The upper part of the, subsoil is friable Sandy clay loam that; is C to 10 inches thick. The lower part is 14 to 50 inches thick. It consists of yellow to reddish_ brown clay loans that has common mottles of red a,nd light gray and is very firm when moist and very plastic when wet. Included with this soil in mapping were a, few areas where the surface laver is coarse sandy loam. Infiltration is (rood, but perinea,bi.lity is slow and sur- face runoff is mJiiimi The hazard of erosion is in(aderate. This soil. is easy to keep in good t.ilth. After heavy rains, however, tillage may be restricted because of the slow permeability of the subsoil. About half of the acreage is cultivated or in pasture, and the rest is in forest or in other uses. The cultivated areas are used chiefly for row crops, especially tobacco. This soil is well suited to most of the locally grown crops, but it contains a large amo>uat of exchangeable a,lu- minunl, whieh is toxic to some plants. In the, cultivated ares, practices that effectively control runoff salad erosion. are needed. (Capability unit Ile–3, woodlalad suitabil- ity group 11, wildlife suitability group 1) Creedmoor sandy loam, 2 to 6 percent slopes, eroded (CrB2).—This soil is on broad, smooth interstre.am divides in the uplands. Its surface layer is 3 to 7 inches thick. Iia many places the surface laayei is a mixture of the remain- ing original surface, layer and of inateriad frolxa the sub- soil. In the less eroded areas, the surface layer is grayish- bro-%vii to pale -yellow sandy loam, but in the snore eroded spots the color ranges to strong brown and the texture ranges to clay loam. The upper part of the subsoil is fri- able sandy clay loa.laa that is 6 to 10 inches thick. The lower part is 1I to 50 inches thick. It consists of Yellow to reddish -brown clay that has common mottles of red and light: gray and is very firm when moist and very plastic when wet. Included with this soil in mapping were a few places where the texture of the surface layer is coarse sandy loam. Also included were some. severely eroded spots where the subsoil is exposed. The severely eroded spots snake up from 5 to 25 percent of the acreage in the nlap- pin g uaait,. Infiltration is fair, and permeability is slow. Surface runoffis medium, and the hazard of further erosion is severe. This soil is difficult, to keep in good tilth. Because of the slowly- permea.able subsoil, tillage is restricted after hard rains. A. crust forums on the severely eroded spots after heavy rains, and clods form if those areas are worked when yet. The crust and the clods interfere with germination. As a result, stands of crops are poor and replanting of those areas may be. necessary. An even. stand of tobacco is bard to obtain. Plants in an uneven stand :nature at different times. This increases the. diffi- culty of harvesting and curing the crop and re.duces the quality of the tobacco. About half of the acreage is cultivated or in pasture, and the rest is in forest or in other uses. The cultivated areas are used chiefly for row crops, especially tobacco. This soil is well suited to most of the locally grown. SOIL SURVEY crops, but it contains a large amount of exchangeable aluminum, which is toxic to some plants. Practices that effectively control runoff and erosion are necessary in the cultivated areas. (Capability unit IIIe-3, woodland suitability group .1.1, wildlife suitability group 1) Creedmoor sandy loam, 6 to 10 percent slopes (CrQ.--- This soil is on narrow sideslopes in the uplands. It has a surface layer of gray to grayish -brown sandy loan,. 7 to 15 inches thick. :1'lie upper part of the subsoil is friable sanely clay loam 6 to 10 inches thick. The lower part is 14 to 40 inches thick. It consists of yellow to reddish - brown clay that has common mottles of red and light gray and is very firm when moist and very plastic when wet. Included with this soil in mapping were a fens- areas where the surface layer is coarse sandy loam. Infiltration is good, but permeability is slow and sur- face runoff is rapid. The hazard of erosion is severe. This soil is easy to keep in good filth. After heavy rains, how- ever, tillage may be restricted because of the slow per- meability of the subsoil. About one-third of the acreage is cultivated or in pas- ture, and the rest, is in forest-, or in other uses. The culti- vated areas are used chiefly for row crops, especially tobacco. This soil is well suited to most locally grown crops, but, it contains a large amount of exchangeable aluminum, which is toxic to some plants. Because of the slopes and slow permeability, practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit IIIe-...35 woodland suitability group 11, wildlife suitability group 1) Creedmoor sandy loam, 6 to 10 percent slopes, eroded (CrC2).—This soil is on narrow side slopes in the uplands. The. surface layer is 3 to 7 inches thick, and in many places it is a mixture of the refraining original surface soil and of material from the subsoil. In the less eroded areas, the surface layer is grayish -brown to pale -yellow sandy loam, but the color ranges to strong brown and the texture ranges to clay loam in the more eroded spots. The Mapper part of the subsoil is friable sa,aady clay loam that is 6 to 10 inches thick. The lower part, is 14 to 40 inches thick. It consists of yellow to reddish -brown clay that has cornrnon mottles of red and light gray and is very firin when moist and very plastic when wet. Included with this soil in mapping were a few areas where the surface layer has a, texture of coarse sandy loan. tlso included d were, some severely eroded spots where the subsoil is exposed. The severely eroded spots make up from 5 to 25 percent of the acreage in the map- ping unit. Infiltration is fair, but permeability is slow and sur- face runoff :is rapid. The hazard of further erosion is very severe. This soil is difficult to keep in good filth. Because of the. slow permeability of the subsoil, tillage is restricted after heavy rains. A. crust forms on the severely eroded spots after hard rains,, and clods form if those areas are worked when vet. The crust and the clods interfere with germination. As a result, stands of crops are poor .and replanting of the severely eroded areas may be necessary. An even. stand of tobacco is hard to obtain'. Plants in an uneven stand mature at different times, which increases the difficulty of harvesting and curing the. crop and reduces the duality of the tobacco. About one-third of the ac-rea:ge is cultivated or it pas- ture, and the rest is in forest or in other uses. The culti- vated areas are used chiefly for row crops. This soil is well suited to most of the locally grown crops, but it con- teins a barge amount ofexchaugeable aluminum, which is toxic to some plants. fiery intensive practices that effectively control runoff and erosion are necessary in the cultivated areas. (Capability unit We -3, woodland suitability group 11, wildlife suitability group 1) Creedmoor sandy loam, 10 to 20 percent slopes (CrE).--- This soil is on narrow side slopes bordering upland drainageways. It; is slightly eroded in some Waces and is rnoderately> eroded in others. In the slightly eroded areas, the surl:a.ce layer is grayto gratyish-rovrn sandy loam 6 to 14 inches thick. In the moderately eroded areas, the surface layer is only 3 to 7 inches thick and consists of grayish -brown or pale -yellow sandy loam to strong - brown clay loans. The upper part of the subsoil is friable sandy clay loam 6 to 10 inches thick. The lower part is 14 to 30 inches thick. It consists of yellow to reddish - brown clay than, has common mottles of red and light gray and is very firm when moist, and very plastic when wet. Included with this soil in mapping were aa, few places where the surface. layer is coarse sandy loam, and some areas where the surf, ace layer has a texture of silt loarrr. Also included were a few severely eroded spots where the subsoil is exposed. The severely eroded spots make up from 5 to 10 percent of the acreage in the mapping unit,. Infiltration is fair to good, and permeability is slow. Surface- runoff' is very rapid. Most of the acreage is in forest, but a small acreage is cultivated or in pasture. Where. this soil has been cleared, it is better suited to pasture or hay crops than to field crops. It is not suitable for cultivated crops, because of the strong slopes and the slowly permeable subsoil. (Capability unit VIe-1, woodland suitability group 11, wildlife suitability group 1) Creedmoor silt loam, 2 to 6 percent slopes (CtB):-- This soil is on broad, smooth interstream divides in the uplands. Its surface layer is gray to grayish -brown silt loans 7 to 1J inches, thick. The upper part of [lie. subsoil is friable silty clay loam 6 to 10 inches thick. The lower part is 14 to 50 inches thick. It consists of yellow to red- dish -brown clay that couta.ins connnon Irrottles of red and light gray and is very fir°rn when moist and very plastic when wet. Infiltration is good, but permeability is slow and sur- faa.ce runoff is naed Ium. The. hazard of erosion is moderate. This soil is easy to keep in good tilth. Because of the slowly permeable subsoil, however, tillage may be restric- ted after heavy rains. Most of the acreage is in. forest, but a small acreage is cultivated or in pasture. Where. this soil has been cleared, it is used chiefly for row crops arid pasture, but it is well suited to most of the locally grown crops. This sail has a :high content. of exchangeable a.lurninum,, how- ever, which is toxic to some plants. Because of the slopes and tlae slow permeability, practices that effectively con- trol runoff and erosion are needed in the, cultivated areas. (Capability unit Ile 3, woodland suitability group 11, wildlife suitability group 1) WAS4.E C.'O1:T:5TTY, NORTH CAROLIN Creedmoor silt loam, 6 to 10 percent slopes (CtQ - This soil is on broad, smooth interstream divides in the uplands. Its surface layer is gray to grayish -brown silt loam 7 to 15 inches thiels. The upper part, of the subsoil is friable silty clay loam 6 to 10 inches thick:. The lower part is 14 to 50 ouches thick. It consists of yellow to red. - dish -brown clay that hats common mottles of red and light gray and. is very= firm when moist and very plastic when wet. Infiltration is good; but pernleability is slow and sur- face runoff is rapid. The haaard of evosion is severe, This soil is easy to keep in good ti.lth. Because of the slowly perineablo subsoil, however, tillage may be restricted after heavy rains. Most of the acreage is in forest, but. a small acreage is cultivated or in pasture. Where this soil has been cleared, it is used chiefly for ro-*N, crops and pasture. It is well suited to most of the locally grown crops,, but it has a high content of exchangeable aluminum, which is toxic to some plants. Because of the, slopes and slow, permea- bility, intensive practices that effectively control runoff and erosion are needed in the cultivated areas. (Capabil- ity unit Ma --3, woodland suitability group 1.1, wild- life suitability group 1.) The Durham series consists of gently sloping to slop- ing, deep, well -drained soils on Piedmont uplands. '.These soils are mostly in the eastern part of the county, but small areas are scattered in other parts. They are on rounded divides where the difference in elevation is about 20 feet between the highest and the lowest points. The soils have formed. under forest in. material that weathered from granite, gneiss, and other acidic, rocks. The water table remains below the solum. Natural fertility and the content of organic, inatter are low's, and the available water capacity is medium. Perrneu,- bility and the shrink -swell potential are moderate. Ex- cept where lime has been. applied., these soils are strongly acid. Response is good if suitable applications of Time and fertilizer are made. Durhain soils are good for farming. )LLuc.h of the acre- ar,gre, is cultivated, and the, rest, is in forest or in other uses. Representative profile of a Durham loa.rny sand in a cultivated, field one-fourth anile east of the Bethany, Church and 1 yards south of road Ap--0 to 15 inches, pale -brawn (10YR (3/3) loamy sand; weak. coarse, granular structure; very friable when moist; medium acid; abrupt, wavy boundary. A2-15 to 18 inches, pale -yellow (2.5Y 7/4) loamy stand; weak, coarse, granular structure, very friable when moist; meds"um acid; abrupt, wavy boundary. B21t-18 to 30 inches, yellowish -brown (10YR 5/6) sandy clay loam; moderate, fine and medium., subangular blocky structure; friable when moist, slightly sticky and slighT,ly plastic Fvhesa wet; strongly acid; clear, smooth boundary. B22t---30 to 42 inches, browvnish-yellow (10YR 6/6) clay loam; few, medium, prominent, yellowish -red mot- tles; moderate, fine and mediae, subangular blocky structaare ; friable when moist, slightly sticky and slightly plastic when wet; strongly acid; gradual, smooth boundary. 23 3323t----42 to 50 inches, pale -brawn (10YR 6/3) Sandy clay loam; common, medium, distinct, yellowish -brawn and few, medium, prominent, yellowish -red mottles; moderate, fine and medium, subangular blocky strue- Lure; friable when moist, slightly sticky and slightly phistic when wet; strongly acid; gradual, snootla boundary. D21t---50 to 57 inches, pale -brown (10YR 6/3) clay loam ; common, medium, distinct, yellowish-broilm and few, medium, prominent, yellowish -red mottles, moderate, fine and medium, subangulaax blocky stricture; fri- able when moist, sticky and slightly pla4.tle when wvet, strongly acid; gradual, smooth boundary. 133t-57 to 60 inches, mottled red (2.7YR 4/8) and strong - brown (7.5YR 5/8) sandy clay loam and gray (10YR (3/1) clay,, weak, fine and medium, subangular blocky structure; friable when moist, slightly sticky and slightly plastic when wet, strongly acid; abrupt, smooth boundary. C--60 to 81 inches +, gray and black sandy loam saprolite that has the same structure as the original rock; strongly acid. The A horizons range from 3 to 20 inches in total thick- ness and from brown or pale brown to pale yellow or dark gray in color, The R horizons range from 30 to More than 50 inches in tonal thickness and from clay to sandy clay loaarn in texture. Their color ranges from yellow or pane brown to strong brown or gray in hues of 10YR and 7.5YR, The com- bined thicknew of the A horizons and B horizons ranges from 36 to 60 inches. Depth to hard rock ranges from 5 to more than 15 feet. Durham soils occur with Appling, ranee, Norfolk, and Granville soils. They have a coarser textured subsoil (less than 35 percent clay) than the Applint; and Vance soils, and they have a less firm subsoil than the Vance soils. The com- bined thickness of their surface layer and subsoil is less than that of the Norfolk soil,. Durham soils contain less, cxebange- able aluminum than the Granville ;oils. Durham loamy sand, 2 to 6 percent slopes (DuB,.--- This soil is on broad, smooth interstream divides in the uplands. Its surface layer is pale-bro-wn to dark -gray loamy sand that ranges from. 8 to 20 inches in total thick- ness. The subsoil is yellowy to strong -brown, friable sanely elay loam or clay loam that is mottled with yellowish red and is 30 to 50 inches thick. Included with this soil in snapping were a few areas where the slope is less than 2 percent. Also included were some areas where the surface layer is 18 to 30 inches thick. 1..11fi.traation is good, and surface runoff is Inediarnl. The linzaard of erosion is moderate. This soil is easy to keep in good tilt:h. and can be worked throughout a wide ranges of moisture content. .About two-thirds of the acreage is cultivated or ill pas- ture, and the rest is in forest or in other uses. This soit is well suited to all the locally grown crops, especially tobacco and cotton. Practices that effectively control run-- off and erosion are needed, however, in the cultivated areas. (Capability unit IIe-1, woodland suitability group 5) wildlife suitability group 1) Durham loamy sand, 2 to 6 percent slopes, eroded (DuB2).---This soil is on broad, smooth interst,rearn divides in the uplands. Its surface layer is 3 to 7 inches thick.. Ira Malay places it is a mixture of: the remaining originnl surface layer and of rnti,terial from the subsoil. In the less eroded areas, the surface layer is brown or pale - brown loamy sand, but, the color ranges to strong brown and the texture ranges to sandy clary loaani in the niore PM SOIL SURVEY eroded spots. Tho subsoil is 30 to 50 inches thick and is yellow to strong -brown, friable sandy clay loans to clay loam that is mottled with yellowish red. Included with this soil in mapping were some areas where the texture of thak surface layer is sandy loam. .alio included were some severely eroded spots where the subsoil is exposed. These severely eroded areas make up frown. 5 to 25 percent, of the acreage in the mapping unit. Infiltration is fair, and surface runoff is medium. The hazard of further erosion is moderate. This soil is diffi- cult to beep in good filth, but it can be worked through- out a fairly wide range of moisture content. .A. crust; forms on the severely eroded spots after hard rains, and clods formam if those=, areas are worked. Nvbela wet. The crust. and the clods interfere with germination. As a, result, stands of crops are poor and replanting of the severely eroded areas is sometimes necessary. An even stand of tobacco is hard to obtain. Plants in an uneven. stand mature it difiereiit, tunes. This increases the difficulty of harvesting and curing the crop and reduces the quality of the tobacco. About two-thirds of the acreage is cultivated or in. pas- ture, and the rest is in forest or in other lyses. This soil is well suited to all the locally grown crops, and the cultivated areas are used chieflv for row crops, especially tobacco and cotton. Practices that effectively control run- off and erosion are needed in the cultivated areas. (Capa- bility unit IIe-4 woodland suitability group 5, vrildlife suitability group 1) Durham loamy sand, 6 to 10 percent slopes (DuC).-- This soil is on narrow side slopes in the uplands. Its surface la y ver is pale -brown to dark -gray loamy sand that, ranges from 7 to 15 inches in total thickness. The subsoil is 30 to 40 inches thick and is yellow to strong -brown, friable sandy clay loam to clay l&am that is mottled with yellowish red. Infiltration is good, and surface runoff' is rapid. The hazard of erosion is severe. This soil is easy to beep hi good tilth and can be worked throughout a wide range of moisture content. About orae -third of the acreage is cult:.ivated or in pas.- ture-, and the rest is in forest or in other uses. This soil is well suited to all the locally grown crops, but the culti- V'Ited areas fare used chietly for row crops, especially tobacco and cotton, :Int®nsia_e practices that effectivell, control rualoff and erosion are necessary in the cultivated area . (Capability unit. IIIe-1, woodland suitability group 5, wildlife suitability group 1) Durham loamy sand, 6 to 10 percent slopes, eroded (DuC2).—This soil is on narrow, side, slopes in -the uplands. Its surface layer is 3 to 7 inches thick. In many places if, is a, mixture of the remaining original surface soil a.nd of material from the subsoil. In the less eroded areas, the surface layer is brown to pale -brown loamy sand. In the more eroded spots, the color ranges to strong brown and the texture ranges to sandy clay loam. The subsoil is 30 to 1-0 inches thick and is yellow to strong -brown, friable sandy clay loan that is mottled with yellowish red. Included with this soil in mapping were some severely eroded spots where the subsoil is exposed. These areas inaake up from 5 to 25 percent of the acreage in the mapping unit. Infiltration is fair, and surface runoff is rapid. The la.azard of further erosion is severe. This soil is difficult to keep in good filth, but it can be worked. throughout a fairly wide range of moisture content. A crust forms ora the severely eroded spots after hard rains, and clods forma if those areas are worked when vet. The crust. and the Clods interfere with germination. _1s a result, stands of crops are poor and replanting of the severely eroded areas may be necessary. An even stand of tobacco is bard to obtain. Plants in an uneven staancl mature at, different times. This increases the difftoulty of harvesting and cur- ing the crop, and if reduces thequalityr of the tobacco. About one-third of the acroage. is cultivated or in pars ture, and the, rest is in forest or in other uses. This soil is well suited to all the locally grown crops, especially tobacco and cotton. Intensive practices that effectively control runoff and erosion are necessary in the. cultivated areas. (Capability unit IIIe-4, -%voodl:and suitability group 5, wildlife suitability group 1) :non Series The Enon series consists of gently sloping to strongly sloping, deep, weI.l-drained soil,, on. Piedmont uplands. These soils occupy fairly small areas in the northern and Nvestern parts of the county, They are on rounded divides that have a difference in elevation of about 50 feet between the highest and the lowest points. The soils have formed under forest in niaterial that, weathered from mixed acidic and basic rocks. The water table generally remains below the solum, but there is a perched water table during wet, seasons because of the slow permeability of the subsoil. Nataaral fertility is naediuln, and the content of organic rnafter is low. Permeability is slow, the avaa,ila.ble water capacity is medium, and the sbrink-swell potential is high. Except in areas that have received lime, these soils are slightly acrid. Response is good if suitable alaplica- tions of line, and fertilizer are made. The Enon soils of this county are of only Trainor importance for fanning. About two-thirds of the acreage is it), forest. Representative profile, of an Enon fin(- sandy loam in a pasture 25 feet east of '_NTC.. Highway No. 50 and. 1 mile north of N.C. High -way No. 98: AT) --Cl to s inches, (jark-brown (7_51'T 4/4) fine. sandy 30a111; weak, fine an(i meclium, granular structure ; very fri- able when moist; aniany, fine, fabaons roots; ma,,)y fine pores; few dark -colored concaetioits ; slightly a eld. ; abrupt, Mary boundary. B21t---8 to 1_2 inches, strong-broicn (7.5YR 516) clay,- COM - mon, lane, disftinct, yellowish -brown mottles; moder- ate, medium and coarse. angular blocky structure; very firm when moist, sticky and plastic when wet; medium clay filuis ; common, fine, fibrous roots ; nanny fine pores; many, soft, black concretions: slightly acid; clear, wavy 'boundary°. B22t--12 to 26 inches, strong -brown (7.51M 5/6) clay a com- mon, medium, faint, dark -brown mottles an(! few, fine, prominent, black mottles; weak, coarse, pris- matic structure breaking to weak, medium, angulaar blocky structure; very firm when moist, sticky and plastic when wet; few, fine, fibrous roots; few Tyne pores; thick clay films; sllghtly acid; clear, smooth boundary. WAZE COUYrY, 1V'oltTH CAROLINA 1113t-20 to 32 incheaa„ Rtrong-brown ('7.55YR 15/6) clay; many, medium, prominent, 'red mottles and common, fine, diutinct, brownisli-yellow mottles; weak, coar.se,.ln;u- laar blocky striloture; firai when moist, sticky .111 pllstic when wet; few deeayYed roots in vertical cracks; thick e°)a#y 111ms on the vertient silrfalces of peels and tibial c hty films on the horizontal ,mrfac*s ; few fine pores; Tightly acid; abrupt, smooth bound- ary. C-32 to 38 inches -.I., mottled strong -brown (7.5YR 5/6), reddish-yellow (7.5YR 6/8), and red (2.5YR 5/8) clay loam; itira.teve ; firm when moist, slightly sticky and slightly plastic: when wet; few fine pores; com- 111on, soft, bhtek concretions; slightly a(Ad. The A. horiwn v mgtaa ;from i to 10 inches in thickness and from brown or dark brown to grayish brown or light „ray in color. The E2 horizons range from 10 to 34) inches in total thiclmexgs and front clay loam or silty clay loam to clay in texture, Their color Tanges from strong brown to reddish yellow, yellowish brown, or olive yellow in 7.5YR, 10YR, and 2.51 hue:4, and these horizons are mottled .with brown or red in many place). tat some areas the weak prismatic pri- mary fstrm.,-tore of the 13211 horizons breaks to moderate instead of weak, coarse and medium, angular blocky structure. The combined thielcnc,;ss of the d horizon and B horizons ranges from 20 to 40 inches. Depth to hard rock ranges from 4 to more than 10 feet. Enon soils occur with Helena and Vance soils. They are better drained than the }lelena soils and are moix, acid than either the Helena or Vance. soils, Enon tune sandy loam, 2 to 6 percent slopes (EnB).---- This soil is oil smooth in.terstruarrt divides in the uplands. The surface layer is 7 to 10 inches thick and is dark brown or grayish brown to light gray. The subsoil is 10 to 30 inches thick and. is reddish-yellow or yellowish - brown to olive -yellow, very firm clay loans or silty clay loaam to clay that is commonly mottled with brown or red. Included with this soil in mapping were some areas of soils that have al, surface layer of silt; loam. Also included were, sonxe areas in which the subsoil is more reddish than typical for this soil. Infiltration is good, but permeability is slow and sur- face runoff is medium. Thi hazard of erosion is moderate. This soil is easy to keep in good tilth, but tillage must be restricted after heavy rains. About two-thirds of the acreage, is in forest., and t1w rest is in pasture or is cultivated. This soil is well suited to many of the locally grown crops. Practices that effec- tively control runoff` and erosion a,re needed in the culti- vated aaxeaas. (Capability unit Ile --S, woodland saiitability group 11, wildlife suitability group 1) Enon tine sandy loam, 2 to 6 percent slopes, eroded (EnB2).—'This soil is on smooth interstre-gin divides in the, uplands. The surface layer is 4 to 7 inches thick and is brown to graayisla brown. In many places it is a mixture of the remaining original surface soil and of material from the subsoil. In the less eroded areas, the texture of the surface layer is fine sandy loam, but the texture nanges to sandy clay loam in the inore eroded spots. The; subsoil is 10 to 30 inches thick and is reddish-yellow- or ,yellowish -brown to olive -yellow, very firm clay loam or silty clay loam to clay that has common mottles of bro�vli or red. Included with this soil in mapping were areas of soils that have a surface layer of silt loam. Also included were some areas of soils that have a more reddish subsoil than 25 this soil. Other inclusions consist of some severely eroded spots where the subsoil is exposed. These severely eroded spots make up from 5 to 25 percent of the acreage in the mapping unit. Iaaiiltration is fa,ii-, but, permeability is slow gad stir faaop ruiioff is medium.. The hazard of further erosion is iaaoderate. This soil is diffioult to keep in good tilth. Because of the slowly permeable subsoil, however, tillage is restricted after heavy rains. A crust forms on the severely eroded spots after hard rains, and clods form if those areas are worked when wet. The crust and the clods interfere with germination. As a result, stands of crops are poor and rep1witing of the severely eroded areas is sometimes necessary. About two-thirds of the acreage is in forest, and the rest is in pasture or is cultivated. This soil is well suited to many of the locally grown crops, but practices that effectively control runoff and erosion are needed in the cultivatea areas. (Capability unit He -3, woodland suit- ability group 11, wildlife suitability group 1) Enon fine sandy loam, 6 to 10 percent slopes (EnC).--- This soil is on narrow side slopes in the uplands. It has a surfaco layer of dark -brown or grayish -brown to light - gray fine sandy loam 7 to 10 inches thick. The subsoil is 10 to 25 inches thick and is reddish-yellow or yellowish- browii to olive -yellow, very firm clay loam or silty clay lonin to clay that bas cominoai mottles of brown or red. Included in inapping were some soils that have a sur- face layer of silt loam., .Also included were some areas of soils that have a more reddish subsoil than this soil. Infiltration is good, but permeability is slow and sur. - face. runoff is ral)i( 'l, The. hazard of erosion is severe. This soil is easy to keel) in good tilth, girt, tillage, inust be, restricted after Heavy ra tris. About three-fourtlis of the acreage is in forest, and the rest is in pasture or is cultivated. This soil is well suited to many of the locally grown crops. Intensive practices tires that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit Me -3, woodland suitability group 11, wildlife, suitability group 1 )Enon fide sandy loam, 6 to 10 percent slopes, eroded (EriM.—This soil is on narrow siltslopes in the uplands. Its sairface layer is 4 to 7 inches thick and is brown to gji,ayish brown. In mangy* places it is a mixture of the remaining original surface soil and of material from the subsoil. In the: less eroded areas, the, texturee of the sur- face layer is fine sandy login. In the more eroded shots, the texture ranges to sandy clay loan). The subsoil is 10 to 25 inches thick and is reddish-vellow or yellowish - brown to olive -yellow, very firm clay loam or silty clay loam to clay that has common mottles of brown or red. Included with this soil in mapping were some areas of soils that have a surface layer of silt loam. Also included were some areas of soils that have a more reddish subsoil than this soil. Other inclusions consist of severely eroded. areas where the subsoil is exposed. These severely eroded spots make sip from 5 to 25 percent of the mapping unit. Infiltration is fair, but permeability is slow and sur- face runoff is rapid. The hazard of further erosion is severe. This soil is difficult to keep in good filth. Because of the slowly permeable subsoil, tillage is restricted after ME SOIL SURVEY heavy rains. A crust forms on the severely eroded spots after hard rains, and clods form if those areas are worked when wet. The crust and the clods interfere with germination. As a result, stands of crops are poor and replanting is sometimes necessary. About three-fourths of the acreage is hi forest, and the rest is in pasture or is cultivated. This soil is well suited to many of the locally grown crops. Intensive practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit IIIe--3, woodland suitability group 11, wildlife suliability group 1) Enon fine sandy loam, 10 to 15 percent slopes, eroded �EnD2).—This soil is on narrow side, slopes bordering drain- ageways in the uplands. In most, places it is moderately eroded, but some areas are only slightly eroded. In the moderately eroded areas, the surface layer is brown to grayish brown and ran es from fine sandy loam to sandy clan loam in texture. fln the slightly eroded areas, it is dark -brown or grayish -brown to light -gray fine sandy loam. The surface layer is 4 to 8 inches thick. The subsoil is 10 to 20 inches thick and consists of reddish-yellow or yellowish -brown to olive -yellow, very firm clay loam or silty clay loam to clay. It has common mottles of brown or red. Included with this soil in mapping were a few severely eroded spots where the subsoil is exposed. Also included were some areas of soils that have a redder subsoil than this soil. Infiltration is fair to good, but permeability is slov., and surface runoff is very rapid. The hazard of further erosion is very severe. Where this soil is slightly eroded, it is easy to keep in good tilth. Where it is moderately eroded, 'however, it is difficult to keep in good filth. Because of the slowly permeable subsoil, tillage is restricted after hard rains and clods form if those areas are worked when wet, The crust and the clods interfere with germination. As a result, stands of crops are poor and replanting is sometimes necessary. Ilost of the acreage is in forest, but a small acreage is in pasture or is cultivated. This soil is well suited to many of the locally grown crops. If it is cultivated, how- ever; very intensj.ve practices that effectively control run- off and erosion are needed.(Capability unit lVe-3, oodland suitability- - group 11, wildlife s�itability group w 11) The Faceville series consists of j.ently sloping to slop- ing, vert deep, well -drai md ells on Coastal Plain uplands in the southern part-, of the county and, on ter- races along the large. streams. These soils 'ii -re on broad smooth, rounded divides where the difference in elevatioli is about 20 feet bet-,veen the highest and the lowest points. They have formed under forest in Coastal Plain sediment and in alluvial deposits. The water table remains below the solum. Natural fertility and the content of organic matter are low, and permeability is moderate. The available water capacity is medium, and the shrink -swell potential is low. Except, in areas that have, received lime, these soils are strongly acid. Response is good if suitable applications of lime and fertilizer are made. The Faceville soils of Wake County are moderately important for farming, Most of the acreage is cultivated or in pasture, but some is in forest. Representative profile of a Faceville sandy loam in a cultivated field I mile south of Holly Springs and 25 yards east of N,C. Highway No. 55: Ap--O to 6 inches, brown (7.5YR 4/4) sandy loam ; moderate, medium and fine,. , granular structure; very friable when moist; many fine and medium, fibrous roots; many fine pores; few small pebbles; medium acid; abrupt, smooth boundary. A1-6 to 10 inches, strong -brown (7.6YR 5/6) sandy hyam; moderate, medium, granular structure; very f7lUb1€, when mobst; common, fine and medium, fibrous roots; many fine pores; inedium acid; clear, wavy boundary. A2-10 to 14 inches, reddish-yellow (5YR 6/6) sandy loara; moderate, medium, gTahular structure; very friable when moist; few, fine, fibrous roots; many fine= pores; few small pebbles; medium acid; abrupt, smooth boundary. B21t;-14 to 2.1 inches, strong -brown (7.5YR 5/0) clay loam; moderate, medium, subangular blocky structure; fri- able when moist, sticky and slightly p1ristic when wet; many fine pores: few thin clay films on the surfaces of pe.& and common thin clay films in root ch,amiels: strongly acid; clear, smooth boundary. B22t-21 to 38 inches, yellowish -red (5YR 5/8) heavy clay loam; few, medium, distinct, strmig-brown mottles; moderate, fine, and medium, gLIbanguhir blocky structure; frial)le when moist, sticky and slightly plastic when wet; few fine pores; few thin clay films; strongly acid; dlffiv�e., smooth boundary. B23t-38 to 51 inches, yellowish -red (5YR 5/8) clay loam; few, Coarse, distinct, strong -brown (7.5YR 5/8) Inot- ties; moderate, medium, subangular blocky structnre; friable when moist, sticky and 91ightly plastic when wet; few fine pores; few thin clay films ; common, small sesquioxide nodules; strongly acid.; clear, smooth boundary. 1333-51 to 65 inches, yellowish -red (5YR. 5/9) light sandy clay loam; common, coarse, distinct., red (2.5YR 4/8) mottles and common, coarse, distinct, strong -brown (7.5YR 5/8) mottles: moderate, inedium, angular blocky structure: friable when inoist, slightly stieky and slightly pkistic when wet; common fine, pores; few thin clay films in pores and around pebbles; few small pebbles; feu,,, small sesquioxide, nodules; strongly acid; clear, smooth boundary. C ­W5 to 72 inches +, mottled md (IOR 5/8), yellowish -red (5YR V6), and strong -brown (7.5YrR 5/8) sandy loam; massl�-e. : friable s4hen moist; few quartz pebbles; ,strongly acid. The A horizons range from. 4 to 20 inches in total thick- ness. Their color singes from gniyish brown or dark brown to light yellowish brown or reddish yellow in 10YR. , 7.5YR, and Tm 5YR hues. he B horizons range fro50 to 72 inches in total thickness, from strong brown to yellowish red or red in 7.!YR, 5YR, and 2.5Y"R hue -s, and from clay loani to sandy clay loam in texture. In many places the B horizons are mottled aaAth red, strong brown, or yellow. The combined. thiekness of the surface layer and subsoil is more thnn 630 inelies. Bedrock is at a depth of more thnn 20 feet. Faceville soils occur with Norfolk amid Orangeblirg soils. They are fuser textured than those soils and are wore red- dish than the Norfolk soils. Faceville sandy loam, 2 to 6 percent slopes (FoN,­ This soil is on broad, smooth interstream divides and on stream terraces. Its sarface layer is grayish -brown to dark -brown sandy loam that ranges from 8 to 20 inches in total thickness. The, subsoil is 50 to 72) inches thick and is red to yellowish -red, friable to firm clay loam. or sandy clay, with coinnion mottles of strong brown. WAKE COUNTY, NORTH CAROLINA Included with this soil in mapping were some areas of a soil that contains an incipient, discontinuous horizon, with plinthite. Also included were a few areas where the slope is less than 2 percent. Infiltration is good, and surface runoff is medium. The hazard of erosion is moderate. This soil is easy to keep in good tilth and can be worked throughout a wide range of moisture content. About three-fourths of the acreage is cultivated or in pasture, and the rest is in forest or in other uses. This soil is well suited to all the locally grown crops. The cultivated areas are used chiefly for row crops, especially tobacco and cotton. Practices that effectively control run- off and erosion are needed where this soil is cultivated. (Capability unit IIe-1, woodland suitability group 6, wildlife suitability group 1) Faceville sandy loam, 2 to 6 percent slopes, eroded (FaB2).—This soil is on broad, smooth interstream divides and on stream terraces. The surface layer is 4 to 8 inches thick. In many places it is a mixture of the remaining original surface soil and of material from the subsoil. In the less eroded areas, the surface layer is brown to light yellowish -brown sandy loam, but the color ranges to reddish brown and the texture ranges to sandy clay loam in the more eroded spots. The subsoil is 50 to 72 inches thick and consists of red to yellowish -red, friable to firm clay loam or sandy clay, with common mottles of strong brown. Included with this soil in mapping were some severely eroded spots where the subsoil is exposed. These areas make up from 5 to 25 percent of the acreage in the mapping unit. In many places this soil has an incipient and discontinuous horizon, with plinthite. Infiltration is fair, and surface runoff is medium. The hazard of further erosion is moderate. This soil is diffi- cult to keep in good tilth, but it can be worked through- out a fairly wide range of moisture content. A crust forms on the severely eroded spots after hard rains, and clods form if those areas are worked when wet. The crust and the clods interfere with germination. As a result, stands of crops are poor and replanting of the severely eroded areas may be necessary. An even stand of tobacco is hard to obtain. Plants in an uneven stand mature at different times. This makes harvesting and curing of the crop difficult and reduces the quality of the tobacco. About three-fourths of the acreage is cultivated or in pasture, and the rest is in forest or in other uses. This soil is well suited to all the locally grown crops. The cultivated areas are used chiefly for row crops, especially tobacco and cotton. Practices that effectively control run- off and erosion are needed in the cultivated areas. (Capa- bility unit IIe-1, woodland suitability group 6, wildlife suitability group 1) Faceville sandy loam, 6 to 10 percent slopes, eroded (FaC2).—This soil is on stream terraces and on narrow side slopes in the uplands. The surface layer is 4 to 8 inches thick. In many places it is a mixture of the remaining original surface soil and of material from the subsoil. Iii the less eroded areas, the surface layer is brown to light yellowish -brown sandy loam, but the color ranges to reddish brown and the texture ranges to sandy clay loam in the more eroded spots. The subsoil is 50 to 60 inches thick and consists of red to yellowish -red, friable to firm 27 clay loam or sandy clay, with common mottles of strong brown. Included with this soil in mapping were some severely eroded spots where the subsoil is exposed. These make up from 5 to 25 percent of the acreage in the mapping unit. In many places this soil contains an incipient and dis- continuous horizon, with plinthite. Infiltration is fair, and surface runoff is rapid. The hazard of further erosion is severe. This soil is difficult to keep in good tilth, but it can be worked throughout a fairly wide range of moisture content. A crust forms on the severely eroded spots after hard rains, and clods form if those areas are worked when wet. The crust and the clods interfere with germination. As a result, stands of crops are poor and replanting of those areas may be necessary. An even stand of tobacco is hard to obtain. Plants in an uneven stand mature at different times. This makes harvesting and curing of the crop difficult and reduces the quality of the tobacco. About two-thirds of the acreage is cultivated or in pasture, and the rest is in forest or in other uses. This soil is well suited to all the locally grown crops. The cultivated areas are used chiefly for row crops, especially tobacco and cotton. Practices that effectively control run- off and erosion are needed in the cultivated areas. (Capa- bility unit IIIe-1, woodland suitability group 6, wildlife suitability group 1) Georgeville Series The Georgeville series consists of gently sloping to strongly sloping, deep, well -drained soils on Piedmont uplands. These soils are on rounded divides where the difference in elevation is about 35 feet between the high- est and the lowest points. They are mostly in the western and southern parts of the county, where they have formed under forest. The material in which they formed has weathered from phyllite (Carolina slate). Natural fertility and the content of organic matter are low, and permeability is moderate. The available water capacity is medium, and the shrink -swell potential is mod- erate. Except in areas that have received lime, these soils are medium acid to strongly acid. Response is good if suitable applications of lime and fertilizer are made. The Georgeville soils of Wake County are fairly important for farming, but much of the acreage is in forest. Representative profile of a Georgeville silt loam in a pine forest near the Seaboard Coast Line Railroad, 11/4 miles soutbwest of the town of Cary and two-thirds of a mile north of U.S. Highway No. 1: Ap-0 to 5 inches, yellowish -brown (10YR 5/4) ,silt loam; weak, medium and coarse, granular structure; very friable when moist; many fine, fibrous and woody roots; medium acid; abrupt, smooth boundary. 131-5 to 9 inches, yellowish -red (5YR 5/8) silty clay loam; moderate, medium and fine, subangular blocky struc- ture; friable when moist, sticky and slightly plastic when wet; few, fine, woody roots; medium acid; abrupt, smooth boundary. B21-9 to 30 inches, red (2.5YR 4/8) clay; strong, medium and fine, subangular blocky structure; firm when moist, sticky and plastic when wet; few, fine, woody roots; medium clay films: medium acid; clear, smooth boundary. 28 S®IL SURVEY B22--30 to 40 inches, red (2.54.8 4/8) eBay; few, 'fine, prom- inent, brownish -yellow mottles; strong, indium and fine, subangular blocky structure; firm when moist, sticky and plastic when wet; few, fine, woody roots; medhim clay films; few fine mica flakes in lower part of horizon; this laser is somewhat more friable anti contains less clay than the B21 horizon; strongly acid; dear, wavy boundary. 1331-40 to 49 inches, red (2.5YU 4/6) silty clay; coamnon, coa.rs,P, distinct, dark reddish -brown (2.5YR 3/4) mottles and a few, coarse, prominent, brownish - yellow (10YR 6/8) mottles that contain less clay than the soil material in the matrix; moderate, anedium and fine, subangular blocky structure,,; fri- able when moist, sticky ;and plastic when wet; medium char- films; few fine mica flakes; strongly acid; clear, wavy boundary. 1332-49 to 55 inches, red (2.5YR 4/6) silty clay loans; many, fine, distinct, weak -red to dusky -red (purplish cast) anottles and Common, coarse, prominent, brownish - yellow (IOYR 6/8) mottles; moderate, medium, subangular blocky structure; friable when moist, sticky and plastic when wet; few thin clay films; few flee mica flakes than increase in number with depth; pockets of saprolit.e associated with the mot- tles; Arongly acid; clear, wavy boundary. C-55 to 92 inches +, mottled yellow and red (purplish cast) silt loam that is. disintegrated pbyllite; massive; some accumulation of clay in vertical cracks; strongly acid. The Ap horizon ranges from 3 to 8 inches in thickness and from dark grayish brown or grayish brown to yellowish brown in color. The B horizons range from. 30 inches to 55 inches in total thickness and from silty clay loam to clay in texture. The color of the 132 horizons is reel in 2.5YR hue. The combined tticlzmess of the A. and B horizons is 33 to 60 inches. I)epth to hard rock ranges from 5 to more than 15 feet. The Georgeville soils occur with Cecil, Lloyd, and Herndon soils. They contain more silt and less sand than the Cecil soils, and they contain more silt and are not so dart: a red as the Floyd soils. They are redder than the Herndon soils. Georgeville silt loam, 2 to 6 percent slopes (GeB),--- This soil is on smooth interstream divides in the uplands. Its surface layer is dark grayish -brown to yellowish - brown silt loam 4 to 3 inches thick. The subsoil is red, firm silty clary loam to clay 30 to 55 inches tliick In many places from 20 to 50 percent of the surface is covered with pebbles and cobblestones, and from 20 to 50 perr_ent of the surface l -aver coalsilts of pebbles and cobblestones, Infiltration is good, and surface runoff is medium. The hazard of erosion is moderate. This soil is fairly easy to ,reels in good tilth a.nd can be worked, throughout• a fairly wide range of moisture content. This soil is saited to most of the locally grown crops., but about three-fourths of the acreage is in forest, The areas that have been cleared are used chiefly for row crops and pasture. Pra'ct'ices that effectively control run- off:' and erosion are needed in the cultivated areas. (Capa- bility unit Ile -2, woodland suitability group 5, wildlife suitability group 1) Georgeville silt loam, 2 to 6 percent slopes, eroded (GeB2).—This soil is on smooth interstream divides in the, uplands. Its surface layer is 3 to 6 inches thick. In many places it is a mixture of the remaining original surface soil, and of material from the subsoil. In the less eroded spots, the surface layer is grayish -brown and yellowish - brown silt loam, but the color ranges to reddish brown and the texture ranges to silty clay loans in the more eroded spots. The subsoil is red, firm silty clay loam to clay and is 30 to 55 inches thick. Included with this soil in mapping were souse are€zs where from 20 to 50 percent of the surface is covered with pebbles zuid cobblestones and from 20 to 50 percent- of the, surface layer consists of pebbles and cobblestones. Mso included were some severely eroded spot.^ where. the sub- soil is exposed. The severely eroded areas ninke up from, 5 to 25 percent of the acreage in the ,mapping unit. Infiltration is fair, and surface runoff is medium. The hazard of further erosion is moderate. This soil is diffi- cult to keep in good filth and can be worked only within a rather narrow range of moisture content wilhout puddling. A crust forms on the severely eroded spots after bard rains, and clods form if those areas €ire worked when wet, The crust and the clods interfere with germination. As a result, stands of crops are poor and replanting of the severely eroded spots may be necessary. About three-fourths of the acreage is in forest. This soil is waited to most of the Locally grown crops, however, and the areas that are cleared are used chiefly for row crops and pasture. Practices that effectively control run- off and erosion ire needed in the cultivated areas. (Capa- bility unit IIe--2, woodland suitability group 5, wildlife suitability group 1) Georgeville silt loam, 6 to 10 percent slopes (GeQ.__....- This soil is on short to long side slopes in the aapla•nds. Its surface layer is 4 to 6 inches thick and consists of dark grayish -brown to yellowish -brown silt loans. The subsoil is red, firm silty clay loam to clay that is 30 to '15 inches thick. Included with this soil in inatpping were many areas where from 20 to 50 percent of the surface is covered with pebbles and cobblest.o nes and frons 20 t050 perceaat of rile surface layer consists of pebbles and cobblestones. Infiltration is rood, and surface runoff is rapid. The hazard of erosion is severe. This soil is fairly easy to keep in good tiltla and can be worked throughout a fa�,irly wide range of moisture, content. Though most of the acreage is in forest, this soil is suited to most of the locally grown crops. A. smallaa,cre- age that has been cleared is used. chiefly for row crops and paasture. Intensive practices that, effectively control rarmff and erosion are needed in the cultiv ate -d axeaa,s. g'Capaability> unit IIIc --2, woodland suitability group 5, wildlife suitability group 1) Georgeville silt loans, 6 to 10 percent slopes, eroded (G(-,C2).—This soil is on short to long side slopes in the uplands. In many places its surface- laver is a mixture of the. remaining original surface soil "and of material from the subsoil. It is 3 to 6 inches thick. In the less eroded areas, the surface layer is aa. mixture of the re- xrlainine original surface soil and of material from, the subsoil. In those areas it is grayish -brown to yellowish - brown silt, loam; but the color ranges to recldisli brown. ,and the texture ranges to silty clay loam in the more eroded areas. The subsoil is red, firm silty clay loam to clay and is 30 to 45 inebes thiels. Included with this soil in snapping were ar_aany a'rea's where from 20 to 50 percent of the surface is covered with pobbles and cobblestones and from 20 to 50 percent of the surface layer consists of pebbles and. cobblestones. Also. included were some severely eroded spots where the sub- WAKE COUNTY, NORTH CAROLINA soil is exposed. These severely eroded itreas lxlake up from 5 to 25 percent, of the acreage. in the mapping unit. Infiltration is flair, and surface runoff is rapid. The hazard of further erosion is severe. This soil is difficult to beep in good filth arad can be worked only within a fatilly li.a.rrow range eaC irxoisture content without puff dlrl �4 crust for-riis sail the severely eroded spots after laa,rd rains, sand clods [orae if those areas care worked �s leii wet. Tlie eiust asci the clods interfere with germi- nation. As a result, stands of crops are poor and replant- ing of those areas may be necessary.l�Zost of the acreage is in forest, but this soil is suited to many of the locally grown crops. The cleared areas are used chiefly for row crops and pasture. Intensive practices that effectively control runoff and erosion are needed in the cultivate;l areas. (Capability emit IIIe--2, woodland suitability gxonp 5, wildlife suitability group 1) Georgeville silt loam, 10 to 15 percent slopes,, eroded (GeD2).---This soil is cm narrow side slopes bordering "Mind draina,geways. It is dominantly tnoderaately eroded, but it is only slightly eroded in places. The sur- face layer is 3 to 6 inches thick. In the moderately eroded areas, the surface layer is generally grayish -brown to yellowish -brown silt loam, but the color ranges to red- dish brown and the texture ranges to silty clay loam. In the slightly eroded areas, the surface layer is dark �rayisla-brown to yellowish -brown silt loam. The subsoil is red, firm silty clay loam to clay that is 30 to 36 inches thick. Included with this soil in mapping were areas where from 20 to 50 percent of the surface is covered with pebbles and and cobblestones, €acid from 20 to 50 percent of the surface layer consists of pebbles and cobblestones. Also included zz•ere some severely- eroded spots where the sub- soil is exposed. Infiltration is fair to good, and surface runoff is very rapid. The hazaard of further ,erosion is very severe. Where this soil is only slightly eroded, it is easy to beep in good tilth. Wliere it is moderately eroded, it is difficult to beep in good tilth and can be, worked within only a narrow range of moisture content without pud- dling. A. crust forms on the severely eroded spats after hard rains, and clods form if those areas are worked when wet. The crust and the clods interfere with germin- ation. As a result, stands of crops are poor and replant- ing of those areas may be necessary. Much of the acreage is in forest., but this soil is suited to most of the locally grown crops. Where it hasbeen cleared, it is used chiefly- for row crops and pasture. Very intensive practices that effectively, control runof and erosion are needed in the cultivatid areas. (Capa- bilit.v unit IVe-2, woodland suitability group 5, wildlife suitability group 1) Goldsboro Series The Goldsboro series consists of nearly level and gently sloping, very deep, moderately well drained soils on Coastal Plain uplands in the southern part, of the county. These soils are chiefly on broad flats or in slight depres- sions where the difference in elevation is about 5 feet ®' between the highest and the lowest points. They have formed under forest in Coastal Plain deposits. A season- ally high water table is at a depth of about 21/2 feet. Natural fertility and the content of organic insatter are low, permeability is moderate, and the available water capacity is i-nediuin. The shrink -swell potential is low. + xcept hi areas that have received lune, these soils are stroiigly acid, Response is good if suitable applica- tions of lime and fertilizer are trade. The Goldsboro soils of Wake County are not impor- tant for farming. Nevertheless, most, of the acreage is cultivated or in pasture. Representative profile of Goldsboro sandy loam in as cultivated field 1.1 miles south of the New Hope Church, 0.4 of a mile west on a farm road, and 30 yards south of the farm road: Ap-0 to 10 inches, dark grayish -brown (2.5Y 4112) sanely loam; weak, medium, granular structure; eery fri- able when moist; common, fine, fibrous roots: many fine pores; slightly acid; abrupt, wavy boundary. 112--10 to 15 inches, pale -yellow (2.5Y 7/4) sandy loam; weak, medium, granular structure; very friable when moist; few, fine, fibrous roots; many fine par"; slightly acid; clear, wavy boundary. B21t--15 to 18 inches, yellowish -brown JOYR 5/65 sandy clay loam ; few, medium, distinct, strong -brown mot- tles, weak, medium and fine, subangular blocky structure; friable when moist, slightly sticky and slightly plastic when wet; few, 8ne, fibrous roots; thin, clay films on sand grains; many fine pores; strongly acid; abrupt, smooth boundary. 1322t---18 to 26 inches, yellowish -brown (10YR 5/4) .sandy clay loam; maany, medium, prominent, strong -brown mottles; moderate, medium and fine, subangular blocky structure; friable when moist, slightly sticky and slightly plastic when vet; medium clay films; common fine pores; strongly acid; clear, smooth boundary. B23t-26 to 30 inches, yellowish -brown (10YR 5/6) sanely clay loam; many, medium, prominent, light brownish - gray mottles; moderate, medium and fine., -subangu- lar blocky structure; slightly brittle in place; friable when moist, slightly sticky acrd slightly plastic when wet; few thin clay films; strongly acid; clear, smooth boundary. 133t--30 to 61. inches, mottled yellowish --brown (10YR 5/6), light brownish -gray (10YR 6/2) to gray (10YR 6/1), and red (2.5YR 4/8) sandy clay loam; moderate, medium and fine, iubaugmlar blocky structure; slightly brittle in place; friable when moist, slightly sticky and slightly plastic when wet; few thin clay films; common fine pores; strongly acid; clear, smooth boundary. C 61 to 72 inches +, mottled red (lOR 4/6), gray (lti 6/0), and yellowish -brawn (10YR 5/6) handy loam; inas- sive ; brittle in place; friable when moist, slightly sticky and slightly plastic when wet; strongly acid. The A horizans range from (i to 20 inches in total thick- ness .and from light gray to very darlt grayish brown in color. The B horizons range from 46 to 60 inches in combined thickness and from sandy loam to sandy clay loam in tex- ture. The color of the 13 horizons is pale brown to yellowish brown of 1OYR lane. Gray mottles are at a depth of 10 to 20 inches below the top of the B21t; horizon. The combined thickness of the 4 and B horizons is more than 60 inches. Depth to hard rock is more than 20 feet. Goldsboro soils occur with Norfolk and Lynchburg soils. They are not so well drained as the Norfolk soils and are better drained than the Lynchburg soils. Goldsboro sandy loam (0 to 4 percent slopes) (Go). ---- This is the only Goldsboro soil mapped in Wake County. RE SOIL SURVEY :It :Ila-, a surface layer of light -gray to very dark g ay- ish-brown sandy loam 6 to 20 inches thick. The subsoil is 46 to 60 inches thick and is pale -brown to yellowish - brown, friable sandy loam to sandy clay loam that is mottled with gray in. the lower part. In many places this soil contain,-, an ille ipi.east and discontinuous horizon, with plinthite. Included 1n mapping were some areas of aa, soil that, has a finer text aired subsoil than is typical for this soil. Infiltration is good, and surface runoff is slow. This soil is easy to keep in good. tilth and can be worked throughout a wide roa,nge of moisture content. It is used chiefly for roan crops, especially tobacco, but it, is well suited to all the locally gown crops. in places some drain- age is necessary for crops that require good drainage. (Capability uiut Hiv-1, woodland suitability group 4, Nvildlife sulta.bility group 1) C The Granville series consists of gently sloping to strongly sloping, deep, well -drained soils on Piedmont uplands in the western part of the county. These soils are on rounded divides that have a difference in elevation of about 20 feet between the highest and the lowest points. They have formed under forest in material that wea- thered from sandstone, shale, and mudstone of Triassic age. The water table remains below the solum. Natural fertility and the content, of organic matter are low, permeability is moderate, and the available water capacity is medium. The shrink -swell potential is moderate to low. These soils have a high content of alu- minusn. Except in areas that have received Bane, they are strongly acid. Response is good if suitable applications of lime and fertilizer are made. The. Granville soils of this county are moderately im- portant for farming, Most, of the acreage is cultivated or in pasture. Representative profile of aa, Granville sandy loam in a cultivated field one-fourth of a mile west of the Salem Church and 600 feet west of road A11-0 to U inches, brown (10YR 5/3) sande loam; weak, medium and coarse, granular structure; very friable when moist ; ninny fine, fibrous roots; common small pebbles; inediuni acid; abrupt, smooth boundary. A2-6 to 12 inches, very pale brown (10YR 7/4) windy loam; weak, medium and eonrse, granular structure; very friable when moist; common., fine, fibrous rooks; few small pebbles; medium acid; clear, wavy bound- ary. BI -12 to 15 inches, brownish -yellow (10YR 6/6) sandy clay loam; weak, medium, subangular blocky structure; friable when moist, slightly sticky and slightly plas- tic when wet; few, fine, fibrous roots; medimn acid; clear, smooth boundary. 1321t-15 to 20 inches, yellowish -drown (10YR 5/8) clay loam; moderate, medium and fine, subangular blocky structure; friable when moist, slightly sticky and slightly plastic; when %vet; few- thin clay films; strongly acid; clear, smooth boundary. B22t-20 to 31 inches, yellow!sh-brown (10YR 5/8) clay loam; few, coarse, prominent, yellowish -red (5YR 5/8) mottles; moderate, medium and fine, subangular blocky structure; friable when moist, slightly sticky and slightly plastic when vet; feu- thin clay films; strongly acid; clear, smooth boundary. 113t.---31 to 41 inches; brownish -yellow (10YR (a/b) Clay loam; many, co Arse, proralnent, red (25S'R 1/5) mottles and common, coarse, distinct, very pale brown (10YR 7/3) anottles ; moderate, fine, subangular blocky structure; friable when moist, slightly sticky and slightl_y plastic when wet; common thin clay Alms; common small pebbles; red mottles apponx to be weatli red parent material ; strongly wld ; gradual, smooth boundary. 0---41 to 50 inches +, layered red, light -gray, and strong - brown clay; thick platy primary structure breaking to strong, medium, angular and subangular blocky structure; firm when moist, sticky and plastic when wet; thick ,silt coatings; common rounded pebbles as large as 3 inches in diameter; red material is hard and brittle.; strongly acid. The A horizons range from 6 to 20 inches in total thickwws and frown brown or dark brown to Dale yellow in color. The Bt horizons range from 26 inches to 54 inches in combined thickness, from clay loaan to sandy clay loam in texture, and from yellow to strong brown in color. From 5 to 10 Wreent of the profile generally consists of rounded and angular peb- bles. Granville soils occur with Daarham, Mayodan, and Creed - moor soils. They contain more exchangeable aluminum than the Durham roils. have it less reddish subsoil than the Afayodan soils, and have as coarser textured, less farm kind less plastic lower subsoil than the Clreedmoor soils. Grnn- ville soils are better drained than the Oreedmoor soils. Granville sandy loam, 2 to 6 percent slopes (GrB):-- This soil is on broad, smooth interstre.am divides in the uplands. It has "IL dark -brown or brown t}o 1'xale-yellow sur- face layer that, is 7 to 20 inches thick. The subsoil is 26 to 50 inches thick and consists of yellow to strong - brown, friable clay loam or sandy clay loam, with coin - anon mottles of yellowesli red. Included with this soil in mapping were a few areas where the slope is less than 2 percent. Iso included were areas where front 20 to 1-W percent, of the surface is cov- creel with gravel and from. 20 to 50 percent of the sur- face layer ss gravel. Infiltration is good, and surface runoff is medium. The hazard of erosion is moderate. This soil is easy to keep in good tilth and can be worked throughout a wide range of moisture content. This soil is smell suited to most of the locally brown crops, and nnost of the acreage is cultivated or in pns- ture. Row crops, especially tobacco and cotton, are the main crops grown. Practices that effectively control run- off and erosion are needed in the cultivated areas. (Capa- bility unit 7Ie-4, Nvoodland suitability group s, wildlife suitability, group 1) Granville sandy loam, 2 to 6 percent slopes, eroded (GrB2): This soil is oil broad, smooth inter atreaarn divides in the uplands. Its surface layer is 6 to 8 isiches thick. In many places it is a mixture of the remaining original sur- face soil and of material from the subsoil. In the less eroded areas, the surface Iayer is brown to pale -yellow sandy loam, but the color ranges to strong brows and the texture ranges, to sandy clay loam in the. more. eroded spots. The subsoil is 26 to 50 inches thick and is yellow to strong -brown, friable c.la'y loans or sandy clay loam that has coninion snottl.es of yellowish red. Included with this soil in snapping were some areas where from 20 to 50 percent of the surface. is covered with ,;ravel and from 20 to 50 percent of the surface layer is gravel. Also included -were some severely eroded WAKE COUNTY, NORTH CAROLINA spots that make up from 5 to 25 percent of the acreage in the mapping unit. Infiltration is fair, and surface runoff is medium. The hazard of further erosion is moderate. This soil is difti- cult to keep in good tilth, but it can be worked through- out a fairly wide range of moisture content. A crust forms on the severely eroded spots after hard rains, and clods form if those areas are worked when wet. The crust and the clods interfere with germination. As a result, stands of crops are poor and replanting of those areas is sometimes necessary. An even stand of tobacco is hard to obtain. Plants in an uneven stand mature at different times. This snakes harvesting and curing of the crop diffi- cult and reduces the quality of the tobacco. This soil is well suited to most of the locally grown crops, and most of the acreage is cultivated or in pasture. The cultivated areas are used chiefly for row crops, espe- cially tobacco and cotton. Practices that effectively con- trol runoff and erosion are needed in the cultivated areas. (Capability unit IIe-1, woodland suitability group 5, wildlife suitability group 1) 31 Granville sandy loam, 6 to 10 percent slopes (GrQ.— This soil is on narrow side slopes in the uplands. It has a dark -brown or brown to pale -yellow surface layer that ranges from 7 to 15 inches in total thickness. The subsoil is 26 to 45 inches thick and consists of yellow to strong - brown, friable clay loam or sandy clay loam, with com- mon mottles of yellowish red. Included with this soil in mapping were some areas where from 20 to 50 percent of the surface is covered with gravel and from 20 to 50 per- cent of the surface layer consists of gravel. Infiltration is good, and surface runoff is rapid. The hazard of erosion is severe. This soil is easy to keep in good tilth and can be worked throughout a wide range of moisture content. About two-thirds of the acreage is cultivated or in pas- ture, and the rest is in forest or in other uses. This soil is well suited to most of the locally grown crops. The cultivated areas are used chiefly for row crops, especially tobacco and cotton. Intensive practices that effectively control runoff and erosion are needed in the cultivated areas (fig. 5). (Capability unit IIIe-1, woodland suit- ability group 5, wildlife suitability group 1) Figure 5.-5triperopping in a field of Granville sandy loam, 6 to 10 percent slopes. Water from the ponds is used for irri-ation. 32 SOIL SURVEY Granville sandy loam, 6 to 10 percent slopes, eroded (GrC2 .- -This soil is on narrow side slopes in the uplands. Its surface layer is f to 8 inches thief. In many Places the surface layer is a mixture of the remaiinlug original surface soil and of nla,terial from the subsoil. in the les eroded areas, the surface layer is brown to pale -yellow sandy loam, but the color ranges to strong brown and. the texture ranges to sandy clay loam in the more eroded spots. The subsoil is 26 to 45 inches thick and consists of fellow to strong -brown, friable clay loam or sandy clay oaaila, with common mottles of yellowish sed. Included with this soil in snapping were some areas where from. 20 to 50 percent of the surface is covered with gravel and where from 20 to 50 percent of the sur- faace layer consists of gravel. Also included were some severely eroded spots that make up from 5 to 25 percent of the acreage in the mapping unit, Infiltration is fair, and surface runoff' is rapid. The hazaard. of further erosion is severe. This soil is difficult to keep in good tilth, but it can be worked throughout., aa fairly wide mange of moisture c=ontent. A. crust forams on the severely eroded spots after hard rains, and clods form if those areas are worked when wet.. The crust and the clods interfere with germination. As a result, stands of crops acre poor and replanting of those areas may be necegsan,. An even stand of, tobacco is hard to obl,aain. Plants in an uneven stand mature at different times, which makes harvesting and curing of the crop difficult and reduces the quality of the tobacco. About two-thirds of the acreage is cultivated or in pasture, and the rest is in forest or in other arses. This soil is well suited to most of the locally grown. crops. Row crops, especially tobacco and cotton, are grown. in the cultivated. areas, a.tnd other crops are grown to a lesser extent. Practices that effectively control runoff and ero- sion are needed in the cultivated areas. (Caability unit Me --I, woodland suitability group 5, wildli e suitability group 1) Granville sandy loam, 10 to 15 percent .gl€apes (GrD). -_- This soil is in the uplands. It has a dark -brown or brown to pale -yellow surface layer s to 12 inches thick. The sub- soil is 20 to 40 inches thick and is yellow to strong -brown, friable clay loam or sandy clay loam that has coniM011 Mottles of yellowish red. Included with this soil in mapping were. some areas where from 20 Lo 50 percent of the surface is covered with gravel and from 20 to 50 percent of the surface. la nr consists of gravel. Also included were. some severely eroded spots where the subsoil is exposed. Tnfiltraation is good, and surface runoff is very rapid. The hazard of erosion. is very severe. This soil is easy to .keep in good til.th, and it can be worked throughout a wide range of inoisture content. About haalf of the acreage, is cultivated or in pasture, and the rest is in. forest. This soil is well suited to most of the locally grown crops, and the Cldtivaat.®d areas are used chiefly for row crops. eery intensive practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit IVeA, woodland suit- ability group 5, wildlife suitability group 1) Gullied land (Gu) is a ruiscella,neous land type consisting of areas that have eroded beyond feasible reclamation. Erosion has removed practically all of the original sur- face layer and, in places, much of the subsoil from the original soils. Mora than one-fourth of the acreage con- sists of g-aallies. Tillage equipment can be operated across some of the gullies but will not obliterate then. In. some areas the gullies are too deep and too numerous to be smoothed, even if heavy equipment is used. Some gullies have cut into the weathered rock that underlies the area. The uppermost part of the soil material is clay. The rate of infiltration is slog. Most of the water from rainfall rujis_off the, surface veil, rapidly.This land type can be used .for growing pines. but growth of the trees will be slow. (Capahality rant. Vile, -1, woodland suitability group 1.3, wildlife suitability group Helena Series The Helena series consists of gently sloping to strongly sloping, deep, moderately -well drained soils thaat, occupy small a.resa,s on Piedmont uplands. These soils are in tha northern part of the county and are on side slopes and on rounded divides that have a difference in elevation of about 30 feet between the highest and the lowest points. They have formed under forest in rnaaterial that weath- ered from mixed acidic. and. basic, rocks. The water table remains below the solum most of the time. wring wet seasons, however, these soils contain a perched water table as as result of their slowly perrneaa,ble subsoil. Natural fertility and the content of organic matter are low, and. permeability is sloe-. The available water capacity is medium, and the shrink -swell potential is high. Except in areas that, have re.ceivecl, lune, these soils are strongly acid or very strongly acrid. Ti,esponse is good. if suitable applications of lime and fertilizer are made. The Melena soils of Wake County are not important. for farming. 11ost of the acreage is in forest or pasture. Representative profile of as Helena, sandy loaam in a cultivated field 150 feet north of a paved road and 2.2 miles east of the Wake Finishing Plant a A.p—ti to 8 inches, grayish -brown (2.5Y 5/2) sandy loans, weal;, fine. and inedium, granular otructure.; very friable when moist; amity fhie, fibrous roots ; anedium acid; abrupt, smooth boundary. B1---8 to 10 inrlaes, loatle-broirra (2,5Y e/4) light sandy clay laam; common, medium, prominent, brownish -yellow mottles ; weak, medium, sul),angulatr blocky struc- ture; friable when moist, sticky aa.nd slightly plsasti(,- when wet; few, lane, fibrous roots; medium aaelad g abrupt, smooth. boundary. B21t-10 to 22 inches, browniasla-yellow (10YR 6/6) sandy clay; many, coa_ ;e, prominent, light yellowish -brown (10YR 0/4) mottles; weak, medium, angular blocky structure; very firm when moist, sticky and very plastic when wet; distinct clay films on ped sur- faces; strongly acid; gradual, smooth boundary. B22t 22 to 27 inches, brownisli-yellow (10YR 6/11) clay coannaon, coarse, prominent, g;rny (10Y:i3. ;/i) Mot- tles; weak, medium, angular blocky structure; very firm when moist, sticky and very plastic when wet; train clay films; very strongly acid; gradual, smooth boundary. B23t-27 to 82 inches, light -gray (2.5y 7/2) sandy clay to clay; many, coarse, protniaent, brownish -yellow (10YR 6/0) mottles; weak, medium and coarse, angular blocky structure; very farm when moist, sticky and eery plastic when reset; thin clay- films; vera- strongly acid, gradual, smooth boundary. WADI COUNTY, 14ORTk1. CAROLINA Bat- 31? to 36 inches, dray (10YR 6/I) maty clay; fear, coarse_, prominOnt, brownish -yellow (10Y$t 6/6) mot- tles; weans, coarse, angular blocky structure tap- pro,aching niaat3slye; firni when in.olst, stinky and plas- tic Svhen wet;Aass thin clay illms; strongly acid; clear, smooth boaand ary. C --iii to 39 inches +, to attled light -bray and bzownish yellow sandy clay Waut .that is dhAntegra.tod, acid crgs2.a1- line rock. The A horizon ranges frons. 3 to .15 in hers in thickness and Froin graayisii bro-wn, (Vtrk grayish broayn< or light brownish gray to pale yellow in color. In places the fit horizon is absent. Where it occur,, it range:? from 2 to 10 inches in flaielsness and front pqtndy clay loans to sandy* clay in tex- ture. The inod l color of the 'Iit horizons is yellowish brown, but the color ranges fro,in brownish yellow, yellow, or olive to <4rong brown or Ught gray. Gray inottling oectirs below the uppermost 10 inches of the B21't horizon. The 7 2t horl- zona range frons 10 inches to 30 ioebes in cornbined thick- ness and from clay to sandy clay in texture. The combined thickness of the A horizon and B horizons ranges, frons 20 to 60 .inches. Depth to heard rock manges from 4 to 15 feet. Or snore. Helens soils occur with Durham, Appling, "ivedoweo, Vance, Eno., Wilkes, Colfax, and Creedinoor soils. They Ire menti well drained than tho Durham, Ahpling, Wedowee, Vance, Enon, and Wllkerw soils, [arid they have a finer textured Bob - soil than the Durh.aani, Colfax, eancl Wedowee sails. Melena soils are lass brown and are niore, acid than the ]+icon soils. They have a thicker vurfaee layer and subuiil than the Wilkes soils, are better draai.ncd than the Colfax soils, ?lid eonta.ln less exchangeable :altauainuni than the Creednioor soils. Helenas sandy loam, 2 to 6 percent slopes (HeB).—this soil is on smooth interstroam divides. It has a dark gray- ish -brown to light brownisli-bray surface laver 7 to 15 inches thick. The subsoil is 10 to 30 inches thick' It .consists of yellow to strong -brown sandy clay or clay that is very firi'n when moist and very plastic; whema vet. The subsoil contains common gray mottles. Infiltration is Yood, but Permeability is slow and sur- face runoff is rnea ii an. The hazard of erosion is moderate. This soil is eazsv to keep im. good tilth. Because of the slowly permeable subsoil, however, tillage is restricted after heavy raims. About half of the acreage is cultivated or in pasture, and the rest is in forest,. This sail is fairly well suited to most of the locally grown crops. where it has been Cleared, it i� nsecl clzie8=ly .for row drops. Practices that effectively control runoff aand erosion axe needed in the cultivated. areas. (Capability unit Ile -3, woodland suit- ability gyp° oup 11, wildlife saaitability group 1) Helena, sandy loam, 2 to 6 percent slopes, eroded (HeB2). -This soil is on smooth iraterstreamri. divides. Its surface layer is 3 to 7 inches thick. In nviriy places it is �a in%xture of the reinaining original surface soil and of material from the, subsoil. In the less eroded areas, the Surface layer is pale .yellow or light brownish gray sandy loam, but, the, color ranges to strong brown and the tex- :ure rang: s to clay loam in the more eroded. spots. Tile subsoil is 10 to 30 inches thick. It consists of yellow, -o strong -brown sandy clay or clw% that has common ,Yray inottle.s and is very firm when moist aid very Mastic when wet. Included with this soil .in inaapping were some severely ,roded spots where the subsoil is exposed. These spots hake up from. 5 to 25 percent of the acreage in the napping unit. 33 Infiltration is fair, but, permeability is sloe= and run- off is mediums. The hazard of further erosion is severe. This soil is difficult to keep in -good tilth. Because of the slowly permeable subsoil, tillage is restricted after heavy raains.A crust forms oil the severely eroded sprats after hard. rains, and clods fours if those areas are worked when vet. The crust and, the olods interfere with germination. As a result, stand's of crops are poor and replanting of the severely eroded spots is sometimes nec- essa,I°yr. An even st-and of tobacco is hard to obtain. Plants in anuneven stand mature at different times. This makes llarvest7ingr and curing of the crop difficult and reduces the quality of tile, tobacco. About half of the acreage is cultivated or in pasture, and the rest; is in forest. This soil is fairly well suited, to most of tha locally grown crops. where it, has been cleared, it is used chieflty� for row crops. Intensivo prac- tices that effectively control runoff and erosion rare needed in the cultivated ?areas. (Capability unit IIIe­-3, wood - ].,and suitability group 11, wildlife suitability group 1) Helenas sa nay loam, 6 to 10 percent dopes (HeQ.— This soil is on narrow side slopes in the uplands. Its sur- face l a,yer° is dark grapyisll-brown to light brownish-graysandy loans 7 to 14 inches thick. The subsoil is 10 to 26 inches tbidc aucl consists, of yellow to wt.ron� -brown sandy clay loaamn to clay=, with cominion mottles of gnay. It is very frail when moist and very plastic when wet:. Infiltration is good, but, permeability is slow and sur- face, runoff is rapid. The hsamrd of °further erosion is severe. This soil is easy to keep in good tilth, but tillage is restricted after heavy rains becaz,use of the slowly per- ineable subsoil. About one-fourth of the acreage is cultivated or in P, sture, and the rest is in forest. this soil is fairly well suited to most of tile. locally grown crops. $here it has been cleared, it i5 used chiefly for row crops 11itensive practices thaa,t, ed`ectively control runoff and erosion are needed in the cultivated areas. (Capability unit IIIc --3, woodland suitability group 1.1, wildlife suitability group 1) Helena sandy loan?, 6 to 10 percent slopes, eroded (HeC2).--Thi, soil is on n acro -w side slopes in the uplands. Its surface layer is 3 to 7 inches t.hicl� In m miy places it is as mixture, of the reina,ining or gimal surface soil acrd of material froirt the subsoil. In tine l-e&s eroded areas,the star - face hover is pale -yellow to light brownish , r y sandy loam, but the color ranges to strong brown and tllc texture ranges to clay loam in the more eroded spots. hi(,I uled with this soil. iii mapping were solve severely eroded spots where the subsoil is exposed. These arenas make, alp from. 5 to 25 percent of the acreage in the mapping unit,. Inliltnition is fair, but perrneability is sloe- and runoff is rapid, The hazard of further erosion is, very severe. This soil is difficult to keep in good tilth. Tillage is restricted after heavy rains because of the slowly perrne- able subsoil..A. crust forms on the severely eroded shots after hard rain,, thee clods form if 'those areas are worked when wet. The crust and the clods interfere with germi- nation.As a result, stands of crops are poor and replant- ing of the severely eroded spots is sometimes necessary. An even stand of tobacco is hard to obtain. Plants in an uneven stand mature at different tunes. This mares har- 34 SOIL SURVEY vesting; and curing of the crop difficult and reduces the quality of the tobacco. About one-fourth of the acreage is captivated or ill pasture, and the rest is in forest. ''1."his soil is fairly well suited to most of the locally grown. crops. Where it has been cleared, it is used chiehy for row crops. Very inten- sive practices that effectively control runoff and erosion are needed in the cultivated ureas. (Capability unit IW -A woodland suitability group 11, wildlife suitabil- ity group 1) Helena sandy loam, 10 to 15 percent slopes (FieD).­ 'phis is as slightly to moderately eroded soil on narrow side slopes bordering upland drain4gewa,ys. In the slightly eroded areas, the surface layer is dark grayish- broavn to light brownish -gray sandy loans 6 to 12 inches thick. In the moderately eroded areas, the surface layer is grayish -brown or pale -yellow sandy loans to strong- bro-wii clay loam and. is 3 to 7 inches thick. The subsoil is 10 to 24 inches thick and consists of yellow to strong - brown sandy clay or clay, with conrmoii gray mottles. It is very firm svlren moist and very plastic when wet. Included with this soil in mapping were some severely eroded spots where the subsoil is exposed. Infiltration is good, but permeability is slow and sur- face runoff is very rapid. The, hazard of further erosion is verve severe. IVliere this soil has been cleared, it is used chiefly for Polly crops, but it is fairly well suited to most of the locally grown crops. Most of the acreage is in forest, but a small acreage, is cultivated or in pasture. Very intensive practices that effectively control runoff and erosion are needed in the cultivates) areas. (Capability unit IVe-3, woodland suitability group 11, wildlife suitability group 1) Herndon Series The Herndon series consists of gently sloping to mod- erately steep, deep, ww-ell-drained soils of Piedmont, uplands. These soils occupy small areas in the western, southern, and eastern parts of the county. They are on side slopes and on rounded divides that have a difiereilce in elevation of about 50 feet between the highest and the lowest, points. The soils have formed under forest in material that weathered from phyllite (Carolina slates). The wvater table reinaains below the solum. Natural fertility and the content, of organic )natter are lows, and permeability is moderate. The available water capacity is medium, and the shrink -swell potential is moderate. Except in areas that have received lune, these soils are inediurn acid to strongly! acid. Response is good if suitable applications of lime and fertilizer are made. The Herndon soils of Wake County are not import•aant, for farming. Most of the acreage is in forest. Representa-tive profile of a Herndon silt loara`1 in a wooded area 1.4 miles south of U.S. Highway No. 1. and 10 yards south of county road No. 101.0; Cil 2 inches to 0, undeeoinposed and partly decomposed phie litter. Ap-0 to 6 inches, yellowish -brown (10YR 5/4) silt loam; weak, medium and fine, granular structure; very fri- able when moist; common, fine, and medium, woody roots; many tint pores,: common, small and inedium, subrounded quartz pebbles; strongly acid ; eleaa.r. wavy boundary. B1----6 to 9 inches, strong -brown (7.5YR 5/8) silty clay loam; weak, medium, .ubanganar blocky structure; friable when moist, slightly sticky and slightly plastic when wet; common, fine, woody roots: lawny fine pores; strongly acid; clear, €smooth bound ftry. B21t- A) to 20 inchcG, yellovish-red (5YR, 5/8) silty clay loam; strong, medium and fine, subangular blocky structure; friable when moist, sticky and plastic when wet; few, fine, woody roots-, common fine pores; thick, yellow- ish -red (5YR 5/8) clay films on peal surfaces; strongly acid; clear, smooth boundary. B22t-20 to 30 inches, yellowish -red (5)YR 5/6) silty clsay; many, fine, prominent. reel mottles and many, flue, prominent, browwnisia-yellow mottles; strong, nnedium sand fine, snbraaaguhur blocky structure; friable when moist, sticky and plastic when wet; thick and inoder- ately thick clay films; few, fine and medians, woody roots,; few fine pores; thick and moderately thick. continuous clay films; strongly acid; clear, smooth boundary. B3t-30 to 40 inches, mottled dark -red, red, and yellow silty clay loam; moderate, medium and fine, su•bangulaar blocky structure; friable when moist, Sticky and plas- tic w%—bell wet; common fine pores; thin clay films strongly acid; abrupt, smooth boundary. C-40 to 45 inches +, mottled red, yellow, white, and yellowc- ish-red silty clay loam; massive; friable when moist; ,strongly acid. The A horizon ranges from 3 to 8 inches in thickness and from very dark grayish brown or brown to yellowish brown in color. The B horizons range from 20 to 45 inches in thickness and from silty clay loam to silty clay in texture. The color of the B2t horizons range from strong brown to yellowish red in 7.5YR and 5YR hues. In many places those laorizaus contaiu common mottles of red or yellow. The combined thickness of the Pi and B horizons ranges from 36 to 48 inches. Depth to hard rock ranges from .> to more than 15 feet.. Herndon soils occur with Aplling, Gaorgeville, and. liIayodan soils. They have more silt and less sand throu<-;horst the profile than do the Appling soils. Herndon sails are less red than the Georgeville soils and have more atilt throughout their profile than the Mnyodan soils. Herndon silt loam, 2 to 6 percent slopes (Hr3).---This soil is on smooth interstrearn divides in the uplands. It• has a very dark grayish -brown or brown to -yellowish- brown ellowvish- broww n surface, layer 5 to 8 inches thick.. The subsoil is 20 to -15 inches thick. It consists of yellowish -red to strong - brown, friable silt.- clay loam to silty clay that contain.,; common mottles of red or yellow. Included in an.appil-Lg were many areas where from 20 to 50 percent of the salr- faace is covered with pebbles and cobblestones and froin 20 t<a 50 percent of the surface layer consists of pebbles and cobblestones. Infiltration is good, and surface runoff is medium. The hazard of erosion is moderate, This soil is fairly easy to keep in good tilth, and it, can be worked throughout: as wide range of moisture content. Most of the, acreage is in forest, but a small acreage. is cultivated or in pasture. This soil is wvell suited to most of the locally grown crops. Where' it has been cleared, it is used chiefly for row crops and pasture. Practices that offectively colitrol runoff and erosion -ire needed in the cultivated areas. (Capability unit IIe--2, -wvoodlaird suit- ability group 5, wildlife suitability group 1) Herndon silt loans, 2 to 6 percent slopes, eroded (HrB21.---'phis soil is in the uplands. In maaay, places its WAKE COUNTY, NORTH CAROLINA surface layer is a rnixtitiv of the remaining original sar- face soil and. of material from the subsoil. The surface layer is 4 to 6 inches thiole. In the less eroded areas, it is brown and yello wish -brown silt loam, but the color ranges to strong brown and the texture, ranges to si.lty clay loaarn. in the more eroded spots. The subsoil is 20 to 45 inches thick. It consists of yellowish—red to strong - brown, friable silty clay loan to silty clay that has com- mon mottles of red or yellow. Included with this soil in mapping were many areas where from 20 to 50 percent of the surface is covered with pebbles and cobblesstones, and from 20 to 50 percent. of the surface layer consists of pebbles and cobblestones. ,°also included were some severely eroded spots where the subsoil is exposed. These severely eroded spots make up from 5 to 25 percent of the acreage in the mappaing unit,. Infiltration is fair, and surface runoff is mediazan. The hazard of further erosion is mocleraate. This soil is diffi- cult to keep in good tilth and can be tiworked. within only a f tirly narrow range of moisture content, without puddling. A crust forns on the severely eroded spots after hard rains, and clods form if those areas are worked when wet. The crust and the clods interfere with germination. As a result, stands of crops are poor and replanting of those areas is sometimes necessary. most. of the acreage is in forest, but, a small acreage is cultivated or in pasture. The cultivated areas are, used chiefly for row crops, but this soil is well suited to most other locally nrosvn crops. Practices that effectively con- trol runoff ansa erosion are needed in the cultivated'areas. (Capability unit Ile -2, woodland suitability group 5, wildlife suitability group 1) Herndon silt loam, 6 to 10 percent Slopes (HrQ.—This soil is on short side slopes in the uplands. It, has a very dark grayish -brown or brown to yellowish -brown surface layer 5 to 7 inches thick. The subsoil is 20 to 40 inches thick. It is yellowish -red to strong -brown, friable 41t.y clay loam to silty clay and contains COIIIII1O71 mottles A red or yellow. Included in mapping were many areas where from 20 to 50 percent of the surface is covered with pebbles and cobblestones, and from 20 to 50 percent -)f the surface. la-yer con�aists of pebbles and coO)le,401les. Infiltration is good, and surfa eo. runoff is rabid. The :a.arard of erosion is severe. This soil is fairly easy to zeep irr good filth and can be worked throughout a. slide range of moisture coutent.. A large part of the acreage is irr forest., but this soil s well suited to most, of the locally grown crops. 'There t has been cleared, it is used chiefly for row crop,. Intensive practices tint; effectively control runoff and Tosion arse needed in the cultivated areas. (Capability snit IIIe--2, woodland suitability group 5, wildlife suit.- ability group 1) Herndon silt loafs, 6 to 10 percent slopes, eroded - rC2). This soil is on short side slopes in the uplands. .ts surface layer is 4 to 6 inches thick. In many places L is a mixture of the remaining original surface soil nd of material from the subsoil. In the less eroded areas, Ere surface layer is brown to yellowish -brown silt loam, ut the color ranges to strong brown and the texture tinges to silty clay loam in the more eroded spots. The 35 subsoil is 20 to 40 inches thick. alt consists of yellowish - red to strong -brown, friable silty clay loam to silty clay that contains common red or yellow mottles. Included with this soil in mapping were. many areas where from 20 to 50 percent of the surface layer'is cov- ered os-ered with pebbles and cobblestortes, aaald from 20 to 50 per- cent of the surface layer consists of pebbles and cobble- stones. Also included were soine severely eroded spots where the subsoil is exposed. These severely eroded spaots occupy frons 5 to 25 percent of the acreage in the mapping atni.t. Infiltration is fair, and surface runoff is rapid. The Hazard of further erosion is severe. This soil is difficult to keep in gored tilth and can be worked within only a fairly narr°osw r1arzge. of moisture content,. A crust foratts on t -h® severely eroded spots after hard rains, and clods foran if those areas are worked when wet. The, crust. and the clods interfere with germination. As aa. result,, stands of crops are poor and replanting of the severely eroded areas ma,y be necessary. A large part of the acreage is in forest, but this soil is well santed to most of the locally grown crops. Where it has been cleared, it, is used chiefly for rosy crops and pasture. Practices that effectively control runoff and ero- sion are needed in the cultivated areas. (Capability unit IIIe-2, woodland suitability group 5, wildlife suitability group 1) Herndon silt loam, 10 to 15 percent slopes, eroded (Hrd2)._.-This soil is on narrow side slopes bordering upland drainageways. In most palaces it is moderately eroded, but it is only slightly eroded in some places. lit the moderately eroded areas, the surface layer is brown or yello-wish-brown silt, loans to strong -brown silty clay loam. In the slightly eroded areas, the surface layer is very dark grayish -brown and brown to yellowish -brown silt loam. The surface layer is 3 to 6 inches thick. The sub- soil is 20 to 36 inches thick and consists of vellowish-red to strong -brown, frhi.ble silty clay loam to silty clay that contains comrzaon mottles of red or yellow, Included with this soil in mapping were areas where from 20 to 50 percent of the surface is covered with pebbles and cobblestone;, and from 20 to 50 percent of the surface layer consists of 1)ebbles and cobblestone . Also in- cluded were some severely eroded spots where the cMbsoil is exposed. lnfiltra.t.iorz is fair to good, and surface rurtofYis A-ery rapid. The hazaa,rd of further erosion is very severe. 11"here this soil is only slightly eroded, it is fairly easy to keep in good tilth. ""hese it is moderately eroded, it is difficult to keep in good tilth and can be worked witli_ irr only a fairly narrow range of rra.oistaare content-. k. crerst formas on the severely eroded spots after hard rains, and clods form if those areas are worked when wet, The creast, and the clods interfere with germination. As a result, stands of crops are. poor and replanting of the severely eroded spots may be necessary. A. large part of the, acreage. is in forest, but this soil is well suited to rncst of the locally grown crops. Where it has been cleared, it is used chiefly for row crops. prac- tices that effectively control runoff and erosion are needed in the cultivated areas. (Capability aunt We -2,1 wood- land suitability group 5, wildlife suitability group 1) EM SOIL SURVEY Herndon silt loam, 15 to 25 percent slopes soil is on narrow side slopes bordering major drainage - ways in the uplands. It, is slightly eroded in some place's anil is moderately eroded in others. Ira the slightly eroded areas' the surharx) layer is very dark g; .ayish, �r(9w1a or brown to yellowish-l;roivn silt town 4 to G riches tliicki In the rnoden toy eroded areas, the surface layer is brown to yellowish -brown silt loam to strong -brown silty clay loanand is 3 to 7 inches thick. The subsoil is 20 to 30 inches thick. It consists of yellowish -red to strong - brown, friable silty clay loam to silty clay, with comaaaon mottles of red or yellow. Included Nvitb gals soil in inapping were, many areas where from 620 to 50 percent of the; surf ace is covered With pebbles said cobblestones, and area.s where fr•ouz 20 to 50 percent of the surface layer consists of pebbles and cobblestones. Also included were some s('Verely eraadE'.d spots where the `ubs;oil is exposed. Infiltration is fair to good, and surface runoff iw very rapid. This soil is highly susceptible to further erosion. Pr actio ally all of the tic rea-ge is in forest, but areas of this soil that have been cleared are well suited to pas- ture and hay crops. This soil is not suited to crops that require cultivation. (Capability unit Vl;e--1, woodland suitability group 5, wildlife suitability group 1) Lloyd Series The Lloyd series consists of gently sloping to strongly sloping, deep, well -drained soils oil Piedmont uplands in the western part. of the county. The soils are on side slopes and on rounded divides that, have as difference in elevation of about 30 feet, between the highest and the lowest points. They have formed under forest in nnateriaal that iventhered frown hornblende gneiss. The wy iter table remains below the solum. Natural fertility aand tho contealt of organic. naaatt•er are low, The aavailaa,ble -water capacity is medium, and per- meability and the shrink -swell potential are moderate. Rxcept in areas rVhere, these soils have received lisle, they are slightly acid to medinin acid. Response is good if slaitabl, applications of lime, amid fertilizer are Heade. The 7d}old soils of lVa l e P.'Ixe of onl.v naialol~ importance for farming,'N1uch of the acreage, is in forest. Representative profile of a Lloyd lonm 3.<)O yaarcd„ northeast of Bass hake and 12ei feet, south of road Ap 0 to 9 inches, dark reddish-brotnn (2.:.3YR 4/4) loam; inoden te, anediva a and fine, granular structure; very friable when moist: many line aand medians, woody atad fibrous roots; nanny fine pores; few small quartz pebbles; medium acid; abrupt, wavy boundary. L21t-9 to 12 inches, red (2.5YR 4/6) clay loam; moderate, medium and fine, subangular blocky struc=ture; turn when moist, sticky and plastic when wet; common, fine, woody and flbrous roots; massy fine pores; thin clay films; few small quartz pebble.,,,; medium acid; clear, wavy boundary' S22t 12 to 32 inches, red (lOR 4;6) clay; moderate, fide. subangular blocky struetmre ; firm when moist, sticky and plastic when wet; common, fine, woody roots- many oots;many fine pores; medium clay film,,;; medium acid; clear, smooth Boundary. 1323t---32 to 38 inches, dark -red (IOR 3/6) clay loam, com- mon, fine, distinct, red mottles; moderate, fine and medium, subangular blocky structure; firm when moist, sticky and plastic when wet.; few, fine, woody roots; many thie pores; thick and inedinm a;laay i€lens; medluni acid; clear, smooth boundary. 113t-38 to 44 inches, red (2.1518 4/6) silty clay lo2_na, many, fine, prominent, strong. -brown mottles ; moderate, fine and medinin, saaba.nga lar blocky strueture*; friable WN'la moist, sticky and plastic when wait; many fine pores; thin, continuous clay filins ; niedliun Acid; €ibrnpt, smootia boandaary. C._.-44 to 50 inches -N, mottled red and yellrrwish-x°€ 1 •silty clay loam; amnssive ; friable when moiarit ; few thick clay films in vertical cracks; medium acid. The A. horizon ranges from 4 to 1.2 inches its thickness, and the 13 horizons range from 30 to GO inches in coinbinod tliictk- nees. ` be combined thickness;; of the A horiza n and U horizons ranges from 36 to 60 inches. The texture= of the 13 horizonaa ranges from clay to clay loam or silty clay loam. The color of the Bat horizons ranges from red to dark r a in 2.5YR or 1,01t lutes. In massy places these soils are mottled with strong brown. Depth to bard rook ranges from as to mare thaau 16 feet'. Lloyd soils occur with Cecil, Madison, and Ueorgeville soils, They have a darker reel color in some parts of the Rubsoll than do those soils, and they have loss silt throughout the pro- file than ther Georgerille Broils. Lloyd loam, 2 to 6 percent, slopes, eroded (LdB2).-- phis soil is on broad, smooth. iaaterstream divides in the up- lands. The surface layer is 4 to 12 inches thick. In anarap places it is as azustaare of the remaining original sur°faa,c:^e soil and of material fronk the subsoil. In the less eroclod areas, the surface layer is reddish -brown loam, but than colon' ranges to dark reddish brown and the texture ranges to clay loans in the snore eroded spots. The sub- soil is reel and dark -red, firm clay loam to clay that is �W to 50 inches thick. lucluded with this soil in inaapping were some severely eroded spots, which occupy from 5 to 25 percent of t;he total acreage in the mapping; unit. also, in some places from 20 to 30 percent. of the surface is col—eyed with pebbles and eobble.stoiieaa, and from 20 to °lo hercent of the aIurface layer consist" - of )aebldes and c=crJale-tonei;. Infiltration is fair, and surface runoff is inedium. The hazard of further erosion is moderate, This soil is diffii- Cult to keep in good tilth and. can be worked within oily a. fairly narrow range of moisture content without pud- dling. A crust forms on the severely eroded spots after hard rains, and clods form if those areas are. worked when wet. The crust and the clods interfere with gerinin.. aa•tion. As aa, result, stands of crops are poor and re.plaaart, ing of the sec-erely eroded spots inay be necessary. About half of the , re:ige i.s cultivated or in pa t -tare, and t.lae rest is in forest. Where this soil h:a.s been cleared, it is used chiefly for row crops, but it is well suited to inost of the locally grown crops. Practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit fIe-2, woodland suitability group Ea, wildlife suitability group 1) Lloyd loam, 6 to 10 percent slopes, eroded. (WC2).. This soil is on narrow side slopes in the uplaands. Its sur- face layer is 4 to 10 inches thick. In many places it, is a mixture of the remaining original surface soil and of materiaal from the subsoil. In the less eroded. areas, the surface layer is reddish -brown loam, but the color ranges to dark. reddish brown ;and the texture ranges to clay loam in the more eroded. shots. The subsoil is 30 to 42 inches thick and consists of red and dark -rest, farms clap loa,ln to clay. Included with this soil in lna•pping were son-ae severely WAKE COUNTY, NORTH CAROLINA eroded spots that occupy from 5 to 25 percent of the acreage In the mapping unit. Also, in some places from 20 to 30 percent of the surface is covered with pebbles and cobblestones, and from 20 to 30 percent of the surface layer consists of pebbles and cobblestones. Infiltration is fair, and surface runoff is rapid. The hazard of further erosion is severe. This soil is difficult to keep in good tilth and can be worked within only a fairly narrow range of moisture content without pud- dling. A crust forms on the severely eroded spots after hard rains, and clods form if those areas are worked when wet. The crust and the clods interfere with germin- ation. As a result, stands of crops are poor and replant- ing of the severely eroded areas may be necessary. Most of the acreage is in forest, but this soil is well suited to most of the locally grown crops. Where it has been cleared, it is used chiefly for row crops. Practices that effectively control runoff and erosion are needed in the cultivated areas. ( Capability unit IIIe-2, wood- land suitability group 5, wildlife suitability group 1) Lloyd loam, 10 to 15 percent slopes, eroded (LdD2).— This soil is on narrow side slopes bordering drainage - ways. Its surface layer is 4 to 8 inches thick. In many places it is a mixture of the remaining original surface soil and of material from the subsoil. In the less eroded areas, the surface layer is reddish -brown loam, but the color ranges to dark reddish brown and the texture ranges to clay loam in the more eroded spots. The subsoil is red and dark -red, firm clay loam to clay that is 30 to 36 inches thick. Included with this soil in mapping were some severely eroded spots that occupy from 5 to 25 percent of the total acreage in the mapping unit. Also, in some places from 20 to 30 percent of the surface is covered with pebbles and cobblestones, and from 20 to 30 percent of the surface layer consists of pebbles and cobblestones. Infiltration is fair, and surface runoff is very rapid. The liazard of further erosion is severe. This soil is diffi- cult to keep in good tilth and can be worked within only a fairly narrow range of moisture content without puddling. A crust forms on the severely eroded spots after hard rains, and clods form if those areas are worked when wet. The crust and the clods interfere with germination. As a result, stands of crops are poor and replanting of the severely eroded spots may be necessary. Most of the acreage is in forest., but this soil is well suited to most of the locally grown crops. Where it has been cleared, it is used chiefly for row crops. Practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit IVe-2, woodland suitability group 5, wildlife suitability group 1) Louisburg Series The Louisburg series consists of gently sloping to strongly sloping, moderately deep, somewhat excessively drained soils on Piedmont uplands. These soils occupy large areas in the northern and eastern parts of the county and small areas in other parts. They are on side slopes and on rounded divides that have a difference in elevation of about 30 feet between the highest and the lowest points. The soils have formed under forest in 37 material that weathered from granite, gneiss, schist, and other acidic rocks. The water table remains beneath the solum. Natural fertility and the content of organic matter are low. Permeability is moderately rapid, and the available water capacity and the shrink -swell potential are low. Except in areas that have received lime, these soils are strongly acid. Response is fairly good if suitable applica- tions of fertilizer and lime are made. The Louisburg soils in this county are fairly important for farming, but much of the acreage is in forest. Representative profile of a Louisburg loamy sand in a cultivated field three-fourths of a mile south of Hodges Creek and 30 yards east of county road No. 2217: Ap--O to 8 inches, dark grayish -brown (10YR 4/2) loamy sand, weak, medium, granular structure; very fri- able; many fine, fibrous roots; common coarse frag- ments of feldspar; strongly acid; abrupt, smooth boundary. B-8 to 12 inches, yellowish -brown (10YR 5/4) sandy loam; structureless ; very friable • few, fine, fibrous roots; common coarse particles of feldspar; strongly acid; clear, smooth boundary. C-12 to 36 inches, brownish -yellow (10YR 6/6) loamy sand; structureless; very friable to loose; strongly acid; abrupt boundary. R-36 inches +, hard granitic gneiss. The Ap horizon ranges from 4 to 10 inches in thickness and from very dark grayish brown or dark grayish brown to light yellowish brown in color. The B horizon ranges from 4 to 35 inches in thickness. Its color ranges from light yellowish brown to yellowish brown or yellowish red in hues of 2.5Y to 5YR. In places the profile contains a discontinuous lower B horizon that ranges from 2 to 6 inches in thickness and from sandy clay loam to sandy clay in tex_ture. The texture of the C horizon is commonly loamy sand, but it ranges to sandy clay loam in some areas. The combined thickness of the Ap horizon and B horizons ranges from 20 to 50 inches. In general, depth to hard rock is 2 to 4 feet, but outcrops of rock are common in most of these soils. Louisburg soils occur with Wedowee, Wake, and Wilkes soils. Their subsoil is coarser textured than that of the Wedo- wee sails, and their solum is thicker than that of the Wake soils. They are more acid and generally have a coarser tex- tured subsoil than the Wilkes soils. Louisburg loamy sand, 2 to 6 percent slopes (LoB).— This soil is on small rides in the uplands. Its surface layer is very dark grayish -brown to light yellowish - brown loamy sand 4 to 10 inches thick. The subsoil is light yellowish -brown to yellowish -red, very friable sandy loam 4 to 35 inches thick. Included with this soil in mapping were some areas in which from 20 to 50 per- cent of the surface is covered with pebbles and cobble- stones, and from 20 to 50 percent of the surface layer con- sists of pebbles and cobblestones. Infiltration is good, and surface runoff is medium. The hazard of erosion is severe. This soil is easy to keep in good tilth and can be worked throughout a wide range of moisture content. About two-thirds of the acreage is in forest, and the rest is cultivated or in pasture. Where this soil has been cleared, it is used chiefly for row crops, but it is fairly well suited to many of the locally grown crops. Because of the slopes and shallowness over bedrock, intensive practices that effectively control runoff and erosion are needed in the cultivated areas. During rainy seasons, its coarse texture makes this soil subject to leaching of mobile plant nutrients. (Capability unit IIIe-4, wood- 38 SOIL SMIVEY hand suitability group U),, wildlife suitability group 4) Louisburg loamy sand, 6 to 10 percent slopes RoC), This soil is on side slopes in the uplands. Its surface layer is very dark grayish -brown tolight yellowish - brown loamy sand 4 to 8 inches thick. The subsoil is light, yellowish -brown to yellowish -red, very friable sandy loam 4 to 30 inches thick. Included in mapping were some ,Areas in which from 20 to 50 percent of the surface is covered with pebbles and cobblestones, and from 20 to 50 percent of the surface layer consists of pebbles and cobblestones. Infiltration is good, and surface runoff is rapid. The hazard of erosion Is very severe. This soil is easy to keep ill good tilth and can be, worked throughout a wide range of moisture content. Most of the acreage is in forest, but this soil is fairly well suited to many of the locally grown crops. Where it has been cleared, it is used chiefly for ro%%> crops. Inten- sive practices that, effectively control runoff and erosion are needed in the cultivated areas. During rajil.17 Seagolls, its coarse texture makes this soil subject to leaching of mobile plant mitrients. (Capability unit Ire -3, wood- laild, suitability group 12, wildlife suitability group 4) Louisburg loamy sand, 10 to 15 percent slopes (LoD).— This soil is oil side slopes bordering drainageways in tho, uplands. Its surface layer is very dark grayish -brown to ligght, yellowish -brown loamy sand 4 to 6 inches thick. The subsoil is light yellowish -brown to yellowish -red, very friable sandy loam that is 4 to 24 inches thick. Included in mapping were some areas in which from 20 to 50 per- cent of the surface is covered with pebbles and cobble- stones, and from 20 to 5 )0 percent of the surface layer con- sists of pebble --and cobblestones. Infiltration is good, and surface runoff is very rapid. This soil is highly susceptible to further erosion. This soil is not suitable for cultivation, and practically all of the acreage is in forest. Areas that have, been cleared should be rased for pasture or hay crops. (Capa- bility unit Vle-L, woodland suitability group 12, wildlife, suitabilit3, groin) 4) Louisburg-Medowee complex, 2 to 6 percent slopes ?1v,(B).—Soils of this mapping unit, are so intricately mixed that they carinot be s!op,,irated on a niaj) of the scale used. .Xlso, the areas of each soil are crenerall t_ y too small to be managed ,is an individual unit. Therefore, these soils were mapped together as n soil complex. In a typical mapped area, about 00 percent: of the acreage is Louis- burg soil, 38 percent is Wedowee soil, and 2 percent is Darliani, Vance, and other soils. The soils are on small ridges in the northeastern part of the county. The Louisburg soil liais, a, very dark grayish-brovn to light, yelloivish-brown surface layer of loamy sand 5 to 8 inches thick. The subsoil is light yellowish -brown to yello-%6sh-red, very friable to loose sandy loam 15 to 35 inches thick. The Wedowee soil lias a dark grayish -brown to light yellowish-1_)rOW11 surface layer of sandy loans that grades to loamy &III(I and is 5 to S Inches thick. The subsoll is yellowish-browll to yellowish -red, firm sandy clay loam 9 to 20 inches thick, Included with these soil-, in inapping were some, areas surfacein which 20 to 60 percent of the surface IS covered with pebblesand cobblestone, . In those. ureas from 20 to 5o per- cent of the surface layer consists of pebbles and cobble- stones. Infiltration is good., and surface runoff is medium. The hazard of erosion is severe. These soils are easy to keel) in good filth and can be, -worked throughout a wide range of moisture content. Most of the acreage is in forest, but these soils are, fairly well suited to many of the locally growa crops. Intensive practices that effectively confror runoff and erosion are needed in the cultivated areas. (Capability unit Ille-4, woodland suitability group 12, wildlife suit- ability group 4) Louisburg -Wedowee complex, 2 to 6 percent slopes, eroded RwB9).—The soils of this complex are on rallier small ridges in the northeastern part of the county. In a typical mapped area, about. 60 percent of the acreage is Louisburg soil, 88 percent is Wedowee soil, and 2 per- cent is Durham, Vance, and other soils. The Louisburg soil of this coraple-x: has a grayish - brown to light yel lowish -brown surface, layer of loamy --sand 4 to 8 L, inches thick. Its subsoil is light yellowisl;.- brown to yellowish -red, very friable to loose sandy loam 15 to 35 inches thick. The lVedo-%vee soil has a surface layer 3 to 7 inches thick. In many places its surface layer is a mixture of the remaining original surface soil and of material from the, subsoil. In the less eroded areas, the surface layer is grayish -brown to pale -brown sanely loam. The. . color ranges to strong brown and the texture, ranges to sandy clay loam, however, in severely eroded spots, and thos'(11 areas inake up from 5 to 10 percent of the total acreage in the, 'napping unit. The, subsoil is yellowish -brown to yellowish -red, firm sand), clay loam 9'to 20 iiielies thick. Included with these soils in mapping were some areas in which from 20 to 50 percent of the, surface is covered with pebblestind cobblestones. In those areas from 20to,50 percent of the surface layer consists of pebbles and cobblestonet, In the Louisburg soil, infiltration is good. In the Wed- owee soil, it is only fair. Surface runoff is rnedium, and the hazard of further erosion is severe. The Louisburg soil is easy to keep iia good tilth and can be workod throughout-, a wide range of moisture content. The Wed- owee soil is difficult to keep in good tilth, but, it call be worked throughout a fairly -%vide, range of moisture content. 1fost of the acreage is in forest, but these soils are fairly well suited to = rulaily of the locally grow'11 Crops. Intensive practices that effectively control. 1-11110:ff arld erosion are needed in the, cultivated areas. (Capability unit TIle-4, -vmodland suitability group 12., wildlife ability group 4) Louisburg -Wedowee complex, 6 to 10 percent slopes (LwC).--The soils of this complex are on side ,lopes of medium length in uplands in the northeastern part of the. ('Oullity. In a typical mapped area, about 60 percent of the acre,ige is Louisburg soil, 38 percent is Wedowee soil, and 2 percent is Durham, Vance, and other soils. The Louisburg soil has 9, dark gnayish-brown to light yellowish -brown surface layer of loamy sand 4 to 6 inches thick. Its subsoil is light yellowish -brown to yellowish -red, vers- friable to loose san(Tv loam 15 to 30 inches, thick. WAKE COL ly1TY, NORTH CAROLINA The Wedowee soil haas a dark grayish -brown to light. yellowish -brown surface layer of sanely loam that is 4 to 6 inches thick and grades to loamy sand. Its subsoil is yellowish -brown to yellowish -red, firm sandy clay loam to 15 inches thick. Included with these soils in naaapping were some areas in which from 20 to 50 percent of the surface is covered with pebbles and cobbloa tones. In those areas from 2.0 to 50 percent of the surfwa e layer consists of pebbles and cobblestones. Infiltration is good, and surface runoff is rapid. The hazard of erosion is very severe. These soils are easy to keep in good tilth and CAn be worked throughout aa, wide singe of moisture content. dost of the acreage is in forest, but, these soils are fairly well suited to many of the locally grown crops. If cultivated crops are grown, intensive practices that. ef- fectively control runoff and erosion are needed. (Capabil- ity unit I11'e-3, woodland suit -ability ;roup 12, wildlife suitability group 4) Louisburg -Wedowee complex, 6 to 10 percent slopes, eroded (lwC2).—These boils are on side slopes of medium length in uplands in the northeastern part of the county. In as typical snapped area, about 60 percent, of the acre- age is Louisburg soil, 36 percent is Wedowee soil, and 2 percent is Durham, Vance, and other soils. The Louisburg soil has a gM, yish-brown to light yel- lowish -brown surface layer of loamy said 4 to 6 inches thick. The subsoil is light yello-wish-brown to yellowish - red, very friable to loose sanely loam 15 to 30 inches thick. The Wedowee soil has a surface layer that is 3 to 7 inches thick. In many places its surface layer is a. mix- ture of the remaining original surface soil and of inater- ial from the subsoil. In the, slightly eroded or nioder- aately eroded areas, the surface layer is grayish -brown to pale -brown sandy loam. The color grades 'to strong brown and the texture ranges to sandy clay loam in the severely eroded spots. The severely eroded spots snake up from 5 to 10 percent, of the, acreage in the snapping unit. The subsoil is yellowish -brown to yellowish. -red, firm sandy clay loam r5 to 15 inches thick. Included with these soils in mapping were some areas in which from 20 to 50 percent of the surface is covered with pebbles nand col>hle ;toues. In those aareas from 21) to 50 percent of the surface layer consists of pebbles and cohl.�le�fones. For the Louisburg soil, in%.Itr,a,tion is good and sur- face runoff is medium. For the IlTedowee soil, infiltration is fair and surface runoff is rapid. For both soils, the hazard of further erosion is very severe. The Louisburg soil is easy to keep in ,good tilth. and can be worked throughout °a wide range of moisture content. The Wed- owee soil is difficult to keep in hood tilth, but it caia be worked throughout a fairly wide range of moisture content. Most of the acreage is in forest. Because of the slope and bedrock hear the surface in many places, intensive practices that effectively control runof and erosion are needed if these soils are cultivated. (Capability unit. IVe--3, woodland suitability group 12, wildlife suita_ 1}ility group 4) - 'M-403-70----4 Lynchburg Series fit The Lynchburg series consists of soils that. are ilearli- level, very deep, and somewhat poorly drained. These soils are in upl;.and depressions of the Coastal Plain i1.I the southern part of the county. They leave .formed under forest in Coastal Plain sediment. -,,k seasonally high water table is at a depth of about 11/2 feet. Natural fertility and the content of organic matter are low, permeability is moderate, and the available water capacity is medium. 'fele shrink -swell potential is lo -w. Except in areas that have received lime, these soils are strongly acid. Response is good if suitable applications of lime and fertilizer are made. 1dlost areas of Lynchburg soils are cultivated or in pas- ture. Because of their limited acreage in Wake County, however, these soils are not important for farming. Representative profile of Idynchburg sandy loam in it cultivated field 0.5 mile west of Fuclnay Springs on N.C. highway No. 42, 0.75 mile north on a paved road, 100 yards west on a farm road, and 200 yards south of farm road Ap-0 to S inches, grayish -brown (10YP 5/2) sanely loam; weak, medium, granular structure; very friable when moist; many fine and medium, fibrous roots; eom• mon fine pores; medium acid; abrupt, irregular boundary. A2-8 to 13 inches, light yellowish -brown (2.5Y 6/4) .sandy loam; weak, medium, granular structure; very fri- able when moist; few, fine, fibrous roots; many fine pores; medium acid; abrupt, wavy boundary. BI --13 to 16 inches, oliva yellow= (2.5Y (3/6) sandy clay loam ; few, medium, distinct, brownish -yellow mottles; weak, fine and medium, subangular blocky structure; fri- able when moist, sticky and plastic when wet; few. fine, fibrous roots; many fine pores; .strongly acid; abrupt, wavy boundary. B21t-.-16 to 20 inches, light ,yellowish -brown (2.5Y 6/4) sandy clay loam; many, medium, distinct, yellowish -brown mottles; moderate. fine and medium, subangular blocky structure; friable when moist, sticky and plastic when wet; common fine pores; few thin clay films; ,strongly acid; gradual, smooth boundary. B22t--20 to 26 inches, light brownish -gray (2.5Y 6/2) sandy clay loam; common, medium, di �tixict, yellowish-laiodvia mottles and few, medium, prominent, yellowish -reel mottles; moderate, fine alio medium, subangular blocky structure; 'friable when inoist, sticky and plastic when wet; many fine pores; few thin clay films on ped surfaces; strongly acid; gradual, smooth boundary. B23tb `26 to 31 inches, light brownish -gray (IOYR 6/2) sandy clay loam ; many, coarse, distinct, yellowish -brown (10YR 5/8) mottles; weal:, fine and medium, sub aizgular blocky structure; friable when moist, sticky and plastic when `vet; common fine pores; thin duly films on ped surfaces; strongly acid; gradual, smooth boundary. B24tg-----31 to 37 inches;, mottlecl light, brown4sb-grey (2.5 6/2) and yellowish -brown (10YR 5/8) stinely clary loam; weal., inedium and coarse, su.ba.nguhir blocky structure; friable when moist, sticky and plastic when wet; common line pores; few thin clay films; strongly a e d ; abrupt, smooth boundary. B%,_87 to 65 inches, coarsely mottled light: brownish -gray (2.5Y ()/2), red (2.5YR 4/8), and brownisli-;yellow (10Y1t 6/8) heavy ,mzidy loam; tiveak, coarse, sub- angular blocky structure; very friable when moist, sligbtly sticky and slightly plastic when wet; strongly acid; clear, smooth boundary. SOIL SURVEY G-65 to 72 hwbey -h, mottled gray, yellowish -brown, .assts red clay; ma,%sive ; firm when moist; strongly acid. The r1. horizon,,4 range from 8 to 20 inches in combined thick- ness and from dark brown or dark grayish brown to light yellowish brown or light gray in color. The Bt horizons range from 21 to i30 iuelies in combined thiekatess. Thein texture is mostly sandy lo.,jm or sandy clay loam that is 1S to 35 percent clay. In place, these horizons contain 1)rtcket,4 and leas€s of sand. The color of the .lit horizons ranges from yellowish brown to pale yellow or light brownish gray in 10YR or more yellowish hues. In places few to common gray mottles are within 10 incites of the top of the uppermost Bt horizon. The 133g horizon is Ntl.e brown to light brownish gray or brownish yellow and gene, rally contains diAinct, grayish mottles. The combined thickntwq of the A horizons and Is horizon:.4 is more than. 60 lnches> Depth to bedrock is more than 20 feet.. Lynchburg soils occur with Goldsboro and Rains wails, and their texture is similar to the texture of those soils. They are less well brained than the Goldsboro soils, however, and are better drained than the Rains. Lynchburg sandy loam. (0 to 2 percent slopes) (Ly). -- This is the only Iiynchburg soil snapped in Wake Coun- ty. It is in depress ions in upliancls of the Coastal Plain. The surface layer is dark -brown or light -gray to very dark gray sandy loam 8 to 20 inches thick. The subsoil is W to 60 inches thick and is pale -yellow to yellowish - brown, friable sandy loam to sandy clay loam mottled with shades of gray. Infiltration. is good, and surface runoff is slow. This soil is easy to keep in good tilth and can be worked throughout a wide range of moisture content. Drainage is required for most rows crops to do well On this soil. If proper drainage is provided, this soil is well suited to most of the locally grown crops. It is used mainly for row crops or pasture. (Capability unit IIw-1, woodland suitability group 4, wildlife suitability* group 2) Made land (Mea) is a miscellaneous Iaand type, in -which Be areas have been altered by main to the extent• that the profile of the original soils cannot be recognized. The altered soil rnater.ial does not function as did the original soil, and in many places it does not resemble the original soil. Soine areas of Made land were made when cutting and filling was done to eonstruct parking lots, airfields, indus- trial sites, and highway interchanges. In many plaices all or part of the solum and part of the material underlying the original soil;, was cu.t, from one area and was moved to nuotlier spot for use as fill material. Other areas of i0latle I<an.d are near quarries where the overbul-den has been damped into large mounds. In those places gravel hats been spread and packed into the soils until the soil material is compacted and hard. The areas included in. this land type are so diverse in characteristics that general statements cannot, be made about them. Onsite examination of each area is necessary before any land use is planned. (Not placed in aa, cap,;- bility unit; woodland suitability group 13, wildlife suit- ability group 5) Madison Series The Madisou series consists of gently sloping to mod- erately steep, deep, well -drained soils that occupy fairly small areas on Piedmont uplands in the northern part of the county. These soils are on side slopes and on rounded divides where the difference in elevation is about 60 feet between. the highest; and the low est points. They have formed under forest in material that, weathered from mics, schist, i- ica ghteiss, ;and other acidic rocks® Natural fertility and the content of organic, matter are los`-, permeability is moderate, and the avaailable water capacity is meditam. The shrink -swell potential is mod- erate. Except in areas that have received hale, these soils ire strongly acid. Response is good if suitable applica- tions of lime and fertilizer are made. Tb e, Madison soils of Woke County are not important for farming. They are mostly in forest. Representative profile of a Madison sandy loam] in aG ,rooded tre°a ! n-ailes west of the Zdense, River Fridge on N.C. Highway No. 98 and to yards south of road.: Ap--0 to 6 inches, brown (10YR 5/3) sandy losanl; weak, medium, granular structure; very friable when moist; many fine, woody and fibrous roots; eominon fine mica. Bakes,; few small quartz and quartz mica sebi:st peb- isle•; medium acid; abrupt, wavy boundary. B1-6 to 12 inches, red (2.5YR 4/6) heavy sandy clay loam; weak, medium, subangular blocky structure; friable when moist, slightly stielcy and slightly plastic when wet; common, fine, Broody nnb fibrous roots; common fine mica flakes; strongly acid; abrupt-, wavy bound- ary. B2t--12 to 20 inches, red (2.5YR 4/0) clay loam ; moderate, medlum, subangular blocky structure; friable schen moist, slightly stiC,ky and slightly plastic when wet; thin clay films; common. fine, woody tend fibrous roots; in€any fine mica flakes: fess partly disinte- grated schist fragments ; strongly acid; abrupt, wavy boundary. i33t-26 to 32 inches, red (2.5YR 4/6) sandy clay loam; moder- ate, medinni, subangular blocky structure ; friable when anoist, slightly sticky and slightly plastic when Nvcit; fern thin clay films; fern, small, woody roots; main, fine mica flakes; common schist fragments, and pale -yellow and dusky -real mottles around the: frag- rnwnts; strongly acicl; clear, wavy boutad^try. C-32 to 48 in(laes +, mottled dusky red, reds pale -yellow, strong -brawn, and brown silt loam disintegrated quartz mica schist; common dark flay€kcs Haat; appear to be dishitegr¢ated garnet.; Etas, sanaTl, woody roots extending to a depth of snore than 48 strongly. acid. The p horizon raaages from 3 to 10 inches, in thickne:%s and fa om dark brossn to brown in color. The B horizon`~ range from 10 to 35 inches ill Combined thickm.�; mad from sandy ehay lotus to May in texture. The BI horizon is red to red. The modal eolor of the Bt horizons is reel of 2.5YR hue, but the color of those horizons range,.,,; to dark red. The number of mivo tlal.es ranges from fess to cornnron in the a horizon and frown eonaanon to mane in [lie BI horizon, but the B2t horizon, and, in places, the C Horizon, contain nnaar,y aniea flakes. The combined tlaickrtess of the Ap horizon awl P3 horl- zons, ranges from 20 to 40 inches, and, ill places, the thicknes:5 s cries greatly within a short, lateral distance. Depth to hard roti: ranges from 5 to more than 10, feet. Madison soils occur with the Cecil, Georgeville., and. Lloyd soils. but they have athinner solaarn and contain more mica flakes than diose .Soils. T]w tSadison soils contain less- silt than the Georgeville Flails and are more acid than the Lloyd soiLq. Madison sandy Ioam, 2 to 6 percent slopes, eroded (MdB2).---This soil is on smooth interstreant divides. Its surface layer is 3 to 10 inches tliiek, In many- places it is ati ins tune. of the remaining original surface soil sand of maaterial from the sttbaoil.�In 9lae ies� eroded areas, the surface layer is dark brown to brown, but the Color is SAKE COUNTY, NORTH CAROLINA redder and the, texturo ranges to clay loam in the more eroded spots. The subsoil is red to dark -red, friable clay to clay loam and is 10 to 28 inches thick. Tncluded with this soil in mapping were Some severely eroded spots where the snbsoil is exposed. These spots luake up froarr 5 to 21 percent of the acreage, ill the inping writ. Tifiltration is fair, and surface rarnoff is medium. The hazard of further erosion is moderate. This soil is diffi- cult to keep iar good tilth, but it call be worked through- out a fairly ~vide raI.i of moisture content. A crust forms on the severely oroded spots after hard rains, and clods form if those areas are worked when met. The crust and the clods interfere with germinaation. As a result, stands of crops are poor and replanting of the severely eroded spots may be necessaaxy. About half of the acreage is cultivated or in pastare, and the rest is in forest. Where this soil has been cleared, it is used ohiefly for row crops and pasture, but it is well smite(= to all tht� locally grown crops. Practices that effee- tively contr<al nmol and erosion are needed in the culti- vatted areas. (Capability unit IIe-1, woodland suitability group 5, wildlife suitability group 1) Madison sandy loam, 6 to 1.0 ,percent slopes, eroded (MdC2).--This soil is on short to long side slopes in the aaplands. Its surface layor is 3 to 7 inches thick. In manq places tlae surface layer is a mixture of the remaining original surface soil a:n.d of material from the subsoil. Isa the less eroded shots the surface layer is dark -brown to brown sandy loaan, but the texture ranges to clay loam that has a reddish color in the more eroded spots. The subsoil is red to dark -red, friable clay loam to clay, and it is 1.0 to 30 inches tlricic. Included with this soil in mapping were some severely eroded areas wheic. the subsoil is exposed. The, e areas make pap from 5 to 25 percent of the acreage in the aalappiug unit. Infiltration is fair, and surface runoff is rapid. The laaza:.rd of further erosion is severe. This soil is difficult to keep in good tilth, but it can be worked throughout a fairy' `vide range of moisture content. A crust forms on tile, severely eroded spots after hard rains, however, and clods form if those areas tare worked when wet.. The crust a,nd the clods interfere with germination. As a result, stands of crops are poor and replanting of those areas ina`f be necessary. about three-fourths of the -acreage is in forest, and the rest is used chiefly for row crops and pasture. This soil is well suited to all the locally grown crops. Practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit IIIe-1, woodland suit- ability group 5, wildlife suitability group 1) Madison sandy loam, 10 to 15 percent slopes, eroded (MdD'`,. This soil is on narrow side slopes bordering upland dra.inageways. The surface layer is 3 to 7 inches tlhiek. In many plaices it is a mixture of the remaining original surface soil and of material from the subsoil. In the less eroded areas, the surface layer is dark -brown- to brown sandy loam, but ill the more, eroded spots the tex- ture ranges to clay loam that, has a reddish color. The subsoil is red. to dark -red, friable clay loam to clay that is 10 to 35 inches thick. Im Included with this soil in Mapping were some severely eroded shots where the subsoil is exposed. `.phase eroded areas maa:ke ill) from about 5 to 25 percent of ,the acreage iil tlaearrap�pirrg paint. Tnpiltaatton is fair, and surface runoff:' is very rapid. Tito hw aid of farther °eroslob. is Very severe. This soil is difficult to beep in good tilth, but it; can be worked throughout a fairly wide range of moisture content... crilst, forms on the severely eroded spots after hard reins, and clods form if those areas are worked when wet. The crust and the clods interfere with germination, As a result, stands of crops are, poor and replanting of the severely eroded ureas inay be necessary. )fir a<iicaa lly all of the acreage. is ill forest., but a sinal] acreage is in pasture or caaltivated crops, mainly row crops, This soil is well suited to all the locally grown crops, but very intensive. practices that effectively control runoff .and erosion are needed in the culti`,16�d areas. (Capability unit Ire -1, woodland suitability group 5, wildlife. suitability ;roup 1) Madison sanity loam, 15 to 25 percent slopes, eroded (MdE2).—,..rhis soil is on narrow side slopes bordering major upland drainageways. Its surface layer is 3 to 5 inches thick. In many places the surface layer is a rnix- ture of the remaining origigial surface soil and of mate- rial from the subsoil. In the less eroded areas, the surface layer is dark -brown to brown sandy loam, but; the texture ranges to clay loam that has a reddish color in some of the snore eroded spots. The subsoil is red to dark -red, friable clay loam to clay that is 10 to 24 inches thick. Included tenth this soil in mapping were some severely eroded spots -where the subsoil is exposed. These areas make up from 5 to 25 percent of the. acreage in the mapping unit. Infiltration is fair, and surface raanoff is very rapid. This soil is highly susceptible to further erosion. Practically all of the acreage is in forest. IV, here this soil has been cleared, however, it is suited to permanent hay or pasture. It is not suited to caaltivated crops. G` tpa- bilitN, unit; Vle-1, woodland suitability group 5, Nvildlifc suitability group 1) The Alantachie series consists of nearly I ,vel or gently sloping, deep, somewhat: poorlSr drained soaks in depres- sions of the Piedmont: and Coastal asta,l Plain uplands. These soils have formed in coarse loaany deposits of local allu- vium -washed from surrounding soils of the uplands. A seasomilly high water table is at a depth of about 2 feet. -Natur-a.l fertility and the content of organic matter are loss-, and permeability is moderate to moderately_ rapid. Tile available water capacity is anedium, and the shriaak- swell potential is low. These soils are frequently flooded, lent the floodivaaters remain for only a brief period, of time. Except, in areas that have received linie, the soils are medium acid. Response is fairly good if suitable applications of lime and fertilizer are made. In -Wake County Mantach.ie soils are not important, for farming. The areas are generally too small to be managed, as aa. field independent of the surrounding soils, and most of the acreage is ill forest. Where these soils have been 42 MMMMMMMMC• �I� Figure 6.—Grassed waterway through an area of Mantachie soils. cleared, they are used mostly for pasture or waterways (fig6)* Representative profile of a Mantachie sandy loam in a ep'o draw in a wooded area 1.3 miles southeast of U.S. High- way No. 64 on county road No. 2331, 1,000 feet northeast on a farm road, and 100 feet west of the farm road: Ar), ---O to 10 inches, dark grayish -brown (10YR 4/2) sandy loam; weak, medium, granular structure; very fri- able when moist; many fine and medium, woody roots; many fine pores; slightly acid; gradual, wavy boundary. B21-10 to 20 inches, dark yellowish -brown (10YR 4/4) sandy loam; common, medium, distinct mottles of grayish brown; weak, medium, granular structure; friable when moist; common fine and medium roots; common fine pores; medium acid; gradual, wavy boundary. B22g­20 to 29 inches, gray (N 5/0) sandy loam; common, medium, distinct mottles of pale brown; structure - less; very friable when moist; common, fine, woody roots; medium acid; gradual, wavy boundary. Clg-299 to 35 inches, gray (10YR 5/1) loamy sand; common, medium, distinct, brown mottles; structureless; very friable to loose when moist; common, fine, woody roots; medium acid; gradual, wavy boundary. 02g-35 to 45 inches +, gray (10YR 5/1) sandy loam; com- mon, medium, distinct mottles of pale brown; struc- tureless. The A horizon ranges from 4 to 20 inches in thickness, from dark brown or gray to dark grayish brown in color, and from sandy loam to silt loam in texture. The B horizons range from 10 to more than 40 inches in combined thickness, and those horizons are variable in color and texture. The colors range from gray or very pale brown to dark brown or dark yellow- ish brown mottled with gray. The texture ranges from sandy loam to light loam. The structure ranges from subangular blocky or granular to single grain and massive. The consis- tence is friable to loose. The profile of the Mantachie soils is more than 40 inches thick. Depth to hard rock ranges from 5 to 15 feet or more. Mantachie soils occur with Bibb, Chewacla, and Wehadkee soils. They ire better drained than the Bibb and `ehudkoe soils and are coarser textured than the Chewacla and lVehad- kee soils. Mantachie soils (0 to 4 percent slopes) (Me).—These soils are in depressions and draws in the uplands. Their surface layer is dark -brown or gray to dark grayish - brown sandy loam to silt loam 4 to 20 inches thick. The subsoil is 10 to 40 inches thick and ranges from gray or v r brown in color and from sandy loampale brown to dark am to loam in texture. It contains common gray mottles, Infiltration is good, and surface runoff is slow to medium. Flooding is frequent but of short duration. These soils are easy to keep in good tilth, and they can be worked throughout a wide range of moisture content. If suitable drainage is provided, these soils are well suited to most of the locally grown crops, but most of the acreage is in forest. Where the soils have been cleared, they are used chiefly for pasture or as sod waterways. (Capability unit Mw -2, woodland suitability group 4, wildlife suitability group 2) Mayodan Series The Mayodan series consists of gently sloping to mod- erately steep, well -drained soils that are deep or mod- erately deep over hard rock. These soils are on rounded divides that have a difference in elevation of about 50 feet between the highest and the lowest points. They occupy large areas in the western part of the county, where they have formed under forest. The material in which they formed has weathered from sandstone, mud - stone, and shale of Triassic age. The water table remains below the solum. Natural fertility and the content of organic matter are low. The available water capacity is medium, and perme- ability and the shrink -swell potential are moderate. Except in areas that have received lime, these soils are strongly acid. Response is good if suitable applications of lime and fertilizer are made. Mayodan soils are not important for farming. In this county most of the acreage is in forest. Representative profile of a Mayodan sandy loam in a; cultivated field 11/3 miles southwest of the, Apex Junior High School and 100 yards south of road: Ai).—O to 7 inches, grayish -brown (10YR 5/2) sandy loam; weak, medium, granular structure; very friable when moist; many fine, fibrous roots; few small quartz peb- bles; medium acid; abrupt, smooth boundary. B21t-7 to 11 inches, yellowish -red (5YR 5/6) clay loam; strong, fine and medium, subangular blocIcy struc- ture; firm to friable when moist, sticky and plastic when wet; thin, continuous clay films; strongly acid; clear, wavy boundary. B22t-11 to 18 inches, yellowish -red (5YR 5/8) clay; common, coarse, distinct, strong -brown (7.5YR 5/8) mottles; strong, fine and medium, subangular blocky struc- ture; firm when moist, sticky and plastic when wet; thin clay films; strongly acid; clear, smooth bound- ary. B23t-18 to 25 inches, yellowish -red (5YR 4/8) clay; many, coarse, distinct, strong -brown (7.5YR 5/8) mottles; strong, medium and coarse, subangular blocky struc- ture; firm when moist, sticky and plastic when wet; thin, continuous clay films; strongly acid; clear, smooth boundary. B3-25 to 40 inches, mottled red, strong -brown, and yellow sandy clay loam; moderate, fine and medium, angular blocky structure to massive; friable when moist, slightly sticky and slightly plastic when wet, medi- um, discontinuous clay films on vertical surfaces; strongly acid; clear, smooth boundary. C-40 to 48 inches, mottled red, yellow, strong -brown, and light -gray sandy loam from disintegrated sandstone of Triassic age; strongly acid. IATAKE COi7XTY, NORT11 CAROLINA Where the sounds is only 1S+ to 30 inches thick, a thin phase of the Alayodan st3ries is recognized. Followii'lg is a representative profile of as thud phase of Mayodan silt loam in a wooded area, one-half mile west of Morrisville and. 20 yards north of c('xl sty road No. 1002: 01-__2 inches to 0, uncipea nposed forest litter. A1_0 to 7. inch, dark grayish -brown (10ylt. 4/2) silt loans; weak, mediau'u, granular structure; very friable when moist; many fine, woody and fibrous roots; medium acid; abrupt, sawtooth boundary. A`d-1 to 4 inches, yellow (10YR 7/0) silt loam; weak, medi- um, granular structure; very friable when moist ; common, fine, woody and fibrous roots; strongly acid; clear, smooth boundary. BI -4 to 0 inches, redflish-yellow (T5YR C/G) heavy silt loam; weak, wedium, subangular blocky structure; friable when moist, slightly sticky and slightly pbwtle when wet; cowl -don, fine, woody roots, strongly acid ; clear, smooth boundary. B21t—c3 to 15 inches, yellowish -reit (5YR 5/8) silty clay loam; common, medium, distinct, reddish-yellow mottles; moderate, medium, subangular blocky structure; fri- able when moist, sticky and plastic when wet; very few thin clay films; few, fine, woody roots; strongly acid; clear, smooth boundary, B22t--15 to 20 inched, yellowish -red (5YR 5/6) silty clay loam; few, fine, prominent, red mottles; moderate, medium, subangular blocky structure; friable when moist, sticky and plastic when wet; common thin clay films; strongly acid; abrupt, smooth boundary. B3t---20 to 24 inches, yellowish -red (5YR 5/6) silty clay loam; common, medium, prominent, red mottles; moderate, medium, subangular blocky structure; friable when moist, sticky and plastic when wet; few clay films in vertical cracks; common small fragments of shale; strongly acid; abrupt. broken boundary. C--24 to 30 inches, red (2.5YR 1/8) silt loam from disinte- grated shale. 11-36 inches +, red, hard shale. The A, horizon ranges from 3 to 15 inches in thickness, from dark grayish brown or grayish brown to light yellowish brown or strong brown in color, and from sandy loam or gravelly sandy loam to sandy clay loam in texture. The Bt horizons range from 15 to 50 inches in combined thickness and from clay loam or silty clay loam to clay in texture. The color of the Bt horizons ranges from yellowish red to strong brown in 5YR to 7.5YR hues. Many* of those horizons have common mottles of brown and red. Typically, from 5 to 30 percent of the soil material throughout the profile consists of rounded and angular pebbles. .Wayodan soils have a. high content of exchangeable a.luminuna. The combined thickness of the A horizon and B horizons ranges from 20 to 50 inches. Depth to hard rock ranges from 3 to more than .15 feet. I1layodan soils occur with Granville, Creedmoor, and Appling soils. They are redder than the Granville soils, lack the very firm or plastic lower subsoil of the Creedmoor soils, and con- tain mora» exchangeable aluminum than the A.ppling soils. ayod.an sandy loam, 2 to 6 percent slopes (MfB)...-- This soil is on broad, smooth interstream divides in the uplands. Its surface layer is grayish -brown to yellowish - brown sandy loans 7 to 15 inches thick. The subsoil is yellowish -red to strong -brown, firm clay loam to clay that has common mottles of red and brown and is 26 to 50 inches thick. Included in mapping were a few places in which the slope is less than 2 percent. Infiltration is good, and surface runoff is mediuin. The hazard of erosion is moderate. This soil is easy to beep in good tilt.h and can be worked throughout a wide range of moisture content. .bout two-thirds of the acreage is cultivated or in pasture, and the rest is in forest or in other uses. The M cultivated areas are used chiefly for tobacco and cotton and to a lesser extent for other row crops, but thio sail is well suited to all the locally grown crops. Practices that efieetively control runoff and erosion are needed in the cultivated areas. (Capability unit He -1, woodland suitability group 5, wildlife suitability grouse 1) Mayodan sanely loam, 2 to 6 percent slopes, eroded (MfB2).---This soil is oil broad, smooth interstreani divides in the uplands. Its surface layer is 3 to 7 inches thick. In many places it is a mixture of the remaining original surface soil and of material froin the subsoil. In the less eroded areas, the surface layer is grayish -brown to light yellowish -brown sandy loam, but the color ranges to strong brown and the texture ranges to sandy clay loam in the more eroded areas. The su soil is 26 io 50 inches thick and consists of yellowish -zed to strong -brown, firm clay loans to clay, with common mottles of red and brown. Included with this soil in slapping were some severely eroded spots where the subsoil is exposed. These areas make up from 5 to lei percent of the acreage in the mapping unit. Infiltration is fair, and surface runof is inediurn, The hazard of erosion is moderate. This soil is difficult to beep in good tilth, but it can be worked throughout aL fairly wide range of moisture content. A crust forms oil the. severely eroded spots after hard rains, and clods form if those areas are worked. when wet. The crust and the clods interfere with germination. As ti, result, stands of crops are poor and replanting of the severely eroded areas may be necessary. An even stand of tobacco is hard to obtain. in the severely eroded shots. Plants in an uneven stand mature at, different times, which lzlakcs harvesting and curing of the crop difficult and reduces the quality of the tobacco. About two-thirds of the acreage is cultivated or in pasture, and the rest is in forest or in other uses. Wbera cultivated, this soil is used chiefly for row crops, espe- cially tobacco, but it is well suited to all the locally grown crops. Practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit Ile -1, woodland suitability group 5, wildlife suit- ability group 1) ayodan sandy loam, 6 to 10 percent slopes (MfFC!.-- This soil is on narrow side slopes in the uplands. It .IIa's a surface lawyer of grayish -brown to yellowish-browia sanely loam 6 to 12 inches thick. The, subsoil is 26 to 4,'� inches thick and is yellowish -reel to strong -brown, firm clay loam to clay, with common mottles of red and brown, Infiltration is good, and surface runoff. is rapid. The hazard of erosion is severe. This soil is easy to keep ilI goodtilth and can be worked throughout as wide range of moisture content. About one-third of the, acreage is cultivated or in pasture, and the rest is in forest: or in other uses. The cultivated. areas are. used chiefly for row crops, especially tobacco, but this soil is well suited to all the locally grown crops. Intensive Practices that effectively control runoff' and erosion are, needed in the cultivated areas. (Capability unit IIIe-1, woodland suitability group 5, -wildlife, suitability group 1) FV SOIL SURVEY Mayodan sandy loam, 6 to 10 percent slopes, eroded (MfC2).—_rhis soil is ora narrow side slopes in the uplands. Its surface layer is I to 6 inches thick. In many palaces the surface layer is a mixture of the remaining original surface soil and of material from the subsoil. In the less eroded areas, the surface laver is grayish -brown to light, yellowish -brown, sandy loam, but t& color ranges to strong brown and the texture ranges to sandy clay loam ill the more eroded spots. The subsoil is 26 t.o 4ri i€aches thick and consists of yellowish -red to strong-broNvnm , fir clay loam to Clay, with common mottles of red and brown. Included: with this soil in mapping were some severely eroded spots where the subsoil Is exposed. These aareas maake up from 5 to 25 percent of the acreage in the mapping unit. Infiltration is fair, and surface runoff is rapid. The hazard of further erosion is severe. This soil is difficult, to keep in good tilth., but, it can be worked throe o,hout a fairly wide mange of rnoist.ure content. A. crust forms on the severely- eroded spots rafter bard rains, and clods form if those areas are worked. ivh.en wet. The crust and the clods interfere with germination. As a result, stands of crops are poor and replanting of the severely eroded areas may be, necessary. An even stand of tobacco is hard to obtain. PhIlIts in an uneven stand mature at. different - times. This makes harvesting and curing of the crop difficult and reduces the quality of the tobacco. About one-third of the acreage is cultivated or in pas- ture, and the rest is in forest or In other uses. The culti- vated areas are used chiefly for row crops, especially tobacco, but this soil is well suited to all. the locally grown crops. Intensive practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit IIIe-1, woodland suitability group 5, wildlife suitability group 1.) Mayodan sandy loam, 10 to 15 percent slopes, eroded (!WD210 This soil is oil narrow side slopes bordering upland draina.geways. It is dominantly moderately eroded, but it is slightly eroded in places. In the mod- erately eroded areas, the surface layer is grayish -brown to light vello�vish.browvn sandy loans to strong -brown sandy clay loam. I to 6 inches thick. In the slightly eroded areas, the surface layer is grayish-browrn to yellowish -brown sandy loam 0 to 10 Inches thick. The subsoil is 26 to 40 inches thick and consists of yellowish - red to strong -brown, firma. clay loam to clay, w-ith corn-. mien mottles of red and brown. In marry places pebbles and oobblestones are ori the surface arae:[ in the surface, layer. Included with this soil in mapping were solve severely eroded spots where the subsoil is exposed. Infiltration is fair to good, and surface runoff is very rapid. The hazard of farther erosion is very seN ere. I'irhere this soil is only slightly eroded, it is easy to keep in good filth. Where. it is moderately eroded, it is difficult, to keep in good tilth, but it can be worked throughout a fairly wide range of moisture content. A crust forms on the severely- eroded spots after hard rains, and clods form if those areas are worked when wet. The crust and the clods interfere with germination. As a result, stands of crops are poor and replanting of those areas may be necessary. 'heist of the acreage is in forest, but a. small acreage is in pasture. Also, a small acreage is used, for row crops. This soil is well suited to all the locally grown crops. If it is cultivated, however, very intensive pr=actices that effecti.vel7 control runoff and erosion are needed. (Capa- bility unit; IWA., woodland suitability group 5, wildlife suitability group 1) Mayodan sanely loam, 15 to 25 percent slopes (MfE).— This soil is on narrow side slopes bordering major drain agew a,ys in the county. It is slightly or moderately eroded. In the slightly eroded aareas, tlra surface layer is grayish -brown to yellowish -brown sandy loanl 6 to 0 inches thick. Ill the moderately eroded areas, the surface layer is grayish --brown to light yellowish -brown sa- dy lo; In to stroim--brown sandy clay loam 4 to 0 inelae.s !hick. The subsoil is 20 to 36 inches thick and coxasists of yellowish -red to strong -brown, firm clary loam to claky, -with common mottles of red and brown. In many places pebbles and cobblestones are on the surface and in the sur- face laver. Included with this roil ill mapping Nvere. some severely eroded spots where the subsoil is exposed. Infiltration is fair to good, and surface runoff is very rapid. This soil is highly susceptible to further erosion. Most of the acreage is In forest, but a small acreage is in pasture. Where this soil has been cleared, it is suitable for pasture or perennial hay crops. It is not suited to cultivated crops. (Caapability unit `'Ie -1, woodland suit:- a.bility group 5, wildlife suitability group 1) Mayodan gravelly sandy loam, 2 to 6 percent slopes (MgB).—'Phis soil is oil broad, smooth interst.re.ain divides in the uplands. Its surface layer is 7 to 15 inches thick. It is grayish -brown to Qyellowish-brown gravelly sandy; loans that has a content of gravel of tai to 30 percent. The subsoil is 26 to 50 inches thick an(]. consists of ti ell.ow ish- red to strong -brown, firm clay loarn to claay... with- com- nion mottles of red and brown. Infiltration is good, and surface runoff is medium. The hazard of erosion is moderate. Because of the high con- tent of gravel, many areas of this soil are difficult to till, but tillage can be performed throughout a wide range of moisture content. About half of the acreage is cultivated or in paasture, ,and, t1le rest, is in forest or !it other uses. The ctrItiva.ted areas are used chiefly for row crops, especially tobacco and cotton, but this soil is well suited to all the locally grown crops. Practices that effectively control runoff and. erosion are needed in the cultivated areas. (Capability unit Ile-!, woodland suitability group 5, wildlife suit- ability group 1) Magravelly sandy loam, 2 to 6 percent dopes, eroded (M9B2). This soil is on broad, smooth interstrenin divides in the uplands. Its surface laver is .4 to 7 inches thick. !it many places it is a rxaixturo of the, re)till ining original nrface soil and of rnateriaal from the; saabsoil. In the less eroded areas, the surface layer iS g;rayishr brown to light yellowish -brown gravelly sandy- loam, but the color ranges to strong brown and the texture raazrges to gravelly sandy clay Ioam in the more eroded spots. I+ roma 15 to 30 percent of the surface layer is gravel. The subsoil is 26 to 50 inches thick and consists of yellowish - red to strong -brown, firm clay loamy to clay, with coni - mon mottles of red and brown. WAKE CC)LTI+ T7, NORTH CAROLINA Included with this soil, in niappin were some severely eroded spots. Those areas snake up from 5 to 25 permit of the acreage in the 'laxppin unit. Infiltration is fair, aiif surface .runoff is moderate. The hazard of further erosion is moderate. This soil is diffi- cult to beep in good. tilth, but it can be worked through- out a fairly wide range of moisture content. A crust forms on the severely eroded spots after hard rains, and clods form if those areas are worked when. wet. The crust and the clods interfere with germination. As <a result, stands of crops tyre poor and replanting of the severely eroded spots way be necessary. An even stand of tobacco is hard to olitai;in. Plants in an uneven stand mature at different times, which makes harvesting and curing of the crop diffcnit and reduces the duality of the tobacco. About half of the acreage is cultivated or in pasture, and the rest in forest_ or in other uses. The cultivated areas are used chiefly for row crops, especially tobacco and cotton, but this soil is well suited to all the locally grown crops. Practices that effectively control. runoff and erosion are needed in the cultivated areas. (C:aj?ability unit Ile -1, woodland suitability group 5, wildlife suit- ability group 1) Mayodan gravelly sandy loam, 6 to 10 percent slopes (MgQ.---This soil is on narrow side slopes in the uplands. It has a grayish -brown to yelloevish-brown. surface layer of gravelly sandy loam 6 to 12 inches thick. The content of gravel in the surface layer ranges from 15 to 30 per- cent. The subsoil is 26 to 45 inches thick. It consists of ,yellowish -red to strong -brown, firm clay loam to clay, «with common mottles of red and brown. Infiltration is good, and surface runoff is rapid. The Lazard of erosionn is severe. In many places the high con- tent of gravel makes this soil difficult to till, but tillage can be performed throughout a wide range of moisture content. About one-third of the acreage is cultivated, or in pasture, and the rest is in forest or ill other uses. The cultivated areas are used chiefly for row crops, especially tobacco and cotton, but this soil. is well suited to all the locally grown crops. Intensive practices that effectively control runoff and. erosion are needed in the cultivated areas. (Capability unit IIIe-t., ivoodland suitability group 5, wildlife suitability group 1) Mayodan gravelly sandy loans, 6 to 10 percent slopes, eroded (MgC`.2) This soil is on narrow side slopes in the uplands. Its surface layer is 4 to 6 inches thick and has a content of gravel rang.,ing from 15 to 30 percent,. In many places the surface layer is a mixture of the remaining original surface soil slid of material from the. subsoil. In the less eroded areas, it is grayish -brown to light yellowisli-brown gravelly sandy clay loam, but the color ranges to strong brown and the texture ranges to grav- elly windy clay in the more eroded spots. The, sub- soil. is 26 t.o 45 inches thick and consists of yellowish -red to strong -brown, firm clay loath to clay, with coronion mottles of red and brown. Included with this soil in mapping were some severely eroded spots. These male up from 5 to 25 percent of the aaereage in the mapping unit. Infiltration is fair, and surface runoff is rapid. This soil is difficult to keep in good tilth, but it can be worked is throughout as fairly wide range of inoisture content. A crust, forms, on the severely eroded spots after hard rains, and clods fours if those areas are workedwhen wet. The crust and the clods interfere with aerinin ation. As a result., stands of crops are poor and replanting of those areas may be necessary. Ali even standd of tobacco is hard to obtain, Plants in an uneven stand mature at different, tunes, whish snakes baarvesting and curing of the crop difficult and reduces the quality of the tobacco. About orae-thirdof the acreage is cultivated or ill pas- ture, and the rest is in forest; or in other uses. The culti- vated areas are used chiefly for row crops, especially tobacco and cotton, but this soil is well suited to all the locally grown crops. Where cultivated crops are grown, intensive piuctices that effectively control rauiofr and erosion are needed. (Capability unit IIle-1, woodland suitability group 5, wildlife suitability group 1) Mayodan silt loans, thin, 2 to 6 percent slopes (MyB).-- This soil is on smooth intersti•eam divides in the uplands. Its surface layer is dark grayish -brown to ,yellowish - brown silt loam 4 to 7 inches thick. The subsoil is 15 to 24 inches thick. It is yellowish -red to strong -.brown, firm silty clay loam to clay, with common red mottles. Included in snapping were some areas in which the slope is less than 2 percent. Infiltration is good, surface runoff is medium, and the hazard of erosion is moderate. This soil is easy to keel) in good tilth and can be worked throughout; a fa ii°ly wide range of moisture. content.. About half of the acreage is cultivated or ill pasture, and the rest is in forest. The cultivated areas are used chiefly for row crops, but this soil is suited to roost of the locally grown crops. Practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit IIe-2, woodland suitability grout) 5, wildlife suitability group 1) Mayodan silt loam, thin, 2 to 6 percent slopes, eroded (MyB2).----This soil is on smooth interstream divides in the uplands. Its surface layer is 3 to 6 inches thick. In many places it is a mixture of the remaining originaa,l surface soil and of material from the subsoil. In the less eroded areas, the surface layer is grayish -brown to yellowish - brown silt loam, but, the color ranges to strong brown and the texture ranges to silty clay loan) in the more eroded spots. The subsoil is 15 to 24 inches thick and con- sists of yelIowisli-red to strong -brown, farars silty clay loaan.1 to clay, with common mottles of red. Included with this soil in mapping were some severely eroded spots where the subsoil is exposed. These areas nlaake up from 5 to 25 percent of the acreage in the, mapping unit. Infiltration is fair, and surface runoff, is medium. The hazard of erosion is moderate. This soil is difficult to keel) in good tilth, but it can be worked throughout, a fairly wide range of moisture content. A crust forms on the severely eroded spots after hard rains) and clods form if those areas are worked when wet. The crust and the clods interfere with germination. As a result, stands of crops are Boor and replanting of those areas may be necessary. Where this soil has been cleared, it is used chiefly for row crops and pasture, but it is suited to most of the locally grown crops. About half of the acreage is culti- M, SUIT. SURVEY vatted or in pasture, and the rest is in forest. Practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit He -2, woodland suitability grow' 5, wildlife suitability group 1) :t6'layodan sin, loam, thin, 6 to 10 percent slopes (MyC).!rbis soil is on narrow side slopes 1n the uplands. The surface layer is dark grayish -brown to yellowish- brow-li silt loans 4 to 7 inches thick. The subsoil is 15 to 20 inches thick and consists of yellowish -red to strong - brown, firm silty clay loam to clay, with common red mottles. Infiltration is good, and surface runoff is rapid. Thea hazard of erosion is severe. This soil is easy to keep in good tilth and mn be worked throughout a fairly wide range of moisture content. Where this soil has been cleared, it is used chiefly for: row crops acrd pasture, but it is suited to most of the locally grown crops. Most of the acreage is in forest, but a small acreage is in other. eases. Intensive practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit IIIe-2, woodland suit- ability group 5, wildlife suitability group 1) 1Vlayodan silt loam, thin, 6 to 10 percent slopes, eroded (MyC2)_This soil is on narrow side slopes in the uplands. Its surface layer is 3 to 6 inches thick. In many places the surface layer is a mixture of the remainincr g original surface soil. and of material from the subsoil. In the less eroded areas, the surface layer is grayish -brown to yellolvish-brown silt loam, but the color ranges to strong brown and the texture ranges to silty clay loam in the more eroded spots. The subsoil is 15 to 20 inches thick and consists of yellowish -red to strong -brown, firm silty clay loans to clay, with common mottles of red. Included with this soil in mapping were some severely eroded shots where the subsoil is exposed. These areae make up from 5 to 25 percent of the acreage in the mapping unit. Infiltration is fair, and surface runoff is rapid. The hazard of further erosion is severe. This soil is difficult to beep in good tilth, but it can be worked throughout aa, fairly wide range of moisture content,. A crust, forms oil the severely eroded, spots after hard rains, and clods form if those areas are worked when wet. The crust and the clods interfere with germination. As a result, stands of crops are poor and replanting of the severely eroded spots may be necessary. HoA of the acreage is in forest, but a, small acreage has been cleared. This soil is suited to most of the. locally grown crops, but the cleared areas are used chiefly for row- crops and, pasture. Intensive practices than effec- tively control runoff and erosion are needed in the culti- vatoa areas. (Capability unit, Me -2, woodlaand suitabil- ity ,group 5, wildlife suitability group 1) IVlayodan silt loam, thin, 10 to 15 percent slopes (MyD).—This soil is on narrow side slopes bordering draina,geways in the uplan(ls. Sonne areas are slightly erodecl, and others are moderately eroded. In the slightly eroded areas, the surface layer is dark grayish -brown to yellowish -brown silt loam � to 6 inches thick. In the rnodera:tely eroded areas, the surface layer is 3 to 6 inches thick and ranges from grayish -brown to yellowish - brown silt loam to strong-h�-own silty clay loans. The subsoil is 15 to 18 inches thick and consists of yellowish - reel to strong -brown, firm silty clay loans to cla�Y, with common mottles of red. Include;.! with this soil in mapping were some severely eroded spots where the sub- soil is exposed, Infiltration is fair to good, surface runoff is very rapid, and the hazard of further erosion is very severe. Where erosion is only sl'ig'ht, this soil is easy to keep iii food Where here erosion is moderate, this soil is difficu t to keep in good tilth, but it can be worked throughout a fairly wide range of moisture content.. A. crust forms on the severely eroded spots after hard rains, and clods form if those areas are worked when wet. The crust avid the clods interfere with germination. 4s a. result, stands of crops are poor and replanting of those areas Ynay be necessary. This soil is suited to most of the locally grown crops, but practically all of the acreage is in forest. '`hese this soil has been cleared, it is used for row crops and pasture. Very intensive practices that effectively control runoff" and erosion arra needed ill the cultivated -areas. (Capabil- ity -unit, I re -2, woodland sl_iitaability group ai, wildlife suitability group 1) Norfolk Series The Norfolk series consists of nearly level to sloping, very deep, well -drained soils on Coastal Pham uplands in the southern part of the county. The soils are ora broad flats and on smooth, rounded divides that have a dif- ference in elevation of about 20 feet between the, highest and the lotivest points. They have formed under forest in Coastal Plain sediment. The water table remains below- the solum. Natural fertility and the content of organic matter are low. Permeability is moderate, the available, water cap ac- ity is medium, and the shrink -swell potential is low. Except in areas that have received Haire, these soils are strongly acid. Response is good if suitable applications_ of Time and fertilizer are made. In Wake County the Norfolk soils are important for farming. Most of the acreagee is cultivated or in pasture, but some of the acreage is in forest. Representative profile of a Norfolk loamy sand in a cultivated field 1?!r miles west of the New .Providence Church and 10 yards north of road App to 6 inches, grayish -brown (2.5Y 5/2) loa*ny sand; weak, medium, granular structure; very friable when moist; many fine, fibrous roots; many fine pores; strongly acid: nbmpt, sinooth boundary. ti2---6 to 15 inches, light yellowish -brown (2.5Y 6/4) loamy .,arid; weak, coai5e, granular structure; very friable when molst; many fine., fibrous roots; inany fine pores; ,strongly aaeld, abrupt, wary boundary. Bit -15 to 17 inches, yellowish -brown (10111 5/6) sandy clay lotani ; weals. medium, subangnlar blocky structure; friable when moist, sticky and slightly ppost-ic when wet; few, fine, fibrous roots; common fine pores; strongly acid; clear, wavy boundary. B` 1t-17 to 32 inches, yellowish -brown (10YR 5/8) ,-,nndy clay loam; weak, coarse, subangular blocky strtwture; tri- able when mol:st, sticky :uid slightly plastic wheaa wet; few, fine, fibrous roots; eoininon fine pores; few sosapuiotide nodules; few, :small, rounded quartz peb- bles; strongly acid; clear, v-aavy boundary. B22t-32 to 42 inches. yellowish -brown (10YR, 5/5) sandy cloy loan ; eoininon, inediuin, proininent, red inottles ; moderate, medium and coan>e, subangular blocky structure; friable when moist, sticky and slightly plastic when wet; 'few fine pores; thin, continuous clay films on pod surfaces; few, small, hard si-,squl- oxide nodules; Strongly acid; clear, smooth boundary. RU ­412 to 65 inches, pale -brown (10YR 6/3) sandy clay loam; common, medium, distinct mottles of yellowish brown, red, and light gray; moderate., medium, subangular blocky structure; friable when moist, and red mottles are Arm and brittle; few fine pores; thin clay films on ped surfaces; strongly acid; clear, wavy boundary. C-65 to 72 inches +, mottled red, pale -yellow, reddish-yellow, and light -gray sandy loam; massive (few platy struc- tures occur, probably because of the nature of the parent material) ; firm and brittle when moist; com- mon fine pores; sand particles appear to be cemented by oriented clay; medium acid. The A horizons range from 4 to 20 inches in total thickness and from dark grayish brown to pale yellow or strong brown in color. The B horizons range from 50 to 72 inches in com- bined thickness. Their texture ranges from sandy loam or loam to sandy clay loam that is less than 20 percent silt. The color of the B horizons ranges from yellowish brown to brownish yellow in 10'Y1t hues. In places the B horizons are mottled with red. The combined thickness of the A horizons and B horizons is more than 60 inches. Depth to hard rock is more than 20 feet. Norfolk soils (fig. 7) occur with Orangeburg, Faceville, Goldsboro, and Wagram soils. They are less red than the, Orangeburg and Faceville soils and have a coarser textured subsoil than the Faceville soils. The Norfolk soils are better drained than the Goldsboro soils and have a thinner surface layer than the Wagram soils. Norfolk loamy sand, 0 to 2 percent slopes (NoA).— This soil is on broad, flat interstream divides in the uplands. The surface layer is dark grayish -brown to pale - yellow loamy sand 8 to 20 inches thick. The subsoil is yellowish -brown to brownish -yellow, friable sandy loam to sandy clay loam and is 50 to 72 inches thick. In many places this soil contains tin incipient, discontinuous hori- zon, with plinthite. Infiltration is zood, and surface runoff is slow. This soil is easy to ke-ep, in good tilth and can be worked throughout a Wide range - o f moisture content. It has no u limitations to intensive use and no major hazards if it is farmed intensively. Practically all of the acreage is cultivated or in pas- ture., but a small acreage is in forest. The cultivated areas are used chiefly for row crops, especially tobacco and cotton, but this soil is well suited to all the locally grown crops. (Capability unit I-1, woodland suitability group 6, wildlife suitabi'lity group 1) Norfolk loamy sand, 2 to 6 percent slopes (NoB).— This soil is on broad, smooth interstream. divides in the uplands. Its surface layer is dark grayish -brown to pale - yellow loamy sand 8 to 20 inches thick. The subsoil is yellowish -brown to brownish -yellow, friable sandy loam to sandy clay loam 50 to 72 inches thick. In many places this soil contains an incipient, discontinuous horizon, with plinthite. Infiltration is good, and surface runoff is medium. The liazard of erosion is moderate. This soil is easy to keep in good tilth and can be worked throughout a wide range )f moisture content. Practically all of the acreage is cultivated or in pas- tUre, and only a small acreage is in forest. This soil is well suited to all the locally grown crops and is used -hiefly for row crops, especially tobacco and cotton. Practices that effectively control runoff and erosion are M Figure 7—Profile of a Norfolk loamy sand. needed in the cultivated areas. (Capability unit Ile -1, woodland suitability group 6, -wildlife suitability group 1) Norfolk loamy sand. 2 to 6 percent slopes, eroded (NoB2).—This soil is on broad, smooth interstream divides in the uplands. Its surface layer is 4 to 8 inches thick. In many places the surface layer is a mixture of the remain- ing, original surface soil and of material from the subsoil. In the less eroded areas, the surface layer is grayish - brown to pale -yellow loamy sand, but the color ranges to strong brown and the texture ranges to sandy clay loam in the more eroded spots. The subsoil is yellowish -brown to brownish -yellow, friable sandy loam to sandy clay loam 50 to 72 inches thick. In many places this soil con- tains an incipient, discontinuous horizon, with plinthite. Included with this soil in mapping were some severely eroded spots where the subsoil is exposed. These areas make up from 5 to 25 percent of the acreage in the mapping unit. 0 SOIL 'SURVEY Infiltration is fair, and surface runoff is inedium. Tho hazard of further ercasioll is nloder%te. This soil is diffi- cult to keep, in good tilth, but it can be worked through- out a fairy w1de stage of moisture content. A craist forins on the severely eroded spots after hard raiaa7, and clods forin if thoso areas are ,worked AN -hen wet.. The crust and the clods ilaterfere with geiniiii,ifloaa. As a result, stands of crops are poor and re lantin, of those areas may be necessaa sy..� n even stand of to acc.o is hard to obtain. Plants in an uneven stand mature at different tithes. This ma'l'tes harvesting and curiaag of the crop difficult and red ices the quality of the tobacco. This soil is well suited to all the locally grown craps, and it is used, chiefly for row crops, especially tobacco and cotton. Dart of the acreage is ill pasture, however, and a asinall aac,rettge is in forest. Practices that efl`ectively control runoff and erosion are needed in the cultivated areas. (Capability unit Ile -1, woodland suitability group €3, wildlife, suitability group 1) Norfolk loamy sand, 6 to 10 percent slopes (NoC).-- This soil is on Dalrrow. side slopes in the uplands. The surface layer is Clark grayish -brown to pale -yellow loamy Sand 8 to 20 inches thick. The subsoil is yellowish -brown. to bro%vnisli-yellow, friable sandy loan) to sandy clay loins 50 to 60 inches thick. In many places this soli con- tains in incipient and discontinuous liorizola, with plinthite. Infiltration is good, and surface runoff is rapid. The hazard of erosion is severe. This soil is easy to keep In good tilth and can be worked throughout a wide range. of moisture content. About three-fourths of the acreage is cultivated or in pasture, and the rest, is in forest and in. other uses. This soil is Nvell suited to all the locally growvn crops, but the cultivated areas are used chiefly for row crops, especially tobacco and cotton. Intensive practices that effectively control runoff and erosion are needed in the cultivated areas. ( Capability unit IlIe-1, woodland suitability group 6, wildlife suitability group 1) Norfolk loamy sand, 6 to 10 percent slopes, eroded (NoC2).---This soil is on narrow side slopes in the. uplands. Its surface layer is I to G inches thick. In many places the surface layer is a mixture of the remaining original surface soil and of material from the subsoil. In the le,,, eroded areas, the surface layer is greyish -brown to pale - yellow loalny sand, but, the color ranges to strong brown and the texture ranges to sandy clay loam in the, severer eroded spots. The subsoil is yellowish -brown to brownish - yellow, friable sandy loam to sandy clay loarn that, is JO to 60 inches thiels. In many places this soil contains all incipient, discontinuous hoi°izon, with plinthite. Included with this soil ill ina.pping were solace spots that, are eroded to the extent that the subsoil is exposed. These areas occupy from to `?5 percent, of the acreage in the mappiaag unit. Infiltration is fair, aand surface runoff is rapid. The hazard of .further erosion is severe. This soil is difficult to keep in good tilth, but it can be worked throughout a fairly vide range of moisture content. A crust, forms on the severely eroded spots after hard rains, and clods form if those areas are worked when wet. The crust, and the clods interfere with germination. As a result, stands of crops are poor and replanting of those areas may be necessary. Aar even stand of tobacco is hard to obtain. Plants ill all uneven stand nlature altdifferent tunes, v -Mich niaakes harvesting and curing of the crop difficult and , reduces the quality of the tobacco. About three-fourths of the acreage is cultivated or ill pasture, and the rest- is in forest or in other uses. This oil is well suited to all. the locally growls crops, but the cultivated areas are used. chiefly for ro-oc crops, especially tobacco and cotton. Intensive practices that effectively control runoff and erosion are needed in the eultivaated areas. (Capability unit IIle-1, woodland suitability group 6, wildlife suitability group 1) The Orangeburg series consists of gently sloping and sloping, very deep, well -drained soils on Coastal Plain uplands in the. southern M, rt of the county. These soils are oh broad, smooth, rounded divides that have a dif- ference in elevation of about, 20 feet between the highest, aanl the 'lowest points, They have formed under forest in Coastal Plain deposits. The water table remains below the soluin. Natural fertility and the content of orgaide niaa.tt:er are logy, and permeability is moderate. The available agater capacity is medilun, and the shrink-sw-ell potential is love. Except in areas that have received lune, these soils are lne.dium acid to strongly acid. Response is good if suit- able applications of lime and fertilizer are made. The Orangeburg soils of Wake County are. of only aninor llllportance for farming. Most of the acreage is cultivated or in pasture, but some is in forest:. ]representative profile of an Orangeburg loainy sand hi a cultivated field one-half mile north of Paart:ins fond and 50 yards east of the road.: Ala -0 to 8 Niches, gra.ylalh-brown (10YR 5;2) loamy sand; weak, fine, granular structure; very friable when moist; nredium acid; clear, cinoGth boundary. A2-8 to 12 inches pale—brown (10YR 6/3) loamy sand, weak, fine, granular structure; very friable when anoist; medlum acid; clear, smooth boundary. B21t---12 to 19 inches, reddish-yellow (5YR 6/8) sandy clay loam ; moderate, medium, subangular blocky struc- ture; friable when moist; strongly acid; gradual, smooth boundary. B22t-----1(3 to 26 inches, yellowish -red (5YR 5/8) sr111dy clay learn; moderate, medium, hubaangulnr blocky struc- ture; fri€able when moi.St; Strongly acicl ; gradual, 4anooth boundary. 1'23t-26 to 50 inehes, y'elloawis,h-red (5YR 5/8) sandy clown loam ; co,nnion, medium, distinct, 1wowvnish-yellow mottles; modernte. medium, subangular blocky .st:rue- ture; friable when moist; strongly acid; gradual, smooth bmn(l ary. 133-50 to 66 inches, red (2.5YR 5/6) sandy loam that con- tains pockets of yellow (10YR 7/8) sandy clay loam; moderate, medium, snbangulaa° blocky straacture; fri- able when moist; strongly acid: gradual,, diffuse boundary. 0---66 to 72 inches + mottled red, yellowy, and gray loamy sand; loose when moist; strongly acid. The A horizons range from 6 to 20 inches in combined thick- ness and from grayish brown or pale yellow to light browvraish gray or olive brown in color. The 13 horizons range from 50 to more than 72 inches in combined thickness and from sandy loam to sandy clay loam in texture. Their color rangers from reddish yellow to reel or yellowish red or strong brown in 2.5YR to 7.5YR hues. The combined thickness of the h. bori- WAKE COUNTY, NORTH CAROLINA zoos and B horizons is greater than 60 inches. Depth to hard rock Is more than 20 feet. Orangeburg soils incur with Norfolk and Faceville sons. They are more reddish than the Norfolk soils and have a coarser textured subsoil than the Faceville soils. Orangeburg loamy sand, 2 to 6 percent slopes fOrB).— This soil is on broad, smooth interstream divides in the uplands. Its surface layer is grayish -brown, light brownish -gray, and pale-yello-A, to olive -brown loamy sand 8 to 20 inches thick. The subsoil is red to yellowish - red and strong -brown, friable sandy loam to sandy clay loam that is 50 to 72 inches thick (fig. 8). In many places this soil contains an incipient, discontinuous horizon, with plinthite. Included with this soil in mapping were a few places where the slope is less than 2 percent. Also included were some spots where gravel is on and in the surface layer. Infiltration is good, and surface runoff is medium. The hazard of erosion is moderate. This soil is easy to keep in good tilth and can be worked throughout a wide range of moisture content. This soil is well suited to all the locally growncrops, i and practically all of the acreage is cultivated or n pas- ture. The cultivated areas are used chiefly for row crops, especially tobacco and cotton. Practices� that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit IIe-1, woodland suitability group 6, wildlife suitability group 1) Orangeburg loamy sand, 2 to 6 percent slopes, eroded (OrB2).—This soil is on broad, smooth interstream divides in the uplands. Its surface layer is 6 to 8 inches thick. In many places the surface layer is a mixture of the original surface soil and of material from the subsoil. In the less eroded areas, the surface layer is grayish -brown to light - brown loamy sand, but the texture ranges to sandy clay loam and the color is reddish in the more eroded spots. The subsoil is red to yellowish -red or strong -brown, fri- able sandy loam to sandy clay loam that is 50 to 72 inches thick. In many places this soil contains an incipient, dis- continuous horizon, with plinthite. Included with this soil in snapping were some areas where gravel is on the surface and in the surface layer. Some severely eroded spots occupy from 5 to 25 percent of the acreage in the nil, ng unit. Infiltration is fair, and runoff is medium. The hazard of further erosion is moderate. This soil is diffi- cult to keep in good tilth, but it can be worked through- out a, fairly wide range of moisture content. A crust. forms on the severely eroded spots after hard rains, and clods form if those areas are worked when wet. The crust and the clods interfere with germination. As a, result, stands of crops are poor and replanting of those areas may be necessary. Ali even stand of tobacco is hard to obtain. Plants in an uneven stand mature at different times, and this makes harvesting and curing of the crop difficult and reduces the quality of the tobacco. Practically all of the acreage is cultivated or in pas- ture, but a small acreage is in forest. This soil is well suited to all the locally grown crops, especially tobacco and cotton. Practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit IIe-1, woodland suitability group 6, wildlife suit- ability group 1) M Figure 8.—An Orangeburg loamy sand to a depth of 4 feet. Orangeburg loamy sand, 6 to 10 percent slopes, eroded (0rC2).—This soil is on narrow side slopes in the uplands. In about three-fourths of the acreage, it is mod- erately eroded. In the rest it is slightly eroded or severely eroded. The severely eroded spots make up from 5 to 25 percent of the acreage in the mapping unit. In many places the surface layer is a mixture of the remaining original surface soil and of material from the subsoil. In the severely eroded spots, the subsoil is exposed. In the slightly eroded areas, the surface layer is grayish -brown to light -brown loamy sand that is 6 to 8 inches thick, but the texture ranges to sandy clay loam and the color is reddish in the severely eroded spots. The subsoil is 50 to 60 inches thick and is red to yellowish -red and strong - brown, friable sandy loam to sandy clay loam. In many places this soil contains an incipient, discontinuous hori- zon, with plinthite. Included in mapping were some areas where gravel is on the surface and in the surface layer. 50 SOIL SURVEY Infiltration is fair, and surface runoff is rlapid. Tlie liazard of further erosion is severe. This soil is difficult to keep in good tilth, but it can be worked throughout a wide range of moisture content.. A crust forms on the severely eroded spots after hoard rains, and clods form if those areas ,are worked when wet. The crust fl d the clods interfere with ,'or ninaa:tioti, aSs a result, strmds of crops a.re. poor and replanting of those areas may be necessary. An even stand of tobacco is hard to obtain. Plants in an unei-en stand nialure, at different times, and this makes harvesting and raring difficult and reduces the quality of the tobacco. .About three-fourths of the acreage is cultivated or in pasture, and the rest is in forest, or in other uses. This soil is well suited to all the locally grown crops. The cultivated areas tire used chiefly for row crops, especially tobacco and cotton. Intensive practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit IIIe-1, woodland suitability group 6, wildlife'suitability group 1) PinkstGn Series The Pinkston series consists of gently sloping to steep, moderately deep, somewhat excessively drained soils in fairly small areas on Piedmont uplands in the western part of the county. These soils are on side slopes and on rounded divides that have a difference in elevation of about 75 feet between the highest and the lowest points. They have formed under forest in material that, weath- ered from sandstone and shale of Triassic age. The water table remains below the solum. Natural fertility and. the content of organic matter are low, and permeability is moderate to moderately rapid. The available water capacity and the shrink -swell po- tential are low. Except in areas that have received lime, these soils are strongly acid. Response is fairly good if suitable applications of lime and fertilizer are made. The Pinkston soils of 'make County are, not important for farming. 191ost of the acreage is in forest.. Representative profile of a Pinkston sandy loam in at cultivated field three-fourths of as mile southwest of the entrance to Raleigh-Durham :'airport, one-fourth of a, mile west and south on a farm road, and 50 yards south of road: Ap-0 to.5 inches, brown (10YR s`/3) sandy loam; ,venk. fine, granular structure; very friable when moist; common quartz pebbles; medium acid; clear, wavy boundary. 132 —:5) to 17 inches, yellowish -red (NYR 5/6) Sandy loam; common, medium, light yellodvish-brown and pale - brown mottles: weak, medium, subangular blocky structure; quartz gravel makes up vat percent of hori- zon, by volume; friable when moist,, strongly acid; gradual boundary. 133---17 to 25 inches, yellowish red (5YR 5/6) sandy loam; common, medium, distinct, pinkish -gray and stron:- brm,vu mottles; structureless; very friable when moist; quartz gravel makes tap 35 percent of horizon, by volume; strongly acid; gradual boundary. C-25 to 36 inches +, partly weathered sandstone that has a texture of gravelly sandy loam; very strongly acid. The A horizon ranges from 4 to 10 inches in thiekness and from pale brown to dark brown in color. The B horizons range from 5 to 30 inches in combined thickness. Their color ranges from yellowish brown to yellowish red in 10111 to 5YR hues. The texture of the B horizons ranges from loalra to sandy loam, and their strneture ranges from xveaak, fine, subangular blocky to mmadve. The Cl horizon is aingle grain or massive. Depth to hard raxk manges from 2 to 3 feet :Pinkston soils occur with Louisburg, Mayodan, and Gran- ville soils. They contain less weatherable minerals than tine Louisburg wily, and they haven coarser textured subsoil than the Mayaaslxn and Granville soils. Pinkston sandy loath, 0 to 10 percent slopes (PVC;.— This soil is on small ridges and side slo es in the uplands. Its surface layer is pale -brown to darkrowra sandy losam. 4 to 10 inches thick. The subsoil is 5 to 30 inches thick and consists of yello-vv sh-brown to yellowish -red, very friable or friable sandy loam to sandy clay loam. Included with this; soil in mapping were some areas that are moderately eroded. Also included were some areas where 20 to 50 percent of the surface is covered with gravel and from 20 to 50 percent, of the surface layer consists of gravel. Infiltration is good, and surface runoff is medium to rapid. The hazard of erosion is very severe. This soil is easy to keep in good tilth and can be worked throughout a wide range of moisture content. About two-thirds of the acreage is in forest, and the rest is cultivated or in pasture. This soil is fairly well suited to many of the locally grown crops. Where it, is cultivated, however, very intensive practices that effec- tively control. runoff and erosion .are necessary. During rainy seasons, this soil is subject to leaching of mobile plant nutrients because of its coarse texture. It is drough- ty during dry seasons. (Capability unit Ike -3, woodland suitability group 12, wildlife s€aitability group 4) Pinkston sandv hang, 10 to 45 percent slopes (PkF}_ This soil is on side slopes in the uplands. Its surface layer is pale -brown to dark -brown sandy loam 4 to 8 inches thick. The subsoil is 5 to 20 inches; thick acid con- sists of yellowish -brown to yellowish -red, very friable or friable sandy loam to sandy clay loam. Included �vith this soil in mapping were some areas that are moderately eroded. Also included were some areas where from 20 to ijo percent of the surface is covered with gravel and from 20 to 50 percent of the sur. - face. layer consists of gravel. Infiltration is good. §urface runoff is very rapid. Practically all of the acreage is in forest. Because of the steepness of the slopes and the shallowness of the sub- soil, this soil should not be cleared. ( Capability unit 'Ile 1, woodland suitability group 12, wildlife suit- ability group 4) Plummer Series The Plummer series consists of nearly level, deep, poorly drained soils on uplands of the Coastal Plain. These soils occupy small areas in depressions in the south- ern part of the county, where the difference in. elevation is about 5 feet between the highest and the lowest points. The seasonally high water table is at the surface. Natural fertility is very low, and the content of organ- ic Inatter is low. Permeability is rapid, and the available water capacity and the shrilik-swell potential are low. Flooding is frequent., and the floodwaters remain for a long period of time. Except in areas that have received lune, these soils are strongly acid. Where proper drain- age is provided, response is moderate if suitable appli- cations of lime and fertilizer are made. WAKE COUNTY, NORTH CAROLINA Plunalner soils are lio6t d in suitability for crops, and they are not, important. for farming. -Most of the acreage is in forest, but a small nereage is In pasture. Representative profile of Plummer sand in a pasture 1.1 iniles south of Holland station, 1,300 yards northwest an a farm road, and 15 yards east of roach: 02--1 inch to 0, very dark brown (10YR 2/2) decomposed grass, creeds, anti other litter; medium acid. Ap--O to 4 inches, very dark brown (10YR 2/2) sand; strue- tureless; very friable when moist; many fine and medium, fibrous roots; many fine pores: medium acid ; clear, smooth boimdary. Alg--4 to 11 inches, mrit:t.jed dark -,gray (10YR 4/1) and gray (10YR 6/1) sand; structurele�s; very friable when moist; common, fine, fibrous roots; anany fine pores; medium acid; clear, irregular boundary. A21g--11 to 36 inches, gray (10YR 6/1) sand; very few, fine, distinct, very pale brown stains of organic matter; structureless; very friable when moist; few, fine, fibrous roots; inany fine pores; some ,sand grains are coated, but many are uncoated; medium acid; clear, smooth boundary. A22g-36 to 50 inches, light -gray (10YR 7/1) sand; structure - less; louse when moist; sand grains are uncoated; various feldspar colors stand out among the light -gray quartz sand grains; few, fine, subrounded quartz peb- bles; medium acid. Btg--50 to 60 inches, gray (10YR 6/1) sandy loam; common, medium, distinct mottles of brownish yellow; weak, medium, subangular blocky structure; friable when moist; strongly acid; gradual, wavy boundary. Cg -60 to 72 inches -l-, gray (10YR 6/1) loamy sand; Arne- tureless ; very friable when moist; strongly acid. The A horizons range from 40 to 60 inches in combined thickness and from very dark brown to gray or black in color. In many places the 1 horizons are mottled with gray or dark gray. The Btg horizon ranges from 10 inches to more than 40 inches in thickness. Its texture is sandy loam to sandy clay loam, and its color is gray of 10YR lane, mottled with brown- ish yellow. The combined thickness of the A, and B horizons is 60 inches or more. Depth to hard rock is 20 feet or more. Plummer soils occur with Rains soils, but they have as thicker surface layer than those soils. Plummer sand (0 to ._), percent slopes) (Ps). This is ,he only soil of the Plummer series mapped in Wake Jounty. It is in Lapland depressions. The surface, layer is aero dark brown or gray to black sand 40 to 60 inches -hick. The subsoil is light -gray, very friable sandy clay oaln to sandy loans 10 to 40 inches thick. Infiltration is good, and surface runoff is slow to ao.11ded. Wetness and surface ponding are severe hazards o crops. Where, adequately drained, this soil is easy to peep in good tilth and can be worked throughout .1 wide range of moisture content. I'racticall-V all of the acreage is in. forest, but if it is :aroperly drained, this soil can be, used to grow a few ?erennial crops that are suitable for grazing. Both sur- Eace and subsurface, drainage are needed if cultivated ,cops are grown. (Capabili.ty unit lVw--:l, woodland Suitability group 8, wildlife suitability group 3) The Resins series consists of nearly level, very deepq )oorly drained soils on uplands of the Coastal Plain. rhese soils are in depressions where the dilerealee in letvatioll is about 5 feet between the highest and the low- est points. These soils are in the southern. Bart of the ,oaanty, where they occupy both large and shall areas. 51 They have formed under forest in (coastal Plain deposits. A seasonally hilgh water table is at the surface. Natural hrtilsty is low. The content of organic matter is medium, and permeability and the shrink -swell po- tential are moderate. Flooding is frequent, and the flood- waters stay on the surface for a, long time. Except, in areas that, have, received lune, these soils are very strongly acid or strongly acid. ""There the soils are properly= drained, response is good, if suitable applications of lime and fertilizer are made. The ][tains soils of Wake County are of only minor importance for farming. Most of the acreage is in mixed hardwoods and pines, but ta, small acreage is in pasture or in cultivated crops. Representative profile of Rains fine sandy loam in a. cultil ated field 1.7 miles south of Willow Springs and 100 yards west of road Ap---O to 8 inches, dark grayish -brown (10YR 4/2) fine sandy loath; weak, medium, granular structure; very friable when moist; common, fine, fibrous roots: inany fine pores; medium acid; clear, smooth boundary. B21tg-8 to 13 inches, grayish -brown (10YR 5/2) sandy clay loam; common, medium. distinct, yellowish -brown mottles; areal:., fine and medium. subangular blocky structure; friable when moist, sticky and slightly plastic when wet; fess, fine, fibrous roots; many fine pores; thin clay films on ped surfaces; strongly acid; clear, wavy boundary. B22tg-13 to 22 inches, grayish -brown (2.5Y 5/2) .sandy clay loam; common, medium, distinct, yellowish -brown mottles; weals, medium, subang alar blocky structure; triable when moist, sticky and slightly plastic when Wet; few, fine., fibrous roots; many fine pores; thin clay films on ped surfaces; strongly acid; clear, wavy boundary. B23tg--22 to 28 inches, gray (10YR 0/1) heavy sandy clay loaiu ; common, medium, distinct, yellowish -brown mottles; weak, medium, subangular blocky structure; friable when moist, sticky and slightly plastic when suet; many fine pores; medium clay films on ped sur- faces; very strongly acid; clear, irregular boundary. Mug -28 to 65 inches, gray (10YR 5/1) sandy clay loans; many, medium, prominent, strong -brawn mottles; weak, coarse, subangular blocky structure tending to massive; strong -brown mottles are slightly brittle and are friable when moist; gleyed mottles etre friable when moist and are slightly sticky and slightly plas- tic when wet; strongly oriented clay films in cracks; few, small, romided pebbles; very strongly= acid. C, _05 to 72 inches +, gray (10YR 5/1) loamy saand; st.ruc- tureless; friable when moist; very strongly acid. The Ap horizon ranges from 6 to 20 inches in thickness and Froin very dark gray to grayish brown or dark grayish brown in color. The B horizons range from 40 to 60 inches or more in combined thickness and from sandy loam to clay loam in texture. The color of the B horizons ranges from gray to grayish brown las JOYR to 5Y hues, and these horizons tare mottled with yellow or brown in many places. The combined thickness of the A anis D horizons is more than 60 inches. Depth to hard rock is 20 feet or more. Rains soils occur with Lynchburg and Plummer sols. They are . ore poorly drained than the Lynchburg soils and have as thinner surface layer than the Plunimer soils. Mains fine sandy loam (0 to 2 percent slopes) (Ra):— This soil is iia depressions in the uplands. It is the 0111.�• Rains soil snapped in lVake County. The surface .layer is very dark gray to grayish -brown fine sandy loam 6 to '?0 inches thick. The subsoil is 10 to 60 inches thick and con- sists of gray to ,grayish -'brown, friable sandy loam to clay loam, with c.ouLmon mottles of yellow and brown. W& SOIL SURVEY Included with this soil in mapping were a few areas where the subsoil. is clay. Also included were a few ureas of a \-eT`y poorly d�~wined soil Haat ha a surface la-yer of lotaln. Infiltration is good, and surface runoff is slow to pondcd. wetness Falai surface pollcdizlg are severe hazards to crops. JVhere this Soil is ndequately drained, it is easy to keep in goodtilth and can be worked throughout a wide range of moisture, content. If this soil is properly drained, it is well spited to malazy of the locally ,z°or,crops. Both surface and sub- y,salrface drainage* are needed, however, if caaltivated crops are grown. %fort, of the acreage is in forest, but as small acreage is cultivated or ill pasture. (011mbility emit II111-3, woocdlaud suitability group i, wildlife suit- ability group 3 ) Roanoke Series The Roanoke series consists of nearly level, deep, poor- ly drained soils that, occupy large areas oil low- stream terraces. These soils are in all parts of the county near the large, streams, and they Have formed under forest in allzlvial deposit. A seasonally= high water table is It the Su mace. Natural fertility and the content of organic matter are medium, permeability is slow, and the available water capacity is medium. The shrimp -swell potentiaal is high to moderate. Flooding is frequent,, but, the floodwaters re- main for only a. short time. Except in areas where lime has been applied, these soils are strongly acid. Where. proper drainame is provided, respoaase. is fairly good if suitable applications of lune and fertilizer are made. In Wake County the Btoa,noke soils are not important for farming. Most of the acreage is in mixed hardwoods and some pines, but a small acreage is cultivated or in pasture. Representative profile of Roanoke fine sand barn in a wooded area 0.0 of a. mile southwest of Plymouth Church oil ai fame road, and 100 yards southeast of the farm road: 01-2 inches to 1 inch,erndecoalaposeal forest litter. 02-1 inch to 0, decomlxa,vil forest. litter. Al -0 to 7 inches, dark groyNb-bi•ovrn (10YIt 4/2) hale Sandy loam ; few, medium, distinct, brown mottles; weal:, coarse. granular Ftr nc Luse : very friable when inoiSt ; many fine and medium, ffiarous root's .and fell', large woody roots; many fine pores=- slightly acid; clear, wavy boundary. A2-7 to 11. inches, grayish -brown (ioyr 5/2) fine sandy losuaa; maiay, coarse, distinct, light brownish- gray (10YR 0/2) mottles; weal:, coarse, granular struc- ture; very friable when moist, slightly brittle; fear, fine, woody roots; many fine pores; slightly acid; clear, 4moath boundary. 13eta--11 to 1ra inches, gray (10YT1 6/1) sandy clay loam; common, medium, distinct, brownish -yellow and ,few-, fine, prominent, strong -brown inottles ; moderate, coarse, subangular blocky structure; firm when moist, slightly sticky and slightly plastic when wet; few, fine, woody roots; common fine pores; inedium clay films oii ped surfaces; medium acid; clear, wavy boundary. B21tg 15 to 22 inches, gray (10Y1t 1/1) clay; common, medium, distinct, y cllowish-brown and few, medium, prominent, yellowish -red ,mottles,; very coarse, pris- matic primary structure breaking to strong, coarse, angular blocky structure; very firm when moist, Sticky and plastic when wet, many ilne, woody roots in vertical cracks; thick clay films on ped surfaces; strongly acid; gradual, wary boundary. B22tt 12 to 31 inc• ies, gray (1oYlt 5/1) heavy clay lchun ; few, fine, distinct, yellow mottles; very coarse, pris- anatic primary structure breaking to strong coarse, angular bloc=ky ,structure; very firm when moist; sticky and plastic when wet; few, fine, woody roots in vertical cracks; thick clay films on ped surfaces; strongly acid; gradual, wavy boundary. B3tg-31 to 38 inches, gray (10Y1t fi/I) sanely clay laarn; few, fine and medium, distinct, yellowish -brown inot- tles ; weak, coarse, angular blocky structure; firin when icroist, sticky and plastic when wet; thin, dis- continuous clay films on ped qurfaoes; medinin acid; gradual, wavy boundary. Clg-38 to 42 niches, grayi:sli-brown (1.0YTi. 5/2) sandy loam mat sive; hard in place; friable when moist, slightly sticky and slightly plastic when wet; slightly acid; Clear, wavy boundary. C2,--42 to 4¢i inches -F, gray (10Y12 6/1) ,4andy loam; fess, fine, distinct, olive mottles; massive; friable w -hen moist, slightly sticky aqui slightly plastic w hen wet; slightly acid. The A horizons; range from 6 to 20 inches in combined thickness and from dark gray to grayish brown or dark grayish brown in color. The B horizons range from 20 to 30 inches in combined t-hic_•kness and from sandy clay loam to clay in texture. The color of the Tit horizons is grray in 2.rrY and IOYR hues. In many places the Bt horizons are mottled with yellow and brokvn. in many are2s the lower boundary of the, B3tg horizon separates that horizon from a stone line, sand, or unconsolidated sand and clay. The combined thick- ness of the A horizons and B horizons ranges from 30 to 40 inches. Depth to hard rock is more than ri feet and commonly is more than It; fleet. Roanoke soils occur with waliee and. Welaadkee soils. They are more poorly drained than the 'Wahee soils and have legs sand in their saibsoil than the Wehadkee soils. Roanoke fide sandy loam (0 to 'I) percent. slolaes) (Rcl. This is the only Roanoke soil mapped in Wake County. It is on low stream terraces. The surface layer is da.rk- gra,y to grayish -brown fine sandy loa:ln 6 to 20 irwhes thick. The, subsoil is gray, very firm clay to clay loam that is mottled with yellow and browli in nanny places. The; subsoil is 20 to 30 inches thick. Infiltration is _000d, and surface runoff is slmv to ponded. Wetness and surface ponding are severe hazards if crops are grown. Where, this soil is properly drained, it is easy to keep in ,good. tilt -h. Tillage is sometimes re- stricted after heavy rains, however, because of the slowly permeable subsoil. If this soil is properly drained, it is suited to paaQttare, hay, and solve ropy crops. Surface and subsurface drain- age ;are needed if cultivated crops are growls, but obtain- ing proper draivage 15 difficult. Most of the aacresa-e is in forest, but some of it is cultivated or in pasture. (Capability unit IVw-1, woodland suitability group 2, wildlife, suitability group 3) Swamp 15w) is a miscellaneous land type that is covered by water most of the time. It is not extezzsive but occurs , , the heads of nla.ramade lakes in most parts of the county. The soil material has washed from soils of up- lands during periods of high rainfall. Swamp Sustains a cover of alder, cattails, and bog rush. Because of wetness and inaccessibility, fear observa- tions of the soil characteristics of this land type have. been made. Therefore, an onsite investigation is neces- sary before use is planned. (Capability unit VIIsv-1, WAKE COUNTY, NORTH CAROLINA woodland suitability group 14, wildlife suitability group 3) Troup Series The Troup series consists of nearly level or gently sloping, very deep, well -drained soils on Coastal Plain uplands in the southern part of the county. These soils are on broad flats and on smooth, rounded divides where the difference in elevation is about 10 feet between the highest and the lowest points. The water table remains below the solum. Natural fertility and the content of organic matter are low, permeability is rapid, and the availatle water capac- ity is very low. The shrink -swell potential is low. Exce�.lt in areas that have received lime, these soils are strongly acid. Response is moderately good if suitable applica- tions of lime and fertilizer are made. Though most of the acreage is cultivated, these soils are not Important for farming. In Wake County they are mapped only with the Wagram soils. Representative profile of a Troup sand in a cultivated field 21/2 miles south-southeast of Varina on N.C. High- way No. 42, one-eighth of a mile north on a farm road, and 10 yards west of that road: Ap-0 to 8 inches, dark grayish -brown (10YR 4/2) sand; single grain; loose when moist or dry; many, fine, fibrous roots; many fine pores; slightly acid; abrupt, wavy boundary. A21-8 to 27 inches, light yellowish -brown (2.5Y 6/4) sand; single grain; loose when moist or dry; few, fine, fibrous roots; few fine pores; slightly acid; gradual, smooth boundary. A22-27 to 49 inches, light yellowish -brown (2.5Y 6/4) sand; common, medium, faint, pale -yellow mottles; single grain; loose when moist or dry; few, fine, fibrous roots; few fine pores; strongly acid; clear, smooth boundary. B1-49 to 58 inches, yellowish -brown (10YR 5/6) sandy loam; common, coarse, distinct, strong -brawn (7.5YR 5/6) mottles; weak, fine and medium, subangular blocky structure; friable when moist, sticky and slightly plastic when wet; few, fine, fibrous roots; few fine pores; strongly acid; clear, smooth boundary. B21t 58 to 64 inches, yellowish -brown (10YR 5/6) sandy clay loam; common, medium, prominent, yellowish -red and common, medium, distinct, strong -brown mottles; weak, fine and medium, subangular blocky structure; friable when moist, sticky and slightly plastic when wet; few fine pores; thick coatings on sand grains; few small quartz pebbles; strongly acid; abrupt, smooth boundary. B22t-64 to 74 inches, mottled brownish -yellow (10YR 6/8), strong -brown (7.5YR 5/6), and yellowish -red (5YR 5/8) clay loam; moderate, medium, subangular blocky structure; friable when moist, sticky and slightly plastic when wet; few fine pores; thick coatings on sand grains; few clay bridges; few small quartz peb- bles; red (2.5YR 4/6), brittle sesquioxide nodules; strongly acid; clear, smooth boundary. B3-74 to 83 inches, strong -brown (7.5YR 5/6) sandy clay loam; few, fine, prominent, red mottles; weak, fine and medium, subangular blocky structure; friable when moist, slightly sticky and slightly plastic when wet; few fine pores; strongly acid; gradual, smooth boundary. C-83 to 88 inches -h, mottled reddish-yellow (7.5YR 6/8) and yellowish -red (5YR 5/8) loamy sand; massive; brit- tle and friable when moist; few, thin, discontinuous iron coatings on sand grains; medium acid. The A horizons range from 40 to 60 inches in thickness and from dark grayish brown to light yellowish brown in 53 color. The B horizons range from 30 to more than 72 inches in combined thickness and from sandy loam to sandy clay loam in texture. The color of the B horizons ranges from yellowish brown to strong brown in 10YR and 7.5YR hues, and generally the B horizons are mottled with yellowish red and strong brown. The combined thickness of the A horizons and B horizons ranges from 60 to more than 80 inches. Depth to hard rock is generally more than 20 feet. Troup soils occur with Wagram soils. They have a thicker surface layer, however, than the Wagram soils. Vance Series The Vance series consists of gently sloping and slop- ing, moderately deep, well -drained soils on Piedmont uplands that are mostly in the northeastern and eastern parts of the county. These soils are on side slopes and on rounded divides where the difference in elevation is about 20 feet between the highest and the lowest points. They have formed under forest in material that weathered from granite, gneiss, and other acidic rocks. The water table remains below the solum. Natural fertility is medium, and the content of organic matter is low. Permeability is slow, and the available water capacity is medium. The shrink -swell potential is moderate. Except in areas that have received lime, these soils are medium acid to strongly acid. Response is good if suitable applications of lime and fertilizer are made. The Vance soils of Wake County are moderately important for farming. Most of the acreage is cultivated or in pasture, but a small acreage is in forest. Representative profile of a Vance sandy loam in a cultivated field 3.5 miles west of the Wakefield Church, 600 feet northeast on a farm road, and 15 feet south of the farm road: Ap-0 to 5 inches, grayish -brown (10YR 5/2) sandy loam; weak, medium and coarse, granular structure; very friable when moist; many fine, fibrous roots; few fine pores; medium acid; abrupt, smooth boundary. B21t--5 to 14 inches, yellowish -brown (10YR 5/8) clay; few, fine, prominent, red mottles; weak, coarse, prismatic primary structure breaking to moderate, coarse, angu- lar blocky structure; very firm when moist, sticky and plastic when wet; common, fine, fibrous roots in cracks between the peds ; common fine pores; medium clay films on ped surfaces; strongly acid; clear, smooth boundary. B22t-14 to 23 inches, strong -brown (7.5YR 5/6) clay; com- mon, fine, prominent, red mottles; moderate, medium, angular blocky structure; very firm when moist, sticky and plastic when wet; few, fine, fibrous roots in cracks between the peds ; few fine pores; medium clay films on ped surfaces; strongly acid; clear, wavy boundary. B3-23 to 29 inches, yellowish -brown (10YR 5/8) clay; many, medium, prominent, red mottles; moderate, very fine and fine, angular blocky structure; firm when moist, sticky and plastic when wet; few, fine, fibrous roots In cracks; many fine pores; thin clay films in cracks; common particles of weatherable material from the C horizon; strongly acid; abrupt, irregular boundary. C-29 to 35 inches +, mottled strong -brown and yellowish - red weathered granite or gneiss that has a texture of clay loam; massive; friable when moist; strongly acid. This layer contains common pieces of weathered feldspar. The Ap horizon ranges from 4 to 15 inches in thickness and from grayish brown to yellowish brown in color. The B hori- zons range from 8 inches to 30 inches in total thickness and from clay to sandy clay in texture. The color of the Bt hori- zons ranges from yellowish brown to yellowish red of 10YR ul SOIL SURVEY and 5YR hues, and those horizons are mottled with brown and red. The combined thickness of the A horizon and B horizons ranges from 20 inches to 40 inches. Depth to hard rock is generally more than 4 feet and is commonly more than 10 feet. Vance salls omur with Appling, Wedowee, Enon, and Helena soils. They are firmer when moist and are more plastic when wet than are the Appling and Wedowee soils. Vance soils art, more neld and loss brownish than the Enon soils and are better drained than the Helena soils. Vance sandy loam, 2 to 6 percent slopes (VaB).—This soil is on smooth, interstream divides in the uplands. The surface layer is grayish -brown to yellowish -brown sandy loam 7 to 15 inches thick. The subsoil is 8 to 30 inches thick and consists of yellowish-bro-vii to yellowish -red, very firm clay to sanely clay, with common mottles of red (fig. 9). Infiltration is good, but permeability is slow and sur- face runoff is medium. The hazard of erosion is moderate. This soil is easy to keep in good filth, but tillage is some- Figure 9—Profile of a Vance sandy loam. In this soil the subsoil is clay that is very firm when moist and very plastic when wet. times delayed after heavy rains because of the slowly permeable subsoil. About two-thirds of the acreage is cultivated or in pasture, and the rest is in forest. This soil is well suited to most of the locally grown crops, but the cultivated areas are used chiefl for row crops. Practices that effee- tivel control runowland erosion are needed hi the culti- vated areas. (Capability unit Ile -3, woodland suitability group 11, wildlife suitability gToup 1) Vince sandy loam, 2 to % percent slopes, eroded NaM.—This soil is on smooth interstream, divides in the uplands. The surface layer is 4 to 7 inches thick. The subsoil is 8 to 30 inches thick and consists of yellowish - brown to yellowish -red, very firm clay to sandy day that has common mottles of red. Included with this soil in mapping were some severely eroded spots where the subsoil is exposed. These areas makeup from 5 to 25 percent of the acreage in the mapping unit. Infiltration is fair, but permeability is slow and sur- face runoff is medium. The hazard of further erosion is moderate. This soil is difficult to keep in good tilth, and tillageis restricted after heavy rain-, because of the slowly permeable subsoil. A crust forms on the severely eroded spots after hard rains, and clods form if those, areas are worked when wet. The crust and the clods interfere with germination. As a result, stands of crops are poor and replanting of those areas may be necessary. An even stand of tobacco is hard to obtain. Plants in an uneven stand mature at different times, which makes har- vesting and curing difficult and reduces the quality of the tobacco. About two-thirds of the acreage is cultivated or in pas- ture, and the rest is in forest. this soil is well suited to most of the locally grown crops, but the cultivated areas are used chiefly for row crops. Practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit IIe-3, woodland suitability group 11, wildlife suitability group 1) Vance sandy loam, 6 to 10 percent slopes, eroded (VaC2).—This soil is on narrow side slopes in the uplands. Where erosion is moderate, the surface layer ranges from brown to yellowish brown in color, from sandy loam to sandy clay in texture, and from 4 to 6 inches in thick- ness. Where erosion is only slight, the surface layer is grayish -brown to yellowish -brown sandy loam 6 to 12 inches thick. The subsoil is 8 to 30 inches thick and con- sists of yellowish -brown to yellowish -red, very firm clay to sandy clay, with common mottles of red. In soma places some severely eroded spots where the subsoil is exposed were included with this soil in mapping. Infiltration is fair to good, but permeability is slow and surface runoff is rapid. The hazard of further erosioia is severe. Where this soil is only slightly eroded, it is easy to keep in good tilth. Wliere it is �iioderately eroded' . it is difficult to keep in good tilth. Because of the slowly permeable subsoil, tillage is restricted after heavy rains. A crust forms on the severely eroded spots after hard rains. and clods form if those areas are worked when wet. the crust and the clods interfere with germination. As a result, stands of crops are poor and replanting of those areas is sometimes necessary. An even stand of tobacco is hard to obtain. Plants in an uneven stand WAKE COUNTY, WORTH CAROLINA mature at different bene€, wid lr makes l arvesting wid curing of the crop dii itath and reduces the duality of the tobacco. This soil is well suit:` to most, of the crops grower locally. Where it is cultivated, it is used chiefly for row crops. about one-third of the acreage is cultivated or in pasture, and fere rest is in, forest. Intensive practices that effectively control rtln€ ft and erosion are needed in the cultivates! areas. (Capability unit rife -3, woodland suit- ability group 11, wildlife suitability group 1) Wagram Series The Wagram series consists of nearly level to sloping, very deep, somewhat excessively drained soils that occupy large areas ori Coastal Plain uplands in the southern part of the county. These soils are on side slopes and on broad,smooth, r• unded divides where the dif- ference in elevation is about. 20 feet between the highest and the lowest points. They have formed under forest in Coastal Plain sediment. The water table remains below the solum. Natural fertility and the content of organic matter are low or very loin, and permeability is moderate. The available rater capacity and the shrink -swell potential are low. Except in areas that have received lime, these soils are inedium acid to very strongly acid. Response is good if suitable applications of line and fertilizer ar,� macre. The IVagraln soils of Wake County are moderately important for. fal-ining. Most of the acreage is cultivated, but part of it is in pasture or forest. Representative profile of a IV, agram loamy sand in tr, cidtivated field one-half rails north of the line between Wake. and Johnston Counties, 11/I miles south of Little, llilack Creek, and 100 yards south of la. paved road: Ap--0 to 8 latches, grayish -brown (10YR 5/2) loamy sand; weak, coarse, granular structure; very friable when moist; many fine, fibrous roots; medium acid; abrupt, smooth boundary. - 2--8 to 25 inches, pale -brown (10YR (1/3) loamy mnd; few, me.clium, distinct, yellow mottl" ; weak, coarse, granular structure; very friable when moist ; com- niols, fine„ fibrous roots in uppermost 4 inches; medi- um acid; eleacr, wavy boundary. Ill—?.5 to 31 inches, brownish -yellow (10YR 0/8) saudy loazat ; weak, nn:diunk and coarse, subangul-ar blocky struc- ture; very friable when moist., slightly stieky and slightly plastic when wet ; medium acid , clear, wavy boundary. B21t-31 to 31) inches, yellowish -brown (10YR 5/8) sandy clay loam; weak, medium .:nd coarse, Subangular blocky structure; friable when inoist, sticky and slightly plastic when wet; few, thin, discontinuous clay films, few fine pore`: strongly neid ; clear, -wavy bo welnt,t. B22t--39 to 4:5 hwhes, yellowish -brown (10YR 5/8) sandy clay loath ; common, fine, distinct, reddish. yellow mottles; weak, inedium, subanguhir blocky structure; friable when moist, sticky and slightly plastic -when wet; thin, discoutinuous clay films; few, red, soft nodules; strongly acid; gradual, wavy boundary. B31t-1.5 to 6.5 inches, brownish -yellow (10YR 6/01) sandy cbzy loam; connnon. anediuni, distinct mottles of yel- low li h brown, red, and light gray; moderate, medium, subangular blocky structure; friable when naoit, sticky aand slightly plastle when wet; mediaun, discon- t:imtons clay funis; very strongly acid; abrupt, sanooth boundary. 55 IIB82--05 to 73 inches, mottled brownish -yellow (10YR 0/0), yellowish -Brown (10YR 5/8), red (2,.5YR 5/8), and light -gray (10YR 7/2) clay; moderate, fine, angular blocky strueture; very ftrin when moist, sticky and plastic when wet, few thin clay films; very wrongly acid; clear, sinooth boundary. IIC---73 to 100 luche?, +, coarsely mottled, light -gray (10YR 7/1), dark -red (10113/6), and yellowish -brown (10YR 5/3) clay; massive; very firm when tnoi�t, sticky and plastic when wet:; very strongly acid. The A horizons range from 20 to 40 inches in eombined thickness, from dark grayish brown or grayl.6sh broiiwn to pale yellow in color, and from loamy sand to sand in texture. The B horizons range from yellowish brown or brownish yellow to reddish yellow- in color and from. 30 to more than 60 inches in combined thickness. The texture of the B horizons ranges from sandy loamy and sandy clay loam to clay. The combined thick- ness of the A horizons and B hoaizuns L; naore than (K) inches. Depth to hard rock is generally macre than 20 feet. wagram soils oecur with Norfolk and Troup soils. They have a thicker surface layer than the Norfolk soils and a thinner surface layer than the Troup. Wa.gram loamy sand, 0 to 2 percent slopes (WaA).-_- This soil is on broad, fiat interstream divides in the uplands. The surface layer is dark grayish -brown to bale -yellow loamy strand 20 to 40 inches thick. The sub- soil is yellowish -brown to reddish-yellow, friable sandy loam to sandy clay loam 30 to 60 'Inches or more thick. In many lilaces this soil contains an incipient and dis- continuous horizon, with plinthite. Infiltration is good, and surface, runoff is slow. This soil is easy to keep in good filth and can be. worked throughout a wide range of moisture content. The thick, sandy Surface layer snakes it droughty, however, and subject to leaching. Practically all of the acreage is cultivated, but a small. acreage is in forest. This soil is fairly well suited to most of the locally brown crops, but the cultivated areas are used chiefly for row crops, especially tobacco. Mod- erately intensive practices that effectively conserve inois- ture and that restrict leaching are needed in the areas used for crops. (Capability unit IIs -1, woodland suit- ability group 9, % ildlife suitability group 4) Wagram loamy sand, 2 to 6 percent slopes (WaB).— This soil is on broad, sznoot-h inter•stream divides in the uplands. The surface layer is dark grayish -brown t.o pale- yello-,v loamy sawed 20 to 40 inches thick. The subsoil is yelloicish-l.aroivn to reddisli-yellow, friable sandy loam to sandy, clay loam 30 to 60 iliches or more thick. In many phases this soil contains <ill incipient and discon- tinuous Horizon, with plinthite. Infiltration is good, and surface runoff is rnediurri. The hazard of erosion is moderate. This soil is easy to keep in good tilth and can be worked throughout a hide range, of moisture content. The thick, sandy surface layer makes it droughty, however, and it is subject to leaching. Practically all of the acreage is cultivated, but a small acreage, is in forest. This soil is fairly well suited to most of the locally grown crops, but It is used chiefly for rowv crops, especially tobacco. -Moderately intensive practices drat, effectively conser°ve moisture all restrict leaching are needed. Practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability emit Us 1, woodland suitability group 9. wildlife suitability group 4) M agram lowny sand, 6 to, 10 percent slopes €WaQ.— This. soil is on na;r°iroae side slopes in the uplands. The sur - face layer is dark grayish -brown to pale -yellow loamy sand 20 to 40 inclies thick. The subsoil is yellowish-browi to reddisli-yellow, friable &%ndy loan to sandy clay loam 30 to 60 inches or more thick. In steamy places this soil con'taaiiis in incipient, and discontinuous horizon, with plinthite. Incla,Xded with this soil in snapping Ncere, some areas where the slope is between 10 wed 15 percent. Infiltration is goad, and surface runoff is rapid. The hazard. of erosion is severe. This soil is easy to keep in good ti.lth and can be worked throughout a wide range of moisture content,. The thick, sandy surface layer makes the soil droughty, however, ever, a.nd subject to leacli.iUg of mobile plant as uta ients. About three-fourths of the aicreikge is cultivated or in pasture, and the rest is in forest. 'Ris soil is fairly well suited to most of the locally grown €;rolls, and the culti- vated areas are used chiefly for row crops, especially tobacco. Intensive practices that effectively control run- off and erosion are needed in the cultivaatecl areas. (Capa- bility unit Me -5, woodland suitability group 9, wildlife suitability group 4) agram-Troup sands, 0 to 4 percent slopes €WgA)•---tl The soils in this soil complex are so intricately mixed that the areas cannot be shown separately on a snap of the scale used. About, 60 percent of a typical inapped area is Wa-gram sand, 30 percent is Troup sand, and about 10 percent consists of other IVagn.im soils, Norfolk soils, and similar soils. The I'"aagrain sand has a surface layer that: is dark grayish brown to pale yellow and is 20 to 40 inches thick. The subsoil is yellowish -brown to strong -brown, friable sandy loam to sandy clay loam 30 to 60 inches thick. The Troup soil has a surfai,ce, layer of dark grayish - brown to light yellowish -brown sand 40 to 00 inches thick. The subsoil is yellowish -brown to strong -brown, friable sandy loans to clay loam 30 to 72 inches or more thick. In both soil,~ infiltration. is good. Surface runoff is medium to slow. These soils are easy to _keep in good tilth and can be. worked throughout. aa, `tide range of moisture content. The thick, sandy surface layer makes them droughty, however, and subject to severe leaching of mobile plant nutrients. About two-thirds of the acreage is cultivated, and thc; rest is in forest. The soils are fairly avell suited to most of the locally groyan crops, though returns are generally not high. Af ost of the acreage that is cultivated is used for row crops. Tnterisive practices that effectively con- serve moisture and. that protect the soils from leachinb are needed in the cultivated areas. ( Capability unit. ITIS -1, woodland suitability group 10, wildlife suitabil- ity group 4) Wahee Series The 'Wakes series consists of nearly level, deep, some- what poorly drained soils on low stream terraces. These soils occupy large and small areas near the major streams in the county. They have formed under forest in alluvial deposits. A seasonally high ,rater table is at: a depth of about 1%, feet. Natural fertility is medium, and the content of organic matter is low. Nrineability is sloe*, the available water capacity is inediunl, and the shrink -swell potent:ia.l isrnodertate. Flooding' is frequent, but the floodwaters remain for only a ; .ort time. Except in aav areas that lee received lime, these; soils are strongly acid. Response is fairly good if suitable applications of lime and fertilizer are made. The 11Tahee soils of Wake County are not important for farming. Most of the acreage is in forests of inixod hardwoods, but a small acreage, is in pasture or is milt,i- varted. Representative profile of Napes base sandy lowia in :1 recently cleared field 1.3 miles southwest of Plyrnouth Church on a farin road and 135 yards north of the and of the farm road Ap -0 to 6 inches, dark grayish -brown (10YR 4/2) 'fine sandy loam; weak, medium, grsnulax° structure; very fid. sable wheal moist; many fine., and niediam, fibrous roots; common fine pores; slightly acid; abrupt, smooth boundary. B1-6 to 14 inches, yellowish -brown (10YR 518) light fine candy clay loam; few, fine, distinct, gray mottles ; weak, medium, subangular blocky structure; friable when moist, slightly sticky and slightly plastic when wet; common, fine, fibrous roots; few tine pores; strongly acid; gradual, wairy boundary. 1i2t-- 14 to 3t3 inches, yellowish -brows, (10YR 5/8) clay; common, medium, distinct, gray mottles and few, rine, prominent, yellowish -red mottles; strong, medium and, coarse, angular blocky structure; eery firm when moi Mt, sticky and plastic -,hen eget; few. fine, woody and fibrous roots; feu' fine pores ; thick. medium clay films on pcd surfaces; thiii layers of fine sandy material in vertical cracks; strongly acid; gradual, irregular boundary. B3—.36 to 45 inches -I-, mottled gray (10YR. (3/1) and yellow- ish -brown (10YR 5/$) fine sandy clay lomaa that con- tains pockets of gray (10YR (3/1) heavy snaidV clay', friable when moist, sticky and slightly plastic when wet; few, fine, woody roots; medium acid. The A horizon ranges from 4. to 10 inches in thickness and from dark grayish brown to pale olive in color. The, D hori- zons range from 39 to 70 inches in combined thickness and from fine Fmidy clay loam to clay in texture. The color of the B horizons is ,yelloavish brofvi). mottled ,with yellowish or gray mottles of 5T', 2.5Y7 and 10YR hues. The bray colors increase with increasing depth until the soil material is mostly gray or is entirely gray. The lower boundary of the B2t horiz=on commonly separates thtat horizon from a. stone line, sand, or unconsolidated sand and clay. The thickness of the solum mites from 24 to more than 45 inches. Depth to hard rock is more than is feet-, and is commonly more than .h feet. Wahee soils occur with Augusta, Altavista, and ftonnoke soils. They have a caner textured subsoil than the Augaa.stea and AlUvista soils. Wahee soils are more poorly drained than the Altavista soils but are better drained than the Roanoke soils. Wahee fine sandy loan (0 to 2 percent slopes) (Wh).---- `I'his is the only Wahee soil mapped in Wake County. It is on low stream terraces. The surface layer is Clark gray - isli-brown to pale -olive fine sandy loam 4 to 10 inches thick. The subsoil is yellowish -brown fine sandy clay loam to clay mottled with gray and is 39 to 70 inches thick. Included with this soil in mapping were some areas where the slope is between 2 and 4 percent. WAKE COUNTY, NORTH CAROLINA Infiltration is good, and surface runoff is slow to ponded. If this soil has been drained, it is easy to keep In good tilth. Because of a slowly permeable subsoil, however, tillage can be performed within only a fairly narrow range of moisture content. Most of the acreage is in forest, but a small acreage is in pasture or is cultivated. Where this soil is properly drained, it is fairly well suited to pasture, hay, and some row crops. Wetness and the slowly permeable subsoil are the main limitations to use for crops. Drainage of this soil is difficult. Nevertheless, if cultivated crops are to be grown, a complete system of surface and subsurface drainage is needed. (Capability unit IIIw-2, woodland suitability group 4, wildlife suitability group 2) Wake Series The Wake series consists of gently sloping to moderate- ly steep, somewhat excessively drained soils that are very shallow over hard rock. These soils occupy rather large areas on Piedmont uplands, primarily in the northeast- ern part of the county. They are on side slopes and on rounded divides where the difference in elevation is about 50 feet between the highest and the lowest points. The soils have formed under forest in material that weathered from .granite, gneiss, and other acidic rocks. The water table remains below the solum. Natural fertility and the content of organic matter are low. Permeability is moderately rapid, the available water capacity is very low, and the shrink -swell poten- tial is low. Except in areas that have received lime, these soils are strongly acid. Response is fairly good if suit- able applications of lime and fertilizer are made. In this county Wake soils are not important for farm- ing. Most of the acreage is in forest. Representative profile of a Wake gravelly loamy sand, 1.4 miles east of Wake Crossroads on county road No. 2224, 0.15 of a mile south on a private road, in a small cultivated field south of the road: Al) -0 to 6 inches, brown (10YR 5/3) gravelly loamy sand; single grain; loose when moist or dry; contains many coarse quartz sand particles and many feldspar parti- cles; strongly acid; abrupt, wavy boundary. C-6 to 15 inches, yellow (10YR 7/6) loamy sand; single grain; loose when moist or dry; contains common fine pebbles and many feldspar particles; strongly acid; clear, wavy boundary. R-15 inches t, light-colored granite that is high in content of quartz. The color of the surface layer ranges from brown or very dark grayish brown to light yellowish brown. The color of the C horizon ranges from yellow to yellowish brown. In places the C horizon contains particles of unweathered feld- spar, mica, and other dark minerals, as well as particles of quartz. In places the texture throughout the profile is gravelly loamy sand instead of loamy sand. Depth to hard rock is only 20 inches or less. Wake soils occur with Louisburg soils. They are shallower over bedrock than are the Louisburg soils. Wake soils, 2 to 10 percent slopes (WkQ.—These soils are on small ridges and side slopes in the uplands. They have a surface layer of very dark grayish -brown to light yellowish -brown loamy sand or gravelly loamy sand 2 to 10 inches thick. Beneath the surface layer is yellow to yellowish -brown loamy sand 0 to 14 inches thick. 57 Infiltration is good, and surface runoff is medium to rapid. The hazard of erosion is very severe. These soils are easy to keep in good tilth and can be worked through- out a wide range of moisture content. The coarse texture and the bedrock near the surface make the soils very droughty during dry seasons. Leaching of mobile plant nutrients takes place during rainy seasons. Most of the acreage is in forest, but some of it is cultivated or in pasture. These soils are suited to only a few of the locally grown crops. Very intensive practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit IVe-3, woodland suitability group 12, wildlife suitability group 4) Wake soils, 10 to 25 percent slopes (WkE). °rhese soils are on side slopes bordering drainageways in the uplands. Their surface layer is very dark .grayish -brown to light yellowish -brown loamy sand or gravelly loamy sand 2 to 10 inches thick. It is underlain by yellow to yellowish -brown loamy sand 0 to 10 inches thick. Infiltration is good. Surface runoff is very rapid. Because of bedrock near the surface and slopes, these soils should be kept in forest. They are not suitable for cultivation. (Capabilit,v unit VIIe-1, woodland suit- ability group 12, wildlife suitability group 4) Wedowee Series The Wedowee series consists of gently sloping to moderately steep soils that are deep and well drained. These soils are on Piedmont uplands, mostly in the northeastern part of the county, but some scattered areas are in other parts. They are on side slopes and on rounded divides where the difference in elevation is about 50 feet between the highest and the lowest points. The soils have formed under forest in material that weathered from granite, gneiss, and other acidic rocks. The water table remains below the solum. Natural fertility and the content of organic matter are low, permeability is moderate, and the available water capacity is medium. The shrink -swell potential is moder- ate. Except in areas that have received lime, these soils are strongly acid. Response is good if suitable applica- tions of lime and fertilizer are made. The Wedowee soils of Wake County are important for farming. Much of the acreage is cultivated or in pasture, but part of it is in forest or in other uses. Representative profile of a Wedowee sandy loam in a cultivated field one-half mile north and one-fourth mile west of the Lockhart School on a paved road, 1 mile north on a gravel road, and 10 yards east of road: Ap-0 to 7 inches, brown (10YR 5/3) sandy loam; weak, fine and medium, granular structure; very friable when moist; many fine, fibrous roots; many fine pores; few fine mica flakes; medium acid; abrupt, wavy bound- ary. 1321t-7 to 12 inches, strong -brown (7.5YR 5/6) clay loam; weak, flue and medium, subangular blocky structure; firm when moist, sticky and slightly plastic when wet; common, fine, fibrous roots; common fine pores; thick clay films on most ped surfaces; few fine mica flakes; strongly acid; abrupt, smooth boundary. B22t-12 to 18 inches, yellowish -red (5YR 5/6) clay loam; common, medium, faint, reddish-yellow mottles; mod- erate, medium and fine, subangular blocky structure; friable when moist, sticky and slightly plastic when IM wet; few, flue, 11brous roots; few flue pores; 'thick clay films on most ped surfaces; fee}- flue mica fiakes; strongly acid; clear, smooth boundary. B3t-18 to 24 inches, yellov4sh-red (5YR 5/6) sandy clay loam; few, fine, prominent, brownish -yellow* potties; moderate, coarse, siibangul a,r hlockq strznetura,�, friable When ntni4t, .slightly sticky and slightly plastic when wet; thick, cont mous, reddish -brown (MR. 4/4) dray films that tire more strongly developers oil verti- cal srplaces than in other places; common fine pores; common fine mica. flakes; strongly acid; clear, smooth boraptdaary. C-24 to 40 inches +, mottled brownish -yellow (l®YR 6/8), yellowlsh-reel (5YR: 5/0)), and red (2.5YU 5/8) sandy loam; nnassive ; friable when moist; many fine amen flakes, strongly acid. The 4 horizon range] from 3 to 12 inches in thickness and from pale brown or brown to dark grayish brown of IOYR hue in color. The Bt horizons range from 8 to 30 inches in combined thl(,.kness and from sanfly clay loan to clay loam in texture. The color of the Bt horizons ranges frosty yellow- ish brown to yellowish red of 10YR to 5YR Innes, and typi- oally those horizoats are mottled with red and yellow. In places the B3 horizon is streaked with yellow and gray. The combined thickness of the A horizon and B horizons ranger; frown 26 to 37 inches. Depth to hard rook is generally more than 4 feet tract is commonly more than 6 feet. Wedowee soils ocenr with the Appling, Louisburg, and Vance soils. The combined thickness of their surface layer and subsoil is less than that of the Applin; soils, and they have a finer textured subsoil than the Louisburg soils. The Wedowee soils have a more friable subsoil than the Vance soil:. Wedowee sandy loam, 2 to 6 percent slopes (WmB).— This soil is on smooth interstream divides in the uplands. The surface layer is pale -brown or brown to dark grayish -brown sandy loam 6 to 12 inches tlaiek. The sub- soil is yellowish -brown to yellowish -red, firm sandy clay loam to clay loaln 8 to 30 inches thick. The subsoil coli - tains common mottles of red or yellow. Included with this soil in neap ping were some areas where from 20 to 50 percent of the surface layer is covered with gravel and frorn 20 to 50 percent of the surface layer consists of gravel. Infiltration. is good, and surface runoff is medivan. The hazard of erosion is moderate. This soil is easy to keep ill good tilth and can be worked throughout a -Wide range of moisture content. About two-thirds of the acreage is cultivated or in pasture, and the rest is in forest or in other uses. The cultivated areas are used mainly for row crops, but this soil is fairly well suited to most of the other locally. �;1 'own crops. Intensive practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit IIe-1, woodland suitability -group wildlife suitability gr:°oup 1) Wedowee sandy loam, 2 to 6 percent slopes, eroded (WmB2).—This soil is on smooth interst.ream divides in the uplands. It has a surface layer that is 3 to 7 inches thick. Ira many places the surface laver is a: mixture of the reniaaining original surface soil and of material from the subsoil. In the less eroded areas, the surface layer is pale -brown to grayish -brown sandy loam, but the. color ranges to brown and the texture manges to candy clay loam in the more eroded spots. The, subsoil is B to 31.) inches thick and consists of yellowish -brown to yello-Wish-red, firm sandy clay loans to clay loam, with common mottles of red or yellow. Included with this soil in mapping Nvere, some areas iia. which from 20 to 50 percent of the surface layer is gravel. Also included were some severely eroded shots where the subsoil is exposed. The severely eroded spots make up from 5 to 25 percent of the acreage in tho inaapping unlit. Infiltration is fair, aaxid surface runolf is medium. The hazard of further erosion is moderate. This soil. is diffi- cult to keep in good tilth, but itcan be, worked through- out a fairly wide range of moisture content,. A. crust formas on the severely eroded spots after hard rains, and clods form if those areas are worked when wet. The crurst and the clods interfere with germination. As aaa result, stands of crops are poor and replanting of those areas may be nee Saar . An even stai,ncl of tobacco is hard to obtain. Plants in an uneven stand mature, at different tunes. This makes harvesting and curing of the crop difficult and reduces the quality of the tobacco. About two-thirds of the acreage is cultivated or in pas- ture, and the rest is in forest; or in other uses. The culti- vated areas are used chiefly for row crops, but this soil is fairly well suited to most of the other locally grown crogis. Intensive practices that effeetively control runoff and erosion are needed in the cultivated areas. (Catpabil- ity unit He -1, woodland suitability group 5, wildlife suitability group 1) Wedowee sandy Ioam, 6 to 10 percent slopes WmC).---- This soil is on side slopes in the uplands. It has a surface layer of pale -brown and brown to dark grayish -brown sandy loam 6 to 10 inches, thick. The subsoil is 8 to 26 inches thick and consists of yellowish -brow n to yellowish - red, firm sandy clay loam to clay loan, with commons mottles of red or yellow. Included with this soil in mapping where- Borne na-eaas where froin 120 to 50 percent of the surface is covered «~ith gravel and from 20 to 50 percent of the surface layer consists of gravel. Infiltration is good., and surface runoff is rapid. The hazard of erosion is severe. This soil is easy to keep in good tilth, and it can be worked throughout a evide range of moisture content. About one-third of the acreage is cultivated or in pas- ture" and the rest is in forest or in other uses. The, culti- vated areas are used chiefly for row crops, but this soil is fairly well suited to most of the locally gro-wn crops. Intensive practices that effectively control runotk and erosion are needed in the cultiA-ated areas. (Capability unit I1Ie-1, -Woodland suitability group €b, wildlife suit-. ability group 1 } Wedowee sandy loam, 6 to 10 percent slopes, eroded (WmC'2).—This soil is on side slopes in the uplands. The surface layer is 3 to 7 inches thick. In many places :it is a mixture of the remaining original surface- soil and of material from the subsoil. In the less eroded areas, the surface layer is pale --brown to graYish-brown sandy loam, but the color ranges to brown and the texture ranges to sandy clay loam in the more eroded spots. The. subsoil is S to 26 inches thick and consists of venowish-brown to yellowish -red, firin sandy clay loam or clay loans, with commons mottles of red or yellow. Included with this soil in mapping were soine areas Where from 20 to 50 percent of the surface is covered with gravel and from 20 to 50 percent of the surface WAKE COUNTY, NORTH CAROLINA layer consists of gravel. Also included were some severely eroded spots where the subsoil is exposed. The severely eroded spots make up from 5 to 25 percent of the acreage in the mapping unit. Infiltration is fair, and surface runoff is rapid. The hazard of further erosion is severe. This soil is difficult to keep in good tilth, but it can be worked throughout a fairly wide range of moisture content. A crust forms on the severely eroded spots after hard rains, and clods form if those areas are worked when wet. The crust and the clods interfere with germination. As a result, stands of crops are poor and replanting of the severely eroded spots may be necessary. An even stand of tobacco is hard to obtain. Plants in an uneven stand mature at different times. This makes harvesting and curing of the crop difficult and reduces the quality of the tobacco. About one-third of the acreage is cultivated or in pas- ture, and the rest is in forest or in other uses. Where this soil has been cleared, it is used chiefly for row crops, but it is fairly well suited to most of the locally grown crops. Intensive practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit IIIe-1, woodland suitability group 5, wildlife suit- ability group 1) Wedowee sandy loam, 10 to 15 percent slopes, eroded (WmD2).—This soil is on narrow side slopes bordering drainageways in the uplands. In most places it is mod- erately eroded, but, it is only slightly eroded in some areas. In the moderately eroded areas, the surface layer is pale -brown and grayish -brown sandy loam to brown sandy clay loam 3 to 6 inches thick. In the slightly eroded areas, the surface layer is pale -brown and brown to dark grayish -brown sandy loam 6 to 8 inches thick. The sub- soil is 8 to 24 inches thick and consists of yellowish - brown to yellowish -red, firm sandy clay loam or clay loam, with common mottles of red or yellow. Included with this soil in snapping were some areas where from 20 to 50 percent of the surface is covered with gravel and from 20 to 50 percent of the surface layer consists of gravel. Also included were some severely eroded spots where the subsoil is exposed. Other inclu- sions consist of a few areas of Vance soils in which the subsoil is firmer than typical for the Wedowee soils. Infiltration is fair to good, and surface runoff is very rapid. The hazard of further erosion is very severe. Where erosion is only slight, this soil is easy to keep in good tilth. INrhere erosion is moderate, the soil is difficult to keep in good tilth. This soil can be worked throughout a fairly wide range of moisture content. A crust forms on the severely eroded spots after hard rains, however, and clods form if those areas are worked when wet. The crust and the clods interfere with germination. As a result, stands of crops are poor and replanting of the severely eroded spots may be necessary. Most of the acreage is in forest, but some of it is culti- vated or in pasture. Where this soil has been cleared, the acreage that is cultivated is used chiefly for row crops, but this soil is fairly well suited to most of the locally grown crops. Very Intensive practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit IVe-1, woodland suitability group 5, wildlife suitability group 1) M Wedowee sandy loam, 15 to 25 percent slopes (WmE).— This is a slightly to moderately eroded soil on narrow side slopes bordering the major drainageways in the uplands. In the slightly eroded areas, the surface layer is pale -brown and brown to dark grayish -brown sandy loam 6 to 8 inches thick. In the moderately eroded areas, the surface layer ranges from pale -brown and grayish - brown sandy loam to brown sandy clay loam and is 3 to 6 inches thick. The subsoil is 8 to 20 inches thick and consists of yellowish -brown to yellowish -red, firm sandy clay loam to clay loam, with common mottles of red or yellow. Included with this soil in mapping were some areas where from 20 to 50 percent of the surface is covered with gravel and from 20 to 50 percent of the surface layer consists of gravel. Also included were some severely eroded spots where the subsoil is exposed, and other areas where the slopes range from 25 to 45 percent. Infiltration is good to fair, and surface runoff is very rapid. This soil is highly susceptible to further erosion. Practically all of the acreage is in forest. Where this soil has been cleared, however, it should be used for pas- ture and permanent hay. This soil is not suitable for cultivated crops, because of the moderately steep slopes and susceptibility to erosion. (Capability unit VIe-1, woodland suitability group 5, wildlife suitability group 1) Wehadkee Series The Wehadkee series consists of nearly level, poorly (trained soils on the flood plains of most of the streams in the county. These soils have formed in fine loamy alluvial material. They have a seasonal high water table approximately at the surface. Natural fertility is low, and the content of organic matter is medium. Permeability is moderate to moderate- ly rapid, the available water capacity is medium, and the shrink -swell potential is low. Flooding is frequent, and the floodwaters remain for a long time. Unless lime has been applied, reaction is strongly acid or very strongly acid. Response is fairly good if suitable appli- cations of lime and fertilizer are made. Wehadkee soils are not important for farming. Most of the acreage is in mixed hardwoods and a few pines, but a small acreage is in pasture. Representative profile of Wehadkee silt loam in a wooded area 1% miles east of the Wakefield Church on county road No. 2320, three-fourths of a mile north on county road No. 2341, and 200 feet west of road: 01—layer of thinly scattered hardwood leaves, not thick enough to measure. A1-0 to 6 inches, dark grayish -brown (10YR 4/2) silt loam; common, medium, faint, grayish -brown mottles and common, fine, distinct, yellowish -red mottles; the yellowish -red mottles appear to be stains of organic matter in root channels; moderate, medium, granu- lar structure; very friable when moist; many fine and medium, woody roots; many fine pores; strongly acid; abrupt, smooth boundary. B21g-6 to 10 inches, gray (10YR 5/1) silty clay loam; com- mon, fine, prominent, strong -brown mottles; weak, medium and fine, subangular blocky structure; fri- able when moist, slightly sticky and slightly plastic 0 SOM SURVEY when vet, ; waany fare, woody roots; many this= Peres; strongly acid; clear, ,znooth boundary. B22g.--10 to 20 inches, dark -gray (10YR 4/1) fine sandy clay loath; fen, medium, prominent, sarong -brown mot- tles; weak, medium, subangular blocky structure; frinblia When moist; sightly stle-ky ;ted slightly plsas- tic when went; common, fine, woody rootts; many fine pone,* strongly n e.1d ; clear_snioot;h boundary. B23g-20 to 30 indica, gray (10YR 5i 1) saudY clay loam; w-Lsslvo; fruible when moist, slightly sticky and slightly plastic when Wet; few fine bores, fo w, small, rounded pebbles; strongly acid, abrupt, snaootla boundary. C -g--30 to 40 inches +, mottled gray and darlc-gray saintly loam; naftssive ; very friable wheat moist, slightly sticlo, and slightly plastic when reset; eorranon tine inion slakes; few, .tine, rounded cpuartz pebbles; strongly acid. The Al horizon ranges from dark.. grayish brogan to broom in color gaud from 3 to 12 inches 11i thickness. The color of the B horizons ra.ng°es from gray to dark gray of 10YR hue, and the combined thickness of those horizon, want" from 15 to 30 inelws. In general, the texture of the E horizons rangex trona sandy loans to silty clary loam or ,,andy clay loam. In places, however, the texture in parts of the B hari- zons is sand. The Roll materhu,l in those areas L; massive or has subangular blocky ,structure. Thickness of the solum ranges from 20 to 40 inch". Depth to heard rock ranges from 3 to 15 or more feet. Wehadkee :soils w.eur with C:hewacla Roanoke, and Bibb soils. They are more poorly draiined than the C1hewacla soils, have as coarser textured subsoil than the Roanoke soils, and have a finer textured subsoil than the Bibb soils. Wehadkee silt loam (0 to 2 percent slopes) (Wn) –This is a poorly drained soil on the flood plains of streams. It has a surface layer of dark grayish -Brown to brown silt loans 8 to 1), inches tllick. I lie sile4oil is maty to dark - gray, friable sandy loan to silty clay loans or sandy clay loans, It is commonly mottled with a-,troncr brotiriisand yellowish brown and is 15 to 30 inches thiel:. Infiltration is good, and surface riiilofi is slow to ponded. Where this soil is drained, it is fairly easy to keep in good tilth acid, can be worked within a, fairly wide range of moisture content. This soil is fairly well suited. to a few locally grown crops. It is mainly ill forest, However, though a small acres-ge is in pasture. The soil is i et and is subject to overflow and. polidin , whieli aw. very severe hazards'Adequate. drainage is difficult to obtain, but surface, and sub'surfaace draairlatge are, iieeded if cultivated crops, aare to be gel°ovwri. (C6apabilit.y emit W -w--•1, woodland suit- ability group 2, wildlife suitability grroup 3) edkee and Bubb soils (0 to I. lea.percent slopes) (Wo). The soils of this emit are poor:-ly drained and acro so similar in use and rnaanagetn.ent that they were mapped together ars an undifferentiated unit. Some areas consist entirely of Wehadkee soil, others consist of Bibb soil, and still others consist of as combirin,t,ion of 11'ehadkee, Bibb, and ininor included soils. About 40 percent, of a, typical mapped area is IV, elia.dkee soil, 30 percent is Bibb soil, and 30 percent in Che-%vaclaa, Alaantachie., or other soils, The Wehadkee soil has a surface layer of dark grayisli.- brown to brown Slilt loam 3 to 12 inches tllich. Its subsoil is Fray or dark -gray, friable sandy loam to silty clay loam 15 to 30 inches thick. In most places the subsoil is mottled with st.ronb brown and yellowish brown. The Bibb soil has aa, grayi:Sh-brown Or very dark gray- ish-brovwn surface layer of sandy loam 4 to 12 inches thick. its subsoil is varied. in color sand textaare, but, the colors range from light, brownish, gray to black mottled with gray a"zd brown, and the textures ranges from loam to sandy barn. The combined thicknc�s of their surface Bayer tan<l subsoil is snore than '16 inches. Tlae :oils of this niaxppin unit, ate oil flood plains, ire narrow iipland draws, and in depressions throng'Imut the county. In those areas the stream channels are poorly de- fined. Where these souls taTe on flood plains along streams, they are wet, are subject to very recluent, flooding; of i®ng duration, and have a wetter table at the surface .for poriods of as enrich as 6 months. The, soils ia a, i' are also wet and have a water tableat. the surface. fear.° periods of as much as fa months. In those areas, however, flooding is of only short duration, though ii; is frequent. In many places the ntreaaiii a:laan eels in the uphtnd draws are well defined. Surface runoff is slow to bonded. Infiltration is fair for the ' 'ehaadkee soil and good for the Bibb. Nearly all of the acreage is in mixed hardwoods aa,aid bines. Tlooding and ponding tare very severe hazards. Ade(luate draa,inage of these wet soils is difficult to obtain, but both surface drainage and subsurface drailiaa,g;e "IT0,, needed if cultivated crops are to be growls.. (Caa.paxl}ility unit IV -,v --I, Woodland suitability group 2, wildlife suit- ability group 3) White Store Series The White Store series consists of gently sloping to moderately steep, moderately deep, inoderately well drained soils On Piedinont ul)lands iii the ivestern part of the, county. These soils are on rounded divides that have a difference in elevation of about 50 feet between the highest and the lowest points. They have formed under forest in material that weathered -from sandstone, shale, and mudstoue of Triassic age. The water table gen- erally remains below the solani. Because of the slowly permeable subsoil, however, these soils have a perched water table during wet seasons. Natural fertility and the content of orgaairic in.-Ltter• gree low, and permeability is slow. The aa,v aih< le. water eaapaac- sty avid the, shriiik- ivell potential. are high. Except hi are a� tli tt li ve received lime, these soils are, very etr:onahr acid. Response. is fairly good if suitable aappli.caa,ttons e�f l.i.me, and fertilizer are made. The White Stora soils of this county are. inaln.ly in forest, Some areas, however, aare used for cultiv"nted crops or pasture. Representative profile of a White Store sandy loans in a. wooded area orae -fourth of as mile southlrresi of the. line between NValre and Chatham Counties on U.S. High- w,v No. 1, 2 exiles southeast on a gravel road to as five - points intersection, 1.�,,2 miles southwest on a gravel road, asses_ 500 feet vwest of road l)—o to G inches, light yellowish -brown (loyR 6/4) sanely loam; ivoaak, inedium, granular structure; very fri- able vi,hen molst; many, fine, fibrous and few ariedi- nm, rr oody roots; few small quartz pebbles; strongly acid: abrupt. smooth boundary. 81-6 to 0 inches, yello,,vish-red (5YR 5/6) clay loa,an ; moder- ate, fine, mbangular blocky structure; friable when moist, sticky and plastic when wet:; common, fine, fibrous and woody roots; few thin ebay filmes; very strongly acid; clear, wavy boundary. WAKE COTJNTY, NORT11 CAft,ClllMA B21t- --9 to 20 Inches, reddigix-brown (2.5YR 4/4) clay; strong, fine, ajtgnlar blocky structure; very firm when moist, sticky and very Mastic when wet; few, fine, woody roots; medium clay films; -very strongly acid; clear, wavy boundary. B22t----20 to 25 inches, d€trk reddish -brown (2ZYR 314) clay; e0mmon. fine, prominent, light -gray mottles; strong, ruedium, anVilar, blocky structure; very firm. when Taoist, sticky and very plastic when wet; thin clay films; few pockets of dark -red weathered shale; very strongly acid; clear, wavy boundary. Bat ---25 to 31 inches, dark -red (101. 3/0) clay; common, medium, proxxafYa�nt, light -gray mottles; weak, medi- um, angular blocky structure tending toward rnaas- sive; very firati. when moist, sticky* Land plta:tic when wet; thin clay films; common fragments of diaalnte- graatel shale; very strongly acid; clear, wavy bound- nar, C1-31 to 35 inches, dw;ky-red sands el ay ; disintegrated shale containing pockets of light -;ray clay; very strongly a.eid ; abrupt, ivy boundary. R-35 inches +, dusky -real shale of Triassic age. The Ap horizon rta.nl;dw from 3 to 12 inches in thick -Tress, front dark grayish brown or brown to light yellowish brown or red in color, fund front sandy loam to silt loam or clay Ioana in texture. '.Glee B horlwn� range from 9 to 36 inches in com- bined thickness and have a textari°e mostly of elay that is very- firm when moist €axed, very plastic when wet. The clay ereaclo, when the sails tire dry. The color at the 1i horizons ranges from dusky reel through yellowish reel and. strong brown to olive yellowy in hues ranging from 10R to 2AY. In many places these soil- are mottled with gray in. the upper hart of the B2t horizon. These soils have columnar structure when dry; have strong to weak, medium and coarse, angular blocky structure when moist; and are massive when wet. They have a high content of exchonge€able aluminum. The combined thickness of the A horizon and R horizons raauges from 24 to more than 48 inches. Depth to hard rock is gener,illy more than 3 feet and is commonly more than 8 feet. White Store soils occur Nvith Creedmoor and i4l2ayodran soils, They lack the friable tipper subsoil of the Creedmoor soils, however, and have a firmer subsoil than the dlayodan. White Store sandy loam, 2 to 6 percent slopes (W g). --- This soil is on. broad, smooth interstreaa.rn divides in the uplands. It has a surface layer of dark grayish -brawn axed brown to light yellowrish-brow-tl sandy loamy 6 to 12 inches thick. The subsoil. is 9 to 36 inches thick. It con- sists of clay that is very firm when hoist ,and very~ plastic ,when wet. The color of the subsoil is dusky red, yellow- ish red, strong brown, and olive yellow, with Common mottles of gray. Included with this soil in. rntapping were some areas where the siir.°face layer is coarse sanely loam. and outer areas where the surface 'layer i's fine ;sanely loam.. Infiltration is good, but permeability is slow and sur face runoff is medium, The hazard of erosion is moderate. This soil is easy to keel, in good tilth, but tillage is re- stricted after &,navy nuns because of the slowly perme- able subsoil. This soil is fairly well suited to mange of the locally grower crops. About one-third of the acreage is cultivated or in pasture, and. the r:°est is in forest. The, areas that Crave been cleared. are used chiefly for row• crops. This soil has a high content of exchangeable alurnilimn, which is toxic to sortie plants. Practices that effectively control runoff and erosion are needled in the cultivated areas, (Capability unit Ile -3, woodland suitability group Il, wildlife suitability group 1) White Store sandy loam, 2 to 6 percent slopes, eroded ;MB21.° --'t his soil is on broad, smooth interstrearrx divides in the uplands. The surface layer is 3 to 6 inches thick 61 In rrxaxajw places it is as MiXtrare of the renila,ining original surface layer and of material from the subsoil. IT the less eroded areas, the surface layer is brown to light yellowish -brown sandy loam, bait the texture ranges to clay loans in the more eroded spots. The subsoil is dusky - red, yellowish -red, strong -brown, and olive -yellow clay, with coxnxnon mottles of gray. It is very firm when moist and very plastic when wet. Included with this soil in mapping were some areas of a soil that has a surface lawyer of coarse sanely loam, and other areas of a soil that has as surface laser of fine sandy loaanr„ .Mso included were some severely eroded spots where the subsoil is exposed. "These severely eroded areas make up frolu 5 to 25 percent of the acreage in the snapping unit. Ijifiltration is fair, permeability is slow, and surface runoff is medium. The hazard of further erosion is se- vere. This soil is difficult to keep in good tilth. Because of the slowlypermeable subsoil, tillage is restricted after heavy rains. T crust forms on the severely eroded spots after hard rails, and clods form if those areas are worked. when wet. The crust at,nd the clods interfere with germination. As a result, stands of crops are poor and replanting of the severely eroded spots may be, necessary. About one-third of the acreage is cultivated. or in pas- ture, and the rest is in forest. This soil is fairly well suited to many of the locally grown crops, kind the culti- vated areas are used mainly for row crops. The soil con- tains a large amount of exchangeable aluminum, which is toxic to some plains. Intensive practices that effectively control runoff and erosion are needed in the, cultivated areas. (Capability unit Me -3, woodland suitability group 11, wildlife suitability grouts 1) White Stare sandy loan-, 6 to 10 percent slopes (MC).- -This soil is on narrow side slopes in the upland's. 7t has a dark grayish -brown and brown to light yellow- ish -brown surface layer 5 to 10 inches thick. Th.e subsoil. color ranges from dusky red or yellowish reel to strong brown .and olive yellowy, with common inottl.es of gray. The subsoil is eW that is very firm when moist and very plastic when wet and is J to 30 inches thick. Included with this soil in mapping were some areas of €a soil that h,as as surface layer of coarse sarr.dy loani, and other areas of a soil that, has a surface layer of fine sandy loans. Infiltration is,crood, permeability is slow, and surface runoff, is rapid. Ifhe hazard of further erosion is severe. This soil is eas to keep in goad, tilth. Because of the slowly permeab e subsoil, however, tillage is restricted after heavy rains. About three-fourths of the acreage is in forest, and the rest is cultivated or in pal,st.ure. This soil is fairly well suited to roans of the locally grown crops, and the areas than have been cloared are used chiefly for rows crops. This soil. contains a large amount. of aluminum, which is toxic to some plants. Intensive practices that: effietively control runoff and erosion are needled in the cultivated areas. ( Capability unit IIIc 3, -woodland suitability group 11, wildlife suitability group 1) White Store= sandy loam, 6 to 10 percent slopes, eroded (WwC'2).---This soil is on narrow side slopes in the uplands. Its surface layer is 3 to 6 inches thick. In many places the surface layer is a. mixture of the remaining original surface soil and of material from the subsoil, In the less erod xl areas, the surface layer is brown to light -brown sandy loam, but the texture ranges to clay loam in the severely eroded spots. The color of the sub- soil ranges from dusky red and yellowish red to strong brown and olive yellow, with common mottles of gray. The subsoil is clay that is very firm when moist and very plastic when wet and is 9 to 30 inches thick. Included with this soil in mapping were some areas of a soil that has a surface layer of coarse sandy loam, and other areas of a soil that has a surface layer of fine sanely loam. In the severely eroded spots that are in- cluded, the subsoil is exposed. The severely eroded spots make up from 5 to 25 percent of the acreage in the mapping unit. Infiltration is fair, permeability is slow, and surface runoff is rapid. The hazard of further erosion is very severe. This soil is difficult to keep in good tilth, and tillage is restricted after heavy rains because of the slowly permeable subsoil. A crust forms on the severely eroded spots after hard rains, and clods form if those areas are Figure 10 —Profile of White Store silt loam, 2 to 6 percent slopes. worked when wet,. The crust and the clods interfere with germination. As a result, stands of crops are poor and replanting of the severely eroded areas may be necessary. This soil is fairly well suited to many of the locally grown crops, and the areas that have keen cleared are used chiefly for row crops. About three-fourths of the acreage is in forest, however, and the rest is cultivated or in pasture. This soil contains a large amount of exchange- able aluminum, which is toxic to some plants. Very in- tensive practices that effectively control runoff and ero- sion are needed in the cultivated. areas. (Capability unit INTe- S, woodland suitability group 11, wildlife suitability group 1) White Store sanely loam, 10 to 20 percent slopes WsE).--This is a slightly eroded or moderately eroded soil on narrow side slopes bordering upland drainageways. Where erosion is only slight, the surface layer is dark grayish -brown to brown sandy loam 6 to 8 inches thick. Where erosion is moderate, the color of the surface layer ranges from light yellowish brown to brown, the texture ranges from sandy loam to clay loam, and the thickness ranges from 3 to 5 inches. The color of the subsoil ranges from dusky red and yellowish red to strong brown and olive yellow, with common mottles of gray. The subsoil is 9 to 24 inches thick and consists of clay that is very firm when moist and very plastic when wet. Included with this soil in mapping were some areas of a soil that has a surface layer of fuze sandy loam. Also included were a few severely eroded spots where the sub- soil is exposed. Infiltration is good to fair, permeability is slow, and surface runoff is very rapid. The steepness of the slope and the slowly permeable subsoil make this soil highly susceptible to further erosion. This soil is not suited to cultivated crops, and prac- tically all of the acreage is in forest. The areas that have been cleared should be kept in pasture or permanent hay. (Capability unit Vie -1, woodland suitability group 11, wildlife suitability group 1 ) kite Store silt loam, 2 to 6 percent slopes (WtB).— This is a slightly eroded or moderately eroded soil on broad, smooth interstream divides in the uplands. Where erosion is only slight, the surface layer is dark grayish - brown and grayish -brown silt loam 6 to 8 inches thick. Where erosion is moderate, the color of the surface layer ranges from light yellowish brown to brown, the texture ranges from silt loam to clay loam, and the thickness ranges from 3 to 6 inches. The color of the subsoil ranges from dusky red and yellowish red to strong brown and olive yellow, with common mottles of gray. The subsoil is 9 to 30 inches thick and consists of clay that is very firm when moist and very plastic when wet (fig. 10). Included with this soil in mapping were a few severely eroded spots where the subsoil is exposed. Infiltration is good to fair, permeability is slow, and surface runoff is medium. The hazard of further erosion is moderate. Where erosion is only slight, this soil is easy to keep in good tilth, but where erosion is moderate, the soil is difficult to keep in good tilth. Because of the slowly permeable subsoil, tillage is restricted after hard rains. A crust, forms on the severely eroded spots after hard rains, and clods form if those areas are worked when wet. The crust, and the clods interfere with germi- WAKE COUNTY, NORTH CAROLINA nation. As a result, stands of crops are poor and replant- ing of the severely eroded spots may be necessary. This soil is fairly well suited to many of the locally grown crops, and the areas that have been cleared are used for row crops and pasture. About three-fourths of the acreage is in forest, and the rest is cultivated or in pasture. This soil contains a large amount of exchange- able aluminum, which is toxic to some plants. Intensive practices that effectively control runoff and erosion are needed in the cultivated areas. (Capability unit IIe-3, woodland suitability group 11, wildlife suitability group 1) White Store clay loam, 2 to 15 percent slopes, severely eroded (WvW).—This soil is on Piedmont uplands. It has a red to brown clay loam surface layer 3 to 6 inches thick. The present surface layer is a mixture of the re- maining original surface soil and of material from the subsoil. The color of the subsoil ranges from dusky red and yellowish red to strong brown and olive yellow, with common mottles of gray. The subsoil is 9 to 36 inches thick and consists or clay that is very firm when moist and very plastic when wet. Infiltration is poor. Most of the water from rainfall runs off the surface. This soil is too eroded for cultivation, and most of the acreage is in forest. The areas that have been cleared should be kept in pasture or permanent hay crops. (Capa- bility unit VIe-2, woodland suitability group 11, wildlife suitability group 1) Wilkes Series The Wilkes series consists of gently sloping to steep, very shallow to moderately deep soils that are well drained. These soils occupy small areas on side slopes and on rounded divides in the Piedmont uplands, where the difference in elevation is about 75 feet between the high- est and the lowest points. They have formed under forest, mostly in the northern and western parts of the county, in material that weathered from mixed acidic and basic rocks. The water table remains below the solum. Natural fertility is medium, and the content of organic; matter is low. The available water capacity is low, and permeability and the shrink -swell potential are moderate. Except in areas that have received lime, these soils are slightly acid to medium acid. Response is fairly good if suitable applications of lime and fertilizer are made. In Wake County the Wilkes Soils are of only minor importance for farming. Most of the acreage is in forest. Representative profile of a Wilkes sandy loam in a wooded area 3.5 miles north of N.C. Highway No. 54, on county road No. 1650, and 10 feet east of road: Ap-0 to 8 inches, dark grayish -brown (2.5Y 4/2) sandy loam; moderate, medium, granular structure; very friable when moist; many fine and medium, woody and fibrous roots; many fine pores; common, medi- um and fine quartz pebbles; slightly acid; abrupt, wavy boundary. B2t-8 to 12 inches, strong -brown (7.5YR 5/6) clay loam; common, fine, distinct, yellow mottles and few, fine, distinct, red mottles; strong, fine and medium, angu- lar blocky structure to massive; firm when moist, sticky and plastic when wet; many fine and medium, woody and fibrous roots; few fine pores; tbin, dis- continuous clay films on vertical surfaces of peds ; slightly acid; clear, wavy boundary. 335-403-74--5 63 133-12 to 19 inches, pale -yellow (5Y 8/3) , strong -brown (7.5YR 5/6), and yellowish -brown (10YR 5/6) clay loam mixed with particles of decomposed, fine- grained schist; massive; friable when moist; few, fine, woody roots in cracks; slightly acid; gradual, wavy boundary. C1-19 to 29 inches, pale -yellow (5Y 8/3), yellowish -red (5YR 5/6), yellowish -brown (10YR 5/6), and black (10YR 2/1) silt loam; decomposed schist; few, fine, woody roots in cracks; slightly acid; clear, wavy boundary. C2-29 to 38 inches, pale -green silt loam that is decomposed schist streaked with black (10YR 2/1) and strong brown (7.5YR 5/8) ; slightly acid. R-38 inches f, hard, fine-grained schist containing a large amount of basic minerals. The Ap horizon ranges from 3 to 12 inches in thickness, from yellowish brown or dark grayish brown to dark brown in color, and from sandy loam to silt loam in texture. The 132t horizon ranges from 2 to 10 inches in thickness, generally has a clay or clay loam texture, and has varied colors that range from 5YR to 10YR in hue. The B horizons range from 8 to 36 inches in combined thickness and from sandy loam to clay loam, mixed with saprolite, in texture. The color of the B horizons ranges from 5YR to 5Y in hue. These soils are generally massive. In many places they have clay films in the cracks. The solum ranges from 12 inches to 40 inches in thickness. Depth to hard rock ranges from 2 feet to 10 feet or more. Willies soils occur with Louisburg, Wake, and Enon soils. They have a darker, more brownish color than the Louisburg and Wake soils And are less acid than those soils. Wilkes soils have a thinner solum than the Enon soils. Wilkes soils, 2 to 10 percent slopes (WwQ.—These soils are on small ridges and side sloes in the uplands. They have a yellowish -brown or grayish -brown to dark - brown surface layer of sandy loam to silt loam that is 3 to 12 inches thick and contains clayey spots in many places. The color of the subsoil ranges from brown or dark brown to gray and yellowish red. The subsoil is 8 to 36 inches thick. It ranges from sandy loam to clay loam in texture and from very friable to firm in consistence. Infiltration is good, and surface runoff is medium to rapid. The hazard of erosion is very severe. These soils are somewhat difficult to till, but they can be worked throughout a fairly wide range of moisture content. About two-thirds of the acreage is in forest, and the rest is in pasture or is cultivated. These soils are fairly well suited to many of the locally grown crops. Intensive practices that effectively control runoff and erosion are needed, however, if cultivated crops are grown. (Capa- bility unit IVe-3, woodland suitability group 12, wildlife suitability group 4) Wilkes soils, 10 to 20 percent slopes (WwE).—These soils are on side slopes that border upland drainageways. Their surface layer is yellowish -brown or grayish-browil to dark -brown sandy loam to silt loam and is 3 to 10 inches thick. In many places the surface layer contains clayey spots. The subsoil ranges from brown or dark brown to gray or yellowish red in color, from very friable to firm in consistence, and from sandy loam to clay loam in texture. Infiltration is good. Surface runoff is very rapid. These soils are mainly in forest, but a small acreage is in pasture. Because of the strong slopes and the bedrock near the surface in some places, the areas that have been cleared should be used only for pasture or for permanent hay crops. (Capability unit VIe-2, woodland suitability group 12, wildlife suitability group 4) SOIL SURV.VIY Wilkes sails, 20 to 45 percent slopes (WwF).----These soils are on side slopes bordering major drainageivays ill the uplands. They have a. suraace layer of yelkawlsh- rowlz or gnayish-brown. to dark -brown sandy loam to silt loam 3 to '$ inches thick. Their subsoil r,iiges from brown or dark brown to �raa,y or yellowish red in color, from very frialale to turn in consistence, and from sands, loam to clay loan) in texture. Infiltration is good. Surface runoff is very rapid. Practically all of the acreage: is in forest. Because of the strong .slopes and bedrock near the surface, these soils shoe, be );ept in forest. (Capability unit `1�IIe—1, woodland suitability group 12, wildlife suitability group ) Wilkes stony soils, 15 to 25 percent slopes (WxE).--The soils of this unit are on side, slopes that border major drainageways in the uplands. Their surface layer is yello- ish-brown or grayish -brown to dark -brown stony &mIdy loam 0 to 10 inches thick. Large stones occupy from 1 to 2 percent of the surface. The subsoil ranges from brown or (lark brown to gray or yellowish red in color, from eery friable to firm In consistence, and frons sandy loam to clay loam in texture. Infiltration is good. Surface runoff is eery rapid. Practically all of the acreage is in forest. Because of the strong slopes and bedrock near the snrfaace, these soils should renla.in in forest. (Capability unit: VIle--1, wood- land suitability group 12, wildlife suitability group =1) Worsham Series The Worsham series consists of nearly level andeptly sloping, deep, poorly drained soils of Piedmont up�ands. These soils occupy small areas throughout the count`', at the heads of drainaa,gew=ays, ora foot slopes, and in slight depressions. They have formed under forest in translo- cated rnaateriaal and in material that, weathered. from most kinds of rocks underlying this area. A. seasonally high water table is approxiinately at the surface. Natural fertility and the contout of organic matter are low, and perinea.bility is moderately slow. The available water c.apticity is indium, and the shrink -swell potential is moderate. Except. in areas that have received lune, these soils ire strongly acid- Response is fairly good if suitable applications of lime and fertilizer are made. The Worsham soils of Wake County are of only minor importance for farming. Sonne areas have been cleared and are used for pasture or waterways, but most, of the aaereaage, is in forest_ The areas that have been cleared and have then been allowed to revert to forest are in pines or in inixed pines and hardwood& representative profile of Worsham sandy loam in as wooded area 2 miles southl-. est of Wendell oil colinty road No. 23ri 8, one-fourth of a. r pile north on county road ilio. 1003, and 25 yards east of road 01--5 to 2 fiches, undecomposed forest litter. 02-2 inebes to 0, dark -brown, decomposed forest litter; part of litter is disintegrated, and hart is not disinte- grated; many fide and medium, woody roots. All --o to 2 slashes, gray (10YR 5/1) sandy loam ; -, ealc, medium and coarse, granular structure ; very friable when moist; many fine and medium, woody roots; common fine pores; very strongly acid; abrupt, smooth boundary. A121 -2 to 7 ruches, gray (10YR 5/1) sandy 1wim; weak, medium, granular structure, very friable whan rnolst ; common, fine and medium, woody roots; inaily fine pores; very strongly acid; abrupt, wavy txntndary. A2)> 7 to 11 inches, gray (10YR 6/1) sandy loam; weak, medium, granular structure; very friable when moist; common, fine, woody roots; common tiara laores ; strongly acid; abrupt, smrxoth boundary. BIg---11 to 13 inches, light brownish -gray (10YR 6/2) aaindy clary loam; common, medium, prominent, yellowish - brown mottle6 ; weak, medium and coarse, subangular blocky structure; firm when moist, slightly tat acky and slightly plastic when wet; common, fine, woody roots; coramo'll fine pores; strongly acid; abrupt, wavy` boundary. 1321tg 13 to 1S inches, gray (10YR 61/1.) heavy sauady clary loam; commoln, medium, prominent, strong -brown inot- t:1es; weaak, medium and coarse, subatngular blocky structure; firm when moist:, Sticky and 1}1.lst:lc when wet; few, fine, woody roots; fine pores; thin clay ill -ins on ped surfaces; strongly meld; abrupt, wavy bound- ary. 7322tg--18 to 2t3) inches, gray (10YR 6/1) heavy .:Mandy sixty loam; few, medium, prominent, strong-brovni and few, fine, prominent, yellowia la -red mottles; weak, niedium and coarse, subangular blocky strueture; firm when moist, sticky and plastic when wit; few fine pores; few thin clay films on ped a>urfaac<:=s; strongly acid; abrupt, smooth boundary. B23tg-26 to 38 inches, gray (10YR 6/1) light sandy clay; few, medium, prominent, strong• -brown and few, fine, 1)rolatialent yellowish -red mottles; weak, mLdivan, sub- rangular blocky straacture; firm when moist, .57.iohtly sticky and slightly plastic when wet; few fbie pores; few thin clay films on peri surfaces; fever snuill peb- bles; stroltgly aeld; abrupt, smooth boundary. 133g--38 to 45 iuchet? +, light -gray (10YR 7/1.) sandy loam; few, medium, prominent, brownish -yellow mottles; massive; friable when moist. slightly sticky and slightly plastic when wet; common fine pores; many fragments of feldspar; strongly acid. The A horizonw range from 8 to 20 biches in total thick- ness and from gray or very dark gray to grayish 1lrowtn or brown in color. The B horizons range from 20 to 50 inches in combined and from sandy clay loan or sandy loam to sandy clay in texture. The Bt horizons have as gray color in. 10YR and 2.,W hues. In many places the Tat horizons are mottled with vellowisli red to faaa.le yellow. The solum ranges .from 24 inches to 45 inches inn thickness. Depth to hard rock ranges from 5 to 1 or more feet. Worsham soil.,: occur with Colfax and Bibb soils_ They area more poorly drained than the Colfax soils und. llaave as flne.r textured subsoil than the Bibb soils. Worsham sandy loam (0 to 4 percent slope:) My)- - 'Ellis is the only soil of the Worsham series rziapped in Wake County. It occurs at the heads of draaialaa.gewllys, oil foot slopes, and in slight depressions ill the uplands. The surface layer is very dark: brown or brotivra- sandy loam 8 to 20 inelies thick. The subsoil is 21 to 10 inches thick and consists of gray, firm silty clay loam or sandy clay, with common mottles of strong brown to pale yellow. Infiltration is good, and surface runoff is slow- to ponded. Permeability is moderately slow. Where, this soil has been. drained, it is easy to keep in good tilt:h, but tillage may be restricted after hard rains. If this soil is cleared and properly drained, it is suitecl to corn, soybeans, and pasture. Most of the, acreage is in forest, but some of it, is cultivated or in pasture. (Carina -. bility unit. IVNv-1, woodland suitability group 2, wildlife, suitability group 3) WAKE COUNTY, NORTH CAROLINA Use and Management of the Soils This section discusses use and management of the soils for crops and pasture, as woodland, for wildlife, and for engineering. It does not give detailed information about management of individual soils. For specific suggestions, consult a representative of the local office of the Soil Conservation Service, the Extension Service, or the Agri- cultural Experiment Station. Use of the Soils for Crops and Pasture' This section has three main parts. The first discusses the system of capability classification. The second de- scribes the subclass and capability units in Wake County and gives general management suggestions for each capability unit. The third gives estimated yields at a high level of management for specific crops on each soil. Capability groups of soils Capability classification is tho gsouping of soils to show, in a general way, their suitability for most kinds of farming. It is a practical classification based on limi- tations of the soils, the risk of damage when they are used, and the way they respond to treatment. The classi- fication does not apply to most horticultural crops, or to rice and other crops that have their special require- ments. The soils are classified according to degree and kind of permanent limitation, but without consideration of major and general expensive landforming that would change the slope, depth, or other characteristics of the soils; and without consideration of possible but unlikely major reclamation projects. In the capability system, all kinds of soils are grouped at three levels, the capability class, subclass, and unit. These are discussed in the following paragraphs. CAPABILITY CLASSES, the broadest grouping, are desig- nated by. Roman numerals I through VIII. The num- erals indicate progressively greater limitations and nar- rower choices for practical use. The classes are defined as follows: Class I. Soils have few limitations that restrict their use. Class II. Soils have some limitations that reduce the choice of plants or require moderate conserva- tion practices. Class III. Soils have severe limitations that reduce the choice of plants, require special conserva- tion practices, or both. Class IV. Soils have very severe limitations that re- strict the choice of plants, require very careful management, or both. Class V. Soils subject to little or no erosion but have other limitations, impractical to remove, that limit their use largely to pasture, range, wood- land, or wildlife food and cover. (None in Wake County) Class VI. Soils have severe limitations that make them generally unsuited to cultivation and limit aJ. E. Poiaocx, conservation agronomist, Soil Conservation Service, and T. J. WwGms, work unit conservationist, Soil Con- servation Service, assisted in preparing this section. 65 their use largely to pasture or range, woodland or wildlife food and cover. Class VII. Soils have very severe limitations that make them unsuited to cultivation and that re- strict their use largely to grazing, woodland, or wildlife. Class VIII. Soils and landforms have limitations that preclude their use for commercial plant production and restrict their use to recreation, wildlife, or water supply, or to esthetic pur- poses. (None in Wake County) CAPABILITY SUBCLASSES are soil groups within one class; they are designated by adding a small letter, e, W, s, or c, to the class numeral, for example, IIe. The letter e shows that the main limitation is risk of erosion; w shows that water in or on the soil surface interferes with plant growth or cultivation (in some soils wetness can be partly corrected by artificial drainage) ; s shows that the soil is limited mainly because it is shallow, droughty, or stony; and c, used in some parts of the United States but not in Wake County, shows that the chief limitation is climate that is too cold or too dry. In class I there are no subclasses, because the soils of this class have few limitations. Class V (none in Wake County) can contain, at most, only subclasses indicated by to, s, and c because the soils in it are subject to little or no erosion, though they have other limitations that restrict their use largely to pasture, range, woodland, wildlife, or recreation. CAPABILITY UNITS are soil groups within the subclasses. The soils in one capability unit are enough alike to be suited to the same crops „and pasture plants, to require similar management, and to have similar productivity and other.. responses to, management. Thus, the capability unit is a convenient grouping for- making many state- ments about management of soils. Capability units are generally designated by adding an Arabic numeral. to the subclass•symbol, for example, IIe-1 or IIIw-1. Thus in one symbol, the Roman numeral designates the capa- bility class or degree of limitation, and the small letter indicates the subclass, or kind of limitations as defined in the foregoing paragraph. The Arabic numeral specif- ically identifies the capability unit within each subclass. In the following pages, the capability units in Wake County aredescribed and suggestions for the use and management of the soils . are given. The names of the soil series represented are mentioned in the description of each capability unit, but this does not mean that all the soils of a given series appear in the unit. To find the names of all of the soils in any given capability unit, refer to the "Guide to Mapping Units" at the back of this survey. CAPABILITY UNIT I-1 Only one soil, Norfolk loamy sand, 0 to 2 percent slopes, is in this capability unit. This soil is on Coastal Plain uplands and is nearly level and well drained. It has a surface layer of very friable loamy sand, 8 to 20 inches thick, and a subsoil of friable sandy loam to sandy clay loam. Natural fertility and the content of organic matter are low. Permeability is moderate, and the available water capacity is medium. Reaction is strongly acid. This soil is easy to keep in good tilth, can be worked through- DN Soil. SURVEY out; a wide rarrgo of moisture, content, amid has a. Very deep effective. root zone. Response is good if suitable amomits of lime and fertilizer are applied. A small acreage is in forest but thus soil is well suited to all. the crops grotvii locally aiid iii used mainly for tobaacco, cotton, and other row crops. Clean -tilled crops can be grown intenslively without serious risk of erosion. Returning all crop residue to the soil helps to inain- tain the content, of organic matter. Perennial grasses included in the cropping system help to reduce losses of soil and water and to make this soil more productive. CAPABILITY UNIT Ile—1 This capability unit consists of well-drained,ently sloping soils on t1e, Piedmont and Coastal Plain uplands. These soils are in the rippling, Cecil, Durham, Ftweville, Granville, 1%,ladison, 1Vlayodan, Norfolk, Orangeburg, and Wedowee series. They lin,ve a surface layer of loamy sand to fine sandy loam that in places contains gravel. The subsoil ranges from friable sandy loam to firm clay. In some places the plow pryer is ii, mixture of the remaining original surface soil and of material from the subsoil; in other places the subsoil has been exposed through erosion. Natural fertility and the content of organic matter are low. Permeability is moderate, and the available water capacity is medium. Reaction ranges from medium acid to strongly acid. The effective root zone is shallow to very- deep. Response is good if suitable amounts of lime and fertilizer are applied. The uneroded. soils are in good filth and can be worked throughout a wide range of moisture content. The eroded soils are in fair tilth and can be worked within only a somewhat narrow, range of moisture content. If the eroded soils are worked when too «yet or too dry, they become cloddy and a crust, forms on the surface. Standsof crops grown on the eroded soils are less uniform than those grown on the uneroded soils, even though the amount of rain is normal. Further ero- sion is as moderate hazard in cultivated area's. About two-thirds of the acreage is cultivated or in pasture, and the rest is in forest or community develop- ments. The soils are well suited to rirost of the crops grown in the county. They are especially well suited to tobacco but are not well suited to alfalfa, white clover, and red clover. Eiinofi and erosion can be reduced. by returning all crop residue to the soils; by protecting the soils -, nth a close -growing crop 25 to 50 percent of the, time; and by tilling along the contour, practicing striperoppnag, and providing terraces and diversions. Field borders, natural. draws, and other outlets needed for the disposal of run - oft should be seeded to perennial grasses, preferably of a sod -forming type. Exain Iles of suitable crol7ping sys terms are 2 or more years old close -growing crops followed by 1 or 2 years of a, row crop; or 1 year of a close - growing crop followed by 1 year of a row crop. Perennial grasses are the most suitable close -growing crop. CAPABILITY UNIT Ile -2 This capability unit consists of well -drained, gently sloping Georgeville, Herndon, Lloyd, and May odan soils on Piedmont, uplands. These soils have a surface layer of loam or silt loam that in places contains gravel. The sub- soil ranges from friable silty clay loam to firm clay. In some places the plow layer is a mixture of the remaining original surface soil and of material fron7 the subsoil; in others the subsoil has been exposed through erosion. Nataural fertility and the content of organic matter are low. Permeability is moderate, and the available water capacity is medium. Reaction ranges frons slightly acid to strongly acid. The effective root zone is shallow to deep. Response is good if suitable amounts of lime and fertilizer are applied. The uneroded soils are in good tilth and can be worked throughout a fairly wide range of moisture content. The eroded soils are in fair H f i and can be worked within only a somewhat narrow rarrgo of moisture content. Stands of crops grown on the eroded soils are not, uniform, even though the amount of rain is normal. The hazard of further erosion is moderate, in cultivated areas. About two-thirds of the acreage is cultivated or in pasture; the rest is in forest or community developments. The soils are well suited. to most of the crops grown locally, but they are less well suited to tobacco than the soils in capability units I-1 and He -4. Minoff and. erosion can be reduced, soil tilth improved, and productivity increased by returning all crop residue to the soils; by protecting the surface of the soils with a close -growing crop 25 to 50 percent of the time; and by tilling on the contour, practicing striperopping, and providing terraces and diversions. Field borders, natural draws, and other outlets needed for disposing of runoff should be seeded to perennial grasses, preferably of a sod -forming type. Examples of suitable cropping systems are 1 or more yearns of a close-grotiving crop followed by 1 or2 years of a row crop, or 1 year of i close -growing crop followed by 1 year of a roiv crop. Perennial grasses are the most suitable close -growing crop. Good soil strue - ture can be maintained through minimum t.illa,ge. CAPABILITY UNIT ire -3 This capability unit consists of well drained or mod- erately well drained, gently sloping soils of the Creed - moor°, Enon, Helena., Vance, and White, Store series. These soils are on the Piedmont uplands. They have <a, surface layer of sandy loam to silt loam and a subsoil of firin or very firm silty clay loam to clay. .,Lir soirre places the plow layer is a mixture of the remaining origi- nal surface soil and of material from the subsoil. In others, the subsoil is exposed. Natural fertility is low to Tnedium, and the coritent, of organic matter is low. Permeability is slow, and the available water capacity is medium to high. Reaction ranges from slightly acid to very strongly acid. The effective root zone is shallow to deep. Response is good if suitable applications of lime and fertilizer are made. The uneroded soils are in good tilth, but tillage after heavy rains is restricted because of the slowly perrne.able subsoil. The eroded soils are in fair tiltl, but if tilled when too wet or too dry, they become cloddy and a crust forms on the surface. Stands of crops are not uniform on the eroded soils, even though the amount of rain is normal. Minofi is medium, and the, hazard of further erosion is moderate in cultivated areas. About two-thirds of the acreage is cultivated or in pasture; the rest is in forest. The soils of this unit are WAKE COT NTY, NORTH CAROLINA fa.irlg ww e�11 suited to ntotit c:3f the crops grown 1oca,lly, but the Enon soils are not well suited to tobacco. Runoff and erosion can be reduced„ soil tilth improved, and productivity increased by returning all crop residue to the soils; by protecting the surface of the soils ww i la a close gr°ow�-ing crop frorar. 25 to W percent, of the time; and by tilling on the contour, pr a•cticing stri propping, and providing diversions or terraces. Field borders, natural draws, and other outlets needed for disposing o1 runoff should be seeded to perennial grasses, preferably of a sod -forming typo. Examples of suitable cropping yste.ms are 2 or more years of closegrowving crops fol- lowed by 1 or 2 years of a row crop ; or 1 year of a close-- crop lose- crop followed by I year of as row crop. Peren- nial grasses are the most suitable close -growing crop. Good soil structure can be. maintained t1'isough minimum til1 a.ge. CAPABILITY UNIT IIw-1 This capability unit consists of moderately well trained and somewhat, poorly drained, nearly level or ;eptly sloping soils on stream terraces and uplands of Ile Coastal Plain. Theses soils acre in the Altavista,, Golds - .)oro, and Lync-hbim Series. They have a. surface layer of Sandy loam or fine sandy loam and a subsoil of friable ;andy loam to firm clay loam. Natural fertility anti the c:ont.ent, of organic matter ire low, the available water capacity is niediurn, and. )ermeability is moderate. These soils are in good filth tad have a very deep or deep effective root zone. Reac- ion ranges from medium acid to strongly acid. Response s good if suitable applications of lime- and fertilizer are na:de. The Altavista soil is flooded infrequently, but. looding does not last long. Most of the acreage is cultivated or in pasture, and poly a small acreage is in forest. These soils are well nited to most of the crops grown locally, but they are, of well suited to alfalfa, red clover, and orchardgr<ass. Tliere are, no serious hazards if these soils are used utensively for clean -tilled crops, but a moderately high ,rater table affects nianagernent, and is a soil lirnit.ation o some uses. Sonne drainage is generally needed if obatcco and other specialized crops are grown. Row crops an be grown year after year if all crop residue i, (tabled to the :;oi°s. '1lw content of org:'artic matter and aavorable soil tilth can be maintained if close -growing rops, preferably perennial grasses, are grown every Cher year or 1 year out of 3. CAPABILITY UNIT IIw-2 This capability unit consists of well drained and mod- eately well drained, nearly level Congaree soils on the ood plains of streams. These soils have a, surface layer f fine sandy loam to silt loam, underlain by friable or ery friable fine sandy loam to silt- loam or silty clay )am. -Natural fertility and tide content of organic matter ar°e >w, the, available water capacity is medium, and perme- aility is moderate to moderately rapid-. These soils are r good tilth and have a• deep effective root zone. They re strongly acid. Response is good if suitable applica- ons of lime and fertilizer are made. Most of the acreage is cultivated or in pasture, but a nail acreage is in forest. These soils are well suited to HE most of the crops g -rows locally. Corn, small grra.ins, ber-u mudagrass, fescue, and johnsongrass grow well on them. Flooding is the only serious hazard if these soils are cultivated intensively. In solve a.reaas, however, simple dradnage is needed to improve small wvet spots. If all crop residue is returned to the soils, row crops can be grown year after year. The soils can be kept productive, and the content of organic matter and good soil tilth can be maintained if~ close -growing crops, preferably perennial grasses, are grown every other ,year or I year out of 3. CAPABILITY UNIT II6-I This capability unit consists of somewhat excessively drained, nearly level and gently sloping INTagrarn soils orr Coastal Plain uplands. Viese soils have. a. surface layer of 'loamy sand, 20 to 30 inches thick. and a snbso�il of ver;v friable sandy loam to friable sandy clay loam. Natural fertility and the content of organic naatt:er• are low or very low. The available water capacity is low, and permeability is moderate. These soils are in good filth, caai be, tilled throughout a wide range of moisture content, and have a. very deep effective root zone. They are droughty and highly susceptible to leaching, however, and are medium acid to strongly acid. Response is good if suitable applications of lime and fertilizer are made. Most of the acreage is cultivated or in pasture, but a, small acreage is in forest. These soils are fairly well suited to most of the crops grown locally, but crop resi- due and other kinds of organic, matter burn out rapidly. 11 cropping system that adds a large amount of long- lasting crop residue is needed. Examples of such a crop- ping systerrl are 2 car more years of perennial grasses or legumes followed by a row crop grow.ra for 1 or 2 years; or I or more years of a dense stand of annuals followed by a row crop grown for 1 year. Tillage should be done on the contour and kept to a minimum, terraces or diver- sions are needed, and striper°opping is desirable on the sloping soils (fig. 11). Natural draws and other outlets for disposal of excess surface. wa-ter ought, to be seeded to perennial grasses, preferably of a sod-fornung type. Fertilizer, especially nitrogen, should be added in split application. CAPABILITY UNIT Me -1 Well -drained, sloping soils of the Piedmont and C onsta.l. Plain uplands nualce up this capability unit. These soils are in the Appling, Cecil, Durham, Vaceville, Granville. Madison, 11laayodaan, Norfolk, Orangeburg, and Wedowee series. They have a surface layer of loamy sand to fine sandy loam and. a. subsoil of friable sandy loans to firan clay. In places the plow layer is a, mixture of the reniain- ing original surface soil and of. 3naterial from the sub- soil. In some: spots the subsoil has been exposed, through erosion. In places these soils contaija gravel th t inter- feres with tillage. Natural fertility and the content of organic matter ,ire low. Permeability is moderate, and the available water capacity is medium. Reaction is medium acid to strongly acid. The, effective root zone, is shallow to very deep. Response is good if suitable applications of Lippe arad fertilizer are made. The uneroded soils are in good filth and can be worked throughout it wide range of slroisture content. Tilth is only fair in t•lae eroded soils, and those 6S SOIL SURVEY Figure 11. --Contour striperopping of corn and fescue. The soil on the far side of the field is Wagram loamy sand, 2 to 6 percent slopes; that in the foreground is Wagram loamy sand, 6 to 10 percent slopes. soils can be tilled within only a fairly narrow range of moisture content. A crust forms on the eroded soils, and those soils become cloddy if worked when too wet or too dry. Stands of crops on the eroded soils are not uniform, even though the amount of rain is normal. Erosion is a severe hazard in the cultivated areas. About one-third of the acreage is cultivated or in pas- ture; the rest is in forest or in community developments. These soils are well suited to most of the crops grown locally. Erosion and losses of water can be reduced, soil tilth can be improved, and productivity and the content of organic matter can be increased by returning all crop residue to the soils, by protecting the soils with a close - growing crop 50 to 75 percent of the time, and by tilling ®11 the contour, practicing striperopping, and installing terraces or diversions where needed. Natural draws or waterways, the borders of fields, and other outlets needed for disposing of runoff should be seeded to perennial grasses, preferably of a sod -forming type. A suitable cropping system is 2 or more years of crops that pro- tect the soils from erosion followed by 1 year of a row crop; or 2 years of crops that protect the soils from ero- sion followed by 2 years of row crops. Perennial grasses are the most suitable crop to protect the soils from erosion. CAPABILITY UNIT IIIe-2 In this capability unit are well-drained,ently sloping and sloping soils of the Cecil, Georgeville, Herndon, Lloyd, and Mayodan series. These soils are on Piedmont uplands. They have a surface layer of loam or silt loam to clay loam and a subsoil of friable silty clay loam to firm clay. The amount, of gravel in some places is great enough to interfere with tillage. The plow layer is a mix- ture of the remaining original surface soil and of mate- rial from the subsoil; in some spots the subsoil has been exposed through erosion. The Cecil soil is severely eroded. Its surface layer is mainly material from the subsoil, but it contains some material from the original surface layer. Natural fertility and the content, of organic matter are low. The available water capacity Is medium, and permeability is moderate. The uneroded soils are in good tilth and can be worked throughout a fairly wide range of moisture content. Tilth is fair to poor in the eroded soils. A crust forms on the surface and the eroded soils WAKE COUNTY, NORTH i ROLIMI become cloddy if they are, worked when too wet; or too dry. Stands of crops on the eroded soils are not uniform, even though the amount of rain is normal. Erosion is a, severe hazard in the cultivated areas. The effective root zone ranges from deep to shallow, and reaction ranges from slightly acid to strongly acid. Response is good if suit- able applications of lime and fertilizer are made. About one-third of the acreage is cultivated or in pas- ture, and the rest is in forest or community development. These soils are fairly well suited to most of the crops grown locally and are well. suited to grasses, legumes, and small grains. Erosion and losses of water can be reduced, tilth can be. improved, and productivity and the content; of organic matter can be increased by returning all crop residue to soils; by protecting the soils with a close -growing crop 50 to 75 percent of the time,*, and by tilling on the con- tour, practicing striperopping, and installing terraces or diversions where needed. The borders of fields, natural draws, and other outlets needed for disposing ofrunoff should be seeded to perennial grasses, preferably of a sod -forming type. A suitable cropping system is 2 or more years of a crop that protects the soils frons erosion followed by 1 year of a row crop; or 3 or more years of ^Tops that protect the soil from erosion followed by 1 or -ears of a row crop. Perennial grasses are the most suitable crop to protect the soils from erosion. CAPABILITY UNIT IIIe-3 This capability unit consists of well drained and mod- Araxely well drained, gently sloping and sloping soils of `-lie Creedmoor, Enon, Helena. prance, and White Store tieries. '.These soils are on Piedmont uplands. They have a surface layer of sandy loam to silt loam and a subsoil �)f firm or very firm silty clay loam to clay. In places the plow- layer is a mixture of the rema,iraing original surface ;oil and. of material from the subsoil; in spots the sub - ;oil has been exposed through erosion. Natural fertility is low to medium, and the content of )rganie matter is low. Permeability is slow, and the, available, water ca-pac.ity is medirtm to high. Reaction rouges from slightly acrd to very strongly acid. The affective root zone is shallow to deep. Erosion is a severe aaizard in cultivated areas. The uneroded soils are in �000d. 'tilth, but tillage is restricted after heavy rains weause of the slowly permeable subsoil. Tilth is fair in ;lie eroded soils, but a crust fortes on the surface in(]. the, ,coded soils become, cloddy if they are. worked when toes )vet, or too dry. Stands of crops are not uniform on the =roiled soils, even though the amount of rain is normal. rtbout one-third of the acreage is cultivated or in pa.s- =ure, and the rest is in forest. The uneroded soils are well mit,ed to the crops grown locally; the eroded soils are )illy fairly well. suited. Erosion and losses of water can be reduced, soil tilth panbe, imps°owed, and productivity and the content of )rga-nie matter can be increased by returning all crop ~esidue to the soils; by protecting the soils with a close- -,rovving crop 50 to 75 percent of the time; )incl bpr, �iciiig corrtonr tillage, striperopping, and installing ter - We s or diversions where needed. Borders of fields, natural draws, and other outlets needed for disposing of 11111off should be seeded to perennial grasses, preferably Mi of a, sod -forming type. A suitabla cropping system for these soils is 2 or more years of a, crop that protects the soils followed by 1 of, 2 years of a rove crop. Perennial grasses are the most suitable crop to protect the soils from erosion. CAPABILITY UNIT Hf" Well drained to somewhat excessively drained, gently sloping Louisburg and Wedowee soils are in this capabil- ity unit.. These soils are on Piedmont uplands. They have a surface layer of loamy sand or sandy loam and a highly variable subsoil. In places the plow layer is a mixture of the remaining original surface soil and of material from the subsoil; in some spots the subsoil is exposed. Natural fertility and the content of organic natter are love. Permeability is moderate to rapid, and the avail- able water capacity is Iow to rnednrm. Reaction is strongly acid. The effective root zone is shallow to mod- erately deep. Response is good if suitable applications of lime and fertilizer are made. The soils in this unit are, generally in good tilth, but stones are near the surface in some areas. Some of the soils are eroded, and further erosion is a severe hazard. About three-fourths of the acreage is in, forest; the rest is in pasture or cultivated crops. These soils are poorly suited to most of the crops grown locally. If man- agement is good, however, tobacco of good quality can be grown on the uneroded, gently sloping soils. The soils are suitable for pasture, hay, or trees, and they can be used for recreation or as habitat for wildlife. Erosion and losses of water can be reduced, the con- tent of organic matter can be increased, and productivity and soil tilth improved by returning all crop residue to the soils; by protecting the soils with a close -growing crop about 75 percentof the time; and by practicing contour tillage and st,riperopping and installing diver- sions. A suitable cropping system Is 3 or more years of crops that protect the soils from erosion followed by 1. year of a row crop; or 2 years of crops that protect the soil from erosion followed by 1 year of a row crop. Perennial grasses are the most suitable crop for- protect- ing the, soils from erosion. The borders of fields, natural draws, and other outlets needed for the disposal of r-aan- off should be seeded to perennial grasses, preferably of a sod -forming type. CAPABILITY UNIT IIIe_,r, Only Wagrarn loamy sand, 0 to 10 percent, slopes, is in this capability unit. It is a somewhat excessively drained soil on Coastal Plain uplands. The surface laver is very friable loamy sand, 20 to 30 inches thick, and the subsoil is very friable sandy loarn to friable sandy clay loam. ?natural fertility and the content of organic matter are love or very low. The available water capacity is low, and permeability is moderate. This soil is in good tilth anal can be worked throughout a Avide range of moisture con. tent. It is droughty, however, and the hazard of erosion is severe if cultivated crops are, gr•ovvii. The effective root zone is very deep. 'Reaction is medium acid. to very strongly acid. Plant nutrients leach out, rapidly, but; response is good if suitable applications of .lime and fertilizer are made. This soil is fairly well suited to bermudagrass and to most of tlic. other crops grown locally. It. is poorly suited ME SOIL SITRVEY to alfalfa, white clover, and red clover. Erosion and losses of water taxa be reduced, soil tilth improved, and produc- tivity and the content, of organic matter maintained by returning all crop re.sidne. to the soil; by growing soil - conserving crops 50 to 75 percent of the time; and by practicing contour tillage and triperoppirnn. A suitIlde cropping systema is 2 or more years of close -growing crops, 1 year of a row crop followed by a cover crop, and then another year of a row crop; or 1 or more, years of a. close -growing crop followed by 1 year of a row crop. Perennial grasses are the most suitable close -grow- ing crop. Natural draws, the borders of fields, and other outlets needed for disposing of rnnoif' should be seeded to a. perennial grass, preferably of a sod -forming type. Liberal amounts of fertilizer, in split applications, are needed. CAPABILITY UNIT IIIsv--I This capability unit consists only of C'hewa,cla soils. These soils are somew-hat, poorly drained and nearly level, and they occur on the flood plains of streams. They have a surface layer of sandy loam to silt. loam, underlain by friable or very friable sandy loam to silt loam or clay loam. Natural fertility and the content of organic matter ,ire low. The available water capacity is naedinm, and permeability is moderate to moderately rapid. These soils are in good filth and have asleep effective root zone. They are strongly acid, bit response is good if suitable applications of lime diad fertilizer are made. The ;oils are subjectto overflow, and wetness is a severe hazard. Alost of the acreage is in forest, but a small acreage is cultivaa,tecl or in pasture. These soils are fairly well suited to corn, oats, white clover, dallisgrass, fescue, and other crops that are at least fairly tolerant of excess water. Thur are better suited to pasture than, to field crops. Artificial drainage is needed for most crops. The content, of organic, matter can be maintained and tilth can be improved by returxaing large quantities of crop residue to the. soils. A suitable cropping system is 1 or more years of a, crop that provides a dense cover followed by 1 or 2 years of a row, crop. CAPABILITY UNIT IMA --2 This capability unit consists of somewhat, poorly drained, nearly level and gently sloping soils of the Au- gusta., Colfax, Mantaclaie, and Wahee series. These soils are in depressions and on foot, slopes, stream terraces, and Piedmont and Coastal Plain upla-nds. They have a surface layer of sanely loam to silt loam, underlain by sandy loaan to very firm clay. Natural fertility is med.itam to .low, a:nd the content of organic matter is low. The available water ca,pa,city is medium, sand permeability is moderately rapid to slow. These soils are, in good to fair tilth and have a deep or moderately deep effective root zone. They are medium acid to very strongly acid. Plant naatrients leach out. rapidly, but response is good if suitable applications of ,Time and fertilizer are made. These soils are. susceptible to flooding, and wetness is a severe hazard. Most of the acreage is in forest, but a small acreage, is cultivated or in pasture. These soils are of limited suitability for crops, but they can be used for corn, oats, rye, white clover, soybeans, annual lespedeza, fescue, and dallisgrass. They aree betted` suited to pastnx°e than to field crops. Drainage and good management are. needed. The content, of organic matter can be maintained and the structure of the soils can be improved by returning all crop residue, to the soils. A suitaable cropping system is oz more years of pastaare followed by 2 Fears of Clean - tilled crops; or 1 or more years of a crop that protects the soils, followed by 1 year of a, clean -tilled crop. CAPABILITY UNIT 111w--3 Pains fine- sandy loam is the only soil in this capability unit. It is poorly drained and nearly level, and itoecnrs in depressions on Coastal Plain uplands. The surfaco layer is very friable fine sandy loam, and the sul_asoil is friable sandy loam to firm clay loam. Natural fertility is low, and the content of organic m clatter is nxediu. Peraneability is moderate, and the available water capacity is medium. This soil is in good tilth and has a very deep effective root zone. React -ion is very strongly acid or strongly acid. Response is good if suitable applications of Bine and fertilizer are made. Wetness is a. severe hazard where field crops, pasture phnits, or hay are grown Most of the acreage is in forest, but a, small' aereaage is cultivated or in pasture. This soil is limited in suita- bility for crops. 1,17here it has been drained, however, it is fairly well suited to corn, fescue, dallisgrass, white, clover, soybeans, annual lespedeza, and oats, though it requires good management. Iirainage is the major requirement if this soil is farmed. 11"here. drainage is provided, row crops may be grown year after year, but all crop residue should be returned to the soil. Productivity, a desirable content of organic neat -ter, and good tilth can be, maintained if per- ennial grasses and legumes are included in tlae cropping system, and if they analce up from 25 to eiO percent of the cropping sequence. CAPABILITY UNIT IIIc -1 Only lVagram-Troup sands, a to 4 percent slopes, is in this capability unit. It consists of somewhat exees- sivel y drained soils on Coa.�fal Plain uplands. The surface layer of these soils is Loose sand, 30 to 60 inches thick:, a.nd the subsoil is very friable sandy loam to friable; sandy clay loam. Nataral fertility, the content of organic. matter, and the available water capacity are low or very low. Per- meability is moderate to rapid. These soils are in good filth and have a very deep effective root, zone. They are; medium acid to very strongly acid. Response is good if suitable applications of lime and fertilizer -ire made. About; two -third of the acreage is cultivated or iii pastures the rest is in forest. Even though these soils are, ina,naged properly, they are not well suited to Most of the crops grown locally. They are more suitable for use as recreational areas or for the grooving of peaches and watermelons than for growing field crops. Runoff and erosion can be reduced, soil tilth improved, the content of organic am:ttor maintained, and productiv- ity increased by returning all crop residlae to Mae soils. Crop residue and other organic xuatter lima out of the soils rapidly. The surface needs to be protected by a close -growing crop, preferably a perennial crop, at least WAKE COUNTY, NORTH CAROLINA 50 percent of the time,. A- suitable cropping syst.e-in is one that adds a large amount of durable residue and that consists of crops grown ill strips. Examples of suit-- a:ble cropping systems are 3 or niore years of perennial grasses or legumes followed by 1 or 2 years of a. row crop, or 2 years of a crop that provides a. dense cover follo�4,ed by 1 year° of u- row crop. 1.11 1IRLjor drar17s and field borders used for disposing of runoff' ought to be seeded to a perennial grass. Fertilizer, especially nitro gen, should be added iii split, applications. CAPABILITY UNIT IVe-1 This capability imit consists of well -drained, strongly sloping Appling, Cecil, Granville, Aladisorr, Mayodar.t., and Wedowee soils on Piedniont, uplands. These soils Nave a surface laver of sandy loam and a subsoilf o friable sandy- clays loam to firm clay. In some eroded areas, the plow layer is a- mixture of the remaining origi- nal surface soil and of material from the subsoil. In others the subsoil has been exposed through erosion. Fur- ther erosion is a severee hazard in the. cult -iv aced areas. Natural fertility a.nd the content of orgaaaie. matter are. low. Permeability is moderate, and the available water capacity is medium. Reaction is mediums acid to strongly acid. The effective root. zone is shallow to deep. Response is good if suitable applications of lime and fertilizer are iiiad.e. Tilth of the rrneroded soils is good; that of the eroded soils is only fair. The eroded soils can be. tilled tirithin only a, fairly narrow i-a.nge of moisture content. A crust forms on the surface, and the eroded soils become cloddy if worked when too wet or too dry. ,Stands of crops are not auriform on the eroded soils, even though the miomat of rain is normal. About two-thirds of the acreage is ill forest or cont- anrurity developments; the rest is cultivated. or in pasture. Given proper management, these soils are fairly well ;cited or well suited to most of the crops grown locally. Their use for crops is limited, however, by low mtural Fertility and susceptibility to leaching, bosses of soil and sva.ter t"aa.]7 be reduced, soil tilth improved, and prodtretiv- ity and the content of organic matter increased by pro- -ect-ling the soils with a close -growing crop at least Til percent of tlae thnen by tilling along the contour; and >y seeding field borders, providing (Iiversions, prtldie.ng tripexoppiiiig, and returning all crop residue to the soils. ferennia,l brasses are the most, suitable close -growing trop. Natural draws and other needed outlets for dis )ositig of runoff should be seeded to perennial grasses, ireferably of a sod-forrning type. A suitable cropping system is years or more of perennial grasses or legumes °ollowed by 1 year of a row crop. CAPABILITY UNIT lVe-2 This capability unit consists of a well-draitied, Sloping �_nd Strongly sloping Cecil, Georgeville., Iferndon, Lloyd, ..nd Mayodan soils on Piedmont uplands. 'These soils ia.ve a surface layer of loam or silt loan. to clay loans and a subsoil of friable, silty clay loam to firm clay. Most if the soils are eroded, and. the Cecil soil is severely roded. Further erosion is a severe hazard in cultivated rears. In some eroded areas, the plow layer is a mixture I the rerttaiiiing original surface soil and of material rotu the subsoil; in others the subsoil is exposed. The 5,35 -402-70— 6 M surface layer of the Cecil soil is mainly material from the subsoil, but it, contains a small. a -mount of material from the original surface layer. In places the soils in this unit contain enough gravel to interfere with tillage. Natural fertility and the content, of organic matter rare low. Permeability is moderate, and the available water capacity is medium. Reiction is slightly acid to strongly acid. The effective root zone is shallow to deep. Response is good if suitable. applications of lime incl fertilizer are - made. The uneroded or only slightly eroded soils, such as the Mayodan, are iii good. tilth, but (lie, eroded soils are in fair t.o poor filth. A crust forms oil the surface of the eroded soils, and those soils bec„ome cloddy if worked when too wet or too dry. Iv,en thougli the amount of rain is normal, stands of crops are not, uniform on the eroded soils. About, two-thirds of the acreage is in forest or ill corn munity developments; the rest, is cultivated or ill paas- trrre. Given proper management, the soils of this uttat are fairly well suited to most of the crops grown locally. They ,ire better suited to pastime and hay, however, than to field crops. Erosion and losses of water can be reduced, soil tiltla improved, and productivity and the content of or,muLic nrat.ter increased by returning all crop residue to th.e soils; by protecting the soils with aa. close -growing crop at least 75 percent of the tine; and by tilling ort the cora- tour, psraeticutg striperopping, and establishing diver- sions. Natural draws, the borders of fields, antl other outlets nee.decl for disposing of runoff should be, seeded to perennial grasses that produce sod. Suitable cropping systems are 3 or more years of perennial grasses or leg- urraes followed by 1 year of it row crop; or 4 or snore years of pereiniial grasses or legalities, followed by 2 year-_-, of row crops. CAPABILITY UNIT Ive--3 This capability unit consists of well -drained and some- what excessively drained, nearly level to strongly sloping Creedmoor, El on, Helena, Louisburg, Pinkston, Wake, Wedowee, White. Store, and 11rilkes soils on Piedmont uplands. These soils have a, surface layer of loamy sand to silt lourn and a subsoil of friable loamy sand to very firm clay. In some places the plow layer is 1, mixture of the rernatinkig original surface soil acid of mater” l from the subsoil, Ill other places the, subsoil is exposed. lit plaaees these soils corttarin gIM11 land stones in tunounts' thatinterfere, with tillage. some soils contai t rock oaat- crop:rs (fig. 12,). Nawral fertility is low to medium, and the content of organic matter is low. Permeabili-tv is slow to rnoderately� rapid, and the a -;11hcble water capacity is very low to high. Reaction is slightly acid to very strongly acid. The effective root sone is ver %, shallow to deep. Response is good if suitable applications of lime and fertilizer 'a.re made. Soraree of the soils are eroded-, and further erosion is a very severe liazard if those soils are cultivated. The uneroded soils are in good filth, but tilth of the eroded soils is fair to poor. If flip eroded soils are worked wheat too wet or too drv, at, exiist tends to form on the Surface and these soils become cloddy. On the eroded soils, stands of Crops are not, uniform, evert though the amount of rain is iiornial. im SOIL SURVEY Figure 12.—Pasture of poor quality on Wake soils, 2 to 10 percent slopes, in capability unit M_3. Rock outcrops are common in some areas of these soils. About three-fourths of the acreage is in forest; the rest is cultivated or in pasture. The uneroded or only slightly eroded soils in this unit are fairly well suited to well suited to most of the crops grown locally. They are better suited to pasture and hay than to cultivated crops. The eroded soils are poorly suited or only fairly well suited to the locally grown crops. Erosion and losses of water can be reduced, soil tilth improved, and productivity and the content of organic matter increased by returning all crop residue to the soils; by protecting the soils with perennial grasses at least 75 percent of the time; and by tilling on the con- tour, practicing striperoppir and establisliina diver- sions. Natural draws, the borders of fields, and other out- lets needed for disposing of runoff should be seeded to perennial grasses that produce sod. Suitable cropping systems are 3 or more years of perennial grasses or leg- umes followed by 1 year of a row crop; or 4 or more years of perennial grasses or legumes followed by 2 years of row crops. CAPABILITY UNIT IVw-1 This capability unit consists of poorly drained, nearly level or gently sloping soils of the Plummer, Roanoke, Wehadkee, Bibb, and Worsham series. These soils are in upland depressions, on the flood plains of streams, and on stream terraces. Their surface layer ranges from sand to silt loam, and their subsoil ranges from friable sandy loam to very firm clay. Natural fertility is very low to medium, and the con- tent of organic matter is low to moderate. Permeability is slow to rapid, and the available water capacity is low to medium. Wetness is a very severe hazard. Reaction is strongly acid to very strongly acid. Response is fairly good if suitable applications of lime and fertilizer are made. These soils are in good tilth, and they have a mod- erately deep or deep effective root zone. Most of the acreage is in forest, but a small acreage is cultivated or in pasture. These soils have a narrow range of suitability for crops, and as a rule, they are poorly- suited to row crops. Where these soils have been drained, they are fairly well suited to white clover, annual lespe- deza, fescue, and dallisgrass. Pastures are fair to good in areas that have been drained. A high water table, overflow, and a lack of outlets are limitations to the use of these soils for crops. A complete drainage system is needed for all areas intended for pas- ture and field crops. Proper amounts of lime and a large amount of a suitable fertilizer are also needed. CAPABILITY UNIT IVs -1 This capability unit consists of somewhat excessively drained, nearly level Buncombe soils on first bottoms. The surface layer and the subsoil of the Buncombe soils are loose sand or loamy sand. Natural fertility and the content of organic matter are very low. Permeability is rapid, and the available water capacity is low. Reaction is strongly acid. The effective root zone is deep. Response is fairly good if suit- able applications of lime and fertilizer are made. These soils are in good tilth, but during long dry spells, crops may be damagged from lack of moisture. Plant nutrients leach out rapidly. Most of the acreage is cultivated, and a small acreage is in forest. Even if these soils are properly managed, they are not suited or are only poorly suited to most of the crops grown locally. They are suitable for trees, for recreational areas, and as habitat for wildlife. Organic matter that helps to retard the leaching of plant nutrients can be added by returning all crop resi- due to the soils and by keeping a close -growing crop on the soils at least half the time. Suitable crops are ones that produce a large amount of durable residue. A desir- able cropping system is one in which perennial grasses or legumes are grown for 2 years and are followed by a row crop grown for 1 year. Liberal amounts of ferti- lizer, applied in slit applications, are needed to keep these soils productive. CAPABILITY UNIT VIe-1 This capability unit consists of well drained or mod- erately well drained, strongly sloping to steep soils on Piedmont uplands. These soils are in the Cecil, Creed - moor, Herndon, Louisburg, Madison, Mayodan, Wed- owee, and White Store series. They have a surface layer of loose loamy sand to friable silt loam and a subsoil of friable sandy loam or sandy clay loam to very firm clay. In some places the plow layer is a mixture of the remain- ing original surface soil and of material from the sub- soil, but in other places the subsoil is exposed. Natural fertility and the content of organic matter are low. Permeability is slow to moderately rapid, and the available water capacity ranges from low to high. Reac- tion is medium to strongly acid. The effective root zone is shallow to deep. Response is good if suitable applica- tions of fertilizer are made. The uneroded soil is in good tilth. Tilth of the eroded soil is fair to poor, and that WAKE COUNTY, NORTH CAROLINA ;oil can be worked within only a narrow range of mois- ,ure content. A crust forms on the surface of the eroded ;oil, and clods form if that soil is worked when too wet )r too dry. Stands of crops are not uniform on the eroded ioil, even though the amount of rain is normal. Most of the acreageisin forest, and small acreages are -ultivated or in pasture. The soils are suitable for trees ind for use as wildlife habitat. Because of slopes, erosion, ,unoff, lack of adequate surface soil, and low natural !ertility, these soils are not suited to cultivation. The meroded soils are fairly well suited to such legumes and )erennial grasses as sericea lespedeza, kudzu, white clo- rer, bermudagrass, and fescue. The eroded areas are ;uited to sericea lespedeza and kudzu. A fair amount of , . age can be produced for grazing if the soils are well nanaged. CAPABILITY UNIT VIe-2 This unit consists of well -drained or somewhat exces- sively drained, gently sloping to moderately steep soils )n Piedmont, uplands. These soils are in the Cecil, White ;tore, and Wilkes series. They have a surface layer of -ery friable sandy loam to firm clay loam and a subsoil. )f very friable sandy loam to very firm. clay. Where the airface layer is clay loam, it consists mainly of material rom the subsoil that has been mixed with a small amount of material from the original surface layer. Natural fertility is low to inedium, and the content of )i-ganic matter is low. Permeability is slow to moderate, ma the available -water capacity is low to high. Reaction s slightly acid to very strongly acid. The effective root :one is very shallow to deep. Response is good if suitable applications of lime and fertilizer are made. The ineroded soils are in good tilth. The eroded soils are its .air to poor tilth, and they can be worked within only a iarrow range of moisture content. A crust forms on the. +roded soils, and those soils become cloddy if worked when too -wet or too dry. Stands of crops grown on the +roded soils are not uniform, even though the amount of 11in is normal. Most of the acreage is in forest, and small acreages are ,ultivated or in pasture. These soils are suitable for rees and for use as wildlife habitat. Because of their ;lopes, shallowness, and erosion, they are not suitable 'or cultivation. They are, however, fairly well suited to nidzu, sericea lespedeza, white clover, and fescue. Kudzu un be grown on the eroded areas. A fair amount of I orage, can be produced for grazing if the soils in this mit -,ire properly managed. CAPABILITY UNIT V1re-1 This unit consists of well drained or soniewhat execs- ;ively drained, strongly sloping to steep soils of the, Pink - ton, Wake, and Wilkes series and of areas of Gullied and. These soils are on Piedmont uplands. Their surface ager is sandy loam to clay loam or clay, and their sub - oil is loose loamy sand to very firm or plastic clay. Soils 'f this unit range from slightly eroded to gullied. In the lightly eroded places, the plow layer is a, mixture of the emaining original surface soil and of material from the ubsoil. Where more erosion has occurred, the present urface layer is mainly material from the subsoil. In ,allied areas nearly all the original surface soil is gone. 33B-403-7G—G Figure 13—Gullied land that is not practical to reclaim for culti. vation or pasture and that should be used for trees or other permanent vegetation. In places part or all of the subsoil has been lost through gullying (fig. 13). The soils in this unit have low to medium natural fertility and <ire low in content of organic matter. Perine- ability is moderate to moderately rapid, and the available water capacity is low or very low. Reaction is slightly acid to strongly acid. The effective root zone is very shallow to inoili.rately deep. All of the acreage J is in forest or is idle. The soils are too steep, eroded, and droughty to be suited to cultiva- tion. They are suited to trees, to recreational uses, and to development for wildlife habitat. They are fairly well suited to kudzu and sericea lespedeza and produce a fair amount of forage for grazing if properly managed. CAPABILITY UNIT VIIw-1 Only the miscellaneous land type, Sivainp, is in this unit. It is very poorldrained and nearly level, and it occurs on stream floodplains at the upper end of man- made Likes. The soil material was washed from uplands and deposited during periods of heavy rains. It is highly variable in texture and very friable and loose. Swamp is covered by water nearly all of the, time, and it has a, very shallow effective root zone.. It is in forest-, of poor quality. Wetness and flooding make this land type unsuited to crops or pasture, and drainage is diffi- cult or impractical. The areas can be. used as woodland and as habitat for wildlife. Table 2 gives estimates of yields of the principal crops 'in Wt grown ake County. The,, yields depend upon a com- bination of soils and climate, the kind of crop, and the level of management. The, estimates in table 2 are based on high-level inanagrenient. Yields are substantially lower under less intensive management. 74 SOIL SURVEY TAM,ii: ?. —Esti. niteel averafle y ids per acre of i,rnportant crops grown un leer a, kigh: level of mr�rz.a,gr�rrt,ert,i [Dwshed lines indicate that the crop is not. commonly grown on the soil or that data. on which to base an estinttite are not. available) roils Altav t t r fine sandy loam, 0 to 4 percent tslopes - _ - -. Appltna gravelly gaudy loam, 2 to 6 percent slopes _.. Apphnur gravelly s;a,ndy loam, 2 to 6 percent slopes, €ro(kd -- Applmg gray ells wade loam, 6 to 10 percent slopes _ - Appling, gravelly sandy loan, 6 to 10 percent slopes, eroded . _ _ _-- Appling sandy loath, 2 to 6 percent slopos------------ -..__..----- Appling sandy loans, 2 to 6 percent, slopes, croded --------------- Appliii'g satindy loaatn, 6 to 10 percont lopes---- --- A pplinh sandy loam, 6 to 10 perecnt slopes, eroded -------__-__ A Dphng sandy loant, 10 to 1,5 percent "'dopes..--_- _ ----- -_---- Applin,g fine sandy loarn, 2 to 6 percont slopes __ ---- Appling fine sandy loam, 2 to 6 percent slopes, eroded ..---- _----- Appling fin( ,3ndy loam, 6 to 10 percent slopes.____ Appling fine s,)ndy loam, 6 to 10 percent slopes,... -- Augusto fine sandy loam ------------------------------------- Buncombe soils ------------------------------------------------- Cecil ---.--__. ---- Cecil sandy loam, 2 to 6 percent slopes ------------------------- Cecil -._ -- Cecil sandy loam, 2 to 6 percent slopes, eroded------------ - - _ _ _ _ Cecil candy loam, 6 to 10 petcettt edopes ------------ Cecil sandy loam, 6 to 10 percent slopes, eroded _____-_-_________ Cecil sandy loam, 10 to l.) percent slopes------------------------- Cecil ______-.____Cecil sandy loaarn, 13 to 45 percent slopes--- _ ---_- - ----- Cecil gravelly sandy loam, 2 to 6 percent slope_ _ _ Ccetl gravelly sandy loans, 2 to 6 percent slops, oroded--__ __ -.- Cecil gravelly sandy loam, 6 to 10 percent slopes Cecil gravelly sandy loam, 6 to 10 percent slopes, eroded ---------- Cecil clay loam, 2 to 6 percent slopes, severely oroded------ ------ Cecil elny loam, 6 to 10 percent slopes severely eroded___- -__ Cocil clay loam, 10 to 20 percent 9lopos, severely erodedd__- ---_-- C1xmwacla sort;' ----- -- ---------------------------- ------ C',olfaxsandyloaate-_----------_..-- ------------------ ..-__ C01i4aarec, fine handy loam -------------------------------------- Congaree _---_..-------------- __Con;'Tree, silt loaxt1--- ----------------------------------------- Creedmoor sandy loam, 2 to 6 percent slopes-_-. _ _ _ .. _ _ _ Creedmoor sandy loram, 2 to 6 percent slopes, eroded-- -------___ Creedraroor sandy loans, 6 to 10 percept slopos__._ Creedn)oor sandy loam, 6 to 10 percent slopes, eroded_________ Creedmoor sandy loam, 1.0 to 20 percent slopes---------- - --.--- Creedmoor silt loam, 2 to 6 percent, slopes - _ -._ _ Creedmoor silt loam, 6 to 10 percent slopes --_- Durham loamy sand, 2 to 6 percent slopes.--.__ - _- ----- _ _-- Durham loamy sand, 2 to 6 percent slopes, eroded---------_ Dia- tarn loamy wand 6 to 10 percent slopes ----------------------- Durham loam) wand, 6 to 10 percent slopes, eroded _ --.-_. _ _ MiOn fine sn;nd.y loam, 2 to 6 percent slopes _ -- --- }LllOn tine MtndY loam, 2 to 6 percent slopos, eroded .--__ -_..- 11 non fine ,sandy loans, 3 to 10 percent slopes �Euon fine sandy loam, 6 to 10 percent slopes, eroded___���_ 1Lrion fine sandv loam 10 to 15 1Dereent- slope eroded Corn 1 Cotton (lint) au. I 1A 70 i 45€) 73 700 68 fs25 65 600 60 525 73 700 68 625 65 606 60 52:5 55 475 73 700 68 625 65 600 60 52.1 4.) -_--- 73 700 68 6`25 615 600 60 55 475 - 73 68 1)5 60 0 45 55 e)0 90 60 50 50 40 40 60 r)0 70 65 65 6($ 54 45 45 36 .. ..--_ l� race, tllc. sandy loam, '2 to 6 percent slopes --------------- ----- ---..-'-'- h0 FaCeVille, sandy braes, 2 to 6 percent slopes, eroded ---- _ 7n Fatcmille. randy loam, 610 10 percent slopes, eroded --------- (flue (floe 65 Geor6rcville silt loam, 2 to 6 perecnt slopes_, _ _ 68 Georl,crtlle silt loam, 21-o 6 percent slopes:, eroded_ _ 65 C3eorg("elle uslt. loan), 6 to 10 pereel t slopes _. _ 60 Geos ev ille silt loam, 6 to 10 percent slopes eroded _ _ 55 E�leorgevillca silt loam, 10 to 15 percent slopes, eroded -------------- 28 50 Goldsboro sandy loam-_ -- _.--_- -_ _-- 2,400 0 �I Gran elle sandy loam, 2 to b percent lopes 73 Granville sandy loam, 2 to 6 percont slope,,, eroded - fib Grab) dle randy loam, 6 to 10 percer)t dopers _ G Granville sande loam, 6 to 10 percent elopers, eroded-- _ _ _ - -- 60 Graartrlle sandy loatn, 10 to 15 percelit slo'pc-'�----- ---- ---- 55 f Gulliedla.nd------------------------------- .------------- Ifelenn, sandy loam, 2 to 6 percent slopes ----------- -___--I Sea footnotes at end of bible. --700 625 6()() ;52 5 425 400 -- 6;)0 650 525 450 425 350 325 525 425 5,)0 525 52.) 475 Oats I To - bacco soy-- oy )lav L 2, 400 35 -- - 2, 30(6 (flue (floe boans ""Noy Aunual 50 cured) 20 lican les- 17 35 1, 400 1.5 pedeza 2, 100 28 ;i0 65 2,400 32 2. l 1 5 7:5 2, :300 30 '. 0 � 1. 5 70 2,200 2$ 28 4.5 — 65 2, 1.50 26 ' 1. 7 1, 4 60 1, 100 2:3 1. 5 1. s 75 2, :300 30 2. 0 1.:� 70 2, 300 28 1. 9 1.. 5 65 2, 150 26 1. ! 1. 4 60 2, 100 2:3 1. 5 1.:3 58 2,000 20 1- :3 1. 3 75 2, 300 I 30 2. 0 70 2, '200 2$ j 1. 9 L 5 65 2, 150 26 1. 7 1. 4 60 21 100 23 1. 5 ]. 3 55 ----- 45 _ - _.. -- 35 --- 2.4 '- -------- . 8 75 2, '200 ! - - --- 2. 0 1. 5 70 2, 100 28 1. 9 1. 5 65 2, 050, 26 1, 7 1. 4 60 2, 00(1 2:3 1. .5 1.:3 58 1, 90(1 20 1. 3 1. 3 75 2, 200 � :30 2. 0 1. 5 70 2,100 28 1.9 L5 Gia 2, 050 `26 1. 7 1. 4 60 2.000 23 1.5 1.3 i5 1, 300 1. o 42 1, 2.5(1 - ---- c6 - 3:3 55 1-- ' 75 2 2, 400 28 30 75 L 2, 400 35 60 2, 30(6 25 50 1, m)() 22 50 2,000 20 40 1, 600 17 35 1, 400 1.5 60 2, 100 28 ;i0 1,9()0 23 62 58 21300 2, 200 30 28 ;8 2, 150 26 >3 2, 100 23 54 --- 28 4.5 — - - 25 45 I 2:3 36 --- 1 2. 0 2. 4 1. 7 1. 5 I. 1 1, 0 1. 0 2. 0 1. 9 1. 7 1. 5 1. 9 1. 7 1. 5 1.4 77;5 73 2, 200 35 2.:3 750 1 70 2, 100 32 2. 2 625 60 1, `300 3O � 2. 0 600 f1R 1 I oo0 28 , 1, n i() ii25 6;) 60 1 1;D0 1, 750 25 23 1. 7 1. is 500 - 450 I 5:i 50 1, 630 1, 450 � 21 17 �� 1. 4 1..1. 675 65 2 351637 2 5 700 1 7;) 2, :300 j 30 1 2. 0 625 70 1 2, 200 28 1 1 9 600 65 2, 150 26 1. 7 2:5 473 60 5S 2, 100 1 2, 000 i 2:3 20 i 1.5 1. 3 1. 1, 6 1. 6 1. 4 1. 3 1. 1 r6 .8 1. 4 1. 1 1. 6 1. 5 1. 4 1, 3 I. 4 1. 3 I. 1 . 4$ . 6 2. 1. 2. 0 1 4 1 1 i 1 3 i 1. 2 F(,,cuuo- whito elovor pastur'o :tnfmnT,- t^, sari r..-tyu t 185 18:5 180 175 155 185 180 175 155 155 185 180 175 155 1 it 0 - - 190 IS5 1.80 160 160 140 130 1.85 18(1 166 145 1,10 120 200 180 210 210 170 1.60 155 Lois 1:3ri 1.70 155 180 175 1615 155 170 160 15s� I4.s 125 195 190 170 150 175 170 16 i) 150 1 5 1`35 1 ::i 1 ISO 1.4 17.1 1.:3 155 1.:3 60 a 525 I-- 60 2, 100 i 2,5 I. 7 1. 4 170 WAKE COUNTY, NORTH CAROLINA 7 5 T.kBrE 2—E stimated av€Tapl; YiildP pF:rt acr(� at important crops grown un.dcr ahigh, ?er(G of nwva.t7(rn, )P1—Co lit irltied llay I To- I I Fes.,euc-. Soils Coln. Cotton Oats baeco i Soy- — �— - ' - hito �ZiY1t� : �Huo heA'11p Soy Anntud clover j enred) i i hOZ111 les- pastim, : F pedcza Helen t sandy- loam, 2 to 6 pct cent slopes, eroded _ _ . ------ _, B 50 Lb. 400 t`nlal- Bu. I 50 lily. 1, 900 lli" ' 22 To n.4 1 1. 5 To114 1.:3 I 160_ Helena, sandy loam, 6 to 10 percent slopes_.___ ------- _____ .50 i 425 I 50 ': 1, fs00 j 20 ', 1. ;; � 1. 1 155 r[elen:z s:a,ndv barn, 6 to 1.0 1) oreent slot/eE, oroded.-..---_.___ 40 300: 40 ! 1, 600 17 1. 1 ! 9 145 Helena s.ni1dy loam, 10 to L,/ percent slopes------------ -- - 40 �', 325 35 1, 400 10 1. 0 S iia Ierndou silt Joa.n1 2 to 6 ixre e alt slope - - - -... _ _ _ _ _ _ _ . Cerlldou silt to, 2 to 6 nt slope eroded_-.. 6 65 600 350 68 65 ' 1, 900 1, 8:50 20 22 1. 7 1, 5 1 D 1 4 1!;0 1745 percr , ___ derndon silt loam, 6 to 10 pet e ent `elope _ _ _ _ _. _ _ _ _ _ _ _ 60 ! 525 60 1, 750 20 1. 3 1 I 170 -1erndoll silt loan), 6 to 10 pa'Iceot slopes, eroded__ _______ ___' 55 i 500 1� 55 1, 650 17 1. 1 I d 165 Jerndoii silt to 15 ereent eroded ---------- p7l'rc(11L 50 45 I (1 1, 450 1. 1CD0 s101)cS _ _ _ _ _ -IerIldon silt loaYln In t0 Zo - : 1 1 _ -,___ _ -__-__ __~__ _____-i -- ____ ________,________, - - 1,40 Floyd loam, 2 to 6 percent sloppes, oroded-___ -. _-_ _______" 70 525 70 ---- 2: 1. 9 1. ri 175 :loyd loa:rn, 6 to 10 percent slopes, eroded _ _ 65 1 475 65 ____ 23 t. 5 L 4 1 W �loyd IOa.np, 10 to :!5 percent slopes, e lode d__ ___ __ (30 425 60 ------ 15 ' 1. (} 1 d 155 louishurg loaang- sand, 2 to 6 percent, slopes --- -_,-- - -__ __ -_, 40 400 50 1, 700 1.7 1. I 9 125 1ou=sburg loamy und, 6 to 10 per slopes _-_ 30 325 40 1, 500 13 r 7 1.00 ,ouisbuYg loamy sand, 10 to l D 1�5creent slopcu __ .- _ _-,- -',-_ (--------- ___ _ _-- ------ _-..-_ - I__- - ----- 7a> �ouisburl Wedowee complex, 2 to G pcleont slopes __ Wodowee 2 to 6 50 40 450 400 5.5 50 1, 800 1, 700 IS 1.5 1, 2, 1. 0 1. 1 � 1. 140 ooisburg complex, percent slopes, eroded_- -- 0 12:, oulsbnlg-Wedowcc; complex 6 to 10 peT,cent Slopes_ __ - ,ouisbul Wedo�s 6 to 10 slopes, 1 40 35 I 375 325 45 40 1, 600 1, 500 13 10 1 S I 7 � 8 '� 100 g eye complex: percent eroded_ _ _ _ anchbulg s2ndy loam --------------------------------------- So 670 � 60 2, :300 40 2- b 1 > 0 190 111dc laird.-- .-- ---- ---- - --- -- __ _ ___�, ktadlson sandy loam, 2 to 6 percent Elopes, e.roded--------- - -- - 65 �, -- 57,D I -I 65 � -- _ I_ _ _. _ I 1 3 --- 165 > 1 slopos, d Edison sand' loam b to 10 percent slo sec eroded_ -- i-'-- 475 5 , i ___ 1. 1 140 el ldison sandy, bola, 10 to 15 percent slopes, eroded_ __ _ _ _ _ _ )0 i 400 a0 -- - - 1. 0 130 eladison sandy, losm, 1.) to 25 percent slopes eroded_ _9 7;7 ! -- 1'la Jantachlc soils-------------------------------------------- Iay-odan sandy loam, 2 to 6 percent: Elopes 73 600 700 65 752, _ 300 ' --- 30 _ _-- 2.0 _' 190 1,4a - -- dayod loam, 2 to 6 slopes, eroded__. 6 625 70 2, 200 28 1. 9 1.5 1:5() In sandy percent. -------- el lyodan sandy- loa rn, 6 to 10 percent slopes ------------- -- (p5 600 6"") ! 2, 150 : 26 1, 7 1 1.4 175 Iayodaln sandy Loam, G to tU percent ,,lopes, eroded--.-..--- ____i Jayodarl sandy loam, '10 to 15 slopes, aroded 60 1 50 1 525 1 450 60 ! 55 2, 100 1, 760 f .23 15 1.5 ', 1.0 I. 3 i 1.2 15:5 1,415 percealt --- 1 layodtn sandy loans, 15 to 25 percent slopes__ __ ------ ------ 1 _ _-____-- i -- 1. 1 145 la.yodan gravelly sandy loam, 2 to 6 percent slopes- __ 7.3 700 75 2, 300 30 2.0 1. 5 15.5 Jayodan gralvelly sandy- lonin, 2 to 6 percent slopes, eroded_. _ (Db (525 j 70 1 2, 200 28 1 1. 9 1 1. ri 180 la yodln gravelly sandy- loam, 6 to 10 percent slopes_.--- _�, 65 I 600 615) 2, 150 26 1 1.7 1 1.4 173 Ia yod l,n gravelly sandy= loans, 6 to 10 percont slopes, eroded _; 60 525 �` 60 2, 100 ! 23 1_5 I 1..3 ' 155 'Ia,yodaln silt loam, thin, 2 to 6 percent slopes. 73 700 ; 75 2, 200 i 30 2.0 f ] . 5 1 S,5 dayodaln silt loam, thin, 2 to 6 percent slopes, eroded ----------- 63 62r) 70 2 100 28 1. 9 1.5 I80 Iayodln silt loam, thin, 6 to 16 percent slopes_.._ __ __,.. 65 600: 65 2, 050: 26 - 1.7 1.4 175 liyodan silt loam, thin, 6 to 10 percent slopes, cIoded _ 60 D)p 60 1, 9110 23 1.5 1. 3 15 11 tiyodatn silt lon,in, thin, 10 to lip porcenr scopes......_ _.., _ -- .- - - _ •55 975 aDu 1, 900 20 - 1.3 ! 1.113 II. I¢)5 aorfolk loamy sand, 0 to 2 percent scopes --------- ----____-_ - -_.- 75 675 6.5 2, .500 I Sri 2.4 195 dorfollc loacmy saud, '2 to 6 percent slopes_ . 73 j 650 �' 62 2 450 32 2. 1 _ 1S0 lorfolk loamy sand, 2 to 6 percent slopes eroded _ 70 I 625 60 2,300 30 f 2. (} ... _ _ _ 168 a orfolk loamy sand, 6 to l0 pe.rcent slopes _ .. _ _ _. _ _ .. _ _ m _ _ _ _ _ _ _ .. _ - " 67 G00 57 2 200 28 Lel 1 _ _ _ ._ _ _ _ _ 160 +orfolk loamy sand, 6 to 10 pereent slopca, eroded- ------------ fit - 525 { 52 2, 000: 25 1 1. 7 l_...-_---.--� 150 )Iangeburg loamy sand, 2 to 6 percent sloperp_ -_ ___ _ 7.5 ! 675 I 65 � i 500 35 2.4 ' __-- -, 1.95 11'angeburg loamy sand, 2 to 6 percent Slopes eroded --- 73 670 € 62 ?, 450 32 2. 1 _ ISO Ir 111geburg loamy stand, 6 to 10 percent slopes, eroded _ 6250 300 2.0 l Ibw lnkstorl Banda loans, 0 to 10 percent lopes_._ --__- _-- �0 :' �' E 00 f 8 f 1-10 lnkston sandy loam, 10 to 45 percent slopes_. _ _ ------ -.-- _.30_ ...._ 'hlmnl€s P ! �,ains fine sandy loalrn_ -- _ __-. - r) '__- - D00 ' 60 2, 000 35 ___ 2. 4 -------- _ 170 mu_ i3Oa1101ie flue 3illd}'lOmu _-______.__-. _'---..__.__.._.._.-_ 4O 4O -_i-------I _. -'---_ IaS to 61'amp-_._--- --- ----- - - ---- - nnee sandy lonin, 2 to 6 percent ::lopes.__ 60 525: 60 2, 200 25 1.7 IA ; 170 ante sandy loam, 2 to 6 percent slopes, eroded_ 50 '': 450 50 2, 1.00 22 1.5 1.3 ( 160 Incesandy loarn, 6 to 10 percent slopes eroded----------------- 40 ! 350 40 1, 800 17 ' 1. 1 9 145 dagraim loamy sand, 0 to 2 percent :lopes ---- 70 625 50 2,400 25 1.7 l 1 -- �,,.Lgram loamy sand, 2 to 6 percent slopes _ _ _ - _ - - _ _ _ _ _' 65 I 590 ' 45 2,300 20 ! 1. 3 _ 1.0- v Ygranl loamy sand, 6 to 10 pelcenL wlopes___ _ 1 60 : 570 40 2 200 Is 1.2 9 r I(grain Troup sands, 0 to 4 percent slopes---------------------- 45 ' 32,55 45 1 850 18 1,2 7 Iahee, fine saLndv loam _ -_.-- _ -__ - 6i0 _ - 60 '_ __.._ - 17."7 nke soils, 2 to 10 percent: slopes------------------------------------- 30 300 40 -- - __-- 7ake soils, 1.0 to 2rp percent slopes__.. ----------------------- __ Tedow'eo sandy loam, 2 to 6 percent +lopes- -- - ---__-------- - -- 63 -- 600 ------ - 68 ------ 2, 000 -_- 2155 1. 7 1 u 180 See footnotes at end of table. a oOM SURVEY TABLE 2.—Estimated cixerage yields por acre of °irnportaat crops grou,,n, wr,der a high. lexel of aian,agemeid--- Contillued Hay roW----e.Scue- oils 1 Corn Cotton Oats bacc.o Soy � -�� — � whine �liYat "floe be ens Soy A.nnaa.�tl. clover P carred) bean les- p tsvire L)edeza j Wedowee sandy Loan, 2 to 6 percent siope�, eroded ------ Wedowee sandy loam, 6 to 10 pcsrcent slope s.. ----- --- - .- - - - - We,dov,ee. sandy loam, 6 to 10 percent elopes, eroded --------- Wedowee, -- -Wedowee sandy loam, 10 to X15 pereent. slopes, eroded_ �kedowee. Sandy loam, 15 to 25 percent slopes------------- ---- , W haadkee Silt loam ------------------------------ Wehadkee and Bibb soils: wehadkee soil_ -- -- ---------- Bibb - Bibb soli _ White Store Sandy loan, 2 to 5 percent Aopc,4---------------- White __ --- White Store sandy loam, 2 to 6 percent slopes, eroded_ -......__- White Store sandy loam, 6 to 10 peacesnt slopes__._ While Store sandy loam, 6 to 10 percent slopes, eroded_ -.. _ _ _ _ _ _I White, Store, sandy loam, 10 to 20 percent slopes_ - - wbite Store silt 101Mn, 2 to 6 percent Slopes-------- ------------- White --_ ----_-Whites Store flay loam, 2 to 15 percent slopes, severely e=rod d__---� Wilkes Foils, 2 to 10 1)ercent slopes _ - Wilkes soils, 10 to 20 percent ��iopes - Wilkes :coils, 7.0 to 45 percent Slopes - - ----- - -- ---- i Wilkes stony soils, 15 to 25 percent slopes- WorshaaanSandy loam ------------------- -_-_._------------- x Animal -unit -days is to terns used to express the carrying capacity ovpaistnre. It is the nnrnber of animal u.nets etixried per acre rntalti- plied by the number of days the pasture is grazed dearing a si-ngle gazing season without iniary to the god. An acre of pasture that provides 30 days of grazing for two cows has ca carrying" capacity Following are practices gernerally- considered necessary to obtain the Yields given in liable :2e 1. Fertilizer and lune are applied according to the needs indicated by the re itlts of soil tests. l?. 1-figla-yielding varieties of crops acre grower. 3. Legumes are inoculated.I. The soils are properly tilled, and the crops art properly c ultiv n,ted. 5. Weeds, insects, aand diseases are cora rolled. 6. liotat;iona tilat csotarer° e Illoisture. and protect $lee soils from erosion are used. 7. Runoff is adequately controlled. 3. Overgrazing is avoided, as -cad the paaskires are; well managed. The estimates g'iverl ul the table are based. arra experi- ence with the crops a.ndsoils of the county. They are also biased ora assumptions thatt, the average a,inount of ram - fall Avill. be received over a long period of time, than no Supplemental irr°igaation will be used, that adequaate. clrain- a,ge will be provided and that Iso flooding or ponding will take, place. Use of the Soils as Woodland' All of the land area tlrazt is now Alrake County wns originally covered by forests. For the most part, these `By Jori R. Wn',G'zNs, Jn., forester, Soil. Conservation Service, Raleigh, N,C. Bu. ? 58 ( Lir. 575 i3u.6'3 1 L6. , 1300 53 ,550 i4 1, 500 48 500 53s 1, 700 38 425: 43 1, 500 ri 1. 1 1. 3 ! 16O 415) (__ t. 2 1.14:0 70 . i 130 50 500 SCJ 1, 700 40 400 50 1, 400 45 425)50 1, 500 I----- -- ---- ---- - -- ------ 5F1 500 55 45 I 370 55 1, 600 --- - --- -- ---- 1.55 I of 60 animal -unit -day;. An animal unit i,s one cow, one steer, or one horse; five, hogs; or seven sheep or ")oars, s robtwco is grown only in areras that are not subject: to Overflow during the growing jeason. forests were, free of the dense, brushy undergrowth. Hint t, is common in inany we,oded areas today, but some had an understory of shade -tolerant trees and shrtabs, aiid of urtaascadirae grapevines and other woody vines.. Slror°tleaf, loblolly, longleaaf' pond,, nd Iri_r,garna. pines, e��stern redeedar, baldeypress, A-thintic white -cedar, and a reli€at stated of eastern hemlock (IX) were part of the or•iginaal. for°gists. ielrory, ash, inaFale, yellow -poplar. sweetgunl, eine, black cherry, ;l s a:rrlor°e, black. walnut, Nvlrito baa.ss wood, lsiaackgaiin, i°a e`er i)irch, and Nnaeric.atn beech. grew on. tlae sleep, Moist soils of the flood plains, ora, the. lower slope , <.and in ravirles. (4rowing; ill the ander-,tory of there hardwoods were flowering dogwood, . li-leriean holly, redbtad, sourwood, hophornbeaam, b.ltte lfbeocll, ra.11d rrnounttun.-laurel. On the uplands aand high stre,at.rn ter:, races were the ha),r€lwood forests csonsistiirg of laielcory. oaik, red niaaple, yellow -poplar, sweet.gaarrn, knack walnut, Persimmon, black cher°ry7 and winged elan. Groveing its the und.erst:ory of these upland forests were dog, -N ood, holly-, sotirwood, service berry, reel- inulberlT, and redbud. Large numbers of loblolly and shoitleaaf pines were mixed in the, overstozy of these upland forests. Longleaf pine grew on the well -drained to excessively drained soils in the soarthern part of the county. Tre0s iia the untderstory of these forests included blackjack, past, and other scrub oaks. Baa,ld.c;y'press and swamp tupelo gr•ev� in swampy areas and along streams of the Coastal Plain. Associated with the cypress--tupeto forest type were Carolina ash, green 2i -sir, red. naa.ple; pond pine, occaa- rnnal� Ru. I Tons Towan r�.ztltdays i 22( 1.5j 1.4 170 20 i 1.3 1.4 j 170 17 ? 1. 1 1. 3 ! 16O 13 .9 t. 2 1.14:0 130 160) - -- 160 180 17--- 1 1 '- 1.0 150 15 ' A. 0 A 140 13 .8 140 .8 ! 130 -1. 8 � 130 15 ' 0 ! 1.0 150 16 1.0 1 ,5 140 { 115 --- - --- -- ---- 1.55 I of 60 animal -unit -day;. An animal unit i,s one cow, one steer, or one horse; five, hogs; or seven sheep or ")oars, s robtwco is grown only in areras that are not subject: to Overflow during the growing jeason. forests were, free of the dense, brushy undergrowth. Hint t, is common in inany we,oded areas today, but some had an understory of shade -tolerant trees and shrtabs, aiid of urtaascadirae grapevines and other woody vines.. Slror°tleaf, loblolly, longleaaf' pond,, nd Iri_r,garna. pines, e��stern redeedar, baldeypress, A-thintic white -cedar, and a reli€at stated of eastern hemlock (IX) were part of the or•iginaal. for°gists. ielrory, ash, inaFale, yellow -poplar. sweetgunl, eine, black cherry, ;l s a:rrlor°e, black. walnut, Nvlrito baa.ss wood, lsiaackgaiin, i°a e`er i)irch, and Nnaeric.atn beech. grew on. tlae sleep, Moist soils of the flood plains, ora, the. lower slope , <.and in ravirles. (4rowing; ill the ander-,tory of there hardwoods were flowering dogwood, . li-leriean holly, redbtad, sourwood, hophornbeaam, b.ltte lfbeocll, ra.11d rrnounttun.-laurel. On the uplands aand high stre,at.rn ter:, races were the ha),r€lwood forests csonsistiirg of laielcory. oaik, red niaaple, yellow -poplar, sweet.gaarrn, knack walnut, Persimmon, black cher°ry7 and winged elan. Groveing its the und.erst:ory of these upland forests were dog, -N ood, holly-, sotirwood, service berry, reel- inulberlT, and redbud. Large numbers of loblolly and shoitleaaf pines were mixed in the, overstozy of these upland forests. Longleaf pine grew on the well -drained to excessively drained soils in the soarthern part of the county. Tre0s iia the untderstory of these forests included blackjack, past, and other scrub oaks. Baa,ld.c;y'press and swamp tupelo gr•ev� in swampy areas and along streams of the Coastal Plain. Associated with the cypress--tupeto forest type were Carolina ash, green 2i -sir, red. naa.ple; pond pine, occaa- WAKE COUNTY, NORTH CAROLINA sioilailtlantic zvlute. ca dors, and other water -tolerant. trees. The original forests have been disturbed repeatedly since abort 1745, when English a,nd Scotch colonists began settling the territory. Nearly all of the till able partof the county has been cleared at some time or other, and some aareas have bean cleared more than once. Many clearings originally made for wood products and for farming were later abandoned. and then were restocked naturally with loblolly and shortleaf pines. Many of these second-gro-wth stands have also been cleared to meet the demands for w(wil products or for farming..Af, the present time, slightly more than a51 percent, of the land area in the county, or about. 317,700 acres, is wooded. This includes the lVilliam B. Umstead State Park, which contains 15,100 acres of woodland. All non - park woodland is classed as commercial forest and is essentially all privately owned, lilost of the privately owned forests are, in tracts of less than 5,000 acres. rl'he original diverse kinds of forests duel those 'found today in the county are the result, in paart, of the many d.itfe.rent hinds of soils and relief. These factors are interpreted in the following discussion to help the owner use and mitnage. his soils properly. Woodland suitability groups Tlie soils of NVake County have been placed in .14 woodland suitability groups to assist landowners in plan- ning for the productive use of their soils and the maii- agenient of their woodland. Each group is made up of soils that are about the saline in mater -supplying capacity and other major characteristics that affect the growth of trees. The soils svithiii each group are, also subject to similar hazards and have similar limitations that affect the planting, tending, and harvesting of trees. All soils in each group, therefore, have, about the same potential productivity for trees and need about- the saanie manage- inent and conservation practices. The names of soil series represented are mentioned ill the description of each woodland suitability group, but this does not mean that all the. soils of a gid~en series ,ire included in the group. find nd the names of all the soils in ally given woodland suitaabi.lity- group, refer to the, `Gkii-de to Mapping 1 nits" in the, back of this soil survev. For each woodland groiifl, the soils are briefly described and the preferred kinds of trees for producing sawt.iniber, pulpwood, voneer, other wood products, t liristilaas treesg 'and food forwildlife are nai.ned. Theis, the site index raaige for each of several commercially important forest trees is given, and pl.:ant competition, seedling mortality, equipment limitations, and the haz- ards of erosion and windthrow are discussed. Site index is the average total height,, in feet, of the dominant and codominant trees in a well -stocked, even - aged ..stand at li0 years of age. It. is a means of expressingg the potential productivity of a, soil for a given bind of tree. The ratings are based on many field measurements of the total average height and. age of treesin existing forest stands on identified soils and on the results of forest research (7, .;., 5, O3 'T, 1J, "The rating"; for yellow -poplar are based w -1957 clata assem- bled by w. T. DooLirriE, Forest Service, 77 Ratings of the soils with respect to plant couapetitioli, seedling mortality, equipment limitations, and the haz- ards of erosion and windtbrow are discussed in the fol- lowing paragraphs. PUNT ('011PETI IO -N. ---This term refers to the d,egrec to which undesirable plants are expected to invade a soil after the tree canopy is rernared. The rating for plant competition reflects the degree to which these undesirablo plants impede or prevent regeneration and growth of desirable species of trees oil as given soil, either in a naturally occurring or in a planted stand. IN"here, plant, Competition is unimportant, a rating of slig/v is given, "3. rating of motkimte indicates that expected conipetitioa from widesirahle plants will delay the establishinent, of an adequate stand of desired species of trees. A rating of sevcrc3 indicates that, competition from undesirable plants can prevent adequate restocking of the desirable species of trees, either nI a naturally occurring or in a. planted stand, without intensive preparation of the site and without weeding and other special inaintenance practices. SEEDLING idloi€TALITY. -This term refers to the expected degree of mortality of naturally occurring or planted tree seedlings, as influenced by the kinds of soils, when competition from other plaints is not a factor. The ralt.in is slr.qhf if ordinarily no more thaal 25 percent of the seedlings required to provide ail initial full stoeking may die. Natural regeneration is suitable, or an original -plant- ing can be expected to produce a satisfactory stand. A rating of )rr.oderyatc; indicates tl-iat losses of seedlings will be between 25 and 50 percent. Natural regeneration van - not always be relied upon for adequate and iminediate restocking°, and planting may be a desirable alternative. A ra,tiiig of seve,sre means that more tun 50 percent of the seedlings are likely to die and that adequate, natural restocking is not, expected, unless additional management is given. For example, use of superior planting tech- niques and of € uperior planting stock maty be reiluiIWI, and replanting may be necessary, for assurance that the stand will be adequate° EQ121PAIENT LiMITATIoNs.-----I+actors that limit the use of mechanical equipinent normally used for woodland operations are referred to as equipment 111-0itaHoils. The, doininant factors that limit the. use of egeaipillent, are steepness of slope, woniess of the soils, rough terrain, and rocks or other obstacles. A. soil rating of slight indi- cates that no particular factors Iiinit the use of equip- ment, A rating of vwdcrrafc; indicates that not all. types of equipment can lie used and that there are periods of no more than 3 nionths when equipment cannot; be used, because the soils are wet, have slopes that, are greater than 15 to 25 percent, or are unstable. A. rating of ., ever ; indicates that use of some kinds of equipinent, islimited; that special equipment; may be needed; or thaat the soils are wet,more than 3 months of the year, have slopes greater than 25 percent, or have unfavorable texture that limits the use of equipment, EROSION K.AZARD.--P0tentiaal erosion is rated to indi.-- cate the, hazard of erosion as the result of woodland. management. Steepness of slope is the major factor con- sidereds but the characteristics of the soils also affect, the rating. Generally, the rating is slight where the slopes are between 0 and 6 percent; moderate where the slopes 78 soar S7RVEY are between 0 and 10 percent; a,nd 86Vv re; where the slopes are steeper than 10 percent. These, general, rides regarding slope are modified where erodibility as a result of soil characteristics emphasizes or ininimizes the factor of slope. WI _.DTInFow D .ez ern.—Ratings given for this lna.za.rd. indicate the danger of trees being blotiwn over by-%vinds of high velocity. The ability of a tree to withstand wind is reflected by the, soil claa-racteristics that influence, the development of the root syst.ein of the tree. A rating of slight indicates that no special hazard is recognized. A rating of rnodevate indicates that, the root, development of the designated. tree species is adequate for stability, except during periods of excessive soil wetness and great; eat wind velocity. A rating of se=,vere indicates that the soils have prohibited development of a root system ade- quate for stability. For,rsm DisE.Asn:s AND IN—SECTS.—Hazards from forest diseases and insects are not discussed for all tha wood- land groups. They are discussed only, where there is a relationship between the kind of soil and possible losses from forest diseases and insects. WOODLAND SUITABILrrl GROUP 1 ,chis group consists of well -drained or somewhat poor- ly drained Cheivacla and Congaree soils on first bottoms. These soils have a surfacelayer of kine sandy loam or silt loam and a subsoil of friable fine sandy loam to clay loam. Their permeability ranges from moderate to mod- erately rapid. The available water capacity is medium, and natural fertility and the, content of organic matter are low. Water and'tree roots easily penetrate to a great depth. Frequent flooding is the chief limitation to gro-,s-- ing trees on these soils. It can cause loss of seedlings, and it impedes logging and other forest managennent. Loblolly and shortleaf pines ire, the preferred species for pulpwood and saw logs, but yellow -poplar, black walnut, white ash, green ash, red oak, white, oak, sweet - num, sycamore, and other desirable hardwoods also grow exceptionally well. Veneer logs and long --length poles and piling can be produced, aind Eastern redee.dar and Arizona cypress are suitable for prodniction of Christmas trees. In addition to tile, species 21R111ed as suitable for pulpwood, saw logs, -incl other purposes, oaks, hickories, black cherry, dogwood, and persimmon grow well on these soils. They produce food and cover for wildlife. The site index is 95 to 105 for loblolly pine, and 85 to 95 for shortleaf pine.. It is 100 to 115 for yellow -poplar, and 95 to 110 for s-",eetgum. Plant competition is generally severe for pines and for yellow -poplar and other desirable hardivodds. Inten- sive treatment of the, site, including disking, blading, or applying herbicides, is necessary in many daces to elim- inate or control nndesira.ble vegetation prior to the time pines or desirable hardwoods are planted or seeded. Seedling mortality is generally slight on these soils, more than 75 percent of planted seedlings generally sur- vive. Yellow -poplar should not be planted where the soils are flooded for 3 days or longer in sumaner (S). Seedlings of this species are killed if they are submerged for periods longer than 3 days. Surface drainage is re- quired in places to eliminate or reduce ponding. Ponding is a greater hazard on the Chmvacla soils than ou the Congaree. Satisfactory stocking generally can be obtained through natural reseeding if there is an ade-- (Itaate number of seed trees, and if competing plants are controlled. Restrictions, on the, use of equipment Commonly em- ployed in managing the forests are considered moderate, and most areas of these soils are not. readily accessible during Nvet periods. Logging equipment cannot be used in winter, especially on the Chewacla soils. T - Tse, of e mp- auent during winter can cause serious damage to the roots of trees and to soil st.rtacture. Erosion is only a slight hazard. Windthrow is not a ha,za.rd, except when winds axe. abnormally }ugh. WOODLAND SIMABILITY GROUP 2 This group consists of poorly drained soils of the Poarnoke, Wehadkee, Bibb, and Worsham series. These soils are on first: bottoms, on low terraces, and in dra:�vs or at the. bases of slopes in the uplands. They have a sur- face layer of silt loam to sandy loam and a subsoil that ranges frown very friable sand r loam to very firs clay. Peranea.bility raalge.s from moderately rapid to slow, and the available water capacity, content, of organic matter. and natural fertility ire_ medium to loan. Because of the high water table and1 ian some places, a, very, firm or plas- tic subsoil, roots of trees cannot penetrate these soils to a great depth. Where these soils are on first, bottoms or low terraces, they are subject to frequent, flooding and `eater remains on or near the surface for as long time. Floodwaters pre- vent, seeds from germinating or lnay drown seedlings, and they severely limit, the use of equipment. Where these soils are in draws or on foot slopes, they are not subject to flooding from streams, but they receive surface runoff and seepage from soils it, a higher elevation. For the soils of this group, loblolly pine, green ash, Shumard and chelreybark oaks, yellow ­poplar, syrcanaore., and s`vamp tupelo (swainp blackgum) are the preferred species. All the soils in this group are Nvell suit -ed to the groWing of trees that can be harvested for pulpwood, saw logs, veneer bolts, or long -length poles and piling. All trees named are important som-ces of food for wild- life. The site index is 85 to 95 for loblolly pine, stiveetgum, and water oak. It is 85 to 100 for yellow -poplar. Plant competition for pines and desirable hardwoods is generally severe. Unless they are eradicated or con- trolled, low-grade hardwoo(ts, shruN�, and honeysuckle and other vines prevent the successful natural seeding or planting of desired species of trees. Intensive treatment of the site, including clearing, blading, disking, pre- scribed burning, and applying herbicides, is necessary to control the competing vegetation and to prepare .x- seed- bed before, desirable kinds of trees are planted. Seedling mortality is moderate for most species grown on these soils, though prolonged flooding and silting during the growing season can result in severe mortality. Yellow -poplar and pines are especially vulnera_l-)le to excessive moisture. Controlled drainage and disposal of the excess water reduce mortality and improve the qual- ity of the site. WAKE COUNTY, NORTH CAROLINA Restrictions on the ase of equipment are moderate to severe. Poor drainage a-nd flooding limit the time that equipment can be used. Ditching and construction of roads are necessary on first bottotus and lots- terraces if those areas are to be Tilade accessible for inanageznent and harvesting of the trees. TTse of equipment, should be avoided during wet, periods to prevent compacting the soil and dama.guig the riots of trees. Erosion and wiudthrow are not significant hazards on these soils. WOODLAND SUITABILITY GROUP 3 ®rily one (napping unit, Buncombe soils, is in this woodland group. These soils are somewhat excessively drained loamy sands or sands on first bottoms that are subject to flooding, Peratleability is rapid, and the avail- able Nva.ter capacity is low. Natural fertility and the con- tent. of organic matter are, very low. Loblolly pine is the. preferred species for pulpwood or saw logs, but shortleaf pine. is also suited. Yellow -poplar, sycamore, and other desirable hardwoods, once estab- lished, grow well on these soils. The site index is 75 to Stn for loblolly pine and 5�') to 65 for shortleaf pine. ]Plant competition for pines and desirable hardwoods Is generally moderate. Elimination or control of unde- 1'ablee vegetation is necessary in places. Seedlilig moI•tality causedby droughtiness is moder- ke, to severe. alld losses of seedlings are also caused by Hooding and siltation. Extensive replanting is required in places. Natural reseeding cannot, be relied upon to estab- lish a fully stocked stand. of desirable trees. -Equipment, limitations are moderate. They result from the, coarse, texture and depth of these. soils. Erosion and windthrotiv are not significant hazards. WOODLAND Si;ITABILITY GROUP 4 This group consists of moderately well drained or omewhat poorly drained soils of the Altavista, Augusta., -olfa._x-, ("foldsboro, Lynel)burg, Afantachie, and Wahee series. These soils are nearly level or gently sloping and ire on low stream terraces, in draws, or at the bases of elopes in the uplands. They have a, surface layer of Sandy loam to silt loam and a, subsoil of sandy loam to -.lad ghat is friable to very firm. Permeability ranges From moderate to slow, and the available water capacity s medium. -Natural fertility and the content of organ.it; natter are low. Loblolly, shortleaf, and longleaf pines, yellow -poplar, slack walnut, white and green ash, red and white oaks, ,weetgurn, and svcamore, are the preferred species nu hese soils. River birch and blackgum are considered less lesirable. Eastern re.deedar and 4rizorm cypress are suit- able, for Christmas trees. Blue beech, hophorttbeant, and )oxelder are weed trees. Nearly all of the species of ,r•ees named are important as a souree, of food and cot-er `or wildlife. The soils in this group are soita.ble for groaning trees hat can be, harvested for pulpwood, saw logs, veneer ogs, or Boles and piling. The site index is 85 to 95 for loblolly Mine, slash pine, yellow -poplar, and sweetgum. It. is 65 to 75 for shortleaf cine and longleaf pine and 75 to 85 for southern red Calc. 3:35-403-6.9-6 im Plant. competition is severe. for pines and desirable hardwoods. Intensive treatment of the site, including land clearing, dishing, and applying herbicides, is needed in many places to eliminate or control competing vege- tation and to prepare the site before desired species are seeded. Seedling mortality as a result of soil influences is generally slight; at, least, 75 percentof the planted seed- lings may be expected to survive. Where the nxunber of seed trees is adequate, and where competing vegetation is controlled, a well -stocked stand can be obtained through natural regeneration. R,estrictions on the use of equipment are slight- to moderate. Logging is usually restricted during wet.- peri- ods. Tho Altavista, Augusta, and Wahee soils are sub- ject to occasional overflow that interferes with Inanage- ment of the forests. The. haza,rd of erosion is slight. The hazard of wind - throw is also slight., except when the velocit..' of the wind is exceptionally high. Sweetguln is affected by tieback in long drotaghty periods. WOODLAND SLITABILITY GROUP 5 This group consists of well -drained soils of the Appl.- ing, Cecil, Durham, Georgeville, Granville, Herndon, Lloyd, Madisorn, Mayodan, and Wedowee series. The tex- ture of their surface 'layer ranges from loamy sand to clay loch, and the texture of their subsoil ranges from sanely clay loam to clay. In some places the surface layer is gravelly. Permeability is moderate, and the ai ailable water capacity is medium. Natural fertility and the con- tent of organic matter are low. Most, of these coils have slopes between 2 and tis percent, but some have, slopes is steep as 45 percent in places. The soils are mainly une- roded to Inode.rately eroded, but some areas mre severely eroded. Loblolly pine is the preferred species for pulpwood, savr logs, or poles and piling. sllortleaf pine is also shite(l, but it grows niore sdm%-I • than loblolly pine. 'el low -poplar, black walnut., sweetgurn, and red and white oafs are the. preferred species of hardwoods. Eastern rede,edar and lrizor)a cypress are suitable for Christ- ina's trees. Pines, Arizona cypress, redeedar, and privet are, suitable for field windbreaks, -where needed. maks, hickories, black cherry, persimmoii, black walnut, beech, and American holly grow on these, soils and provide food and cover for wildlife. Virginia. kine is well suited to the dry, shallow soils. Cin the. uneroded to moderately eroded soils, the site index is 75 to 85 for loblolly pine, yellow -poplar, and sweetgunt a,nd 65 to 75 for shortleaf pine and southern red oak. In the severely eroded areas, the site index is 65 to 75 for loblolly pine and 55 to 65 for Virginia. pine. As a rule, plant competition for pines and desirable hardwoods is severe on the, better soils and is slight to severe on the, severely eroded soils. there coanpefitioll is severe, intensive preparation of the site is necessary before desire([ species are planted or seeded. Seedling mortality is generally slight to moderate, but it can be, severe in shallow, dry areas. where adequate seed trees of desired species are present, and where com- peting vegetation is controlled, well -stocked stands can be obtained through natural regeneration. Some shallow a 8011, SURVEY areas will require intensive treatment if an adequately stocked stand is to be obtained. Applying a mulch and fertilizer and establishing a protective cover of grasses Or of grasses amrel legasmes are beneficial. Natural reseed- ing eseeding cannot be depended on to provide an adequately stocked stand of pine. Equipment limitations are slight -where the slopes are less than 15 percent, moderate where the slope's are between 15 and 35 percent, and severe where the, slopes are steeper. The hazard of erosion is sli0it on slopes of Less than 6 percent, rnoderarte on slopes between 6 and 10 percent, and severe oil slopes of more them 10 percent-. Unpro- tected steep slopos and roads built on a steep gradient are likely to be severely eroded unless special conserv�a,- lion measures, :ire ar need. Where feasible, firebreaks and roads should be built, along the contour. Windthr°ow is a slight hazard oil these soils. WOODLAND SUrrABILId'1 GROUP 6 This group consists of well -drained, dined, taeax°ly lev7 l or gently doping coils of the Facevil,le, Norfolk, incl. Orangeburg series. These soils have a sandy loaan or loamy sand snr°f,ace- layer and a friable to fi.rrn snbsoil. Perniesahility of the, subsoil is moderate, ;111(1 the a.vail- able water capacity is medium. Organic. ,titter content and na.tanr al fertility are low, Water and tree roots easily penetrate, these soils. LoblolIA, and slash panes ire the preferred species for pazlpwood and saw logs, but longleaf bine is oho suited. Yellow -poplar, black walnut, oil., sweet,gaamrr, and other hardvv-oo& grow well oda these soils. Eastern redcedar arnd lkrizona cypress are suitable for Christmas trees. Redeedar, Arizona cypress, cherry laurel, privet, and phofiania are suittible nnderstory slaecies for field wind- breaks. 1F1acica uan, red mulberry, persimmon, Annerica�an holly, and other tree species grog well Oil these soils and produce food and cover .for wildlife. 'pile site index is its to 95 for loblolly pine and slash lain., and "stn to 8o for Iongleaf pine acid slnortleaf pine. It is 8e> to 100 for yellow-poplaar°, 83p to 95 for sweetgunr, and 75 to 85 for souther a. red oak. Plaarat competition for pines tared desirable hardwoods from low -value hardwoods and other vegetation is gen- e:r•at,lly moderate, but it is severe in places. Serrab oak, hickory trees, dogwood, saassaafras, persimmon, red maple, sonrswood, and bla3ckgum retard the growth and develop- ment cif pines and of yellow epoplar and other preferred broad-leaved species. Intenivo treatment of the site, including disking, blading, or applying herbicides, is n.ecessar'V ill nimly places to eliminate, or control'v ege- ttation prior to the time pines or desirable haardm-oL-- are seeded or pltrntcsd. Seedling mortality resulting from the characteristics, of of the soils is generally slight.atisfaetory stocking from natural reseeding is usually obtained where an adequate number of pine seed trees is present, aanci where com- peting vegetationn is controlled. Equipment limitations are slight in areas where the slopes acre no greater than 10 percent. In those areas the hazard of water erosion is slight, but the protective ground cover should be disturbed as little as possible by logging and other operations. Where feasible, locating firebreaks and access roads on the contour is desirable. Wind erosion is a hazard in large open areas. In. those places ryegrass or a similar cover crop can be used to protect seedlings planted for windbreaks. Windthrow is not a hazard, except when winds are unusually strong. Damage to loblolly pine from infestations of the Nan- tucket pine tipinoth (Rhyacion a frustravia,, (Cmnst.) ) craw be severe on these soils. WOODLAND SUITABILITY GROUP 7 The only soil in this group is Pairrs fine sindy lown. It. is nearly level, is poorly drained, and is in depres- sions or at the bases of alcrlaes ill Coastal Plain uphlnds. Ill wet seasons this soil re.cc=ivec runoff and seepage froln higher surrounding areas. The subsoil is friable and has a texture, of sandy loaan to clay loa:na. The organic, ni at - ter content and available water capacity are median. Natural fertilit,v, is 'low. Loblolly pine"and slash kine are the preferred. species in areas that have been drained, but longleaif pine is also suitable. Paldeypress, Swamp tupelo, green ash, and water and willow oaks are adapted species in undrained areas. �11[ost trees that are suitable for this soil also provide food and cover for vv°ildlife. This, soil is suit- able for gz ovv inag trees th<a.t can be has rvested for pulp- vyood, Gavv- logs, or long length poles nand piling. The site index is R5 to ori for loblolly pine, slash pine, and s%A eetgatln.. It is 70 to SO for long;lea F pine. Plant competition is severe for pines and desirable; har(N-oods. Ciallberry, vines, reeds (savitclacan(-), mide- sira,ble hardwoods, and other plants interfere with the esttalrlishrnent and Growth of pines and desirable broad. - leaved species. hitiking, clearing, proscribed ba-trning, coating of brush, or the application of herbicides is necessary in many plates to eradicate anwanted v°, - t-ation before desirable species are plamrted. or seedod. seedling J.norta.lity of Pines is generally slight ill areas that have been drained, but. it is severe irn depression or ponded areas because of the excess waiter. Mosses caused by excess water can exceed 50 percent, and natural re -gen- eration cta.nraot, be depended on to estaa,blish aa.. well - stocked stand. C`antz°.ileal drainage, intensive preparation of the site, and superior planting techniques are seeded if a well -stocked a tmid is to he obt.tined. Ponding and a. high water table severely limit the ase of equipmenf;. Water is on or ne%r the surface most of the t.inae. Controlled drain'a'ge is necessa.ry In many areas to provide and maintain access roads. Drnaina.ge can be costly, however, because suitable outlets are. not ahvrays ar.v-anilible. Erosion and windthrow, are, not: hazards an this, ;soil. WOODLAND SITITAr3II,ITY GROU'.L' 6 The only sail in this group, Phimmer sand, :is 1toorly drained and occurs mainly in draws and depressions on Coastal Plain uplands. Water stands on the surface of this soil for long period, each year. The surface layer is sand that is 10 to 60 inches, thick. The subsoil is steady loam to sandy clay lotim. Permeability is rapid, and the available water capacity is low. Natural fertility and the content of organic matter are low. wAX-E COUNTY, NORTH CAROLINA Where drainage is aa,dequate, loblolly and slash Dines are the preferred species for this soil, but longleaf pine i, also suitable. Pond trine, 1tlantio white -cedar, bald - cypress, sweetguni, ,,As tupelo, green aslr, and. red .maple can be grown.:itt, areas where water stands on the surface fort long tine. This soil is, suitable for growing trees that; can be. lia:rvost.od for put�woad and saw logs. 'Drees can also be grown for medium- to long -length. poles and piling; where drainage is adequate. Aiost trees that, grow on this soil provide food and cover for wild- life. 'rhe site index is t35 to w for loblolly Laine, shish pine. and sweetguiil. It is 75 to 85 for longleaf pine. Desirable species (if frees are subject. to competition from tuadesirablo hardwoods, vines, briers, s`+•itcheane, and other plants. Clearing, disking, cutting of brash, applying herbicides, and draining excess waiter =Ire needed, to control coanpetittg° vegetation and to prepare a site, for a new stmid. Seedling .mortality is genent�lly slight in areas that have been drained, bat, it is severe in ponied areas, N -,-hem losses can eacewd 50 percent. Nattind reseeding cannot; be depended upon to e4tablish an adequately stocked stand of the, preferred species of trees. Tnten- sive. preparation of the site, superior planting techniques, and management of ivate.r are, necessary if a, well -stocked stand. is to be obtlitned. .Restrictions on the n e: of equipment are moderate in the areas that have been drained and Severe in undrained stress. 7•anmy ment of water is necessary if access to the areas is fo be, obtained, and if roads are, t:o be maintained. Because of the lack of suitable outlets, some areas are di#1'icult, to drain..11so, some roads may be hard to mam- taitm becauso the coarse texhwe of the soil causes under.- catting and caving of ditches. Erosion is nota hazard, tt,nd Nvindthrow is generally .not a: hazard. `'VOODLAND SUITABILITY GROUP 9 The soils in this group are in the. Wagram series rlae,y are nearly level to sloping and occur on Coastal Plain uplands. Their surface haver is `?0 to 30 inches thick amid consists of loamy sand, ''heir subsoil is friable. or very friable s candy loattn to sandy (•lay loam. Permeability is moderate. '_!aIturat fer4dity, the content of organic naa•tter, and the available water capta.city are low. Water and the roots of trees e"Isily pe.retrate these ;soil Loblolly and slash pines are the preferred, species ort. these soils, but longleaf pines aro also suitable. The soils ai'e suittible for growing trees that ca:tt be haarvested for pulpwood, sax,, logs, or za:a.edium-length poles and piling'. Eastern tern redredam° and Arizona, cypress are satitat:ble for the production of. Christmas trees. Cherry laurel, recl- cedaaz°, ; xizona cypress, and )rivet are Suitable as under - story species where field windbreaks are .needed. Oak, hickory, dogwood, red natrlberry, black cherry, blackgu.na, turd persimmon growing on these, soils provide, food and cover fon~ wildlife. The site index .s 75 to 8�,-) for loblolly and slash panes. It i4 (;o> to 7�i for longleaf parte. Afoderate competition from oaks, hickories, blackgums, ,Sassafras, and other b a,rdta-oods interferes with the growth of pines on these soils. Clearing, disking, rutting; of brush; S1 or applying herbicides nifty be necessary to control unde sirable vegetation and to prepare the site. where bines are to be planted or seeded. Seedling.mortality is generally slight, but it is moderate in sonta years. Large areas it, which seedlings have, not survived should be replanted. Na.tt:tral reseeding is ade- quate, as a rule, if enoualt seed trees are present, if the site is properly prepared, and if competing vegetation is controlled. Restrictions to the use of equipment; are slight on. ,Slopes of up to 10 percent:. Machinery call be ttsed sat stay tarns# without causing mist, da,mage to the toots of trees or to the structure of the soils. Equipment is sub- tect to excessive wear oil these soils, hoA�'ever, because of the, abrasiveness of the stand. The hazard of water erosion is slight on slopes of tap to 10 percent. Some wind erosion occurs in large open arenas. Young seedlings plazated in field -svindbrea.lcs should be protected from soil blowing by use of a cover crop. Tile, hazaa°d of win (It.hro`v is generally slight, except, in ab- uor.na.Ily ltigb. winds. On these droughty soils, loblolly Pine is sometimes de- formed and retarded in growth lay attacks from the Nantucket pine tipmoth. This damage, occurs when the pine isa, seedling or a° sapling. WOODLAND SUITABILITY GROUP 10 The only mapping unit in this group is Wagrarn- Troup sands, 0 to 4 percent slopes. These are somewhat excessively drained, nearly level to steep soils on Coastal Platin uplands. Their surface layer is sand that: is 30 to 60 inches thick, and their subsoil is sandy lomit to sandy clay loans. Pernneaa,bil:ity is moderate to rapid, and the available, water ca.pa.city is low or a-ery low. Natural. fertility and the content of organic ntaa:tter are ti -cry low. �la=-lt aritte attt<l. Ccrp � �eat-f ;;iaae aae tae pe°efeE t cl sae€�iea on these soils. Loblolly pine is also suitable. These soils are suitable for g rowing the preferred species of trees to a size suitable for pulpwood, srmali. S111w logs, or medium -length poles and piling, Eastern redced,ar and Arizona, cypress aro suitable species. to Plant for Christ.nafi trees and as undel.story Species in field whidbreaks. Cherry laurel is suitable in field wind- f;I°oaks., b0fll .t'� at -aa t:ntrlt�_a _ora aiid. aar an m,emstory s,lrecre, Cal{ ; are an itrtportant=;oltrce- of food for wildlife, but; only a limited anmount, of ',corns is pr=oduced on these soils. The site index is 75 to 85 for slash pine, 70 to So fo.F loblolly pine, and 60 to 70 for 101,gl 1` j pine. �, last°e pines are grow n oat these soils, plant. competi- tion is severe. from blackjack oak, turkey oats, and other scrub oaks a.nd wiregrass. Disking, cleariLg, undercutting, and other intensive treatment is .generally .reed.ed to col.- trol comnpeting vegetation orad to prepare. a site for regeneration of the preferred species. Seedling mortality is generally- moderate. Losses of seedlings are. MU.Sed by an inadequate supply of moista.ro and by high telnper,ature of the soil surface. Natural reseeding cannot be relied upon to obtain an adequately stocked stand of the preferred species. Seedlings of high quality and superior planting techniques are required. RK SOIL Si`RVE V for satisfactory survival of the plants. Even then, some replanting Inay be, necessary. Limitations to the. use of equipment are moderate on slopes of tnp to 0 percent. These loose sands give poor traction to ligplrt, rnbber-t iced equipment. They do not provide good support for heavy ma,chiuery. Therefore, extra power is required. Furthermore, I.nachillery used on these soils is subject to excessive wear because of the abrasiveness of the send. Water erosion is nota hazard where the slopes are no greater than 6 percent, but soil bIoNving is a hazard Ut large omen areas. Ini'ind strips are necessary to protect some planted seedlings. Normally, wvindthrow is :not a. hazard. The root rot :fungus (Fonirs ap.n.oms) is a serious hazard tin -here, pines and redeedar are grown on these soils. Seedlings and saplings of loblolly pine are subject to severe daniage by the Nantucket tipmoth. WOODLAND SUITABILITY GROUP 11, This group corrs.istg of well drained or moderately well drained soils of the Creedrnoor, Fnon, Helena, Vance, and White, Store: series. These soils are gently sloping or moderately sloping incl are on Piedmont uplands. The te:xt,ure of their surface layer ranges from m sandy loa to cda.y loam, and their subsoil is friable to firm sandy Claay loam to Clay. Alost areas are uneroded or moderately eroded, but one of the White Store soils that occupies a small acreage is severely eroded. Natural fertility is low to medium, and the content of organic matter is low. Permeability is slow, and the available water capacity is medium to high. Root penetration is restricted in areas that are, underlain by a very firm, plastic subsoil. Loblolly pine is the preferred species on these soils. Shortleaf pine also grows fairly fast, but the slotiv to medium internal drainage of these soils makes that spe�des susceptible in some. places to , -eve daana-gc, from littlelea,f disease. j'irgamal pine, is suited to the severely eroded 11rhite Store soil. The uneroded or moder- ately eroded soils are suitable for growing trees to sizes that, can be. harvested for pulpwood and sa,w logs, and trees grow larger on those soils than on the severely eroded soil. The severely eroded White, Store soil is rela- tively low in productivity and has limitations to use for commercial growing of wood crops. Trees should be planted oil this severely eroded soil, mainly to protect it from further erosion. F,istern redeedar and Arizona cypress are. suited to the. production of Christmas trees. Oaks, hickories, blackgum, persimmon, American holly, black cherry, pine, and cedar growing on these soils provide food and cover - for wildlife. On the uneroded or moderately eroded soils, the site index is 75 to 85 for loblolly pine (fig. 1I), yellow -pop- lar, and sweetgum and 60 to 70 for short.leaf pine. On the severely eroded White Store soil, the site index for loblolly pine is 65 to 75. Where the soils are uneroded to moderately eroded, Pines are subject to moderate to severe competition from undesirable hardwoods a.nd other plants. In some places disking, blading, and the application of herbicides are necessary to control competing vegetation. Seedling mortality is generally slight, oil the uneroded to moderately eroded soils. Oil those soils an adequately stocked stand usually can be obtained from natural seed- ing If enough seed trees are, present, if the site is properly prepared, and if cominetin�r yeget<rttoilis controlled. Seed- ling mortality is moderate to severe oar the severely eroded White Store soil. Ort. that, soil check dards, nnrlch- ing, fertilization, and a protective cover of grassc s a.nd legumes are needed to obtain an adequately stocked stand. Natural seeding cannot be. depended upon to reproduce a full, stocked stand. Llrnita-tions to the use. of ealaaipment are slight can slopes of up to 15 percent, anal they tire model ate ort slopes betas eetr 15 and 25 percent. On the severely eroded INrhrte Store soil, however, restrictions are rnoclex Arte on the use of equipment during dry periods on slopes of2 to 1,5 percent. They are severe where the slopes are. more than 15 percent;. Iii wet periods the use of equiprraernt is sever cly restricted by tlae. sticky and very plastic, c,laycy subsoil. On the uneroded to moderately eroded soils, the hazard of water erosion is slight: on slopes of up to 6 percent. It is moderate on slopes between 6 and 10 percent, and severe on slopes steeper tlia.n 10 percent. Firebreaks and roads should be, run on the contour wherever feasible to protect therm from erosion. A protective groruncl cover should be rnainta,ined insofar as possible. The haze d of erosion is serious ori the severely eroded 1�'llite Store soil. The, hazard of windthrow is slight, to moderate where the soils are uneroded to moderately eroded, but it is severe ori the severely eroded 111hite, Store soil. Littleleaf disease can severely damage shortleaf and loblolly pines. WOODLAND SUITABILITY GROUP 12 In this group are soils of the LouisburP,:, 117ecdowee, Pinkston, Wake, and Wilkes series. These are well - drained to somewhat excessively drained, gently sloping to steep, shallow soils oil Piedmont uplands. The texture of their surface layer is variable, and in some places the, surface layer is stony. The subsoil is firm to loose loamy sand to clay loam. Depth to bedrock ranges fI:°ori less than 20 inches to more than 50 inches. The, conternt; of organic matter is low, and natural fertility is lose to medium. Permeability is moderate to rapid, and the available, water capacity is low or verb* low. Bedrock limits the penetration of water a,ud tree roots. Loblolly pine is the preferred species for pralpNvood and saw logs. Shortleaf pine is suitable on the nur:a e favorable sites. The. deeper soils can be used for groxvin;; trees to sizes that can be harvested for pulpwood, saw lois, or poles and piling of ine.dium length. The shallow aaad the steep soils should hegiven an onsite inspection to determine. If trees should be planted and intensively nnarna,ged, for commercial wood product,,. As a: rule, plant- ing of trees in these areas is feasible only for controlling erosion and protecting the soils. Arizona cypress and eastern redeedar are suitable for the production of Christmas trees a.nd as under story trees in field windbreaks. These soils are not suited to the commercial production of hardwoods. The site index is 70 to 80 for loblolly pine. Zt is 60 to 70 for shortleaf pine. WAKE COUNTY, NORTH CAROLINA 83 Figure Ii.A well-managed stand of loblolly pine on Creedmoor sandy loam, 2 to 6 percent slopes, eroded. The trees have been thinned periodically to increase their growth and to improve their quality. Plant competition is slight• to moderate where pines are grown, depending on the depth of the soil over bed- rock. In disking, girdling, and the application of herbicides are needed to control undesirable vegetation. Seedling mortality is generally moderate, but it can be severe on the very shallow or on the steep soils. Seed- lings of high quality and superior planting tech ' 11M are needed to adequately Stock an area -v �irith pines, replanting may be required. A well -stocked stand cannot ge obtained through natural seeding. Restrictions on the use of equipment are slight on ,lopes of up to 15 percent, moderate on slopes between 15 and 205 percent, and severe on slopes of more than 25 Percent. Shallowness, a plastic subsoil, boulders, and lock outcrops can severely limit the use of equipment on all slopes. Operating heavy machinery during wet peri- ods, especially on the Wilkes soils, can damage the struc- ture of the soils and seriousl_l, injure the roots of trees. The hazard of water erosion is slight on slopes of up to 2 percent. It is moderate on slopes between 2 and 6 percent and severe on slopes of more than 6 percent. The development of roots is restricted by bedrock near the surface and by the droughtiness of these shal- low soils. As a result, the hazard of windthrow is gen- erally severe or very severe on these soils. WOODLAND SUITABILITY GROUP 13 This group consists of three miscellaneous land types— Made land, Gullied land, and Borrow area. The texture and consistence of the soil material varies greatly frown one area to another. The depth to which the roots of trees and water can penetrate is also widely variable. 84 Soil. SURVEY Onsite, investigation is required to determine how an area can, best be, inanaged for trees. The potential productivity of these land types for trees varies widely. Where soine surface soil remains, merchantable trues can be, grown between the. gullies. As a rule, however, the site indexes are very lo -%v for these land types. Loblolly pine, and Virginia pine are the pre- ferred species for planting, bnt redeedax is also suitable. Competition from undesirable plants is generally slight where erosion is still active. Where a cover of plants has become established and the soil inaterial is stabilized, plant, competition is severe for the limited sapply of moisture.. Seedling nioriality, as as rule, is very severe on these land types, unless special preparation is given ven to the site,. Land leveling, disking, construction of check dams, s imilching, fertilization, and the establishment of a, pro- tective cover of grasses or of grasses and legumes are required if ,ill adequate stand of trees is to be established, and erosion is to be controlled. Even where these prac.- tioes are applied, extensive replanting is sometimes neces- sary. Seedlings in ust, be, I)l anted by halid. The use of most equipment is severely restricted by gullies. Erosion iiill continue to be a, very severe hazard in the areas of Gidlied land and in other crallied areas until. a protective cover of plants is established. The hazard of windthrow is very severe for all kinds of trees. Tn places loblolly pine "die oiit", and littleleaf disease are likely to be severe. WOODLAND SUITABILITY GROUP 14 Swamp, a. miscellaneous hind type, is the only mapping unit, in this group. It, is very poorly drained and is under water most, of the tinie"This lta,nd type is at, the heads of manmade. lakes, and it consists of variable soil material. Swamp tupelo, red maple, sweotgum, smooth alder, and other water --tolerant trees and shrubs are chanteteris,tic. of the re"etation in areas Of Swamp. if drainage and protection from flooding are provided, however, loblolly and slash pines can be grown. Inter- pretations on the potential productivity are, not provided for this 1,111d type, beoftilse, of the Inek of infornlation. Use of the Soils for Wildlife", The soils of Wake County produce food. cover, and Protection for many kinds of wildlife. Doves', ducks, fox, quail, rabbit, squirrel, snipe, turkey, woodcock, and non- galue birds are the most coinmon kinds of wildlife in the county. Deer and geese are, less numerous. Deer mainly, frequent the northwestern corner of the owinty imd scat- tered areas along bottoins of the, Neuse River. A- small flook of Cftnada" geese, spends the "N'inter each year Oil Lake, Wheeler. Wood ducks, inall:irds, hooded mergansers, and black ducks are fairly ninnerous along the rivers,,, larger creeks, and savamlas. The wood duck builds its .nest in hollow trees along the rivers, near large creeks, aild in Hie swamps. Graenwing teal, rhignecks, raddy ducks, scaup, and widgeons inhabit, the larger lakes and farm ponds in fall, in winter, and early in spring, and canvasbacks, "i 3y P. R. SMITI-T, Jlz., bio'o,-ist, Soil Conserration Service. buffleheads, gad-,valls, mergansers, and pintails also visit those areas. Two other gaine birds --.the Wilson snipe and the, woodcock --frequent, areas of wet'land in Wake, County. 'I'llese, same areas, of wotland provide habitat for such furbeavers ais beaver, mli&, muskrat, and otter. Turkey, 1'.11CCOO11, and squirrel. also share this habitat and are fairly common along wooded bottoms of streams and in 0,11011 large tracts of woodland. Doves, fox, quail, and rabbit are abundant througjiout most of the county. Fighiiig is fair to excelleait in the many farm ponds and Likes throughout the, county. as «~ell ars in tine. large titxvanis. Bas", 1)[11PgillS, and --ibell crackers are t1w 111211,11 kin(ls of fish in the farin ponds. Bass, bluogills, bull - beads, crappies, channel catfisil, pickerel, and red brea,sts andI g other kinds of sunfish inhabit the lakes and large, s s l reams. The food of various kinds of wildlife differs widely. The abundance of a particular kind of wildlife depelld's, to a great extent,, oil the presence, or absence of choic.e, foo(Is for that species. In tile following paragraphs, the, food and habitat requirements of tile, _Tnajor kind,, of wildlife are discussed. BEAvrPz.—Be,tvers eat; only food obtained from plants, mostly bark., roots, tender twigs, and green plants. Their favorlte food is the tender bark, or cambium, of alder, ash, birch, cottonwood, hornbeam, inaplo, pine, sweet - gum, and willow, but acorns and corn rare. also choice, foods. In addition, beavers eat flie tender sboots of elder, honeysuckle, grass, and -weeds. The main feeding areas are. within. 150 feet of water, BOBW1-1ITr,_--Bobwhites (quail) etit aeorns, beechnuts-, blackberries, browntop millet, wild black cherries, corn., cowpeas, dewberries, annual and shrub Iespedezas, Milo, mulberries, paniegrasq, pecans, common ragweed, soy- beans, pine seeds, and the fruits of flowering dogwood and qweetguni. They also eat many insects. Their food insist be close, to sheltering vegetation. Many kinds Of habitat, including areas of. _W,00dland, brush),- areas. arenas of grassland, and open fields, are suit,61e for thes-CA but the best habitat is one, that has a variety of cover types. eat acorlis, clover, CONN-poas, greenbrier. honeysuckle, annual and shrub lespeda7as, oats, rescue - grass, rile, rvegrass, sovbe"111s, ,111d wheat. They need an adequate, supply of surface water for drinking, and wooded areas, 600 acres or snore in sizEw, for cover. Food plants for deer should be well Timed and ferfilizod. DovP_,,--J)ove,., eat brovaitop millet, corn, Japaneso millet, Pokeberry seeds, oomnion rag - weed, guain sorghurn. ' the seeds of Pine and sweetgunil, and other kinds of seeds. Doves do not eat, insects, I green leaves, or fruits. They drink water daily. Doves prefer to land in open ireIS. Therefore, they need feeding areas and watering places,�7' free of tall yr,,-Lss Or brush. Dc ('1C.—Diteks em acorns, beecli'llits, browntol) millet, corn, Japanese :pillet, and sjnarrrvced, which nill-t be covered by water to be, Peadil,), available. Occasionally, ducks eat, acorns and gain on dry land. 0'rr,,r,sr,_---Ge(,se feed in open &ds and in shallo-w water. Their choice foods are the roots, stems, and leaves of aquatic plants, and wheat, corn, soybeans, and other grains. Geese graze on clover, pasture grasses, and youlig WAKE COUNTY, NORTH CAROLINA small grains. When they are not feeding, they rest on bodies of water. Fox.—Foxes feed primarily on small animals, gen- erally rodents, but they also eat apples, persimmons, acorns, cherries, grapes, corn, blueberries, and peanuts. The red fox prefers open fields and farmland for his habitat. The gray fox generally remains in wooded areas and in patches of dense brush. MINK.—These furbearers feed on fish, reptiles, am- phibians, birds, and small mammals. They live near water. MUSKRAT.—Muskrats feed on cattails, bulrushes, bur - reeds, rushes, pondweeds, and many other aquatic plants. They also eat some corn, soybeans, and other crops. Ponds, lakes, marshes, swamps, and streams provide the habitat for these animals. OTTER.—Otters are primarily carniverous. Their prin- cipal food is fish, mainly coarse and undesirable species, and crayfish, water beetles, water birds, and clams. Occa- sionally, they eat water -loving mammals. Swamps, streams, and lakes are the habitat of otters. RABBIT. -Rabbits eat clover, winter grasses, and other succulent vegetation. They also eat waste grain, bark, and twigs. Rabbits especially need cover, such as black- berry or plum thickets or patches of honeysuckle. Food plants that are well fertilized and limed are more at- tractive to rabbits than those that are not. RACCOON.—Raccoons eat many kinds of foods. Among their favorite plant foods are acorns, chufa, greenbrier, grapes, persimmon, pokeberries, corn, hollyberries, and pecans. Favorite animal foods are frogs, crayfish, grass- hoppers, insects, and small mammals. Raccoons inhabit bottom lands and swamps where den trees are plentiful. SNIrE.—The Wilson snipe feeds on earthworms and on the larval forms of many kinds of insects. This game bird returns to Wake County only in winter, and it lives in areas of wet grassland or marshes. SQUIRREL. -These animals eat acorns, beechnuts, black cherries, black walnuts, corn, hickory nuts, mulberries, pecans, pine mast, and the seeds of blackgums and flowering dogwoods. The gray squirrel inhabits mixed stands of hardwoods and pines or pure stands of hard- woods. The fox squirrel is rare in this county. Its habi- tat is restricted to open stands of pines and hardwoods. TuRKEY.—Turkeys thrive only in large areas of wood- land, generally 1,000 acres or more in size. They need surface water daily for drinking. Turkeys often roost over water in the overhanging branches of large trees. Their choice foods are insects, acorns, beechnuts, black- berries, browntop millet, chufa, clover, corn, cowpeas, wild -grapes, hackberries, mulberries, oats, paspalum seeds, pecans, pine mast, rescuegrass, rye, wheat, and the fruit of blackgum and flowering dogwood. WOODCOCK.—The woodcock is primarily a migrant who visits this county in fall and winter. Woodcocks inhabit areas of wet woodland, where they probe the forest floor for earthworms, their choice food. These birds are rarely found in the open during the day. NONGAME BIRDS. -The food preferences of nongame birds differ widely. Several species eat nothing but insects; a few eat insects, nuts, and fruits; and others eat insects and seeds. Many desirable kinds of nongame birds, such as bluebirds, cardinals, robins, mockingbirds, and tanagers, can be attracted by planting dogwood, holly, Russian -olive, cherry -laurel, pokeberry, privet, pyracantha, multiflora rose, smooth sumac, and sun- flowers. Flsm—The choice foods of many fish are mostly aquatic worms and insects and their larvae. Bass, pick- erel, large catfish, crappie, and other predators eat small fish. The abundance of such foods is directly related to the fertility of the water, and in a lesser degree, to the fertility of the soils at the bottom of the ponds and lakes. Wildlife suitability groups Most kinds of wildlife can be related to the soils in a two-step relationship. Each species is related to its choice foods, and, in turn, each plant is directly related to the soils. In this subsection the soils of Wake County are placed infive groups, based on their capacity to produce plants that provide food for wildlife. The "Guide to Mapping Units" at the back of this survey lists the wildlife group for each of the soils. In table 3 many of the plants used for food by wild- life are listed alphabetically and the suitability of each plant for the soils of four wildlife groups is rated. Wild- life group 5 is not included in this table, because the properties of the land types in this group are too vari- able for meaningful ratings to be assigned. With a knowledge of each animal's food require- ments and of the suitability of the soils for the growth of particular plants, the symbols on the soil map can be used as a guide to the selection of areas suitable for specified kinds of wildlife. The characteristics of the soils in each wildlife group that are significant to man- agement for wildlife are described in the following para- graphs. WILDLIFE SUITABILITY GROUP 1 This group consists of well drained or moderately well drained soils on terraces and on ridges and side slopes in the uplands. These soils are mainly gently sloping to strongly sloping, but they are nearly level in some places and are moderately steep or steep in others. They are in the Altavista, Appling, Cecil, Creedmoor, Durham, Enon, Faceville, Georgeville, Goldsboro, Granville, Helena, Herndon, Lloyd, Madison, Mayodan, Norfolk, Orangeburg, Vance, Wedowee, and White Store series. The texture of their surface layer ranges from loamy sand to silt loam, except that it is clay loam in severely eroded areas. Their subsoil is friable sandy loam to very firm clay. In places gravel is on and in the surface layer. These soils have low to medium natural fertility and medium to high available water capacity. Surface run- off varies considerably because of differences in the tex- ture of the soils, in the steepness of slopes, and in the kind of ground cover. The degree of erosion ranges from none to severe. WILDLIFE SUITABILITY GROUP 2 This group consists of well -drained to somewhat poorly drained soils on first bottoms, on terraces, and in draws and depressions in the uplands. These soils are in the Augusta, Chewacla, Colfax, Congaree, Lynchburg, Mantachie, and Wahee series. The texture of their sur- face layer ranges from sandy loam to silt loam, and their subsoil is sandy loam to very firm clay. 86 SOM SURVEY TABLE T—R u.Wb1t; y of pla-aM for soils in fauns, wi-ldlifc fjrortps and as food for gmc¢ftcd kinds of wildlife; €'4"ildlde groups Food plants .. __... _. Choice foods for - 3 1 4 Good .__._', Poor_____ Alder____ .............__ ____ Fair_____ (load_._.._ Apple___________ ----------------------- (_rood_---'' Fair___.__ .ash--- -------------------- ---- Fair- ..--- Good____ PahiaE;;rat,5- ..---- ..... (load---- Good ---- Beech -------- --- - Good---- Good.. J37aze kbe rry and do,�t berry _ _ _ . _ _ Fair --_1 (Food - _ _ Black Cherry -__ ---- _ -- Good -_-1 (,00d--_ BIa Agum,_-_ .__ F;ril°-.__-- Good_..._ Blueberry- - — _ _ _ I+aur----- Good---- Bmwntopmillet-. _- - -----. Good__...�I Good_...._ .. __... _. Choice foods for - 3 1 4 Good .__._', Poor_____ Beaver. Poor-- _ _ Fair i For:, deer. Fair._ - _ .... Poor_ _ _ _ _ Wood duck, bea, r. Faa itFair- _ . T€rrke,yr. Poor_...-.. -� Poor_. _ . F3o}�iwhit€�, duck, squirrel, turkey. Fair ; Pak.. ... Bobwhite, turkey, lwngnnie bird>,. Fair _� Fiu. -_ Bobwbh , squirrA, fox, nongame bird-. Fair _ _, I.ru_..__ Sc;un'rcl, tiursteyy, nong.arne bird'. Fait_____ T'oar____- Turkey-, nongamc�'bir•d,,,. TOA Poor----- Bobwhite, dove, duck, turkey, nongame, Good --J (.good --__I! Poor-­­ Clover, oor___.._Clove , crimcion_-- - - ----- Good __ (,()ad----: Poor Clover, white--_- - (food - Good Poor_ Corn_,_, -- (rood ---I Good Fair, - Cowpca.-- dogwood----- .. Elderberry- - - Foactte__-- Graape, wild Greenbrier_ Blaa.ckberry__ Rickory-_ Holly -- Loney - _ •uckle ---- HornI) ani_ -_- - -. -- ----.. .Ia,panew mrllet... ..... - -- PeVeMaa., annual)_ _.. Lespedeza, shrub _ - -1 Magnolia ---------- Maple -_- _-- laplc --- ---- Mulberry Oalc (post, blackjack, southern red, se:arlet, bIaN, and whim). Oak 'swamp chestunt, water, willow) - -- (h€,is----------- ------------ Pa.nhyrass---_ -_ - - Paspalutn (bull)- .. . _ _ --- -- - _- Pennut--------- -- - --- -- - --I Pel'sillinlotl_.---------- ----._--_--_---__._�i Pine___.------------- .------ _......_I Plum, Chickasaw____.....----_....._____------ Poisounvy---__ -- ------------ -- Pokeberry ------- --.---- Privet --------- __Prive't--------------------------- -- Pyrneaantlut_ - - Ragw•epd____________________...__..___._ R.escucgrass------ - --------------- Rt I R.c( ------------ - ----------- Ryvgrws-- -- Servieeberry------------------------------- Sinart—,weed------ _ ---_---,---------------- Sorghnln, gr:.tin---------------.-_-._.__ - Soyhean"----------------- .......... S1ratwber2 yr -bush Sunflower----------------- -- ----- -- Sweetgnm____..__-__. _---- ------------ ._- Tiekelover----- _ —-------- - Who= ......... . -- . -..----------- (load_ _.. Fair _ _ wood- Fair ----- (rood --- (.Rood ---- Pool .... Good __W_ Good Good _-- Ftair____,. Fail._ - Good - Good - Fuir_____ Fair- Good -- Good - Fair __-__ Good_ Fdr- --- Fah _ ---Good---- Good _-_- Good__ -- (rood-__.. (:rood Good Good Good Good _ _ _ Good .... I (food,_ _ _ -, (Iood____: Good _-__�I wood____., Fair ---_-i Fair ----- G ood ____Good Good --_- Good____ Coad-_--'. (` good____. Good____ Mod_. Fair, ---- 1+air-_,__._ (food---- Good- Fair (food,, rood__-- (Food_Fair(food__ (rood____ Good .... (load .... Good --_ Good--- (food---- Good .... __-Good.____ Good .... Good - --- Good. _Good _-- Good _---, G and Mod_-__ Good ---_ Good--_ _ Fair----- Good- - Good ----j Good. Good- --- Good - _ __ (Iood____ Good ---- (food. ... ood---_wood_.___ Mod .... Good---- Fair --- _ - Good____ Good _-_.. Good___- Good---- uood---- Good- Good ood_ Good_ Good_ ___ wood---_ Good-. _ . - Good___ - Poor. (loud - Pool ------ Fail ------ Fair Poor (:aod Fair ----_- Poor_-.... For, .-- Fahr Faair For— -- Poor _ .-- Poor-----' Pair_..__ Good_ Poor Fair- - - - - Fair- - - - - For --- (load. Poor_-___ Poor._____ For.. . Mr air-- Mr --_ Fair_ _ . Poor_ _ Fair_ - - Poor... Fair- _ Fair - Poor- aair-Poor_ - _ Poor_ _ _ _ Fair- Fair - For - aair-Fair_For_ Poor•.___ Fair - Fail°- _ Poor_.____ Fahr- _ ---I, poor_ _ _ _ _ Pout•_ Ivair - - - - - Poor - Poor .... _ Poor_ .. _ F t:r Poor_ _ - For - Pool ------ Poor------ Fair-- Poor- Poor, - Frir--Poor-Poor_ Poor- _.... Poor- _ _ Poor-_ _-- Poor- Poor- Poor- ___-i Poor Poor_.._. Poor ____I Poor__ - Poor._ -- Poor ----- Poon. - - - - ----Poor_.____ Poor..-_-- Fol ------ Fair- _----Faair_ _ Fair_ _ _ _- Poor_ _ _-_ Fahr.._ Frrir_-_-- Faair_..___ Fair----- Poor_, F:LIr_____ Poor ----- Poor- I'oor_____; Poor---- Pool.. ---Poor.. Poor -_-_- Poor_.----I Poor - Pool -- oorPoor----_Poor_Poor ._ _..... Poor_ W:durt., black__..... Good - (food--__ Poor_ Poor_---- Fellow -Poplar_---- ------------- --- — Good_ _ - Good _ Fair--; Poo;•_ --_- birds. Ratccoon, turkey-. Deer, rabbit, turkey-. Doer, rabbit, titrkey. Bobwhite, dove, duck, raccoon, squirrel, turkey, nongame birds_;. Bobwhite., deer, turkey. Squirrel. Bobwhite, squirrel, turkey, nongaatne birds. Nongame birds. Deer, rabbit, turkey. Raccoon, turkey-, nongnmo birds. Doer, raccoon. Turkey, Squirrel, nongame birds. Squirrel. Raccoon, nongame birds. Deer, nongame birds. Wood duck. Dove, duck, nongnuiv bird. Bobwhito, deer. BubmMe, deer. Squirrel, nongame bird,. Sgnitrc;l. Bobwhite, squirrel, turkey', iwnpune birds. Deer, duck, raccoon, squirrel, turkoy-, noll•• game birds. Deer, duck, rnecoon, squirrel, turkey, non- gaarne birds. Doer, rabbit, turkey. Bobwhite, dove, n0ngft1uC, birds, ratbbit. Bobwhite, dove, nwgaame birds. Bobwhite, nongarine birds. Bobwhite, raccoon, squirrel, turkey. Raccoon. Bobwhite, dove, squirrel, turkey, nonganic, birds. Squirrel, bobwli te. Rabbit, quail, nongame birds. Dore, raccoon, nongaine birds. Non,pune birds. Nongame birds, turkey. Bobwhite,, dove, nougaanie birds. iZr, gnme birds, turkey. Deer, rabbit, turkey. Deer, rabbit', Beaver, nongame birds. Durk. Bobwhite, dove, nongame, birds. Door, rabbit. Deer, rabbit. Dove, nongame birds;;, quail. Bobwhite, dove, nongame birds. Bobwhite, turkey, nougante hish. Bobwhite., dove, deet, nibbit, turkey, non - game birds. Squirrel. I)cel•, squirrel. WAKE COUNTY, %ORTH CAROLINA These soils have low to ittedium natural fertility and medium available eater capacity. Surface runoff is slow, and the. degree of erosion is none to sLight. WILDLIFE SUITABILITY GROUP 3 This g ` roup consists o poorly drained or very poorly drained soils on first bottoms and 'low terraces and in upland draws and depressions. These soils are in the Plummer, Rains, Roanoke, Wehadkee, Bibb, and Wor- sham series, and the group also includes the, mapping unit: Swamp. The soils have a surface layer of sand to silt, loam, and a subsoil of sandy loam to very firm clay. Natural fertility is very low to medium, and the a.vail- able water capacity is 1.ow to medium. Surface runoff is slow. These soils are commonly covered with water in winter and for short periods during other vet seasons. WILDLIFE SUITABILITY GROUT' 4 This groilp consists of well drained or somewhat ex- cessively drained soils of uplands and first, bottoms. `Chew soils are in the Bimeoanbe, Loiiisbitr,(r, 1'4redolvee, Pinkston, 11'a -grain, rhroup, Wake, and Wilkes series. They have a surface. layer of sand to silt loam, and their siirftiee layer is underlain by sand to sandy clay. Some areas are stony, and in places gravel is on and in the surface layer. These soils have very low to medinni natural fertility and low or very low available water capacity. They are nearly level. to steep. Surface runoff range's from slow to rapid, and the degree of erosion ranges from slight to moderate. WILDLIFE SUITABILITY GROUP 5 This group consists of three, miscellaneous land types —C'i lied land, Made land, and Borrow area—consisting Of soils that have been altered greatly by erosion or by man. The soil texture and other soil characteristics are so variable from one, area to another that onsite investi- gation is required to determine how an area can best be used for wildlife. If some of these areas are given special management, they produce habitat for wildlife, but re- sults are generalfy poor. Sone soil properties are of special interest to engi- neers because then affect- the construction and Ina.inte- n<1.nce of roads, airports, pipelines, building foundations, fa'cilit'ies for tivater storage, erosion control structures, drainage, systems, and sewage disposal systems. They also offect the suitability of materials for subgrade, road fill, and topsoil. The. properties most; important to the engineer are permeability to water, shear strength, com- paction characteristics, soil drainage, shrink -swell char- a,cterist,ies, grain size, plasticity, pH, depth to the water table, and topography. This soil survey contains information that; can be used by engineers to --- 1. Make studies that will aid in selecting and evalu- ating areas for developing industrial, business, residential, and recreational sites. 9. T. CrItlax, civil engineer, oil Conservation service, tu„3isted in gaiting, this .section. Make preliminary estimates of the engineeI'll ag properties of soils ill plaarning for agrmcultur'll dranlage systeans, farm ponds, irrigation ses€e:nms, diversions, and terraces. 3. -fake preliminary evaluations of soil. and ground conditions that will aid in selecting locations for higlrtivays and airports and in planning detailed investigations for tile, selected locations. 4. Locate sources of construction materials. 5. Correlate the performance of engineering strrmc- tures with soil mapping units so that, informa- tion useful in designing and maintraining° the structures call. be obtained. 6. Determine the suitability of the soils for cross. - country movement of vehicles and construct -ion equipment,. 7. Supplement information from other nra,ps and reports and from aerial photographs for the pur- pose of making maps and reports that, can be readily used by engineers. With the. soil mala for ideniificaation of soil areas, the engineering interpretations reported here can be itseful. for many purposes. It should be emphasized, however, that these interpretations rnav not e.lirninate the. need for sampling and testing, at the site, of specific oligineer- ing works involving heavy loads and where excavations arse deeper than the depth of layers here reported. Every in these situations, the soil snap is useful for planning more detailed field investigations and for suggesting tyre l rods of problems that may be. expected. Some of the terms used by the soil scientist may not be familiar to the engineer, and some words, for ex- ample, soil, clay, silt, and sand, have special meanings ill soil science. Most of these terms are defined in the Glossary at the back of this survey. To make the best. use of the snap and the text, the engineer should understand the classification system used by soil scientists. He should also have a knowledge of the properties of the soil inaterial and the condition of the, soil in place. 1Tuch of the information in this section is in tables. Table 4 gives engineering test data obtained when samples of selected soil series were tested. 'fable 5 gives estintates of the properties of the soils, arid table 6 pro- vides engineering interpretations of these properties. Engineering classification of soils Z�Tost higlr�va.y engineers classify soil materials tieeord- ing to the system used by the Americaam. Association of Shite Highway Officials (AASH0) (1). In this system soils are classified in seven principal groups. They range from A -i (gravelly soils of high bearing capacity) to A-7 (clayey soils having lo%v bearing capacity �vlzer� wet). The relative engineering value of the soils within each group is indicated by group index: numbers, which. range. from 0 for thee, best nnmterials to 20 for the poorest. The group index numbers calm ire deterrltured accurateD, only if the soils have been analyzed. The group indexes for the soils t-b<rt have been analyzed are shown ill table f. 8$ SOIL SIIRVFY [Tests were performed by the North Carolina State Highway Commission, Department of 'Materials and Tests, Raleigh, N.C., under a the American Association of State Soil name and location Appling sandy loam: In a forest 20 yds. S. of a private road; 1 mile N. and one-eighth of a mile F. of Bethany Church. (Alodal profile) In a field 5 yds. N. of a paved road; 1 mile N. and 400 ft. F. of Bethany Church. (Shallower and finer textured than modal profile) Appling gravelly sandy loam: 3 miles N. of junction of N.C. Highway No. 50 and U.S. Highway No. 70 near N.C. Highway No. 50. (Finer textured than modal profile) Creedmoor sandy loam: N. of airport and near U.S. Highway No. 70, (Thicker than modal profile) Durham loamy sand: In a field 5 yds. S. of a gravel road, one-focirth of a mile D. of Bethany Church. (Thicker than modal profile) Madison sandy loam: 1.75 miles W. of the bridge across the Neuse River along N.C. Highway No. 98. (Thinner than modal profile) 1.75 miles Nei'. of Pleasant Union Church .along dirt road. (Modal profile) Parent material Granitic gneiss. Quartz mica gneiss. Quartz mica gneiss, Tria@sic sediment, Granite. Quartz mica w1ist. Quartz mica schist. Alayodan gravelly sandy loam: West of N.C.;. Highway No. 5.5, and one-half mile Triassic; material. N. of V.S. Highway No. 1. (Thicker than modal profile) i' White Store silt loam: Cine -half mile V. of Tont Tack Creels. (7k\1oda1 Triassic. siltstone. profile) Report No. I Depth S64 NC_92 12-1 12-3 12_S Ll- 1 11--4 11_8 S6, 3 ti'C--9,2 5-1 5-4 5-7 4-1. 4--4 4-5 4--7 864XC 192 1.0-1 10-3 10-8 eS63NO-91 6-1 6-3 6-5 2--1 2-3 2-7 3-1 3-5 3-7 1-2 1_..4 1--9 Aloistom density s Maximum ! Optimum dry density moisture hi. Lb. per cu. ft. j Per. 0-5 120 11 11-20 98 23 44--50 ---- -------I ------ - 0-7 123 10 13-20 85 33 38-45 95 24 0-4 11-23 43-48 0-6 17-27 27-40 86-96 0-15 18-30 81-105 1--5 8--16 24-48 W-6 9-19 51-59 0-7 25--38 55 -fig i e 2-S 10-19 40-4e3 119 ! 1.1 89 ! 29 103 I 20 114. 100 11 22 92 1 23 104 18 129 8 107: 18 106 16 117 14 95 26 101 21 118 12 57 [. 32 93 24 132 j 6 89 30 ah 31 109 '• 15 92 27 116 14 I Based on AASHO Designation T 99-57, -Methods A and C (t), aX'lechaanical fauaalyses according to AASHO Designation T 88-57 (1). Results by this procedure may differ somewhat from resulfs obtained by the Soil survey procedure of the Soil Conservation Service (SCS). In the AASHO procedure, the fine material is analyzed by the hydrometer _method and the various grain -size fractions are calculated on the basis of all the material, including thrid: coarser than 2 mm. in diameter. In the SCS soil survey procedure, the fine material is analyzed by the pipette method, and the, material coarser than 2 mm, in diameter is excluded from calculations of grain -size fractions. The mechanical analysis data used in this table are not suitable for use in naming textural classes for soils. WAKE COUNTY, NORM CAROLINA �,-st data ;ooperative agreement with the V.S. Department of Commerce, Bureau of Public Rotads, in accordance; with standard test procedures of Highway Officials (AASHO) (.t)) e :Tr chanica,l analysis 2 � i I Plan- Classification Percentalge passing sieve— i Percentage, smaller than—', Liquid t.ia;itti -- ......... _ limit index ---_-- - No 4 No. 10 No. 40 I No. 200^1 0.05 0.02 j 0.005 0.002 i (4.7 (2.0 ( (0.42 (0.074 rant, rnm. I min. mm. I AASH0 S unified I Inrn.) min.) nim.) mm.) i E , 100 97 96 93 50 25 24 20 j It 7 24 2 A -1-b(0) j S - XI 100 99 L 77 62 62 61 54 48 64 29 A--7-5--(16) AlH 100 ( 98 79 58 i 57 51 I 38 35 1 63 20 A--7--5(11) I idles 100 1 98 61 28 1 24 20 12 pp 8 1 ` 20 2�, A --2-4(0)S\4 -- -. _ f00 92 82 j 81 79 75 1 71 74 33 A-7--5(20) 1�IH --------- 100 84t 55 55 53 I 47 35 32 K7 16 A-7-5(8) 1\11-1 100 78 44 1�0o 41 99 36 95 ! 13 ! 77 11 76 1 8 3 74 5 68 60 ' 66 { 35 A-7-5(20) CDIb 10X3: -CH - -- _- - 100 i 95 88 58 54 I 46 39 i 36 48 24 A-7- 6 (.11) C`,L ..... -_ - - - - _ _ _100 80 45 { 39 22- 9 7 NP { NP ' A-4(2) S ie1 _ _--------------- - _ _' 100 91 79 76 64 50 j 44 69 43 A-7-6(20) CH -- 100 97 - 88 84 76 60 53 79 49 A--7-5(20) CII _-_---__---- 100 92 T6 ; 73 61 34 23 43 18 A-7-6(12) CL-. _--------- 100 60 24 j 22 18 I 10 6 11 ! NPI A-.2--4(0) j SAI ------------- - 100 64 I 4 9 -----� 4.9 44 j 42 b3 21 A-7-5 � (8) SVT ___ __-__�i____-_-_I 100 67 I 21 17 13 b o � NP ' NP � A-2-4 (0) 19M - 100 96 85 28 24 20 14 10 22 NP A-2-4(0 ,Sill ----100 100 ',. 93 65 65 64. 12 : 49 66 36 A--7-5(17) ! CH 99 88 39 38 28 i 17 14 40 3 A-4(1.) j S1\1 1 100 88 62 58 50 j 19 15 15 10 8 29 5 A --1-b Sill 100 99 95 76 76 75 65 63 82 j 46 ! A-7-5(20) C1i--XI H �_-- _ -----__-' I 100 95 1 24 ° Z.3 20 I 12 11 46 1 NP A-2 5(0) 53. 100 78 42 40 29 ; 1I 9 6 3 ! 2 NP N. P f A 1 a Gp-GM _ 100 95 88 S7 84 66 55 i 73 37 ! A-7- 5(.20) MH -- -- ---- -_. 100 97 91.( 90 88 62 50 81 43 A 7 -51 20) AIIT 94 85 75 63 60 39 r 13 9 24 I 2 4(SjIL - _ - - - 100 99 97 95 9., 92 69 60 i 80 ', 47 A -7-5(20) CH _ 100 98 84: 6S 65 so 29 15 ata 12 A --(!(S) CL --AIL I Based on AASHC Designation M 145-49 (1). 4 Based on the Uzi -tied Soil Cla-.ssiS.cation. System, Technical. Memorandum No. 3--357, v. 1 (17). SCS and BPH have agreed to cosnsider that all soils having plasticity- indexes -within two points from. A-line are to he given a borderline classifr cation, .:3n example of a4 border- line classification obtained by this use is CL --?OIL. Nongla-stic. RO SOIL SURVEY' `1'ABL-E. 5.--E8b'7 a1td [Dashed lines in columrls mean that soil properties are too variable for reliable estimates to be made. Miscellaneous laild hypes I Depth to ])epth (ln's,Afiention Deptli to 5enuonally ��, from I Soil series and map -y inbol bedrock high tinitace water (typical Dominant b1SDA texture � table profile) I Altavista (AfA)--------------------------------- rippling (A. -B, AgB2, Ar�C, AgC2, ApB, ApB2, ApC, ApC2, ApD, As B, As B2: AsC, AsC211 Augusta(Au)-------------------------,__-_-___ Bibb (Alapped only in ail undiliereiWated unit with Wehadkee soils). Buncombe(Bu)--------------------------------- Cecil: (CeB, CeB2, CeC, Ce.C2, CeD, CeF, CgB, C_,B2, CgC: C;C2). (CfM, CIC3, CIE3) -------------------------- Cliewacla (C m)_________________________________ Colfax(Cn)_-.-----------------------------------''. ("ong"Irre (Co, Cp) ------------------------------ Creedmoor (Cr B, CrB2, CrC, CrC2, CrE, CtB, C` -C)__ Durham (Du B, Du B2, DuC, DuC2)--------------- I Enon (En B, En B2, EnC, EnC2, En D2)--------...----!. Faeoville (Fa B, Fa B2, Fa C2)____________________ Georgeville (GeB, GeB2, GeC, GeC2, GeD2)- Goldsboro (Go)-_--__ --_-- Granvillo (GrB, GrB2, GrC. GrC2, GrD)---- ------ Toatnoto nt end o" tr.b'm_ L cr4 5-15- 5-15 55 15 o -15T' 4-15+1 10-1' J�1JT� 0-15-� I I 4-15+I 5-15T Feet, ! Inches 2 ! 0-1.3 Pine ttWldy 10,1111--- _ 5-107-I (1 13-42 (Any lo na__ --------- ` 42-48 �. oars sandy lon 111- 1U4-1 0-11 Sandy lo;nn or gnivelly Sandy loam j 11-44 CLIA' loam -------------------------- - -- ---------- -44-50 44-50 Handy elnyloam---_____ _.--------- __-----_0-13 0- 13 Fille tiandy 101311___ _____ ..._.- U-50 Fi1eSalulyloam-__--_____ -------- 0 0--1 �an(ly ]Darn----- _.-__ ----- ---- 3G-42 San(1----------- ---. - --- ---- ---- I 0-10 1'oamysand----- 2/zi, --- -------- 10-40 Sed ------------------------------- 30 r'� (1 6 Sandy ]Dain or gr �velIy s:.lndy loa,rtl_ ..---- fi-:)9 Clay to clay loan) ----------------- _------- --.___59-72 50-72 Lcmill________________ _.____----i 1®- 0-6 ClaylO;IIII-.__- __ ______� ---- --- ---- I. G-40 C11Iy- .. - - - - 41)-45 Loam- -. _. 1t21 0-6 Milo ,midy loam___-- ------....----,--- - - _ j 6-48 Sandy loam to silt loam 0--111 Sandy loam --------------------- ..-_ ---� 19-36 Saildy clay" lo24II1_---------------------- --- 36-45 Sruldy loam---- -----------------...., -, 21 �. 0-32 Finc snndy Ionm__ 32-4`2 Silt. loth to lo,! -my: sand ----------------- 0-12 Sandy lonin ---- - 12-29 Sandy elay loam to clay loam-_-_- - -- �- 29-58 Chiy.------------------- _ --- 58-96 __ 1 C1sy to sandy chly-- ----_-_-- lOTj 0-18 Locimy- Saud -- ----_ _ ---.. --- 1 18-60 handy clay loam to clay loam --- 0-8 Fine r,nijdy lonin_ .. 8-32 Clay------------------ -------- - --- _3) 38 32-38 Clay loam -.-_ 10-L: 0-14 ! SmAy loam------- _ - - ---------- 14-65 1 Clay local ----- - - ----- 65-72 Sandyloam-----..._ _._..-------.. 10 0-3 Silt loam.. 5-50 oaSLT C"l,ay t0 e 1ty clayloam- Silt Siltlo1111-------- 7i<,� 0-t5 Sandy I.oaan...__ -.. ---- ..--, j 15 61 9ilncl} clny-loln -- -- 6 --- 10-1 0-12 han(tyloan] - 12-41 C-ltly loans_ 41-50 Clay_ WAKE COUNTY) @TC3it'1,%i CAROLINA voperties of the soils A ullied land (Gu), Blade Iznd (Ma), and Swamp (Sw) are omitted froin this table because their properties are highly variable] .....-----.-- Clas,sification--Coiat�inued j Percentage pztiasing dere Availuble ! Shrink swell 91 No. 200 PerrucabiHty ' ater Reaction pot(mtiDal Unified i AASHO � (0.074 min.) opacity � _._............_....._..._........__--._..-..-..... Inches per i.ibcfe. of ! Inch s Per hold 306' )It SJI, AIL A 4 40-55 2, 0-6, '3 0. 12 I o.6 6. 0 Low. CIL A 6 i 70-h0 ! 0.03-2.0 13 a 6-6. 0 Moderate. S AI d A, A-4 ( 30-40 0. 63-2- 0 11 5-1-5.5 Moderate. 51VI, Gl•I A-•2, A--1, A--4 10-40 63 3 .05 5. 1 ,::. `) Low. MH, CL A--6 50-55 0. 6.3-2. 0 .13 5.1-6.0 'i Moderate. SC, CL, 'MR 11-2 A-4, A 6, A-7 40-65 0.63-2.0 .13 .5.6-6,0 V'Iodesate. SAI, INIL € A 4, A-2 --fi0 '��6.3 � .12 5 l 5. :5 Low. SCS, CL A 2, A-6 20-55 0.2-0. 63 L3 4.5-5.0 Modc ate. 5M A 4 A-2 I 20 50 i 0. 'L-0. 63 ! 13 ! ' 5. 6-6, 0 Moderate. SM A-2, A--4 25-45 2 0-6.3 .16 5.6-6.0 Lou-. 5P, 7Y -SIM it 1, A-3 0-12> 6.:3 .05 5. 6-6. 0 ( Loin. SNI A-2, A-4 10--3:) :>6.:3 07 5. 1.-5. :i Low. SP A-1, A--3 0-5 1 6.3 .05 ! 5. 1-5.5 Low. I\ 1, (.ACJA-2 2.,D 35 0.63-6.3 j 1.3 i ).1'e).+, Lou. CL, l'11-1 A-67 A-7 60-00 0. 6:1-2. 0 . 14 a. 1-6. 0 Moderate. _IIL, Ch j A-4, A -ti 50-1s0 0. 63 2. 0 .14 5. 1-5. 5 Moderate. CL i A-6 55-S5 0 63-2. 0 .13 5 1-5. 5 Loin. CL, MI -T A-6, A-7 60-410 0 6, 22 0 .11 5 1-05 5 A'loden to- ML, CL A-4, A-6 ( 50 -SO 0.63-2.0 01.4 w 5. 1-5. 5 -Moclorate. ML, S -M A-4: 40-55 0. 63-2. 0 C .15 ' 5. 1-5.5 Loin. 5111, ML A-2, A-4 30-100 0.63-2.0 .15 5.1-5.5 ', Moderate to low. S M A 2, A-4 30-40 2.0-6,3 11 5 1 ). 5 Loi . SC, CL A 6, A-4, A-2 25 55 O. `2-0. 63 .12 ; 5 1-5.5 _Mode> -rate. S\i A-2, A-4 i 30 40 0.2-0.63 j .12 5 1 5. 5 Moderate. S\I A-2 3 25-35 0.63-2.0 .15 5 1 5.5 Loin. ML, StII A-4, A-2 J-5-90 i 0. 631-2. 0 E € .15 5. 1 5, 5 Moderate to low, SM A-2, A-4 30-45 2,0-6,3 i 11 5. 1-5. 5 Lora. SC, CL, CH A-6, A-7 35-85 0,63-2.0 .14 j 4.5-5. 0 Moderate. CI:I, mtf i A-7 10-95 I !0. 2 14 4.55-5 0 '. High. CII, CL, SC �1-7 :35 430 "0. " M 4. t, Di. 0 Moderrtte. SAI A-2 10 -35 > 6. 3 12 5. 6-6. 0 ! Low. SC, CL A-6 35-30 0.63-2.0 13 5 1-5. 5 Moder€ate. 4.\I A-2, A-4 30-40 0. 63-2. 0 13 5. 1-5.5 Moderate to loan. ti_11, ,iIL I A-4 40-60 2. 0-6. , .12 I 5.0-6. 0 Lou-. MII, ("If A-7 70-90 <"0. o .14 6. 1-6. 5 High. CI, f A-6 i55 - X5 0. 2 . 14 6. 1-6. 5 Moderate. SM, SC A-2 25-35 2.0-6.3 ! 12 5. 6-6 0 j Low. CL A-6 55-85 0.63-2. 0 165. '1.-5. 5 Moderate. SC, y14I A-2, A:-4 30-40 0. 63-2. 0 16 5. 1-5. 5 Zloden te. \IL j A-4, 65--55 2.0-6.3 13 .5. 6-6.0 Low. lti1 A-6, r1-7 80-90 0. 6,33-2. 0 16 5. 1-6.0 -Moderate. ML A.-4 65-85 0.63-2.0 11 j 5. 1-5. 5 Alo&rate. STI A '2, A-4 30-40 2. 0-6. 3 10 l 6. 16. 6 Loin. SC, 5141, CL A-2, A-6 20-55 0. 63-2. 0 15 j 5. 1-5, 5 S dIA-41 I A-2 2,5-45 0. 6:3-'2. 0 15 5 1-5.5 Lou-. SM A-2, A-4 30-40 I j•6.3 12 5. 6-6.0 i� Low. CL A-6, A-7 55-35 ! 0. 63-2. 0 13 5. 1-5.5 Moderate. CL A-7 70-90 0.63--2.0 13 5. 1-5.5 Moderate. 0 Soil series and meal) symbol Helena (HeB; HeB2, HeC, HeC2, HeD)_______ --.. i Herndon (HrB, Hr B2, HrC, HrU, M)2- Hrf)-........_. Lloyd (LdB2, LdC2, LdD2)---_---_------__-_-_-- Louisbnrg (L.oB, I..oC; Lo D, Lw B, Lw B2, LwC, LwC2). (For properties of Wedowee :,oils in Lw B, L.w B2, LwC, and L_wC2, refer to the Wedowee Series,) Lynchburg (Ly) ---------------------------------- Aladison (MdB2, MdC2, MdD2, MdE2).._..-- ---- Mantnehie (Me)-------------------------..__-_----- Mayodr;-11: (MfB, MfB2, MfC, MfC2, MFD2, MFF, MSB, M gB2, M gC, M aC2.) (MyB, MyB2, MyC, MyC2, Norfolk (NoA, NoB, No_32, NoC,_-- Orangeburg (OrB, OrB2, Pinkston (PkC, PkF-)..--_------_--__.---__.._- __- - Plummer (Ps)-- - ----------------- Rains (Ra)---.__—.. - --- - - - - Roanoke (Ro) ---------------------------------- Troap (TAD,pped only in a complex with W agrant soils) . Footnote eft end of table. SOIL SURVEY Depth to bedrock d'e:et 4-15 2-4. 20 -F 5-15 + X15+ 4-15+ 20-r I 20 2-3 i 20 201 i 5-1.5 _}.. i i 20 j TAB L'E 5.- ----- Estim atcd propertar-s Depth to Depth. Classification seasonally from -----__ ---------.__..___' high surface. wate'r (typical 1 Dominant USDA texturra table profile) t i S'e'ri ( FeDciu+.g (Y) i 0--8 60-72 8-36 0-8 36- 318 8-65 0--6 6,1 -72 6-40 0 11 40--45 i J 0'-I- i 0--9 38--45 9- 38 j 38-50 10 + 0-8 83- 88 8--12 12-36 1? z'; 0-13 13-66 65-7 10 0-(b 6-32 32-48 2 IS 0-45 10 104- 10 0+10 -T 10 1 10+ 0 i €1 f i (� I Sandy cl<Ly...__._..________ SE,.ndy Clay loam-_....._.__ -- _-_... ........... ... "lilt lo. Silty Coarse sandy loam_ Sajidy loam Sandy Olay loam to sandy loam_--------__.. ' Clay Sandy Silt Sanely 0-7 Sandy loam or gravelly sandy login.._ 7-40 C"Iny to clay 40-48 sandy lon.m._ 0-9 Silt loatm___ __--_.-----.--. ___--_-- 9-24 Silti clay loam__--_---- --- 24-30 Silt loam.- 0 ­15 Loamy ,and _,_-------------_-__.---.- 15165 sandy clay loam__..._ -- 65-72 Sandyloam 0-12 Lonmy :,and_ _.... _....... - - 12--66 szaxxdy clay loam to sandg= 10,1na._ _.... 66-72 Loaxnysand ... ... ...... -------- 0-25 Gandy loaxxx_._------------- --- 25 -36 1 Gra.vally sanely - 36 Hard tock. 50--60 srLYidy loa,Yn____ -- 60-72 Loamy saIxd__ 0-8 Finesand}r loam_________-___----.-_--- 8-65 Stindy clay loam_._.__._,_.._.__..._.. - 6,1 -72 Loamy sand -------------.___..,_-_.-------._ 0 11 Fine sandy loam__._,__-----_- 11-38 Clay t,o sandy Clay loatrrx _..._ ._..._,_---------'', 38--45 Sandylaam......._...____--__-________.__._.....__', 0...49 5a xirl 49-83 Sandy loam to sandy clay loam. 83- 88 Loamy saand._ €rf (Ar sails --Continued Classifaeation -Continued Unified A.AS11(3 `AI AI11, CL, SC CL, SC ;OIL CL, AIII CL AIL CL, AIII Ii11-1 SM sm, sc SAI SAI C11, 1., SAI AIH, CII AIL SAI S !I, (4 1-4T AM, CL 5AI AIL ML, CL _AIL SAI C" SM, CL SAT, SC SDI s (' SAT SC, 'sAl r_aAI SP, SAI-sp SII S A'f SAT, All, SC, CL S AI SII, AIL A1II, CL, SC SC, SAI SP, sw-SM SAI, CL SAT A-2, A-4 A-7 A-6, A-2 A-4 A-6, A-7 A-7 A-4 A-7 A-7 A-2 A--1 A -I A-2, A-4 A-6, A-2 t-7 A-2, A-4 A-7 A-4 A-2, A-4 A--2 A-7 -4 4 A-6 -4 j A-2 A-..4 ' A-6, A 4, A-2 A 2, A -A; A- 2 A-6, A 4, A--2 A 2 A-2, AA. A-'2 A-3, A-2 A-2, A.._4 A-1, A-2 A-2, A.--4, A 6 A-2 A-2, A -4 A --7,A-6 A-4, A-2 A-3 A-2 A-2, A-6 A-2 WAKE COUNTY) 14OR.TH CAROLINA Percentage hawing sieve Available I Shrink -swell No, 200 Parnectbility '', water Reaction potentinl (0.074 inm.) eaapneity Inches per inch of! 30-40 Inches per lour 2. 0-6. 3! - soil 0.11 j 7�Fi 5. 6-6. 0 i Low. 45-60 <0. 2 .14 4. 5-5. 5 ( Nigh. 20-55 R 2-0 63 14 7 1 ). 5 High. 65-90 2.0-6.3 i .13 5. 1 5. 5 Low. 85-95 0.63--2.0 Lf's !5. 15. 5 Alodcaraatc�. 80--90 0. 63--2. 0 14 5. (3-6. 0 Moderate. 50-80 2. 0-6.3 13 _ �5.6---6.0 Low. 55-90 0, 63-2. 0 13 15.6-6.0 Moderate. 80-90 0.63-2.0 13 i 55.6-6.0 Moderate, 10-35 A. 3 '08 5. 1--5. 5 'i Lown. 1.0--25 2. 0-6 3 10 5. 1-5. 5 ! Low. 10-35 2. 0-6. 3 10 j .i. 1-5. '-) Low, 30-40 25-60 70-90 25--40 55-85 70-90 30--40 12--35 70-90 30-40 65-90 80-90 € 5-90 30-40 20--55 30-40 10-35 2.:r)-55 10-35 30-40 1.0-3.a 0--15 30-40 15-'3() 40-55 30-55 15-30 25-60 45-95 30-40 0-15 30-55 I5-30 2.0-6.3 0. 63-2. 0 R 63-2. 0 >6. 3 0.63-2.0 0.63-2.0 2.0-6.3 6. 3 0. 63-2. 0 0. 63-2.0 2.0-6,3 0.63-2.0 O. 63-2. 0 2.0-6. 3 0632.0 0. 63-2. 0 2 0-6. 3 0. 63-2. 0 0.63-2 0 2.0-6. 3 2. 0-6. 3 • 6. 3 2. 0-6.3 6, 3 I 0. 63-2. 0 0.63-2. 0 0. 63-2. 0 0. 63-.2,0 <0. 2 1 <0. 2 (i. 3 0.63-2, 0 2. 0-6.3 12 14 95 11 I 13 11 i 09 12 13 13 1.3 13 13 08 15 08 i 15 ' 12 i 1 ri 08 05 12 0s 12 t 14 12 I 13 13 13 05 14 1 �) 5.6-6.0 5. 1 -,Ci. 5 5. 1-5.5 5, 1-5. r4 G. 1-6. 5 5. 1-5. 5 15. 1-3. 5 5. 6-6. 0 5, 1--5. 5 J. 1--5. 5 5. 1 7. 5 D 1 1. 5 i1. 6-6. 0 5. 6-6i 0 Vii. 1-5. 5 5. 6-6. 0 4. 3-5. 0 15. 6-6. 0 5- 1-5. 5 i 5.6-6,0 4. 5-5. 5 1. 5-5, 0 6. 1.--6. 5 6. 1--6. 5 B. 1-6 ' -6. 5 5. 1 5. 5 5. 6-6. 0 93 .row. Low-. Moderate. Low. Moderate. Lown. Low. Low. Moderate. Low. Low. Moderate. Moderate. Low. Low-. Low. Lo -x. Lowy. Low. Low, Low". Low. Low. Low. Lola% Low. Low. Lowy. High to raoderate. Low. Loss-. Low. Low. a SOIL SURVEY Depth to "oil series and rials symbol bedrocle Fcct Vance (VaB, VaB2, VaC2)------------- ---- ----- 4-10+ Wngrnm (WaA, WaS, WaC, W., -A)---------------- 20 r (For properties of the Troup soil in WYA, refer to the Troup cries.) lVahce(Wh) ----- --------------------- -----.,__-.._.____ 13r.t:kn(WkC, WkE).---_.____.-------.------_____;"20inches Wodon'ee (WmB, WmB2, WmC, WmC2, W:mD2, 4 6+1 WmE). Weha.dke(,. Mr), Wo) ---------- --------- ---------I 3-15+ (For propertins of the. Bibb soil in Wo, refer to the Bibb aeries.) White Store: (WsB, Ws82, WsC, WsC2, WsE, WtS)- - ---_� 4-8 - (WvD3)----- ----- lVilkes: (WwC, WwE, WwF)------------------------I 2-9:+ (WXE)------------------------------------------------- Wo_'sharn (WY) ------------------ - -----I 5-15)+ TABLE 5.—Es i� nai€ cd X77'0P01 ie3 Depth to I opt.h Classificatiou easmrrllt trorrn high Slndy' cloy lonriz--------------- T4'aT.t'.I' 1 (typical Dominant I SDA texture. I. table=, profile) 0-14 Fret 1!achr.c I 10 0 fi 5-uncly loalli - --- _ _ .. _ Fine s,:tndy clay lo;uyi-------- ------ - - - - -. --' 1 4-� 0-15 CIrave11,y loviny 'Rand ------------ 15 10 0-25 Loaury will or liana_ -._----.----_--- 25-65 Slndy' cloy lonriz--------------- 65-100 Clay'... ------------------------ --- -------._.2 .2 0-14 bine sandy lounl, sandy clay loam_- -- -- 14-3(i Clay................. ............... 36--45 Fine s,:tndy clay lo;uyi-------- ------ - - - - -. --' 1 4-� 0-15 CIrave11,y loviny 'Rand ------------ 15 Cla,r(l Pock. I 10+ 0-7 ' 5andv loi.em----- i 7-21 Clay•I0 111 to Sandy ehly loaln---_---. -----� 1 24-40 Saaul-y lo.:trrt------------- --- ----- -- -- 1) 0- 6 Silt loaan - - ---- - - 6-30 Fine sandy clay loam --------- ----------..3` 30-40 Sandvloaan---------- .----------------------- _ -------------0-6 0-6 handy- loam----- - -- - ---- _ ... -'I ti -31 Clay--- - --------- _ ----� 31-35 Sandy clay to clay loath_ -- ---- ----- ---- 0--5 0-5) _ Clay lontn ------------ .5 - 2 71 s-27 C1 -------------------------------- -- --27-38 27-38 Smidy clay to clay lo.Lru --- _- -_ _-- (`) 0-8 Sandy loam ----- --_- ----- - .._ 's -1t) 1 Clay t0 d4Ly- 10an1____._______ ----- € 19-38 Silt loam --------------- - - -- j 38 Ilard rock. 10 0-8 Stollysandyloam------------------ --I 8-15 C1 tv to c1:Lv bairn__ 15-24 Silt`loam-,------- ------------------- i 24 !lard rock. 0 0-11. 521.nciv loam ------------------- .---- _._1t-38 11-:38 Sandy clay loam. -___---------______-__-4' 38-45 1 h;Lndy 10€rrn__--.--------------.--- Has perched water table for short. periods because subsoil is very slowly permeable. Some, engineers prefer to use the Unified Soil Classi- fication System (17). In this system, soil materials are identified as coarse grained (eight classes) , fine grained (six classes), or highly organic. Tlie classification of a soil by either the ASITO or the Unified system identifies the soil material with re- gard to gradation and plasticity. The classification per- rnits the. engineer to appraise the soil quickly by compar- ing it with other soils that have the same classification. Soil test data Samples of nine profiles, representing six soil series, were tested bar the North Carolina Staa,te Highway Com- mission so th,,t the soils could be evaluated .for engineer- ing purposes. The test datat, are given in table 4, and the.)- indicate the characteristics of the soil at the speci- fied location. The physical characteristics of each soil at other locations may vary somewhat from those of the soil sampled. All samples were obtained at a. depth of less than tQ feet,. The data, therefore, probably are not ade(piate, for estimating' the characteristics of soil i a.- terials in strongly sloping or steep areas, where. reefs cuts are required. The engineering classifications in table 4 are based on data obtained by mechanical analyses and by tests made to determine liquid limit and plastic limit. Mee.l-ta,alical analyses were made by combined sieve and lYydro- rneter methods. The tests to determine. plastic li.lnit and liquid limit measure the effect of water on the consistence of the soil material. As the moisture content of a clayey soil increases from a very dry state, the material (;Manges from a semisolid to a. plastic state. 4s the moista re con- tent is further increased, the material changes from. a WAKE COUNTY, NORTH CAROLINA of the soils -Continued 95 Classification -Continued Percentage passing sieve No. 200 Permeability Available water Reaction Shrink -swell potential Unified AASHO (0.074 mm.) capacity Inches per inch of SM A-2, A-4 30-40 Inches 2.p0 hour soit0. 11 5 6-6.0 Low. CH, CL A-7 70-90 <0. 2 . 13 5. 1-5.5 Moderate. ML, CH A-6, A-7 55-85 <0. 2 .13 5. 1-5.5 Moderate. SM, SP, SP -SM A-2, A-3 0-35 >6. 3 .08 5.6-6. 0 Low. CL, SC A-6, A-4, A-2 20-55 0.63-2.0 .15 4.5-6.0 Low. CL A-7 70-90 0.63-2.0 .12 4.5-5.0 High. ML, SM A-4, A-2 25-60 0.63-2.0 .12 6. 1-6.5 Low. MH, CL A-7, A-6 70-90 <0. 2 13 5. 1-5.5 High to moderate. SC, CL A-6, A-2 30-60 0. 2-0. 63 13 5.6-6.0 High to moderate. GP -GM, SM A-2 5-35 >6. 3 .07 5. 1-5.5 Low. SM A-2, A-4 30-40 >6.3 . 08 5.6-6.0 Low. SC, CL, MH A-6, A-7 35-65 0.63-2. 0 .13 5. 1-5. 5 Moderate. SM, SC, CL A-2, A-4 25-55 0.63-2.0 . 13 5.1-5.5 Moderate. ML A-4, A-6 65-90 2. 0-6. 3 .15 5.1-5.5 Low. CL, SC A-4, A-6, A-2 20-55 0.63-2.0 .15 5.1-5,5 Low, SM A-2, A-4 30-40 2. 0-6. 3 13 5. 1-5. 5 Low. SM A-2, A-4 30-40 0. 63-2. 0 15 5. 1-5. 5 Low. CH, MH A-7 70-90 <0. 2 '16 5. 1-5. 5 High. CL, CH, SC A-6, A-7 35-65 <0. 2 16 4. 5-5. 0 High, CL A-6 55-85 0.63-2.0 .15 5.6-6.0 Low. CH A-7 70-90 <0.2 .16 5.1-5.5 High, MH, CH, SC A-4, A-7 35-65 <0. 2 .16 4.5-5.0 High. SM A-2, A-4 30-40 >6.3 .12 6. 1-6. 5 Low. CL, MH A-7 55-90 0.63-2.0 .15 6.1-6.5 Moderate. ML, MH A-7, A-6 70-90 0.63-2. 0 .15 6.1-6.5 Moderate. SM, GM A-2 12-35 >6.3 .12 6.1-6.5 Low. CL, MH A-7 55-90 0.63-2. 0 .15 6. 1-6. 5 Moderate. ML, CL A-4, A-6 70-90 -------------- ------------ 6.1-6.5 SM A-2, A-4 30-40 0.63-2. 0 .13 5.1-5.5 Low, SC, CL A-6, A-2 35-55 0. 2-0. 63 .16 5. 1-5. 5 Moderate. SM A-2, A-4 30-40 0. 2-0.63 .16 5. 1-5. 5 plastic to a liquid state. The plastic limit is the moisture content at which the soil material passes from a semi- solid to a plastic state. The liquid limit is the moisture content at which the material passes from a plastic to a liquid state. The plasticity index is the numerical differ- ence between the liquid limit and the plastic limit. It indicates the range of moisture content within which a soil material is in a plastic condition. Engineering properties of the soils Table 5 gives some of the significant soil characteris- tics of the soils of the county. It also gives the engineer- ing classification of the principal horizons of typical profiles. The depth to a seasonally high water table is based on field observations. The soil material in the main horizons is classified according to textural terms used by the U.S. Department 835-403--r0--7 of Agriculture. Except for the soils listed in table 4, for which engineering test data are available, the classi- fications shown for the Unified and AASHO systems are estimates based on the USDA classification of texture and on the description of the soils. The estimates of permeability are for uncompacted soil material. They are based on field observations and limited laboratory data. Available water capacity refers to the water in the soil that is available to plants. It is the amount of water held in the soil between field capacity and the perma- nent wilting point; that is, between one-third atmosphere and 15 atmospheres of tension. The amounts are based on laboratory tests of a limited number of soils. For soils not tested, estimates are based on the results of testing similar soils. 96 SOIL Si1RVEY TABLE 6.—Engineering [Dashed lines indicate that information is not available, or that the practice is not a-pplicable. Miscellaneous land types Ctillied land Suitability as source of -- Soil series and map symbols I Topsoil Road fill Homebid1ding sites Altavista (AfA)_---__..___.-.----..._.__! Fair_ ...._... l Appling: (AgB, AgB2)-------------------- I Fair-__ (A air----- (A C, AaC2)._____._.._ (ApB, ApB2, As B, AsB2)------- ._ Fair-__ I Fair-_---_ (ApC, ApC2, ASC, AsC2)._..__--- Fair_-____. (App)-------- ------- ------ Augustan (A u) Bibb (TMapped only in tin undiffer- entiated unit with Wehadkee soils) . Buncombe (Bu) ------- .-_-------- Cecil: (Ce,B, CeB21)-------- - -._... (CeC, CeC2)---- -------------. (Ced)_.__.-___..___________._..__ (Ce F)_.____,.---------------._- (CgB, CgB2, CgC, (CIB3, CIC"s)._.__ ___...------- - Fair--- W _ _ Fair_..._.. --1 Severe: flooding-....._.,.-. Fair _-_ _ Fahr- .... _ .. . Fair___ Poor____. J! Poor-__..- Poor_____il Fair- air_Poor- Fair_ . I __, Farr_ ..... _. Poor- _. ! Good- ood_ i Fair____.. Fair Fair___..__ Fair__� i Fair_._- Fair_ Fair...... -. .. Fair - Fair j Fair_ . I __, Farr_ ..... _. _ Poor- ___-� Fair-___-- Poor__.-__) Fair__. Degree of limitation€or- -- Septic tank absorption fields Severe: flooding_.._ __... Recreation C;`ampsites 2Moderalte: flooding- fair fooiling;fair trafFicabillty. _� _Moderate: coarse _Moderate: medium j Moderate: coarse fragments. percolation rate. I fragments.I Moderate: coarse' _Moderate: medium � "Moderate: cas aa""e i fragments. percolation rate. fragments; slope s of 6 to 10 peaccnt. i _ Slight --------- -� Moderate: inediurn --- I Slight; -----_-_,---.,,.._.! percolation rite. i Slight.. _'IOCiP•rate: medium � _'loderatcs: 91OpeE percolation rate. of 6 to 10 percent. i 14Modcrate: slopes y _Ioderate: lnednam Swore: slopes greater tha ii i pereoltation rate; greater than i 10 percent. i slopes greater 10 percent. than 10 percent. Severe: flooding; Severe: flooding Severe: flooding; high water table. C high water table. high water t a,blc. Severe: flooding; Severe: flooding; Severe: flooding; high water table. high water table. high water table; I poor trafhcatil)llhy. Severe: flooding ------ I Severe: flooding Severe. flooding-__ i Slight ---------- -- - Moderate: medium j Slight___..__-- -------... i percoltation rate, j f Slight ------ __ ___ 'NModerate: meds. im i _Moderate: slopes of percolation rate. 6 to 10 percent. i I _Moderate: slopes of i _Moderate: medium LNcvere: slopes 10 to 15 perceut, 1 percolation rate; greater than slopes of 10 to 15 10 pereent. percent. _Moderate to severe: i Severe: slopes � Severe: slopes slopes of 15 to 45 greater than la" f greater than 15 percent. percent. 1 perepercent. k i _Moderate: coarse _Moderate: rneditun INToderate: coarse fragments. ! percolation rate. fmg' merits. p� € f Moderate: chayey ' _Moderate: medium _moderate: clayey srxrface layer. percolation rate. surface layer. Moderate: clayey _ oderate to severe:Severe: slopes surface lsa.yer; slopes i medium percobi.tion greater than 10 of 10 to 20 percent. i rate; slopes of 10 to percent, 20 percent. WAKE COUNTY, NORTH CAII,OLLNA Ml interpretations (G u), AL-ide land (Ma), a.nd Swamp (S v,,) are omitted from this table, because their features are too variable for interpretations] Degree of limitation for Continued Recreation ---Continue d Picnic areas ltloderate: fair traflicability; flooding. Moderate: coarse fragments. Moderate: coarse fragments. Slight.------------ Slight------------- Moderate: slopes greater than 10 percent. Severe; flooding; high water table. Severe: flooding; high water table; poor traffic_ ability. Severe: Slight- ------------- I Slightt--------------- tiloderate: slopes of 10 to 15 percent. Moderate to severe slopes of 15 to 45 percent. .1lodeiate: coarse fragments. Moderate: clayey surface Layer. Moderate: clayey f surface layer. Intensive play areas Adoderate� fair traffica,bility; flooding. Moderate: coarse fragments. Moderate: coarse fragments; slopes of 6 to iii percent. Slight---------- Moderate: slopes slopes of 6 to 10 pereent. Severe: slopes g,•eatc-,,r than 10 percent. Severe: flooding; high water table. Severe: flooding; high water table; poor tra;ffic- abYlity. Severe: flooding; poor trafic- ;ability. Slight ---------------- Moderate: slopes of 6 to 10 percent.. Severe: slopes greater than 10 percent. Severe: slopes greater than fly percent:. Moderate: coarse fragments. Severe: Clayey surface layer. Severe: clayey surface layer. Soil features affecting- - I Faria ponds Highway location Reservoir area Compacted embalnkmertt Seasonal high water table; flooding. Frost -susceptible material. Frost• -susceptible., m.ateri.sl. Frost -susceptible: material. Frost -susceptible material. Frost -susceptible material. High water table; flooding unstable ditch slopes. High water table; flooding; unstable ditch slopes. Flooding; unstable ditch slopes. Frost-su eeptible mal aerial. Frost -susceptible material. Frost-suseeptible niateriaal. Frost -susceptible material. Frost susceptible niaterial. Frost-suseeptible Dia terial. Frost -susceptible material. Moderate permeability. Moderate permeability. '.Moderate permeability. Moderate permeability. Moderate permeability. Moderate permeability. Moderate permeability. Moderately rapid permeability. Rapid per- meability. Moderate per- meability. Moderate per- meability. Moderate per - Moderate per- meability. Moderate per- rneabilii,y. Moderate perme- ability. ldloderate pernze- ability. Moderately low strength eal:d stability; impervious. Moderate strength and stability; nearly impervious or impervious. .Moderate strength .and stability; nearly impervious or impervious. Moderate strength :.and stability; nearly impervious or impervious. Moderate strength i and stability; nearly impervious or impervious. Moderate strength sand stability; nearly impervious. or impervious. j Moderate strength ;and staability; impervious. Moderate strength i and stability; � seauipervious. Moderate strength and stability; j pervious, tiloderate to low strength and stability; nearly impervious. Moderate to Iota strength :and stability; nearly iznpervious. Moderate to low s't,rength and Stability; neaarly= impervious. Moderate to low i strength and stability; nearly I impervious. i Moderate to low strength and staabllity; nearly impervious. E Moderate to low strength and sta:bil- itay; nearly irraper- vious. Moderate to low strength and stabil- j ity; neaa Iy imper- vio9Sa. Sprinkler irrigation Medium available water capacity. Medium available, water capacity. illedium available water capacity. Medium available water capacity. illedium available. water Capacity. Medium aavaliaable water capacity. Medium available water capacity. Lost to medium available water capacity. Low available water capacity. Aiedium available water capacity. Medium available water capacity. Ke ditun available water capaicity. Medium available 'water c.ip,'wity. Medium available. water Cap"-wity. Medium available water- cap atity. Aledium. available water capacitj�: SOIL SURVEY TABLE 6.—Eng2neermg Soil series aIld map symbols Suitability sOL2rce as Of— Degree of limitation for— f 1teemation Septile tank Topsoil Road fill Homebuilding sites absorption &olds Severe. flooding; I I Severe: flooding; Campsite", Severe: flooding; I Chewacla (Cm)_.__ - __ _ _ Fair _ __ Fair---- Mgh water table. high water table. high water tial>I; . Colfax (C n)._..____________.__...._--_, Fair____._. Fair ----- Severe: high water Severe: high water Severe: high water table. gable. table. Congaree (CO, Good- Fair- Severe: flooding-- Severe- flo oding.. Severe: floodin g----- -i Cree (CrB, CrB., Ct3) __ __________Fair- E Poor__ I Severe: shrink -swell Severe: slow per- Moderate: fair , potential. solation mate. trafficability. (CrC, CrC2, CtC)------------- Fea,ir___.__ Poor__..___ Severe: shrink -swell Severe: slow per- Moderate: slopes of potential. colatlon rate. 6 to 10�ercent:; fair traflicability. (CrE)----------------------- i Fair Poor Poor_____ Severe: shrink -swell Severe: slow per- I ; Severe: slopes potential. solation rate. I greater than 10 i percent. D urbarn : (DUB, DuB2)------------------ Fair -`__..1 Fair ------ Slight ------------- Moderate.: Inedium Slight.-----_______ -I' percolation rate. i (DuC, DuC2)----------------- Fair_____ Fair--___ Slight ----------------- Nfoderate: medium Moderate: slopes of percolation rate. 6 to 10 pereent. Fnon: (EnB, EnB2)_________________ Fair_..___ Poor_....__ Severe: shrink -swell Severe: slow Moderate: fair potential. j percolation ratite. trafficability. I i ( EnG EnC2)_..._-- _ Fair_- �OOr_____ Severe: shrink -swell € Severe: slow I Aloderatite: slope" potential. percolation rate. of 6 to 10 percent; I ff fair tralFicability. (En D2)__-___-_____._______- Fair_____ Poor ----- Severe: shrink swell Severe: slow Severe: slopes I potential. percolation rate. greater than 10 percent,. l aceville: (Fa R, FaB2).._..--______._---__i Faair---.__i i FEEII'_.. __- I Slight ------------------ ln l-loderato: 2nediulight------------_.--- derato:percolation rate. ~ (Fa C2)___..______.._._._.__-___ Fa2r....._.. Poor_ Slight____'--___._.._____, Ni.oderate: medium Moderate: slopes percolation rate. i of 6 to 10 percent. Cleor eviller GeB, GeB2)-------------...__; Fair_.._._,_ Fair_----._ _ _ _ _ _ _. _ Slight_.___ I Moderate: medium Slight.._--------------' I percolation rate. (GeC, GeC2)-_-----...._ _-__._,__` Fair_____ - Slight.__ _____ --.__- Moderate: medium I Moderate: slopes percolation rate. I of 6 to 10 percexlt. (GeD2)_ Fair-,__1 Fair-_...-_ Moderate: slopes Moderate: slopes Severe: slopes [ i greater than greater than { greater than P 10 percent. 10 percent- 2nedlum f 10 percent. I { percolation rate. Goldsboro (Go)------------------- CCood-_.._ Good_--_ I Slight ------------------- Moderate: seasonally Slight .-_____---_------ high water table. WAKE COUNTY, NORTH CAROLINA interpretations— Clontinuod Degree of limitation for—continued Soil features affeeting— i litecreation--("-ontinued Farm ponds Sprinkler. Highway location irrigation j14gervoir area Compactedj[ I'1Cn1C areas Intensive lVe play areas einbtlnkment Severe: flooding; high water table Severe: high water table. Moderate: flooding_ Moderate: fair trafficability. Moderate: fair traffiability. Moderate: slopes of 10 to 20 per- cent; fair traffic - ability. Slight _.-_-_-------- 1Moderate: fair trafficability. 1\loderate: fair trafficability. Moderate: slopes of 10 to 15 percent; fair trafficability. "light ..__-_.___.______ Slight__.-----_----- Slight-------------- Slight-------------- Moderate: slopes greater than 10 percent. Slight- ----___-_...--- 'I Severe: flooding; high water table. Severe: high water table. Severe: flooding ---- Moderate: fair trafficability. Moderate: slopes of 6 to 10 per- cent; fair traffic - ability, Severe: slopes greater than 10 percent. Slight- ___._____..._.___ Moderate: slopes of 6 to 10 per- cent. Moderate: fair trafficability. i ?Moderate: slopes of 6 to 10 percent; fair trafficability. Severe: slopes greater than 10 percent. "light --------------- I Moderate: slopes of 6 to 10 percent. Slight__ Moderate: slopes of 6 to 10 percent. tievore: Slopes Ili greater than 10 percent. f i slight' ------------- Flooding; high water table; unstable ditch slopes. High water table; seepage.; unstable ditch slopes. Flooding; unstable ditch slopes. Highly plastic __-__._.. Highly plastic-------- Highly ____.__Highly* None ____.____-_____ Highly plastic, tnaaterial. Highly plastic material: Highly plastic material. None --------------I Unstable cut slopes; frost- -susceptible, material. Unstable cut slopes; frost - susceptible material. Unstable cut slopes, frost - susceptible material. Seasonally high water table. Moderate perme- ability. Moderately slow permeability. Moderate perme- ability. Slow permeability.._, Slow permeability. I Slow permeability.. Moderate perme- ability. Moderate perme- ability. Slow permea- bility. Slow permea- bility. Slow permea- bility. Aloderate permea- bility. Moderate permea- bility. Moderate permea- bility, Moderate permea- bility. Moderate permea- billt.y. illoderate permwi- 11 bility. Moderately low strength and stabil- ity; nearly imper- vious. Moderate to low strength and stabil- ity; nearly imper- vious. Moderately low strength and stabil- ity; se.:mipervious. Loin strength and stability,- imper- vious. Low strength and stability; imper- vious. Loge strength and stability; imper- vious. Moderate strength and stabllity; nearly impervious. Moderate strength and stability,- nearly tability;nearly- impervious. Low strength and stability; impervious. Low strength and stability; impervious. Low strength and suability; imnrrvious. Moderate strength and stability; nearly impervious. Moderate strength and stability; early impervious. Moderately low strength and stability; nearly- impervious. ;Moderately low strength; nearly iInpervious. Moderately low strength and stability; nearly impervious. Moderate to moder- ately low strength and stability; nearly impervious. M lfediiiiil to high available water Capacity. Ifed.illm available water eapacity. lifedium to high available `nater capacity. Medium to high available water capacity. Medium to high available water capacity. Medium to high available water capacity. Medium available water capacity. Medium available water capacity. Medium available water capacity. Medina) available Water capacity. Medium available water capacity. Medium (available water capacity. Medium available waster capacity. Medium available water capacity. Medium available water capacity. Medium available water capacity. Medium available water capacity. M Soil series and neap symbols Granville SOIL SURVEY Suitability as source of --- TABLE 6.---E'nyaneering Degree of limitation for --- Recreation Septic tank _._.__--.-._._—.._........... Topsoil Road fill Homebuilding sites absorption fields Campsites (GrB, Fair (GrC, GrC2).._..----.-.---.-____-- Fair- - - -- (GrD)__,_---- -------- Fair- - - -- Helena: than 10 percent. (HeB, I (HeC, HeC2)------------------ Fair --.--- (He©)---------------------- I Fair ----- .Herndon: (HrB, HrB2)____-___-.-_--..___ (HrE)-.-- Lloyd: i Louisburg: (Lo S, Lw B, (For interpretations of the Wedowee soils in Lw P and LWB2; refer to the Wedowee series.) Fair_ - - Fair., - _. _ Fair- _ _.. - Fair- . - -- Fair-- --- Fair-_- Fair- - - - - Fair_ --- Fair_ Fair---__ f Poor._... Poor----- Poon.---- Fair- oor..____Poor..____Fall`_ - _ .- Fair- - _ ._ _ Fair_. - Fair_ - Fair.._ Fair- - i Fair -.___._I Fair- - - - - i i Slight - ---------------- Slight________________ Moderate: slopes greater than 1.0 percent. Severe: shrink -swell potential. I Severe: shrink -swell potential. I Severe: shrink -swell I potential. Slight --------- -------- Slight ------------------ ModeraLte: slopes of 10 to 15 percent. TAloderate: slopes of 15 to 25 percent. Slight ___--------------- Slight_._-------------- Nfoderate: slopes greater than 10 percent. Moderate: depth to j rock is 2 to 5 feet. Slight_---- _- — ,Slight.._-----_ Slight- ------------- Moderate: slopes of 6 to 10 percent. I Moderate: slopes Severe: slopes greater greater than 10 than 10 percent. percent. Severe: slow percola "Moderate: fair tion rate. trafficability. Severe: slow pereola,- Moderate: slopes of tion rate. B to 10 percent; fair trafhcability. Severe: slow pereoha,- li Severe: slopes tion rate. greater than 10 percent. Moderate: medium percolation rate. Moderate.: medium percolation rate. Moderate: medium percolation rate: slopes of 10 to to percent. Severe: slopes ,Treater than 15 percent:. Moderate: medium percolation rate. 1loderate: medium percolation rate. Moderate: medium percolation rate; slopes of 1.0 to 15 percent. Severe: depth to rock is 2 to 5 feet. 1 Slight____._. ... _.- foderate: slopes of G to 10 percent. were: slopes greater than 10 percent. °•were: slopes greater than 15 percent. .ight--------- ------ [oderate: slopes of 0 to 10 percent:. evere: slopes greater than 10 percent. fight..- - --- WAKY, COUNTY, NORTH, CAROLINA tc;r°°'PrdAtiOn,s_- Continued Degree of limitation for --Continued Recre:xtion- Continued Highway location Picnic areas Intensive play areas Slight..._.--------____ flight__ Modcrate: slopes of 6 to 10 percent. Moderate: slopes greater than 10 percent. Moderate: fair trafhca.bility- Moderate: fair trafffficability. Moderate: slopes of 10 to iii percent. Slight -------------- S1ig11t------------- Aloderate: _slopes greater than 1.0 percent. lloderalte: slopes greater than 15 percent. Severe: slopes greater than 10 percent. Moderate: fair t,rcaf&cability. Moderate: slopes of 6 to 10 percent; fair traf&cability. Severe: slopes greater than 10 percent. Slight __--- --------- Moderate: slopes of 6 to 10 percent. Severe: elopes greater than 10 percent. Severe: slopes greater than 15 pereent.. Unstable Cut slopes__ 1 Unstable cut slopes__. Unstable cut slopes-_ Highly plastic; frost -susceptible material; anstable Slopes. Highly plastic; Highly susceptible material; unstable slopes. Highly plastic; frost -susceptible material; unstable slopes. Frost -susceptible material.. Frost. -susceptible material. Frost -susceptible material. Frost-suseeptible material. Frost -susceptible anaterial. Frost suseeptible material. Frost -susceptible material. Soil features affecting -- Farm ponds Reservoir area, Compacted embankment Moderate per- meability. f Moderate per- meabilit3-. Moderate per- meali liy. Slosh permeability.. Slow permeability... Slow permeability - 1 Moderate per- meability. Moderate per- meability. 1lloderate permea- bility. Moderate perinea- bility. Moder ste permea- bility. Moderate permea-• bility. F47odp -ate permea- bility. i Severe: rock_. ---- Rock- -_____..-.------ Moderatelyra,pid permeability. ! .Moderate to low strength and stability; nearly impervious. I Moderate to low strength and stabiliy; nearly impervious. Moderate to low strength and stability; nearly impervious. Low strength and stability; impervious. Low strength and stability; impervious. Low strength and stability; impervious. :1loderately lour strength and stability; nearly impervious. Moderately low strength and stability; nearly I impervious. Moderately low strength and stabil- ' ltj, ; nearly imper-- vions. Moderately low j strength and stabil- ] ity; nearly imper- vio...s. .Moderately low or low strength and stability; nearly impervious. Moderately low or low strength and stabilit}r; nearly impervious. Aloderatcly low or low strength and stability; nearly impervious. Moderate strength and stability; nearly impervious. Sprinkler irrigation I Medium available water capacity. Medium available water capacity. Medium available water capacity. Medium .available water capacity. .1Iedium available water capacity. Medium available water capacity. Medium available water capacity. I. Medium available water capacity. A-Tediurn available water eapaezty, Aledium available water capaeitT . Medium available_ w,-Aer capacity. :Medium available water capacity. Medium .available water capacity. Low available water capaeity� 'Slight ----- --------- Moderate: slopes of 6 to 10 percent. Aloderate: slopes i i Severe: slopes greater than 10 greater than 10 percent. percent. Unstable Cut slopes__ 1 Unstable cut slopes__. Unstable cut slopes-_ Highly plastic; frost -susceptible material; anstable Slopes. Highly plastic; Highly susceptible material; unstable slopes. Highly plastic; frost -susceptible material; unstable slopes. Frost -susceptible material.. Frost. -susceptible material. Frost -susceptible material. Frost-suseeptible material. Frost -susceptible anaterial. Frost suseeptible material. Frost -susceptible material. Soil features affecting -- Farm ponds Reservoir area, Compacted embankment Moderate per- meability. f Moderate per- meabilit3-. Moderate per- meali liy. Slosh permeability.. Slow permeability... Slow permeability - 1 Moderate per- meability. Moderate per- meability. 1lloderate permea- bility. Moderate perinea- bility. Moder ste permea- bility. Moderate permea-• bility. F47odp -ate permea- bility. i Severe: rock_. ---- Rock- -_____..-.------ Moderatelyra,pid permeability. ! .Moderate to low strength and stability; nearly impervious. I Moderate to low strength and stabiliy; nearly impervious. Moderate to low strength and stability; nearly impervious. Low strength and stability; impervious. Low strength and stability; impervious. Low strength and stability; impervious. :1loderately lour strength and stability; nearly impervious. Moderately low strength and stability; nearly I impervious. Moderately low strength and stabil- ' ltj, ; nearly imper-- vions. Moderately low j strength and stabil- ] ity; nearly imper- vio...s. .Moderately low or low strength and stability; nearly impervious. Moderately low or low strength and stabilit}r; nearly impervious. Aloderatcly low or low strength and stability; nearly impervious. Moderate strength and stability; nearly impervious. Sprinkler irrigation I Medium available water capacity. Medium available water capacity. Medium available water capacity. Medium .available water capacity. .1Iedium available water capacity. Medium available water capacity. Medium available water capacity. I. Medium available water capacity. A-Tediurn available water eapaezty, Aledium available water capaeitT . Medium available_ w,-Aer capacity. :Medium available water capacity. Medium .available water capacity. Low available water capaeity� W Soil series and map symbols Louisburg ---Continued (LoC, LwC, LwC2)_- (For interpretations of the Wedowee soils in LwC and LwC2, refer to the Wedowee series.) Lynchburg (Ly)_......___--_____._--- Madison: (MdB2)-- - ---------------- Mantachie. (Me)------------------ ill ayndan (Mf ,__.-_----- (Mag, MgB2, MgC, MgC2)_--��� (MyS: f (MyC, MyC2)--_____________.-- SOIL, SURVEY suitability as source of --- Topsoil Road, fill Homebuilding sites Ftair__._-_; Faaar.___-- Fair- Fair to poor. Fair....... _ _ Fairi ------ Fair- Fair- Fair ____- Fair-Fair-Fair to good. Fair -____j I Fair_____I Fail'._ _.... _ _. Fair- _ i f Fair Fair_._ _ - _I Fair- _..__ Good---- Fair- Fair- Fair ----- Fair_____ Fair.. _. _ _ _ Fair ...... Fair_. _.... _ _ Fair-,.... Fair__...__t f Fair.. Fair_ Fair.. _ ._ ..... TABLE 6.­—Eaagza2c:ermg Degree of limitation for— Recreation Septic tank absorption fields Campsites Moderate: depth to ' � Moderate: depth to I Aloderate: slopes of rock is 2 to b feet. rock is 2 to 5 feet- 6 to 10 percent. I Moderate: depth to I moderate: depth to Severe: slopes greater rock is 2 to 5 feet; rock is 2 to 5 .feet. than 10 percent. slopes greater than 10 percent. Moderate: flooding; Severe: flooding; i Moderate; high high water table. I high water table. water table; fair trafficability. Slight---------------- Moderate: medium percolation rate. Slight Moderate: Moderate: ----------------- medium percolation rate. slopes of 6 to 10 percent. Moderate: slopes of Moderate, medium Severe: slopes 10 to 15 percent. percolation rate; greater than 10 slopes of 10 to 15 percent. Moderate,: slopes of percent. Severe: slopes � Severe: slopes 15 to 25 percent. greater than 15 greater than 15 percent. I i percent.. ! Severe: hooding; Severe: flooding; Severe: high water high water table. high water table. ! table. Slight --------------...-.j Moderate: medium Sli h g t.___._______.____-- percolation mate. Slight__---------_-.__-__ Moderate: medium Moderate: slopes of i percolation rate- 6 to 10 percent. i Moderate: slopes Moderate: slopes of I Severe: slopes greater than 10 10 to 15 percent, greater than 10 Percent. percent. AWfodemte: slopes Severe: slopes Severe: slopes greater than 15 ; greater t.ha.rt 15 1 greater than 1.5 percent.. j percent. P percent.. I Moderate: coarse Moderate: medii.rm 'Moderate: coarse fragments, percolation rate. fragments. Slight.____ ---------- Moderate --------------- f Slight Slight-.._! Moderate____- -_---._-': loderate: slopes of 6 to 10 percent. interpretations—Colitis tied Degree of limitation for—Continued Id.eoreation—C7 olati nuod Picnic areas ( Intensive play area,, WAKE COUNTY, NORT-H CAROLINA Ilighway location I Slight.,,_,_.___..__.__._ Severe: rock_..-.--- Rock..____..____.. _. i Moderate: slopes Severe: slopes i Rock ------------- greater than 10 greater than 10 percent. pereen t-. Moderate: high water table; fair trafficability. Slight_. --------------- _ _----------- Slight-.- - - - - - - - - -.- - - Slight-.------._._--.--- Moderate: tloderate: slopes F of 10 to 15 per- cent. f Moderate: slopes of 15 to 25 per- cent. Severe: high water table. Moderate: high Seasonally high water table.; fair water table. tratlioability. material. Slight. ------ Frost. susceptible Frost -susceptible Inaterial. Moderate: slopes Frost -susceptible of 6 to 10 percent. j material. ievere: slopes greater than 10 percent. severe: slopes greater than 15 percent. Sevc+re: high water table. Frost,-auscelrt.ible material. Frostsusccptible material. High water table; flooding. Slight_.__w..__._ _-.' Slight--------____-= Frost ylzsccptible Pty; nearly lmper- II material. Slight- _-__--__--_ - Moderate: slopes Frost -susceptible strength and stabil- of 6 to 10 percent. material. 11loderate: slopes Severe: slopes Frost -susceptible of 10 to 15 per- I greater than 10 Inaateri<al. cent. percent. Moderate: slopes Severe: slopes Frost -susceptible of 15 to 25 greater than 15 material. percent. percent. I i Moderate: coarse Moderate: coarse Frost -susceptible fragments. fragments. material. Slight_.... Slight.- 3115-403-701 ---3 Slight____________.' Frost -susceptible material, Moderate: slopes of i Frost -susceptible 6 to 10 percent,.r material. Soil features affecting— Farm ponds Reservoir area Compacted embankment i Aloderately rapid permeability. Moderately rapid I permeability. In Sprinkler irrigation IA:loderate strength :Low available and stability; nearly water capacity. impervious. Aloderate strength I Low available and stability; nearly water capacity. impervious. ' 'Nloderate pelnnea- I Moderate to lore bilityr, strength and stabil- I Pty; nearly lmper- V1011s. Moderate perinea- Moderate to low bility. strength and stabil- ity; nearly- imper- vious. Moderate permea- Moderate to low bility. strength and stabil- ity; ncarl. imper- Vious. -Moderate permea- Moderzate to low bility, strength and stabil- it ;y; nearly imlPer- violls. ldioderate perinea- Moderate to low bility. j strength and stabil- ity; nearly iroper- V1pliR. 1Lloderaately iloderate strength rapid perinea-- and stability"; bility'", I nearly impervious. Moderate perruea- i 111oder:ata to low bilit}". strength and stabil- ity; nearly imper- VIOUS. Moderate pormea- Moderate to low bility. strength and stabil-• UY; nearly imper- vions. :Moderate pennon- Moderate to low bility. strength and stabil- ity; nearly imper- Moderate perrne- viotls. Moderate to low ability. strength and stabil.. ity; nearly impel•- vious. Moderate perme- Moderate to low ability. strength and stabil- ity; nearly imper- vlon s. Moderate perine- Moderate to low ability. strength and stabil-- ity; nearly imper- i violls. i'lloderat.e perme- Moderate to low "ability. strength and stabil- ity; nearly irnper- viorls. Medium :available water capacity. I Medium available water capacity. Medium available water capacity. Nlediuin available water caapaeity. Medium available water capacity. 1lediuln available water capacity. Medium available water capacity. illedium available water capacity. Medium available water capacity. Alediurn available water capacity. Medium available water capacity. Medium available water capacity. Medium available water capacity. w Soil series :and inup symbols :Alae>odan---Continued (MYD-)------------ - --- - N orfolk: (NoA, NOB, NoB.1)'_ (NoC, NoC2)- - --- Orangeburg: (OrB, OrB2)----------------- (OrC2)-- _-_.----- Pinkston: (PkC)------------ ---------- (PkF)---------_-------------..._ Plummer "P Rakes (Fla)------..__._ --- R,oanoke (Ro)____.-------------_.... Troiip..-.._---- ---- -. - - - -- ( flapped 01113- in tl. complex Nvith Avagrain soils.) SELL SURVFY Suitability 11,a "Or:rree of---.- - Topsoil 1 Road fill homebuilding sites TABU 6 �n,�d'irr.cE.rixt.� D(gree of limitation for— Septio 4rnk ,absorption fields Fair,..._._ -1 Fa dr-- _.� Moderate:: slope., greater than 10 percent. Fair- .--` Good____ Slithb------- ___ ___._ Slight-____ Fair--.. --� Good____, Slight- Fair -----j Good..___I Slight_..._ ---( Slight-. Ftair___-._ Good____! Slight_ S13iht------------_--- Fair-___' -----------_. Fzair- _ _ _-; Nfoderiatc: depth to rock 2. to 5 feet. Fair _ _-.-- Fair-_-: Afoderttewhere slopes are. 10 to 25 percent; depth to rock 2 to 5 feet. Severe where slopes are greater than. 25 percent. i Poor_- Fair -I S)evere: flooding; high water table. Fair---__ Fair- - _- Severe: flooding, high 1voter trible. Poor_ . _ _ Poor- _ _ -i Severe: flooding; high water table 'oor__ Fair --_-_.I Slight,- ------. -__.-_ �i�ance: f Fah,__ -J Poor-.--- Severe: shrink -swell potential. Fair-_-.--_ Poor-- __i oc"Verc: shrink -swell � � i pateaatla.l. i i W agram : (WaA, WaB, WDA)..__-.. Fair__ j (rood..___ Slight _---------_.-_ (For interpretations of the Troup soil in WgA, refer ! to the Troup series.) Severe: depth to rock 2 to 5 feet. Severe: depth to rock 2 to o feet. Severe: flooding; high water table Severe: flooding - high water table,.. € Recreation Ca nipsites Severe: slopes gron't-er thfm 10 percent. Slight.- - Moderate: slopes of 6 to 10 percexrt. Slight ----------- - --- Moderate: slope, of 6 to 10 percent. flight Where slopes rare 0 to Ei percent. Moderato where elope."' rase 6 to 10 perceait. 'ever(,: ~lopes greta,ter than 10 percent. jcv ere: flooding; hip;: water table. SPC"ere: floodhl,,; high water taable. Severe: flooding; Severe: flooding; high water table. high Water table. I Moderate: rapid per- Slight_ colation rate; hinited filtering action. Severe slow percola- Aloderate fair tion rate; shrink- tr if c ability. "well potents al. Severe: 9105s per•col.a- Ifioder;ate fairy ,flit tion rate; ,prink- ability; -lopes of £i swelt potential. to 10 percent. Slight ------------- .__.-! Slight ---------- :nterpretations----Continued Degree of limitta.tion for, . Continued rt ocreation—Coit! ntie d Picnic ureas + Tntoymive play -trc;as 17oderate: ,dopes of 10 to 15 percent. Slight --------------- Slight -------- ---_- ___.__Slight..------ ----- -- Slight- - - Slight'___-- ------ Slight: slopes of 0 i to all percent. Moder,,de where ,lopes are 10 to 25 Percent. Severe where s'opes ,agreater than 25 percent. Severe: flooding; Ng i waiter ta-,,ble. Severe: flooding; hig-li water table. I Sesvere: flooding; High waiter table. I Slight,.. Severe: slopes greater thala 1.0 porcent. DRi oderatc : slopes of ti to 10 percent. Slight-------------- Moderate: slopes of G to 1.0 percent. WAKE C.'.ClliNTY, NORTH CAROLINA Soil featureb affecting— Highway location Frost -susceptible III teriaa 1. ;\one__..._______.____ None_- shone --- None.----------- -- Severe: rock. --___-i Rock ___-----.------ Severe: slopes ? Rock ------ greater thaaea 10 percent; rock. Severe: high iv:iter bible. Severe: flooding; higta w.ator• trz.ble. Severe: flooding; high water table. Moderate: fair traflicaability . High wtater table; ditchbanks un stable. High water table l.igh water table; flooding. ,n, -,table cant slopes_.., Moderate: fair I Moderate: fair j Frost -susceptible traflicability, . traffic2bility_ i inaterital. :Moderate: fair Iodorate: fair i Frost-suseeptible j traafBc.ability. traatiicability; material. slope, of li to 10 ]Farm ponds Reservoir meta, f C'olnp a cted embanknio3it f Nfoderate Perme- ability. Moderate perme- ability. iVloderate. perme- .ability. Moderate pernie- ability. . Moderate perme.. ability. AToderately rapid permeability. Moderately rapid p.P membility. I:ipid permetabil•, ity. i Joderdte perPnea- bility. ;low Pel -me ttbility._I vapid permeabil- ity. Slow permeabhity- allow permeability.. percent. I Slight____.----- ._j Slight ... .------ None_..-----_.. ltToderaate,permeca- bility. 105 Sprinkler irrigation 'Modcrate to low .1lediugn available F,trength and stabil- water capacity. ity; nearly- ilnper- vious, l2oderate strength and Medium available; stability; imper- water capacity. vi ou,s. iiloderate strength and Aledinrra available: stability; imper- 1 water capacity. Y'i. bPa r. Moderate strength and � Aledium avaih ble stability; imper- water Ga1.Daerty. viol s. Moderate strength and Medium available stability; imper- water capacity. vions. A,Toderate strength Fond Low available stability; pervkou.s. hater c p'wU}_ lodelate strength. and Low available stability; perviou's. w.Ptor capteity, Moderate strength and j Low avaaihab'le stability; w:at,®r caa.p acity* orl. ,70derate ,strength and Medium ,.a,vaail<able at,vbility; imper- water capneity. e-iotaw. Toderatclylow strength lled`uni aY ailtable land stabi2ity ;nearly water cnpabity. impervious. i loderato =atrength Very low at talsable and 58;atbiiity$ Water caapacity. semfpervious. Moderately .low- j strength nand stabil- ity; impervious. Moderately low strength au.d stabil- ity; impervious. itloderaate to low strength and stir.- I bility; nearly impervious. alTedium oxai[aabl , water capacity. Medium aavtailaable water cap acity. Low available, wafter capacity. SOIL SURVEY Suitability as source of -- Soil -,erica and ma.p symbols Topsoil { Road fill j homebuilding sites Wagrarri--Clom inued Wahee (W h) ..._.. _..----___-_ _I Poor ----- Wake: Poor Wedowee: (WmD2)_-- ------ (WmE)..,.-. --- ------ I a Good____ Poor ----- Poor- _ _ _ - Poor ----- Fair.. Fair -_-- Fair - Fair j Severe: flooding; high water table. Severe: shallow to rock. Severe: shallow to rock. Slight... - Slight ------- Moderate: slopes of 10 to 15 percefit. Moderato: slopes of 1,55 to 25 porcont. .. rehaForcirit�rriac,W ii poor. .__ Poor_ __ S"'Ve'rli.aa£flooding; ( 1 tions the_...._...' fair Ration rate; shrink- t lc. Bibb s0il In Wo, Peter to of 6 to 10 permit. Severe: slow perco- Severe: slopes the Bibb series.) j greater than 10 swell potential. percent. White Store: t Severe: clayey stir-- lation rate; shrink- face layer. (Ws,B, WsB2, WtB} Fair_ _ Poor- Scvc;re.: ehrink-Swell rock I to 10 feet; tra$icaability. shrink -swell. poienti.al. (W,,3 C, W;C2)_-_.__....__ Fair ------ Poor ----- Severe: shrink -swell rock I to l0 feet; greater than til shrink -swell potential. potential. j Fair_ Poor.---_ Severe: shrink -swell potential. -_----� r Poor_ __I Poor...___-! Severe: shrink -swell l potential. 1�' ilke�s: Fair- _ - _ - Poor_ - - - - Poor--..._._ Severe: depth to rock 1 to 10 feet; shrink -swell potelitlal. Severe: depth to rock I to 10 feet; shrink -swell potential. TABLE 6.—Enginea -ing Dogreo, of lhnitati0 i for -- Recreation Septic talik absorption fields Slight----------------' Moderate: slope° o'f 6 to 10 percent. I Severe: flooding, i Severe: flooding; high water table. I high water table. Severe: shallow to rock. Severe: shallow to rock. Moderate: inodium. percolation rate. Moderate: medium percolation rate. Moderate: slopes of 10 to 15 percent. Severe° slope greater than 15 percent,. Severe: high waiter table. Slight to moderate: slopes of 2 to 10 percent. Severe: slopes greater than 10 porrent. Slight.... _._......----- _...._,..,_ ltloderate: slopes of di to 10 percent. Severe: slopes greater thn n 10 percent. Severe: slop" greater tbaan 15 percent. Severe: flooding; high water table=. `cvoro: slow perco- Moderate: fath lation rage; shrink- trafficability. swell potential. Severe: slow perco-'Moderate: fair Ration rate; shrink- trallicability; slopes swell potential. of 6 to 10 permit. Severe: slow perco- Severe: slopes lotion rate; shrink- j greater than 10 swell potential. percent. Severe: slow perco- t Severe: clayey stir-- lation rate; shrink- face layer. Swell potential. Severe: depth to i Moderate: fair rock I to 10 feet; tra$icaability. shrink -swell. potential. Severe: depth to Severe: slopes rock I to l0 feet; greater than til shrink -swell percent. potential. 4 i.nter•pretatio7?.,, -C Degree of limitation for ..... Continued Itecr action- -Continued Picnic area's Slight - - - - Scevere: flooding; high wvtor tarble. I Slight Moderataa: slopes of 10 to 25 percent. Slight Slight----_------ ..._ - Moderate: slopes of 10 to 15 porcent. Moderate: slopes of lri to 25 percent. Severe: flooding: high water ta.blc. Moderate: fair tra fti enbility. Modenite: fair t,rza.fhcability. Modet'ate: fair tra$ic'ability; slopes greater Ulan .10 percent. Severe: clayey surface laver. Moderate: fair t•raflicaebility. Intou;sive,, play area Moderate: slopoe of 6 to 10 per- Severe: flooding,•; high water table. WAKE COUNTY, NORTE CAROLINA Soil features affecting - Faarin ponds Sprinkler lli a;hway location rI II :11,1on Ii.cse voIf aarea, Compacted embankment oras.-- ----_--_-- _ Modc:rate pernea.- Madernte to loin bility. s't'rength and stn- eaapncity. bility; nearly Vcry lobe inaperviou"'. Flooding: high Slow perinea—Moderately low water table.. ! bility. strength and gtaa- bility; nearly. _ illipervious. Severe: rock.._ ... �� Rock_ ------- ---- Sev€'re: slopes greater than 10 percent.. Slight ---_---_-----.- Moderate: slopes of 6 to 1.0 percent. Severe: slopes greater than 10 percent. Severe: slopes greater than 1.5 per cent. Severe: flooding; high water table.. Moderate: faqir tntflicaability. Moderate: faqir t;r,a.flicability; slopes of 6 to 10 percent. Severe: Ce: slopes greater than 1.0 percent. Seven.; clayey snrfaice layer. "Moderate! fair. traa.flicability. _loci_ _. .. __..__.-.. Frost snaccptible __anterial. Frost -susceptible material. Frost-suseeptible material - Front -susceptible material. High water table; Hooding. Highly plastic, umteriaal. Highly plaastic material, Highly plastic material. Highly plastic materinl. Ro!+k__..___.-___..__... Moderate: fah. Severe: slop®s Rock,__._._- trafCicabiEty; greater than. 10 slopes of 10 to 20 I percent. percent. Moderatc ly rapid permeability=. Moderately rapid permeability. elodera•te perinea:. bility. Mode rate permea- bility. liloder=ate perinea- bility. _Moderate .perme:a, bility'. 'Moderate permea- bility. Slow perrnen- bility. Slow permea- bility. Slow permea- bility. Slow permea- bility. 107 Low ava.iltab1(l Water capacity. iilediurn :iva.ifable water capacity. NIodera .e strengtta ands Very low stability; ilea`-- aavt01 able sate_' villus. eaapncity. Moderato strength and Vcry lobe sta=Ality; per- :i,vailaable water vi oa IS, t trap CitF. A-loderate strength and titabilrty nearly rmpery rou :,. Moderotc strength and stability; nearly impervious. Moderate strength and stability; nearly impervious. ]Moderate strength and stability; neatrly impervious. -Moderately low strength and stabil- ity: nearly imper-, Vr.ORG. Low strength and stability: imper- vie us. Low strength mid stability: Imper- vious. Low strength and stability: imper- vious. Lowstrength and stability: iniper- vious. \loderatc perinea- ltIoderately low bility. strength .and stabil- ity: nearly imper- vious. Moderate perinea_. 'I Moderately low* bility_ strength and stabil- ity: nearly imper- vious, 1l-ledium a,va,ilcebha water capacity. Medium .cvada,blr.. Water eapaeit'y. M(-.diurn atvaibblc, water crzpa,eity. 1kledimn avai.lnble wator capacity. Medium aavarla.blc waiter capacity. Fl.igh available water capacity. i high nvzrihtble winter eaipacity. High Va,ilaablc wettcr capacity. i i High ar.vaailable water capacity. Trow available _ranter capacity. Low atvailablc water capacity. 108 Suitsa.bllity as eoUrce, of --- SOL SURVEY Sail seriesand map symbals I Top. -oil Road fill j Iforrrebuilding sites i � I TABLE Ea.-- Llbfit.neea°frag Degree of limitation for - Recreation Septic tank -- ---- ta:bsorpt.ion fields Campsites reaction, or the degree of acidity or altcalilrity, is given in terraas of pIl values. Shrink -swell potential indicates the expected change in volume vvlren the moisture content changes. It- is esti- mated. primarily on the basis of the anaount, and type of clay in a soil. fn general, soils classified as CH and A._.-7 havee high shrink -swell potential. Sandy soils have lour shrink-si ell potential. Engineering ing interpretations Table ti gives interpretations of the properties that aa,ffeet suitability of the soils for e.ngineer°ing. The ratings as a source of topsoil are. based on thickness, texture:, fer- t-,il.i.ty, axed. available, water capacity. For examples, arouglaty sands are given a mating of poor; bul,, loazxrs are gi.l en as rating of fair to good, depending on the thick- ne;<s of tlae soil material, Suitability as a source of road fill is rated aaccord:ing to texture, shrinkago, 1plastioity, waP.er content, and the cl,egree of compa.rtiv'e, effort required to obtaixa the de- sired den,,ity. The water content of alae. soil_ at, the tibne of apse rnav affect suitability for road fill. 4 clayey soil, for exaaz r;1e, is difficult, to inui i.le -when itis wet. The degree of limitation for homebuilding sites is based on. the hazard of :Hooding, the height of the water tab�te, slope, star -ink -swell potential, and depth to hard, rock. The degree of limitation for Sewage disposal in septic tank absorption fields is rated aec.ord.ing to permeability of the, soil, its slope acrd filtering capability, the level of the. water table, and the hazard of flooding. Nfuela of IV' ke County is rural, therefore, septic tank absorption. fields arca required for the disposal of sewage. Generally, absorption fields installed in a poorly drained soil fail bei: cruse the soil is not pe=rrneable enough to absorb the, effluent. In wet weather and for long periods afterward, the soils are saturated a d the water table, is near the surface. At such times, there is no space for outflow from the septic tank aa,nd the inovemout of sewaage ef- fluent, is very slow. Onsite investigation should be, I ade before a septic tank absorption field is installed in any soil. The degree of limitation for ca.ranpsites is based on the hazards of flooding and wetness, anal on traaflicability and slope. Tra.fkcabilitay, as used here, refers to ths, a13i1it.y of a soil to support vehicles or other traffic dur- ing Tonna]. Nve€ather. C; mpsitos are, rota-sidered as areas suitable, for tents and activities that accompany outdoor living for periods of at least I week. The degree of limitation for picnic aai.,Cas is h<ased on the hazards of flooding, wetness, and slope. Picnic: areas arcs pJaaces suitable for pleasure outings, where picnic tables and fireplaces are usaaally -furnished, and where. .nems can be prepared and e€ateaa outdoors. Apart froria these facilities, only aa, sntaall amount, of site preparation is needed. The degree of lirnitaat:ion as areas for intensive play is based on the scope, depth to hard rock, wetness, soil tex- ture, tared the amount of coarse tr€agn-ents in and. on the soils. Xre€a,s for intensive pl=ay, are developed fo-r use, as playgrounds and ,for playing organized games, as betso- hal.l, tennis, ,and badminton. The suitability of the soils :for highways is aa.freeted by such soil characteristics, as plsasticity, high water table, wetter content, flooding, depth to hard rock, suseept;ibilily to frost, and stability of slopes. Durham soils, .foga ex- aa:axaple, have no soil features that ads,ersel.y afl'E"et- their use as locations for highways, Their water table is lovas enough tbaat it will not interefer° with the construction of roads, the soil material has good bearing, capacity and is not diffic-ult to compact, and permeability hs rrs.c:rderate. White More soils, on the other hand, ware rated as hav- ing features tbaat, adversely €adect the location of hlgh- w€a;ys. Those, soils aare highly plastic, are slowly pernae- aa.ble, and have low bearing capacity (fig. 15). --_-_-I FoAr_ --_� Poor ...... Severe: de�pto Eth tri � Severe: depth to rock t to a0 feet •; � Severe: slope.. tea'fc.? tlazaaa0 i shernk gda:°ell j shreg€lc-swell p¢reeart. (W x E) -- -...... _ Poor.. boor_ .... Potential, Severe: stoniness, depth to rock 1. tosac°k pot r?tial. Sucre.: depth to 1 to t(3 feet. Severe: slopes grerztc,r I 10 feet. percent. Worsham (Wy).._.... ________-__- _ Poor._ -.-,_._j I � Poor_..... f f Severe- svr�eod flooding; Severe: ��.i flooding; ! I Severe: 1r flooding; ater table, reaction, or the degree of acidity or altcalilrity, is given in terraas of pIl values. Shrink -swell potential indicates the expected change in volume vvlren the moisture content changes. It- is esti- mated. primarily on the basis of the anaount, and type of clay in a soil. fn general, soils classified as CH and A._.-7 havee high shrink -swell potential. Sandy soils have lour shrink-si ell potential. Engineering ing interpretations Table ti gives interpretations of the properties that aa,ffeet suitability of the soils for e.ngineer°ing. The ratings as a source of topsoil are. based on thickness, texture:, fer- t-,il.i.ty, axed. available, water capacity. For examples, arouglaty sands are given a mating of poor; bul,, loazxrs are gi.l en as rating of fair to good, depending on the thick- ne;<s of tlae soil material, Suitability as a source of road fill is rated aaccord:ing to texture, shrinkago, 1plastioity, waP.er content, and the cl,egree of compa.rtiv'e, effort required to obtaixa the de- sired den,,ity. The water content of alae. soil_ at, the tibne of apse rnav affect suitability for road fill. 4 clayey soil, for exaaz r;1e, is difficult, to inui i.le -when itis wet. The degree of limitation for homebuilding sites is based on. the hazard of :Hooding, the height of the water tab�te, slope, star -ink -swell potential, and depth to hard, rock. The degree of limitation for Sewage disposal in septic tank absorption fields is rated aec.ord.ing to permeability of the, soil, its slope acrd filtering capability, the level of the. water table, and the hazard of flooding. Nfuela of IV' ke County is rural, therefore, septic tank absorption. fields arca required for the disposal of sewage. Generally, absorption fields installed in a poorly drained soil fail bei: cruse the soil is not pe=rrneable enough to absorb the, effluent. In wet weather and for long periods afterward, the soils are saturated a d the water table, is near the surface. At such times, there is no space for outflow from the septic tank aa,nd the inovemout of sewaage ef- fluent, is very slow. Onsite investigation should be, I ade before a septic tank absorption field is installed in any soil. The degree of limitation for ca.ranpsites is based on the hazards of flooding and wetness, anal on traaflicability and slope. Tra.fkcabilitay, as used here, refers to ths, a13i1it.y of a soil to support vehicles or other traffic dur- ing Tonna]. Nve€ather. C; mpsitos are, rota-sidered as areas suitable, for tents and activities that accompany outdoor living for periods of at least I week. The degree of limitation for picnic aai.,Cas is h<ased on the hazards of flooding, wetness, and slope. Picnic: areas arcs pJaaces suitable for pleasure outings, where picnic tables and fireplaces are usaaally -furnished, and where. .nems can be prepared and e€ateaa outdoors. Apart froria these facilities, only aa, sntaall amount, of site preparation is needed. The degree of lirnitaat:ion as areas for intensive play is based on the scope, depth to hard rock, wetness, soil tex- ture, tared the amount of coarse tr€agn-ents in and. on the soils. Xre€a,s for intensive pl=ay, are developed fo-r use, as playgrounds and ,for playing organized games, as betso- hal.l, tennis, ,and badminton. The suitability of the soils :for highways is aa.freeted by such soil characteristics, as plsasticity, high water table, wetter content, flooding, depth to hard rock, suseept;ibilily to frost, and stability of slopes. Durham soils, .foga ex- aa:axaple, have no soil features that ads,ersel.y afl'E"et- their use as locations for highways, Their water table is lovas enough tbaat it will not interefer° with the construction of roads, the soil material has good bearing, capacity and is not diffic-ult to compact, and permeability hs rrs.c:rderate. White More soils, on the other hand, ware rated as hav- ing features tbaat, adversely €adect the location of hlgh- w€a;ys. Those, soils aare highly plastic, are slowly pernae- aa.ble, and have low bearing capacity (fig. 15). we interpretations --Continued Degree of limitation for—Continued I Soil features affecting— Recreation--Continued Farm ponds Highway location Sprinkler irrigation Picnic areas Intensive play areas Reservoir area Compacted embankment Severe: slopes I Severe: slopes Rock- ------- Moderate j Moderately low Low available greater than 20 greater than 20 permeability. strength and water capacity. percent. percent. I stability; nearly Moderate: slopes Severe: slopes Rock- _ _ .._ _ _ _ _ ----- Moderate impervious. Moderately low Low available of 15 to 25 greater than 15 permeability. strength and water capacity. percent. percent. stability; nearly Severe: flooding; Severe: flooding; High table,- Moderately impervious. Moderately low Medium high water table. high water table. w w ater flooding. slow permeability. strength and available water capacity. stability; nearly impervious. The suitability of the soils for farm ponds is affected principally by such characteristics as strength, stability, and permeability of the compacted soil material. Esti- mates of strength and stability are based on a standard slope of 2.5:1 for dams less than 50 feet high. Flatter side slopes make a more stable embankment. Perme- ability of an undisturbed soil is the best indicator of seepage. The permeability ratings used in table 6 range from slow for firm clays to rapid for sands. As used in table 6, pervious, semspervious, nearly impervious, and impervious refer to the relative permeability of com- pacted embankments. Water losses are excessive in per- vious soils and are significant in semipervious soils. They are minor in nearly impervious soils and are almost negligible in impervious soils. Rainfall in Wake County is generally adequate for agriculture but is not always well distributed during the growing season. Some of the soils hold little water avail- able to plants, and sprinkler irrigation is beneficial at times. The main factors affecting suitability of the soils for irrigation are available water ca acity, permeability, and rate of water intake. The Soil ca Service, in cooperation with the North Carolina Agricultural Ex- periment, Station, Agricultural Research Service, and �the kr 'cu 'tra Extension Service, has prepared pa r ed an Irrig 'ionde which gives detailed i1f0rJat10 1 useful in the planning and des- of sprinkler irrigation systems. The soils are not rated in table 6for suitability for terraces, but terraces sandother0rosion control are needed on the sloping soils that are cultivated. Ter- races can be established on most soils in the county that have a slope of not more than 6 percent, except those that have a thick, sandy surface layer and those that are shallow over bedrock. Most soils need smoothing to make feasible the construction of parallel terraces, the use of four -row equipment, and the improvement of row drain- age. Adequate outlets are needed for safe disposal of sur- face runoff from terraces, diversions, and other drainage - ways. A cover of plants is needed in these drainageways. Grade -control structures, such as pipe drops, drop spill- ways, and sod chutes, as well as supporting agronomic practices, are needed in places to control erosion. In this section the factors that have affected the for- mation and composition of soils in Wake County are dis- cussed. In addition, the soils are classified according to the current system and are placed in their respective great soil groups according to the old system of classi- fication. — Figure 15.-Roadbank that has caved during a wet season. The soil is a White Store sandy loam. IM Formation of Soils SOM SURVEY Soil is the product of the combined effects of parent material; climate., plant and animal life, relief, and time. The characteristics of a soil at tiny ,given place depend upon the combined effects of these five environmental factors at the particular place.. All of these faactors affect; the foramation of every soil. In many places, hoavever, one or two factors are 61ninant and fax most of the prop- erties of the soil. Parent material Parent inaterial is the mass from which a soil is formed. It is the f,a.etor that is primarily responsible, for the chemical and mineralogical composition of a soil, and it, is one of the most iniporta:nt factors that has caused differences among the soils. Some major differ- ences aanong soils, suc11 as diose in texhire. are e.asill seen and c;�n be determined in the field, AMlinor differ- ences in mineralogical composition are determined only by careful laboratory analysis. The parent ]Material of the soils hi Wake County ranges trona Precambrian to Tertiary in age. It differs greatly from one part of the county to anotlier in anineral and chemical composition. Nevertheless„ the parent. material of the soils in the county is of only three man kinds --(I) material. that weathered from bedrocks (2) Coastal Plain sedhnent; and (3) alluvium. The fol- lowing paragraphs discuss the soils in relation to these main kinds of parent material. Material that y,-,ea.Acrrd from. bedrock. --Cecil, App.- lilig, Durham, and Madison soils have formed in ma- terial that, weathered from mica gneiss, mica, schist, granite, and other acidic rocks that contain a large aanoanat of quartz. 'These soils have a surface layer of sandy loam to loamy sacrad and a subsoil of red to yellow, cla:ye'y material, The Louisburg and Wake soils, which -were, derived from some of these. same kinds of parent material, have a surface laver of loamy sand to sand and have, a, Ioarnv subsoil or Tao subsoil. These soils occ1111 throughout the county, except in the, western part. Lloyd and tenonsoils have formed in material that weathered. from granodiorite, hornblende gneiss, and. other basic rocks, or from mixed acidic and basic rocks. They have a surface layer of loam to fine sandy loan -1 and a dark -red to oliva -yellow, elayev saabsoil. Wilkes soils have the same. bind of parent materi ,l as the Lloyd and Enon soils, and they have a surface layer of sandy loam to silt loam and aa, varicolored and varitext.ured subsoil, Wilkes soils occur prinxarily northwest, and west of. Raleigh. Georg eE- ille, Herndon, and other soils have formed in material that wear,th.ere.d from phyllite, one of the rocks included in the Carolina slates. They have a surfacelayer of silt loam and a red to strong -browny clayey subsoil. These soils have a high content. of silt throughout their profile. They occur primarily in the western part of the county, but smaller areas are east of Zebulon and in the southern part of the county. The Maayodaan, Granville, White Store, and Creedmoor soils have formed, in material that weathered from the Newark group of sedimentary rocks of Triassic age. These rocks are primarily sandstone and shale, but they include, lesser amounts of amid -tone, claystone, siltstorae, and conglomerate. The ltlayodan, Granville, AN71ite Store, aml Cryreedinoor soils have a. surface layer of sande- loam to silt loam and a varicolored, clayey subsoil. The 11fhite Store and C;reedrnoor soils have a clay subsoil thaz.t is very firm when raioist and plastic when vvet, aand they have a high content; of aluminum. The Pinkston soils, which are derived from the same kind of parent material as the White, Store anti C.'x�edlmoor soils, have a surface layer of sandy loam and a subsoil of coarse loamy mna- terial, or they lack sit subsoil. Pinkston soils occur in the western part, of tlae county. CIyoa,O(d Phnn, scG?2ar'rcrat.—'T'he soils that forametl in. Coastal Plain sediment, for example- the Not -folk. Wag - ram, Faceville, Orangeburg, and Rains, have a: surface layer of loamy sand to fine sandy loam and a ,uhsoi'l of loamy to clayey material. Drainage of these soils ravages from s.onaeav haat. excessive to poor. There soils occur in faro southern part of the. county. Allarvr'v,m .--The soils that formed in general allaavivana or in deposits of local alluvium are the Buncombe, (Ion- garee, CJlaeaa acla, 'Wehadlcee, Bibb, and ' antachie. These -oils have, a surface laver of sand to silt, loam and a sub - .,oil of sandy to fine lot,my material. They occur Aong streams and in upland depressions and draws throughout the county, ta:xad they are sonie;what excessively dr111.ixaed to poorly drained. Clinzate Climate. affects the physical, cheinical, and biological relationships of soils, primtxily through the influence: of precipitation and teriipertiture. Water from rain rand snow dissolves minerals, is necessary for biological ac.- tivity,and transports minerals and. organic residue through the soil profile. The amount of w a.ter that x.etn- ally percolates thaol-cola the ��oil paver a Inroad arca de- pends mainly on the amount and duration of niinfaall, tlae relative "halmidity, the rate of evapotranspiration, :and the length of the frost --free period. Temperature in- fluences the kind and the growth of organisms and the speed of physical and chernical reactions -ill the soils. Wake County has a warin, humid climate. The average, traria.. terupera,tu.rEs is (il° h., and the a-verage annual daily minimuarr temperature is 51°. The average monthly temperature ranges from 42" in January to 79" in Jvtly. Precipitation is well distributed and averages 46.17 inches per year. The amount of annual precipitation, however, ranges from 50 inches, in the southern part of the county, to 43 inches in the northwestern part. The mild temperature and the abundant moisture cause rapid de- composition of organic matter and hasten chetnlc_a l re- actions in the soils. The large amount, of rainfall leaolles out a, large part. of the soluble bases and moves less soluble, fine material deeper in the soil. The climate of the county varies only slightly from place to place, and the small differences that occur have probably not caused local differences in the soils. '-,Never- theless, ever- theless, the soils show the effects of climate ill that they are acid and have a profile that is strongly leached in the upperpart. Climate has also effected irariations in the plant and animal life of the county. The most j i -n - portant effects that climate has had on the formation- of WAKE COUNTY, NORTH, CAROLT�:A the soils is the alteration of parent material through changes in teanperaturta, through changes in the amount of precipitation, and through influence on plant and animal life. Plant and animal lite. Plants and animals t€€odify tho formation of. soils to some extent,. The kinds and numbers of organisms in and ora the soil are deterrrained, to a large extent, by tile, clirYaa,ts and, to a varying degree, by the parent material, relief, and age of the soils. Bacteria,, fungi, and other microscopic organisms aid in the weathering, of rocks and in the decomposition of or:�ga.� sic matter. The larger plants and animals furnish organic rnatter and transfer elements from the subsoil to the, surf ace layer. The activity of fungi and rniero-orgfanis ns its the soils of ]fake County. usually takes place only in the upper- most few inches of tllo soil material. Earthworms and other snaa.11 im ertebrat-€ s carry on a slow, but cont.itzous, cycle of soil mixing, also mostly in the uppermost few inches of soil rnaatear•ial,. I.lodent.s ehave hacl little effect oil. the for'anatiora of Foils it) this county. This county -,vas originally covered by at forest corr- sisting of maaty kinds of hardNvoods and. several kinds of conifers. These trees gook up elements from the subsoil and aacl.cl.e,d organic rna,tter by depositing lesLares,roots, hvigs, and ev®ritually= the whole plant ora the surface. .I.{e.re, these, plalit, remains decayed and -were, acted on by inicro-organisms, earthworms, and other forms of life and by direct chemical reaction. ®rganic smatter decays rapidly in a. well--dra.ined soil, but excess moisture rets -ids oxidation of or;gaanic matter. Therefore, decay is sloe in wet soils. Gener.,Jly, the wet- ter the soils tlae gr°eaiaer the accumulation of organic matter. For the most part, plants and animals deterrniaae the lrir€ds of organic matter added to the soil and. the )vaa,1, in which the organic inaatter is incorporated in the soil. They transfer plant nutrients from one horizon to an- oth. r, a,nd often they transport soil niateriaal frons one horizon to another. Plants and aaninia,ls also affect the gains and losses in or-anic matter and the gains and losses of nitrogen and other plant nutrients. They also affect the soil structure and porosity of the soils asad €nay3 also iffeet some other soil cltaractc=zastics. Relief 'Nelief is largely determined by the kinds of rock forrnatiedr€s underlying the soils and by the geologic, his- tory~ of the area, including crustal movements, dissection by streams, and the developnient of the l.andsn.pe through the retreat of slopes. Relief influences the formation of soils through. its effect on moisture relationships, erosion, temperature, and the cover of plants. Its influence is modified by the other factors of soil formation. .In lVake County the slopes range from 0 to 45 percent. The soils of uplands, such as the Cecil, 1llayodan, and Norfolk, have a thick, well-developed profile in areas where the slope is less than 10 percent. Where the slope is greater than 10 percent, geologic rernoval. of soil mate- rial is more rapid. As a resaalt, many of the steeper soils, for example. the Wilkes, Pinkston, and Wake, have a thin, poorly defined profile. Relief largely determines the natural drainage of a soil. As air example, several different soils, such as the Durham, which are well drained, the Colfax, which a.re somewhat poorly drained, and the IN orshana, which are poorly drained, have formed in similar parent, material but have diffe-rerrt characteristics because of differences in drainage. The poorly drained soils have adark-colored. surface la.yea <a.ircl are. nearly level. Most soils; that, fortraed. in alluvium.) also are nearly level. Thais The length of time required Tor a• soil profile, to develop depends on the other factors of soil forma -tion. Less tine is required for: profile development ill a€ hannid, wit.rin area where the cmer° of plants is dense tha€l€ in a clry, cold arca where the cover of plants is sparse. Like- wise, less tame is required for a soil profile to deaelop in coarse-textured inateriaal than in similar, but tines tex- tured material, evell thoaaglr the e?aviroxartlent is ttae same for both. oils vary eon, idera€bly in age.. Old soils -aerterally ]save nxoz€ distinct horizons tliara Durr, nails. In 1S'atlre ('ottrtty the old soils on tho smoother parts of the uphuld, havo elI-defi,raecl horizons. The younger soils that hay e steels slopes as the res alt of geologic erasion are, generally shal- lower over bedt-ock and bar® a less well developed profile than the older soils. young soils, such as those th€€t bare formed in alluvium, have not been in place Iorngr enough for well-defined horizons to have developed. Soils axe classified so that we. can more easily remean- her their significant characteristics. Classification enables was to assemble knowledge about the soils, to se€ their -re- lationships to one another and to the whole environment, and to develop principles that help us to Lill der°startd their behavior and their response to manipulation. First,, through classification, and then through use of soil ana.ps, we. can apply our knowledge of soils to specific fields and other tracts of land, t°ir€.as, in cla�zsification, soils are placed in narro-kr= Cate- gories that are used in detailed soil surveys so that lrnowledg® about the soils can. be organized aa,nd applied. in nraraa.gang farms, fields, and woodlands; in developing rural areas; in performing engineering work; ml,d ill many other ways. They ,ire placed in broad classes to facilitate study acrd c-onrparison in large aareaa, such as countries and continents. Two systems of classifying soils have been used in the United States in recent years. The older systems Ivas adopted in. 1938 (2) and later revised (13). The system currently used was adoptee] for general use by the N aa- tional Cooperative Soil Survey in 1965. The current sys- tein is under continual study. Therefore, readers inter- ested in developments of the current: system should search the latest literature available (12, 16) . In table 7 the family, subgroup, and order of the cur- rent system are, given for each soil series. Also given are. the great soil groups under the older system. Some soil,.- in oilsin this survey areaa, do not fit any series recognized in the current classification, but placing thein in a new series ,would not serve a useful purpose. Such soils are named 112 SOU, ST.?RVEI A, `SABLE 7.---Oa8sifieal on of the soibs Soil Series j Family Subgroup Order Great soil group of the 11938 systern Alta w i5ttt-- - _ . _ _ . ! Fine-loamty, mixed, thermic-_. _ _ Aquic llaapludult•s . _ Mixed,- L lt,sol;;_ - - _ - - Apphng__ Clapey, ka•olirdtic, thermic.....— Typic Harpludtiltam, Colfaax _ _.....-----..' Ultisois,._ Augusta-__-- ---- -I Fine -loamy.•, mixed, tbermic_. _ - Aez°ie, Ochratiquidts------- I t'laermic. U1tIcole- -- I Bibb---_ Coarfde--loamy, 5111 Ceorin, llCld, Typic Haplibg lreRtfl_-_-____j Enon..-,..--- _- Etlbi8ols_ Facewille - Cxeotge.,ville_ -- Goldsboro. C;rtanw ills--- lielena__-- Herndon- - - L1oc d Lour burn. Lynchburg- Madison ----- . _. Mantachie I-_ Clayey kaoliriitic, thermic- ("'havey, kato'}iuitic thormic.---..--- Fine-lo array', silwemic, ther.rric._ Fine-lotamy, siliceous, ilaernric Clayey, mixed, tatermic_-.-_- Claayey, kaolinhic, thermic_ Clayey, kaaolinztic, thermic_,_- Cloarse-loaanty, mixed, thez•mic.._.--� Fine -loam,-, s€lieeoits, Clayey, knolinitic, thermic _ __ _ ._ _ _ _ Frac-losamy, siliecouS, acid thormic. Nlayodrau__ Clsyey, kaoliurtie, theannc_- - - --- - Norfolk---__ _..1 lice -I' Ora:rlgebttrg-- - Fine-loamay, siliceous, thermie_.-_-- Pinkston ------ - Coarse -loamy, mixed, thermic. ----- Plummet•---- ---- Rains___-- - - Roaalake.. Troop --- Vonce-.. _ TVchaAkee Loamy, --ilieeous, thermic- --Fine-loamy, siliceous, thermic. -_ Clayey, mixed, thermic _ .--- _ Loamy, siliceous, therinic - - Clnyey, mixed, thomde..__,_ Loaamy, siliceous, thea°Inrc ...._ Cla ey, kaolinitie, thermie -_ Siliceous Clayey, knolirntic, Fine -loamy, mixed, nonacid, therwic. 7'y pic, ttdipsaarnmcnt.s-- - - . Typic Halpludults ---- Aquic Fluventic. Dystro- chrepts. Aquic Fragiudults_ Typic Udifiuve-r€'i..---------- ? quic Hta,pludults_ _ _ _ Typic Hapludult:,s_. - T_T'ltic Hapludalfs_.,_---- - - Typic Paaleudults-_ Typic Hapludolts_- Ailuic Pale'o.dults._.._ .. Typic Haapludultn --- --- Aquic Haplucitilts - _ - - Typic Hapludults.. _ _ Tyl) Hapludull a - Ruptic-Ultic Dystrochropt.s Aeric Oohrziqui&s --_ . Typic llaphi.dults- - - - - -_ Aerie Fluventic IIapla- cltieptS. Typic Hapludults- _ _ -- TYpic Paleudults.__ Tvpie Paleudults__-_---_-_ Ritptic-Ultic Dvstro°- c ar°epts. Grorsarcnic° Ochraquults TyTpic Ochracluults ___-- - Typic Ochraguults _ Grossaamnic Palleudal6s- 'ly:picHapluduh,, __-- .-- Arcnic Psalendatits Acro Ochinqutilts -_--- Lrthic Udips,a zninentw.._ Typic 1I1pludul.t9 _ Fluventic Fltahla.d,tept _ Entrsols - _ ._ Ulti"ols-_ __- Iraeeptisol�.__ ._. Entisol-. - Ultisols UItrn019_,_-__- A1Cisols_____ T t sols Ultisnl- _.. .. - l:rceptidols_ --- Ulti ols Ultisols ..._ ... _ - - Incept .isols _. _ Tldsols-..---. Ul lisola _ _ _ _ _. Ultis ineeptisolg_.. -_ - iltisols_ U3lisols _ I Lrltr�ol _--� Ultisols,-- Entisol IJ1ti of .. In cel. trsols . 1Vhitt `More --_I Onvey I mixed, thorrrti< VertTic Haapludulta ltisol -._ tiA ilkes _ _ _ . _ onniv, mixed, the r thio, ,'JwIIow -- .' -I y pie Haphzdalfs_.._ .. _ 4lfiscis_-- Worsharn_-_- Clavoy mixed, thermic.._ --------._i Typic Ochraguults_-_--._ - LltisolS__ Red-Yello-w Podzolie soils. R c d-Yollowsr Podgy clic soils. lied-Yeliow Podzolic soils inler°- grading toward Low-l-hunic (dohs Soils. Low -Hun -tic Gley soils. Alluvial soils. fled -Yellow Poclzolie soils. 'Utaaiaal soils. Red-Yello-w Podzolic^ soils iiater°- ;groding toww a.rd 1,9%v-Hurnic, Gley soils. Alhivxtl soils. Planorsols. Red -Yellow Podzolic eoile° Red -Yellow Podzolic soihi intorrrading i oww nt-d PlanosoLs. Red -yellow Podzolic soils° Red --Yellow Podzolic soils. Red -Yellow Podzolic, soil. Red -Yellows Podzolic soil. Plallosols• Red --Y olInwv Podzolic ,solls. Red -yellow Podzolic soils. I ithosols. Red -Yellow Podzolic soils inter - grading towv.ard -Low-Huin.ic G1eyy soils. Ped -Yellow Podzolic ,oils. Alluvial soils irttergr.adilrg r:.own,rd Low -1111111.1c C:"lov, soils. Red Wellow Podzolie soils. Iied Yellow Podzolic soils. Bed -Yellow Podzolic soils. Lithosols. Lown-Hurnic Gley soils. Low-Iturnic Gley soils' bows-Huinic Gley soils. R egosol. Fred Yellaww• Podzolic ;oil, Rc d Yellow Podzolic soils, sista oeols ° Lithosols. Iced -Yellow Podzolic soils. „Alluviaal soils intergradirig towtard Low -Hu nic Clay soils. Pl °nosols. T ithosols. Low-Hurnic Gley soils. I'These soils are taxadjuncts to the respective series. They are enough like Ow series that to new series is nol waarranted, for the series the), strong r°esemble, because they differ from thea,[ series Iways too small to 1st,; of consequence in interpreting their i;, efulnoss or behavior. Soil seien- tists designate such soils as taxa.djuncts to the series for which they are named. In this survey, soils nitnied as members of the Con- garee, Mantachie, iretahee, ktnd Weha.dkee series are. tax - adjuncts to those series. Moils of this :survey area, that were placed in the Congaree series are. more acid than typical for that series, those, in. the Mantachie series are less clayey and axe nonacid, those in the Wahee. series have, a sulssoil that is slightly brighter colored., end those included with the NlTe- tidkee series are, more' acid. Additional Facts About the County This section gives general facts about., Wake Cotaalty�. It describes physiography, relief, drainage, water supply-, and climate. It aalso discs ses briefly the history and de- thermic. Buncombe_ --_I Mixed,- Cecil- _..._._ Chtyey, k€aolinitic, thermic__ Fine -loamy; mixed, thermic__- - Colfaax _ _.....-----..' Fine -loamy, mixed, mesic_.. _ .. ... Congaree i_-- Fine-lwny, mixed, nonacid, t'laermic. Creedmoor...__-. Clnaye°y, mixed, Darhmi_-_ - Fine -loamy, silieeoug, thermic. - Enon..-,..--- _- Fine, mixed, thermic•-___-_- Facewille - Cxeotge.,ville_ -- Goldsboro. C;rtanw ills--- lielena__-- Herndon- - - L1oc d Lour burn. Lynchburg- Madison ----- . _. Mantachie I-_ Clayey kaoliriitic, thermic- ("'havey, kato'}iuitic thormic.---..--- Fine-lo array', silwemic, ther.rric._ Fine-lotamy, siliceous, ilaernric Clayey, mixed, tatermic_-.-_- Claayey, kaolinhic, thermic_ Clayey, kaaolinztic, thermic_,_- Cloarse-loaanty, mixed, thez•mic.._.--� Fine -loam,-, s€lieeoits, Clayey, knolinitic, thermic _ __ _ ._ _ _ _ Frac-losamy, siliecouS, acid thormic. Nlayodrau__ Clsyey, kaoliurtie, theannc_- - - --- - Norfolk---__ _..1 lice -I' Ora:rlgebttrg-- - Fine-loamay, siliceous, thermie_.-_-- Pinkston ------ - Coarse -loamy, mixed, thermic. ----- Plummet•---- ---- Rains___-- - - Roaalake.. Troop --- Vonce-.. _ TVchaAkee Loamy, --ilieeous, thermic- --Fine-loamy, siliceous, thermic. -_ Clayey, mixed, thermic _ .--- _ Loamy, siliceous, therinic - - Clnyey, mixed, thomde..__,_ Loaamy, siliceous, thea°Inrc ...._ Cla ey, kaolinitie, thermie -_ Siliceous Clayey, knolirntic, Fine -loamy, mixed, nonacid, therwic. 7'y pic, ttdipsaarnmcnt.s-- - - . Typic Halpludults ---- Aquic Fluventic. Dystro- chrepts. Aquic Fragiudults_ Typic Udifiuve-r€'i..---------- ? quic Hta,pludults_ _ _ _ Typic Hapludult:,s_. - T_T'ltic Hapludalfs_.,_---- - - Typic Paaleudults-_ Typic Hapludolts_- Ailuic Pale'o.dults._.._ .. Typic Haapludultn --- --- Aquic Haplucitilts - _ - - Typic Hapludults.. _ _ Tyl) Hapludull a - Ruptic-Ultic Dystrochropt.s Aeric Oohrziqui&s --_ . Typic llaphi.dults- - - - - -_ Aerie Fluventic IIapla- cltieptS. Typic Hapludults- _ _ -- TYpic Paleudults.__ Tvpie Paleudults__-_---_-_ Ritptic-Ultic Dvstro°- c ar°epts. Grorsarcnic° Ochraquults TyTpic Ochracluults ___-- - Typic Ochraguults _ Grossaamnic Palleudal6s- 'ly:picHapluduh,, __-- .-- Arcnic Psalendatits Acro Ochinqutilts -_--- Lrthic Udips,a zninentw.._ Typic 1I1pludul.t9 _ Fluventic Fltahla.d,tept _ Entrsols - _ ._ Ulti"ols-_ __- Iraeeptisol�.__ ._. Entisol-. - Ultisols UItrn019_,_-__- A1Cisols_____ T t sols Ultisnl- _.. .. - l:rceptidols_ --- Ulti ols Ultisols ..._ ... _ - - Incept .isols _. _ Tldsols-..---. Ul lisola _ _ _ _ _. Ultis ineeptisolg_.. -_ - iltisols_ U3lisols _ I Lrltr�ol _--� Ultisols,-- Entisol IJ1ti of .. In cel. trsols . 1Vhitt `More --_I Onvey I mixed, thorrrti< VertTic Haapludulta ltisol -._ tiA ilkes _ _ _ . _ onniv, mixed, the r thio, ,'JwIIow -- .' -I y pie Haphzdalfs_.._ .. _ 4lfiscis_-- Worsharn_-_- Clavoy mixed, thermic.._ --------._i Typic Ochraguults_-_--._ - LltisolS__ Red-Yello-w Podzolie soils. R c d-Yollowsr Podgy clic soils. lied-Yeliow Podzolic soils inler°- grading toward Low-l-hunic (dohs Soils. Low -Hun -tic Gley soils. Alluvial soils. fled -Yellow Poclzolie soils. 'Utaaiaal soils. Red-Yello-w Podzolic^ soils iiater°- ;groding toww a.rd 1,9%v-Hurnic, Gley soils. Alhivxtl soils. Planorsols. Red -Yellow Podzolic eoile° Red -Yellow Podzolic soihi intorrrading i oww nt-d PlanosoLs. Red -yellow Podzolic soils° Red --Yellow Podzolic soils. Red -Yellow Podzolic, soil. Red -Yellows Podzolic soil. Plallosols• Red --Y olInwv Podzolic ,solls. Red -yellow Podzolic soils. I ithosols. Red -Yellow Podzolic soils inter - grading towv.ard -Low-Huin.ic G1eyy soils. Ped -Yellow Podzolic ,oils. Alluvial soils irttergr.adilrg r:.own,rd Low -1111111.1c C:"lov, soils. Red Wellow Podzolie soils. Iied Yellow Podzolic soils. Bed -Yellow Podzolic soils. Lithosols. Lown-Hurnic Gley soils. Low-Iturnic Gley soils' bows-Huinic Gley soils. R egosol. Fred Yellaww• Podzolic ;oil, Rc d Yellow Podzolic soils, sista oeols ° Lithosols. Iced -Yellow Podzolic soils. „Alluviaal soils intergradirig towtard Low -Hu nic Clay soils. Pl °nosols. T ithosols. Low-Hurnic Gley soils. I'These soils are taxadjuncts to the respective series. They are enough like Ow series that to new series is nol waarranted, for the series the), strong r°esemble, because they differ from thea,[ series Iways too small to 1st,; of consequence in interpreting their i;, efulnoss or behavior. Soil seien- tists designate such soils as taxa.djuncts to the series for which they are named. In this survey, soils nitnied as members of the Con- garee, Mantachie, iretahee, ktnd Weha.dkee series are. tax - adjuncts to those series. Moils of this :survey area, that were placed in the Congaree series are. more acid than typical for that series, those, in. the Mantachie series are less clayey and axe nonacid, those in the Wahee. series have, a sulssoil that is slightly brighter colored., end those included with the NlTe- tidkee series are, more' acid. Additional Facts About the County This section gives general facts about., Wake Cotaalty�. It describes physiography, relief, drainage, water supply-, and climate. It aalso discs ses briefly the history and de- WAKE COUNTY, NOHT..E , CAROLINA velopment and gives facts about commerce and industry in the county. Facts about the water supply and about physiography, relief, and drainage were taken largely from a manuscript on dile, at the North Carolina Depart- ment of Water Resources.' Physiography, Relief, and Drainage Wakck County is part, of an uplifted, peneplain, dis- sected in places by a network of streams that generally flown in a southeasterly direction. The part of the county in the. Constal Plain province has relief typical both o€ that in the Piedmont, physiographic province and that of the Coastal Plain. Because of this overlapping of ahysiographic, characteristics, the .area is considered to je. a transitional zonae between the Piedmont uplands and the Coastal Plain rand is often referred to as the fall zone or fall line. Throughout the county, erosion has altered the origi- nal relief. Most aret­; are gently rolling, but. the -areas between streams tare brood and flat. No halls stand out prozazi-nently above the general land surface. The areas in which relief is niost broken are near large streams, where the di4ferenees in. elevation range. from 50 to 100 feet front the highest to the lowest points. Differences ha elevation are more pronounced in the iwestern part, of the county than in the southeastern part. The highest point in the county, about 540 feet above sea level, is a quarter of a mile a-aorth of Leesville. The lowest point, about, 160 feet above seta, level, is as half mile southeast of Shotwell, where 'Marks Creek flows into Johnston County. Raleigh, in the central part of the county, is about 350 feet above sea level. in most places a thick layer of soil material and of soft, ra-eatbered rock overlies the bedrock. In some parts of the county. where toad cuts are deep, this soft, weaathered znaateriaa.l is exposed to depths �_;reaater than 20 feet. Stone lines that are apparent at various depths in many places indicate that repeated cutting and filling occurred until the present landscape, mainly of broad ridges turd of smooth, gentle side slopes, became, fairly stable. The Neuse Pincer and its tributaries drain. about, 80 percent of the county, but the southwestern Cram is drained by tributaries of the Cape Fear .Fiver. The Nemw River and ninny of its larger tributaries are ant:e- oedent, streams that ,low in a southeasterly direction. The direction of flow of the smaller st.reaarns is primarily con- trolled by the regional structure and resistance to e.rosior5 of the tanderlvin(r rocks. Because of differences in relief, the natural surface drainage is generally med_ivan to rapid. It is slow. how- ever,. on some nearly level interstream divides and a5n the flood. plains of str4ims. In the part of the county called the Triassic Basin, the valleys are U-shaped and the flood plains are fairly wide. This basin, is a sw alupy de- pression or lake where the rock and mineral deposits were made during the Triassic period. In other parts of the county, the valloys are fir -shaped and the flood plains are .generally narrow. `NOR'rii C&ROLIVA DEPARTHtL_ T of WATER RESOURCES. GEOLOGY AND GRQ_U D -WATER RESOURCES IN THE RALEIGH AREA, NORTH GARO- IUNA. [Open isle manuscript]. 179 pp , allyls. 1960. Water for domestic and industrial uses is obtained from. wells and from surface sources in Wake County. The ground wta:t,er is suitable. for most uses. All of than rocks in the count, except those of Triassic age, are mood, aquife=rs. Springs are rarely used ars aa, source of water, because their yield is small and generally the springs are inaccessible. Drilled wells are the most common type in this county, but, there are a number of bored wells and a few that are dug. Wells that penetrate granite or metamorphic rocks generally yield an adequate amount of water for domestic use. A yield of 1.0 to 1.5 gallons per ininute can be obtained frons wells that pen€atrate the saprolite that overlies granite, or it, can be obtained. from the uncon- solidated Coastal Plain sediment. The yield from soils that overlie rocks of Triassic, age general,.,, is only 3 to 5 gallons per ininute. Where as larger yield is required wells should be located in areas where the potential, sources of ground water appear to be the most, favor- able. Visible features that indicate a favorable source of ground water tare fracture zones, quartz veilas, deeply raeathered areas, intruded dikes, and dr yaws, depressions, or other low spots in the landscape.. The best yielding swells in rocks of Triassic age, _ire located near diaabase dikes. The largest zrunlber of ®yells in this c�ot.araty is on the broad upland flats. ,many wells are on the tops of hills, however, some tire. on the side slopes, and a few are in draws. The aa,veraa,ge depth of these wells is 1557 feet. The yield ranges from 0 to 2,96 gaa110r5s per Minute, but the average yield is 17 gallons per minute. The, d:ianaet:er of drilled w ells used as aa, source of water for domestic rase is 3 to 8 inches; that of drillod wells used to saapply iaa- dust.rial and municipal needs is 6 to 20 inches. In rural areas wells are the source of practically all of the water needed for domestic use. M"titer for munici- palities comes both from wells and from surface sources. Raleigh, Wake Forest-, and Apex obtain water frozaa stream -fed, 5naanmaade lakes Zebulon obtains about one- fourth of its supply of water from four wells, and the rest froze. Privetts Pond on the Little River, and Cary obtains part of its supply frons. 14 wells and par°t. from the city of Raleigh. Other municipalities in the county obtta,in all their supply of water from wells. Fake County has aa, moderate climate. The weather is rarely extremely rigorous, though coustaantly changing weather patterns that affect the area bring aa; variety of weather that is changeable bath by seasons and within seasons. The climate is determiner,, to some extent, by the latitude. Also, the county is located near the central part of North Carolina. It is about halfwaybetween the Appal.aclaiaa.ra 11.0untains, on the northwest, and the At,- lara.tic Ocean, on the southeast, and it, as protected from climactic extremes. to some degree, both by the mountailas and the ocean. 7n winter the mountains serve as an ef- fective barrier to the cold fronts that frequently move, down. across the Central 1!``'lains from Canada. Thmoull- ° By 9.. V. HARDY, State climatologist of North Ca mlina. 114 SCID SURVEY tains turn aside some aveak cold fronts so that these fronts never reaeh the county. The, stronger cold fronts are modified, to some extent, ars they cross the moun- tains. When winds blow from directions ranging; from north- east or east to southwest, the effects of the Atlantic, Ocean, the Gulf of Mexico, and. the inland bodies of water that occupy much of the eastern part of forth Carolina are most, strongly felt. The t-ean.peniture of these bodies of water changes much less rapidly with changes in the seasons than does that of n2asses of land. SeaSonal variaatioazs in the temperature of land areas crossed by air that has passed over these bodies of water tend to be minimized. Also, the air picks, up aa, significant amount of moisture, as it 1xisses over the avaa,ter, and it releases thi, moisture in the forma of rain or snow when it passes over the land. tk-sser influences, for example, relief, cause vaa-ria,tioras in climate within the county, even within short clis tances. The county is mostly gently rolling. It, is mainly between '000 and 500 feet, above, sea, level, though some areas are higher than 500 feet and some are lower than 200 feat. These difl'erenees in relief nand in elevation cause some di er ekes in temperaature. Records of temperature avid precipit,at:iora have been kept ,it several places within the county, and all have been considered in prelaarmg this study of the, climate. The longest period of record is that maintained. since 1S87 to the present, time by the U.S. INreather Burean in or near the city of Ralei(,h. The most complete record Ill rural areas is that it the 1,1'eather Bureau Airport Station at Raleigh-I)arrharn ,airport, That record was begun in 1914 and has been Dept continuously since thaat, time. Table 8 gives facts about temperature and precipitaa,- tiorr. in Wake County. Whera that, table was prepared., consideration was given to all available data for this county. Where, feasible, the data -were adapted so that they would be representative of ternperat,ure a.nd pre- ciprtation in rural areas in the central part of the county, ,.is well as of those in other parts. TEAT11FRATURF.--.-Th.e first coluann.s of table 8 hidicafe both the average temperatures and the average eragr vari- ability of tempera.tarre. in Wake County. The highest, temperature ever officially recorded -Within the comAy occurred on 2 different days in duly 1952, when a, terra•. peraa,ture of 105" F, was reached. The Lowest tenaperaatarre of record is 21' below zero, which occurred in February In09. 01111vonce,since 1899 has the temperattill'o rea,chod zero or below. During waarna spells during; any inwith in winter„ the temperature occasionally reaches as high a5 S0°7 and_ during cold snaa.ps in saunmer, the tenape r•aa:taro sorzae.tinles drops as low as the forties. Rarely, however, does a. temperature as high as SO° occur- in winter crr a temperature as low as the forties occur in summen I<iatire 16 shows the probabilities that, a, specifiedtern. perature will occur on or before the data 'iaa springy or before the specified date ira f<di. Local differ in temperaature, especially in miiiimum temperaa.- ture, cau be caawseel by differences in relief .and by the presence of cities or cola mituity developments. Ila caIvrl, clear weather, heat is radiated frolra ()pert, tansheltered earth surfaaces at, night; the surfaces cool rapidly and, ill turn, cool the layer of air ill colata:c°,t with them. Air, thus cooled, is heavier than --a,rrn air. It flows dotivnhill to the lowest shots and accumulates, in any closed basin in the area. Continued radiaa.tiora aanc@ air dniinage during a clear night cava produce a differ - TABLE 8.-Twiperah r°c an.J precipita-!;oa for (iWil y, N.C. [Elevation, 400 feet] Temperature Month Average Average daily daily maaximum rninirmun Two ycaan,� in 1.0 will have at Ie, st, 4 days with- Precipitatiou I One vea.r in 10 wid have- 47 14. P1, julalllryl 51 33 Februatiry____.____! 53 34 March ----------- til ! 41 April _..___ _- 11`j,y_ _ ___ -_-79 71 49 58 June -------_-_-_1 86 66 Jul -------------*S l Fz 69 August------__-_� S7 68 tieptember- _-- 82 63 October-,.. -� � 72 52 November_ -----_ 61 � 42 December- _..___--11 52 i 34 'Fear ----------- 1 70 51 Two ycaan,� in 1.0 will have at Ie, st, 4 days with- Precipitatiou I One vea.r in 10 wid have- 91 1 47 14. Avera.ge I Maxirnurn Mi.nirnnrn total tem aentWr€; ta-.rnpern,ture 3.0 equal to or i equal to or 3. 2 ithmi- I higher lower t3 aP- i 46. 9 cover 11901%, Inches 6 9 l Fz 3. 3 72 19 3.5 76 24, 3.7 86 33 3. S 91 43 3. 8 97 54 3. 9 97 61 5. 9 j 96 59 5. 4 91 1 47 14. 6 S6 34 li 2. 8 77 ' 26 3.0 67 15 j 3. 2 4 99 I ° 12 ! 46. 9 Less More thnri-- ' tbaan-- Inches i �o-sl panchrs Avcrarge t;empE;rn- Da,,,' s depth of tore with g1o,ly on I 4 --inch snow ' days -, ith depth cover 11901%, 1 3' covet. 1 g Inches Inch% Au',rnhcr panchrs P. L6 66 3 2 40 L 2 5. 4 2 1 42 1. 6 1 6. 0 1 3' 48 1 g ,a 4 0 0 59 12 6.3 0', 0 til lS 8.0 0! 0' 76 2.6E 10.0' 0', 0 79 1. 4 9 7 ©',, 0 79 1.3 6.4 0' 0 73 5 ( (3.2' 0 ( 0 63 1. 1 7. 0 ,2) l"1 52 1. 7 6. 1 1 1 43 36. 1 1 51. 0 i 7 2 60 r An average of 4 daily observations made at 6 -hour intervals. t Average annual highest, temperature. Less than one-half day. 5 Average annual lowest temperature. s Less than one-half ineb. WAKE COUNTY, NORTH CAROLINA ence. of several degrees in minimum temperatures within a short distance. As a result, frost and freezing tempera- tures can occur in. one area while the temperature in a nearby area is above freezing. When dense clouds cover an area, or when winds blow continuously throughout the night, no pockets of cold air form, and temperatures remain fairly uniform throughout the county. PRECIPITATION.—The amount of precipitation de- creases gradually from the southeastern part of the county to the northwest. The, average amount recorded for any given location depends, to a great extent, on the length of the period of years of record. The average amount recorded for a given period, even for a period as long as 25 to 30 years, can vary noticeably from the average for an earlier or a later period of similar length. Comparisons of figures for precipitation for a recent 10 -year period, when the period during which records were kept was the same for all stations, indicate that the average -precipitation is about 50 inches or more per year 11i the southeastern part of Wake County, about 47 inclies in the central part, and only about 43 inches along the northwestern edge of the county at the Raleigh- Durham Airport,. These figures agree fairly well with those for oldereriods in which amounts of precipita- tion were recon ed for the same general areas. No re. - cent observations are available for the extreme southern and the extreme northern parts of the county. In spite of these minor variations, precipitation is generally plentiful and is well distributed throughout the year. Distribution during a particular rain, how- ever, can vary a great deal. The amount of rain received in a storm in summer, generally in a thundershower, is especially likely to vary greatly within a short distance. Individual thunderclouds are sometimes effective in only a small area, and they sometimes cause copious rain in one part of the county while another part has less rain or no rain. Sometimes an area is repeatedly missed by such small-scale summer rains., and it thus becomes dry enough that supplemental irrigation is necessary for crops to grow well. Rains in winter are usually the re- sult of large, moving, low-pressure storms. The amount of moisture these storms bring is likely to be more nearly uniform throughout the county than that received in 'a storm in summer. Thunderstorms in summer occasionally bring rain heavy enough that it causes damage. Ina'given area of the county, rain amounting to as much as 2 inches in a sinVe ho��r is to be expected on an average of about once in 5 years rain amounting to 4 inches or more in an Hour is to be expected only about once in 50 years. In some areas of the county, heavy rain may occur almost every summer, but the area affected is generally small. Data for snow, given in table 8, were mostly derived from records kept during recent years at the Raleigh- Durham Airport, but averages for the entire county were also considered. Though snow may fall at any time dur- ing the period from November through March, it is most likely to accumulate and remain on the ground in Janu- ary and February. A few of the heaviest snows have fallen early in March, but these storms occur rarely and the snow generally melts quickly. Earlier records, not used in accumulating data for table 8, indicate that a Leavy snow once fell in April. FO Z Z W W 5- 0 ir W W (L Z Z 0 0 ®o Ono 00 >_ CPO �510 20- F 20— 30- 0 30— Cr 0 46 Er 50 --- ... (L an 10 20 10 20 3b 10 20 30-10 20 FEBRUARY MARCH I APRIL MAY CALENDAR DATE FALL 2-1 1 1 is i w i. , •i i 10 20 30 10 20 30 10 20 30 10 20 SEPTEMBER I OCTOBER I NOVEMBER I DECEMBER [IN, Figure 16—Probability that the temperature in an open, level area in Wake County will be 16', 20', 24', 28*, 32', 36', or 40° F. after the dates indicated in spring and before the dates indicated in fall. STOR3ES.—Summer thunderstorms are sometimes ac- companied by hail, damaging winds, or both. Hail or windstorms usually affect only a small area however, and a given area is not likely to be damaged by these storms more than once in many years. Once in a great many years, a small tornado accompanies a fhulider- storm, and serious damage is inflicted in a small area. The likelihood is negligible, however, that any given place will be affected by such a storm. At, times in most summers, the -velocity of the wind is strong enough that the limbs of trees are broken and antennas or signboards ire damaged. Also, hail that noticeably punctures to- bacco leaves falls at times. The areas affected by these windstorms or hailstorms are generally small. Sleetstorms or glaze, winter cold fronts, and tropical hurricanes are other storms that sometimes affect the weather of Wake County. Sleet sometimes accumulates on the ground like snow. Glaze results when rain falls Z W 5- 0 ir W Z ®o Ono 00 >_ CPO �510 F 20— 30— 0 Er (L an 10 20 30 10 20 30 10 20 30 10 20 SEPTEMBER I OCTOBER I NOVEMBER I DECEMBER [IN, Figure 16—Probability that the temperature in an open, level area in Wake County will be 16', 20', 24', 28*, 32', 36', or 40° F. after the dates indicated in spring and before the dates indicated in fall. STOR3ES.—Summer thunderstorms are sometimes ac- companied by hail, damaging winds, or both. Hail or windstorms usually affect only a small area however, and a given area is not likely to be damaged by these storms more than once in many years. Once in a great many years, a small tornado accompanies a fhulider- storm, and serious damage is inflicted in a small area. The likelihood is negligible, however, that any given place will be affected by such a storm. At, times in most summers, the -velocity of the wind is strong enough that the limbs of trees are broken and antennas or signboards ire damaged. Also, hail that noticeably punctures to- bacco leaves falls at times. The areas affected by these windstorms or hailstorms are generally small. Sleetstorms or glaze, winter cold fronts, and tropical hurricanes are other storms that sometimes affect the weather of Wake County. Sleet sometimes accumulates on the ground like snow. Glaze results when rain falls UM SOIL SURVEY in freezing weather and forms a layer of ice that ac- cumulates ora the surface where it falls. Periods of ,glaze, sometimes called ice storms, occur less frequently ire this muni,y than in the western and extreme northern parts of. the Piedmont, but; they occasionally cause breakage of trees, shrubs, and cominunic<a,t,ion lines. Usually, vvira- te.r cold fronts must, cross the mountains to reach this area. Therefore, they lose much of the force with which they pass over the Great Plains. Tropical hurricanes rarely cause serioars damage this far inland. They some- thues cause an increase in precipitation and bring; %N�irads of moderate force. OTHER h acTors Ta.z4r Arra;cae CLIMATE.- fac- tors besides temperature, precipitation, and storms affect climate. Among these, are wind, sunshine, and humidity. The prevailing direction of the wind in this county is from the southwest, but the wind blows from the north- east almost as Hauch as from the southwest. It, blowvs from the northeast, especially in autumn. The average velocity of the wind near the earth's surface is 8 miles per hour. The average velocity is higher in early after- noon and is lover between midnightand dawn than at other times. The Baan shines more, than half the total number of daylight hours. T1" tune dur.inh which the sun shines ranges from half the possible time in winter to two- thirds or more of the possible time, late in spring and early summer. The average relative humidity is aboc7t 70 percent year round. The average daily variation ranges from about 50 percent in midafternoon to 85 to 90 pereent at sunrise. The relative humidity varies slightly according to the season. The average humidity is lowest in spring and highest late in sunnner. The first settlers to arrive in what is now Wale County came from Halifax about, 1741. In 1760 one of these settlers built his home in the area that is now the city of Raleigh. Tlw, county %%�a formed in 1771 from paC:rts of Johnston, aanberland, and Orange Counties and wqs named for the Wake fancily. The early settlers grew corn, wheat, oats, tobacco, and. some cotton on the uplands and used the grassy areas ;along streams for gI gazing cattle and grog& Because only crarde implements were available for cultivation and most of the work was done by hand, returns from farm- ing Were small. Most farmers owned a mill for grinding corer and wheat, and a distillery for processing surplus grain and fruit,. 'I'lrey also produced turpentine and tsar, but those products %were of only minor economic im- porta.nce. ,it first, the, settlers did little trading outside of their own area:, but later they began to take flour, pork, and tobacco to New Bern to trade for commodities that they could not produce. Still later, after the Cape Fear River came into use for navigation., Fayetteville became the market for the eastern, southern, and western parts of the county. Petersburg;, bra., was tbe. preferred. inarket for farmers in the northern part of the county, and large numbers of cattle were driven there. The development of AVake County and of the city of Raleigh were closely associated. Alter the country be- oune. independent, $Forth Carolina's General assemblies Met in many different places, basil they had no place to store their Mate records. When they TrIet ire 1.'778, it, was resolved that a permanent site be selected for a State capital. A tract. of 1,000 acres v -as selected for the State capital and was purcha.asod at a price of $2,M. The city %vas planned and was laid out whale it was still in forest and farmland, and it was named Ra. l.eigh for the �� uglisli adventurer, Sir Waaltor Raleigh. The The history of the county is closely linked to tho de- voloprnent.; of the railroads. Between "1836 and 1.870, the towns of Ca.rw, darner, i`47orri; %idle, 13e , Zebulon, and P+ uquay Springs sprang tap along the railroad rights -of.. way, and those communat.aes are still active. The develop- ment of the to%%n.s of Holly Springs, Wake Forest , orest, Wen - doll, and hrai�°lctdale, Haas also itt(inence b.' the gro-,%1,la. of the railroads. As late as :1879, cotton was the most important crop. Corn and simill grains were grown on large acreages, however, incl only small acreages were used to grow sweetpotatoes, hay, and tobacco. Ten years later, the acreages of cotton, corn, and wheaat had decreased con- siderably and the acreages of tobacco, oats, rye, sv eet- potatoes, and hay had increased (9) . This marked the beginning of aa, trend that has continued into the present decade. Cotton is now of only minor importance. To- bacco contributes a major part of thegross farm iaacorne. Cattle, poultry, and hogs are raised extensively; 'in- come from sales of livestock and livestock products ac- counted for more than a, fifth of the gross farm income in 1964. Over the past several decades, industry-, Com- merce, and research have increased steadily ill their oorl... tribution to the economic, life of the county, Government. and education are extremely import,aaut to the economic life of Wake County. Government at; all levels employs a great number of. people. Since, A—, ncanufaeturing has grown -.t arreatIleal. ��9 any people are employed in electronics, in rrretal far:1ori- caa.tion, and in the rrranufa,cture of machinery, apparel, textiles, food items, cherraicatls, and €:E number of other product-', The Research Triangle concept, built-, around Duke University in Durham, the University of North Caroliaaaa at Chapel Dill, and :N'orfla. C"a:rolina: State Lniversit.y at Raleigh. has been one of the great spurs to the ixa.du.s- triaalization of this area. This concept lied to the estnb - lishment of a 5000-aer.•e industrial park to be used for research and research oriented industries. The Hesenrch Triangle Park has attracted leading research firms, and these firms, in turn, have attracted leading rnairllfac- ture.rs to the area. Wake County is also a distributing,` and wholesaling" center. Food distributors, who serve the. eastern 1:0aarrs of the, Carolinas, are among bile most important of t1le.se distributors and -wholesalers. N unrerous retail stores, in- surance companies, utility companies, and others not only serve the comataunit-ies but, also provide employaa�.ent for many people. WAKE COUNTY) NORTH CAROLINA Literature Cited (1) AMERICAN ASSOCIATION OF STATE HIGHWAY OFFICIALS. 1961. STANDARD SBFCIFICATIONS FOR HIGHWAY MATERIALS AND METHODS OF SAMPLING AND TESTING. Ed. 8, 2 v., illus. (2) BALDWIN, M., KELLOGG, C. E., and TIioRP, JAMES. 1938. SOIL CLASSIFICATION. U.S. Dept. Agr. Ybk.: 979- 1001, illus. (3) BROADFOOT, W. M., and KRINARD, R. M. 1959. GUIDE FOR EVALUATING SWEETGUM SITES. U.S. For- est Serv. South. Forest Expt. Sta., Occasional Paper 176, 8 pp. (4) 1963. GUIDE FOR EVALUATING WATER OAK SITES. U.S. For- est Serv. Res. Paper 80-1, 8 pp. (5) CHAIKEN, L. E., and NELSON, T. C. 1959. SITE CURVES FOR PIEDMONT VIRGINIA PINE. U.S. For- est Serv., S.E. Forest Expt. Sta. Res. Note 135, 2 pp. (6) CorLE; T. S. 1952. SOIL AND THE GROWTH OF FORESTS. Advances in Agron. I V : 329-398,2 pp. (7) and SCHUMACIIER, F. X. 1953. SITE INDEX of LOBLOLLY AND SHORTLEAF PINES IN THE PIEDMONT PLATEAU REGION. Jour. Forestry 51: 432-435. (8) MCALPINE, ROBERT G. 1959. FLOODING KILLS YELLOW -POPLAR. Forest Farmer 19 (3) : 9, 13-14, illus. (9) NORTH CAROLINA STATE BOARD of AGRICULTURE. 1896. NORTH CAROLINA AND ITS RESOURCES. 413 pp., illus. Winston, N.C. (10) OLSON, D. J. 1959. SITE INDEX CRAVES FOR UPLAND OAK IN THE SOUTH- EAST. U.S. Forest Serv., S.E. Forest Expt. Sta. Res. Note 125, 2 pp. (11) OosTING, H. J., and HESS, D. W. 1956. MICROCLIMATE AND RELICT STAND OF TSUGA CANADEN- SIS IN THE LOWER PIEDMONT OF NORTH CAROLINA. Ecol. 37: 28-39, illus. (12) SIMONSON, Roy. W. 1962. SOIL CLASSIFICATION IN THE UNITED STATES. SCI. 137: 1027-1034. (13) THCBP, JAMES, and SMITH, Guy. D. 1949. HIGHER CATEGORIES OF SOIL CLASSIFICATION: ORDER, SUBORDER, AND GREAT SOIL GROUPS. Soil SCI. 67: 117-126. (14) UNITED STATES DEPARTMENT OF AGRICULTURE. 1929. VOLUME, YIELD, AND STAND TABLES FOR SECOND - GROWTH SOUTHERN PINES. Misc. Pub. 50, 202 pp. (Out of print) (15) 1951. SOIL SURVEY MANUAL. U.S. Dept. Agr. Handbook 18, 503 pp., illus. (16) 1960. SOIL CLASSIFICATION, A COMPREHENSIVE SYSTEM, 7TH APPROXIMATION. Soil Survey Staff, Soil Con- servation Service, 265 pp., illus. ( Supplement is- sued in March 1967) (17) WATERWAYS EXPERIMENT STATION, CORPS OF ENGINEERS. 1953. THE UNIFIED SOIL CLASSIFICATION SYSTEM. Tech. Memo, No. 3-357,3 v., illus. Glossary Acidity, soil. See Reaction, soil. Alluvium. Soil material, such as sand, silt, or clay, that has been deposited on land by streams. Available water capacity. The capacity of a soil to hold water in a form available to plants. The amount of moisture held in a soil between field capacity, or about one-third atmos- phere of tension, and the wilting point, or about 15 atmos- pheres of tension. Commonly expressed as inches of water per inch of soil. 117 Clay. As a soil separate, the mineral soil particles less than 0.002 millimeter in diameter. As a textural class, soil material that is 40 percent or more clay, less than 45 percent sand, and less than 40 percent silt. Consistence, soil. The feel of the soil and the ease with which a lump can be crushed by the fingers. Terms commonly used to describe consistence are— Loose. Noncoherent; the soil does not hold together in a mass. Friable. When moist, the soil crushes under gentle to moder- ate pressure between thumb and forefinger and can be pressed together into a lump. Firm. When moist, the soil crushes under moderate pressure between thumb and forefinger, but resistance is distinctly noticeable. Plastic. When wet, the soil is readily deformed by moderate pressure but can be pressed into a lump; forms a wire when rolled between thumb and forefinger. Sticky. When wet, the soil adheres to other material, and tends to stretch somewhat and pull apart, rather than to pull free from other material. Hard. When dry, the soil is moderately resistant to pressure and is difficult to break between the thumb and forefinger. Soft. When dry, the soil breaks into powder or individual grains under very .slight pressure. Cemented. Hard and brittle; little affected by moistening. Creep, soil. The downward movement of masses of soil mate- rial, primarily through the action of gravity. The movement is generally slow and irregular. It occurs most commonly when the lower part of the soil is nearly saturated with water, and it may be facilitated by alternate freezing and thawing. Drainage, natural. Refers to moisture conditions that existed during the development of the soil, as opposed to altered drainage, which is commonly the result of artificial drainage or irrigation but can be caused by the sudden deepening of channels or the blocking of a drainage outlet. The following seven different classes of natural drainage are recognized: Excessively drained soils are commonly very porous, are rapid- ly permeable, and have low water -holding capacity. Somewhat excessively drained soils are also very permeable and are free from mottling throughout their profile. Well -drained soils are nearly free from mottling and are com- monly of intermediate texture. Moderately well drained soils commonly have a slowly perme- able layer in or immediately beneath the solum. They have uniform color in the A and upper B horizons and have mottling in the lower B and C horizons. Somewhat poorly drained soils are wet for significant periods but not all the time. Poorly drained soils are wet for long periods, are light gray, and generally are mottled from the surface downward, though mottling may be absent or nearly absent in some soils. Very poorly drained soils are wet nearly all the time. They have a dark -gray or black surface layer and are gray, light gray, or without mottling in the deeper parts of the profile. Erosion. The wearing away of the land surface by wind, running water, and other geologic agents. First bottom. The normal flood plain of a stream, subject to fre- quent or occasional flooding. Flood plain. Nearly level land, consisting of stream sediment, that borders a stream and is subject to flooding unless pro- tected artificially. Horizon, soil. A layer of soil, approximately parallel to the sur- face, that has distinct characteristics produced by soil - forming processes and that differs in one or more ways from adjacent horizons in the same profile. These are the major soil horizons: 0 horizon. The layer of organic matter on the surface of a mineral soil. This layer consists of decaying plant residue. A horizon. The mineral horizon at the surface or just below an O horizon. This horizon is the one in which living or- ganisms are most active, and it is therefore marked by the accumulation of humus. The horizon may have lost one or more of soluble salts, clay, and sesquioxides (iron and aluminum oxides). 1.1s SOIL SURVEY 1; horizon. The mineral horizon below an 4 horizon. The B horizon is in part a layer of change from the overlying A to the underlying C horizon. The 11 horizon alw) has dis- tinctive chantcteristics caused by aeemnulaticaa of clay, sesaluioxides, humins, or some combination of: these; by prismatic or blocky structure; by redder or stronger col- ors; or by some combination of these characteristics. The combined A and B horizons are usually called the solum, or true soil. If a. soil lacks it B horizon, the A horizon alone is the solum. C horizon. The weathered rock material immediately beneath the solum. This layer, commonly called the soil parent material, is presumed to be like that from which the over- lying horizons were formed in most soils. If the. under- lying material is known to be different from that in the- solum, hesolum, n Il.onom numeral precedes the letter C. T layer. Consolidated rock beneath the soil. The rock gen- erally underlies a C horizon but may be immediately beneath an A or B horizon. Ln./iltratlon. The downward entry of water into the immediate surface of soli or other material, as contrasted with per- colation, which is movement; of water through soil layers or material. 1lottled, Irregularly marked with spots of different colors that-, nary in number and size. Mottling in soils visually indicates poor aeration and lack of drainage. I3escriptive terms are as follows; Abundance—f(w, comnson, and many; size—fiste, tite!li. mi, and coarses and contrast --faint, distinct, and proan- hicw, The size measurements are these: Fbic, less than 5 millimeters (about 0.2 inch) in diameter along the greatest dimension; medium, ranging from 5 to 15 millimeters (about 0.2 to 0.6 inch) in diameter along the greatest dimension; and coarse, more than 15 millimeters (about 0.6 inch) in diameter along the greatest dimension. Ped. All individual natural soil aggregate, such as a Crumb, a prism, or a block, in contrast to a clod. PernicaNlity, soil. The quality of a, soil horizon that enables seater or air to move through it. Terms used to describe permeability are as follows: Vct-y slow, sloe(:, inoderately sloita, inoderate, moderately rapid, rapids and very rapid. Plvri.thitc. The sesquioxide-rich, hunnus-poor, highly weathered mixture of clay with quartz and other diluents that common- ly shows as red mottles, usually in platy, polygonal, or retic- ulate patterns. Plinthitc changes irreversibly to hardpan or to irregular aggregates upon repeated wetting and drying, or is the hardened relict of the soft, red mottles. It is a form of laterite. Reaction, soil. The degree of acidity or alkalinity of a soil, ex- pressed in p1l values. F1 soil that tests to pH 7.0 is precisely neutral in reaction because it is neither acid nor alkaline. An acid coil is one that gives an acini a°eaction; an alkaline soil is one that .is alkaline in reaction. In words, the degrees of acidity or alkalinity are expressed thus P11 7)H Extremely acid Below 4.5:NeuiralW,_____-.,_-_._._._._G.fit:o7.3 Very strongly acid --4.5 to 5.0 Mildly alkaline_. -_,_.._,__7.i to 7.8 Strongly acid ------___..5.1 to 5.5 Moderately alkalinie__7.9 to 8A Medium a.cid_..__....___._.5,6 to 6.0 Strongly Slightly aeicl- -.6.1 to 6.5 Very strongly alkaline 9A and higher Sand. As a soil separate, individual rock or mineral fragments ranging from 0.05 millimeter to 2.0 millimeters in di;aineter. Most sand grains consist of quartz, but ,and may be of any mineral composition. As a textural class, soil that. is 85 per- cent or more sand and not more than ]0 percent clay. Sr.Nuioxid,cs. Oxides having trivalent rations as iron or talurtti-- num oxides. ,Gilt. As a soil separate, individual mineral. particles that range from the upper limit of cloy (0.002 milliTeter) to the lower limit of very fine sand (0.05 millimeter). As a textural class, soil that is 80 percent or more ,silt and less than 12 percent clay. Soil. A natural, three-dimensional body on the earth's surface that supports plants and that has properties resulting front the integrated effect of climate and living matter acting, upon parent Material, as conditioned by relief over periods of time. ,Structure, soil. The arrangement of primary soil particles into compound particles or clusters that are separated :front ad- joining aggregates and have properties unlike those of an equal mass of unaggregated primary soil particles. The prin- cipal forms of soil structure are --platy (laminated). pris- inatic ( vertical axis of aggregates longer than horizontal) , coluni,nar (prisms with rounded tops), blocky (angular or subangular), and granular. Stratchtrelas.s soils are (1) single grain (each grain by itself, as in dune sand) or (2) mas- sivc (the particles adhering together without any regular cleat%age, as in many claypans and hardpans). Subsail. Technically, the B horizon; roughly, the part of the profile below plow depth. Sabstratuni, Any layer lying beneath the .solum, or true soil. Terrace (geologic). An old alluvial plain, ordinarily flat or uan- dulating, bordering a river, a lake, or the sea. Streain ter- races are frequently called second bottoms, as contrasted svilh flood plains, and are seldom subject to overflow. llfarine ter- races were deposited by the sea and are generally wide. Texture, soil. The relative proportions of sand, silt, and clay particles in a mass of soil. The ba5ie textural classes, in order of increasing proportion of fine particles, are sand., loamy sand,, sandy loam,, locant, silt loam, silt, sandy clay roars, clay loam., silty clap loam, sandy clay, silty clay, and clap. The sand, loamy send, and sanely loam classes may be farther divided by specifying "coarse," `fine," or "very fine," TWh, soil. The condition of the soil in relation to the, growth of plants, especially ;soil structure. (loud tilth refers to the fri- able state. and is associated. with high noncapillary porosity za.tad stable, granular structure. A soil in poor tilth is non - friable, hard, nonaggregated, and difficult to till. GUIDE TO MAPPING UNITS Por a full description of a mapping unit, read beth the description of the mapping unit and the soil series to which it belongs. Other information is given in tables as follows: Map Acreage and extent, table 1, P. 7. Estimated yields, table 2, Y. 74. Described on Engineering 4, 5, 6, pp. Capability unit uses of the soils, 88 through 109. Woodland suitability group tables Wildlife suitability group symbol Mapping unit page Symbol Page Number Page :dumber Page A£A Altavista fine sandy loam, 0 to 4 percent slopes- 9 IIw-1 67 4 79 1 85 AgB Appling gravelly sandy loam, 2 to 6 percent slopes----------------------------------------- 9 1Ie-1 66 5 79 1 85 AgB2 Appling gravelly sandy loam, 2 to 6 percent slopes, eroded--------------------------------- 10 IIe-1 66 5 79 1 85 AgC Appling gravelly sandy loan, 6 to 10 percent slopes----------------------------------------- 10 IIIe-1 67 5 79 1 85 AgC2 Appling gravelly sandy loam, 6 to 10 percent slopes, eroded---------------------------------- 10 IIIe-1 67 5 79 1 85 ApB Appling sandy loam, 2 to 6 percent slopes-------- 10 IIe-1 66 5 79 1 85 ApB2 Appling sandy loam, 2 to 6 percent slopes, eroded------------------------------------------ 11 IIe-1 66 5 79 1 85 ApC Appling sandy loam, 6 to 10 percent slopes------- 11 IIIe-1 67 5 79 1 85 ApC2 Appling sandy loam, 6 to 10 percent slopes, eroded----------------------------------------- 11 IIIe-1 67 5 79 1 85 ApD Appling sandy loam, 10 to 15 percent slopes------ 12 IVe-1 71 5 79 1 85 AsB Appling fine sandy loam, 2 to 6 percent slopes--- 12 IIe-1 66 5 79 1 85 AsB2 Appling fine sandy loam, 2 to 6 percent slopes, eroded----------------------------------------- 12 IIe-1 66 5 79 1 85 AsC Appling fine sandy loam, 6 to 10 percent slopes-- 12 IIIe-1 67 5 79 1 85 AsC2 Appling fine sandy loam, 6 to 10 percent slopes, eroded------------------------------------------ 13 IIIe-1 67 5 79 1 85 Au Augusta fine sandy loam--------------------------- 13 IIIw-2 7C 4 79 2 85 (1/) Borrow area-------------------------------------- 14 (1/) -- 13 83 5 87 Bu Buncombe soils----------------------------------- 14 IVs -1 72 3 79 4 87 CeB Cecil sandy loam, 2 to 6 percent slopes---------- 15 IIe-1 66 5 79 1 85 CeB2 Cecil sandy loam, 2 to 6 percent slopes, eroded-- 15 IIe-1 66 5 79 1 85 CeC Cecil sandy loam, 6 to 10 percent slopes--------- 16 IIIe-1 67 5 79 1 85 CeC2 Cecil sandy loam, 6 to 10 percent slopes, eroded- 16 IIIe-1 67 5 79 1 85 CeD Cecil sandy loam, 10 to 15 percent slopes--------- 16 IVe-1 71 5 79 1 85 CeF Cecil sandy loam, 15 to 45 percent slopes-------- 16 VIe-1 72 5 79 1 85 CgB Cecil gravelly sandy loam, 2 to 6 percent slopes- 16 IIe-1 66 5 79 1 85 CgB2 Cecil gravelly sandy loam, 2 to6percent slopes, eroded------------------------- ----------- 17 IIe-1 66 5 79 1 85 CgC Cecil gravelly sandy loam, 6 to 10 percent slopes----------------------------------------- 17 IIIe-1 67 5 79 1 85 CgC2 Cecil gravelly sandy loam, 6 to 10 percent slopes, eroded--------------------------------- 17 IIIe-1 67 5 79 1 85 C1B3 Cecil clay loam, 2 to 6 percent slopes, severely eroded----------------------------------------- 17 IIIe-2 68 5 79 1 85 C1C3 Cecil clay loam, 6 to 10 percent slopes, severely eroded----------------------------------------- 17 IVe-2 71 5 79 1 85 C1E3 Cecil clay loam, 10 to 20 percent slopes, severely eroded-------------------------------- 18 VIe-2 73 5 79 3- 85 Cm Chewacla soils----�-------------------------------- 18 IIIw-1 70 1 78 2 85 Cn Colfax sandy loam-------------------------------- 19 IIIw-2 70 4 79 2 85 Co Congaree fine sandy loam------------------------- 20 IIw-2 67 1 78 2 85 Cp Congaree silt loam------------------------------- 2C IIw-2 67 1 78 2 85 CrB Creedmoor sandy loam, 2 to 6 percent slopes------ 21 IIe-3 66 11 82 1 85 CrB2 Creedmoor sandy loam, 2 to 6 percent slopes, eroded----------------------------------------- 21 IIIe-3 69 11 82 1 85 CrC Creedmoor sandy loam, 6 to 10 percent slopes----- 22 IIIe-3 69 11 82 1 1 85 GUIDE TO MAPPING UP:ITS--Continued Map symbol Mapping unit CrC2 Creedmoor sandy loam, 6 to 10 percent slopes, eroded----------------------------------------- CrE Creed -moor sandy loam, 10 to 20 percent slopes---- CtB Creedmoor silt loam, 2 to 6 percent slopes------- CtC Creedmocr silt loam, 6 to 10 percent slopes------ DuB Durham loamy sand, 2 to 6 percent slopes--------- DuB2 Durham loamy sand, 2 to 6 percent slopes, eroded- DuC Durham loamy sand, 6 to 10 percent slopes-------- Du:;2 Durham -loamy sand, 6 to 10 percent slopes, eroded----------------------------------------- EnB Enon fine sandy Loam, 2 to 6 percent slopes------ EnB2 Enon fine sandy loam, 2 to 6 percent slopes, eroded----------------------------------------- EnC Enon fire sandy loam, 6 to 10 percent slopes----- EnC2 Enon fine sandy loam, 6 to 10 percent slopes, eroded----------------------------------------- EnD2 Enon fine sandy loam, 10 to 15 percent slopes, eroded------------- --------------------- Fa3 Faceville sandy loam, 2 to 6 percent slopes------ FaE2 Facevill-e sandy loam, 2 to 6 percent slopes, eroded----------------------------------------- FaC2 Faceville sandy loam, 6 to 10 percent slopes, eroded----------------------------------------- GeI3 Georgeville silt loam, 2 to 6 percent slopes----- GeB2 Georgeville silt loam, 2 to 6 percent slopes, eroded----------------------------------------- Gec Georgeville silt loam, 6 to 10 percent slopes---- GeC2 Georgeville silt loam, 6 to 10 percent slopes, eroded----------------------------------------- GeD2 Georgeville silt loam, 10 to 15 percent slopes, eroded----------------------------------------- Go Goldsboro sandy luain ----------------------------- GrB Granville sandy loam, 2 to 6 percent slopes------ GrB2 Granville sandy loam, 2 to 6 percent slopes, eroded----------------------------------------- Grc Granville sandy loam, 6 to 10 percent slopes----- GrC2 Granville sandy loam, 6 tc 10 percent slopes, eroded----------------------------------------- GrD Granville sandy loam, 10 to 15 percent slopes ---- Gu Gullied land ------------------------------------- jje3 Helena sandy loam, 2 to 6 percent slopes--------- IIeB2 Helena sandy loam, 2 to 6 percent slopes, eroded----------------------------------------- I,eC Helena sandy loam, 6 to 10 percent slopes-------- -eC2 Helena sandy ,oain, 6 to 10 percent slopes, eroded----------------------------------------- HeD Helena sandy loam, 10 to 15 percent slopes------- HrB Iierndon silt loam, 2 to 6 percent slopes--------- Hr32 He—)don silt :Loa::, 2 to 6 percent slopes, eroded- ilrC Herndon silt loam, 6 to 10 percent slopes-------- HrC2 Herndon silt loan, 6 to 10 percent slopes, eroded----------------------------------------- Hr-)2 IIerndon silt loam, 10 to 15 percent slopes, eroded----------------------------------------- -IrF Iernden silt loam, 15 to 25 percent slopes------- LdR2 Lloyd loam, 2 to 6 perceiit slopes, eroded-------- LdC2 Lloyd loam, 6 to 10 percent slopes, eroded------- LdD2 Lloyd loam, 10 to 15 percent slopes, eroded------ Lo3 Louisburg loamy sand, 2 to 6 percent slopes------ LDCLouisburg loamy sand, 6 to 10 percent slopes ----- Described on page 22 22 22 23 23 23 24 24 25 25 25 25 26 26 27 27 28 28 28 2 29 29 30 30 31 32 32 3.2 33 33 33 J3 4 34 35 35 35 35 36 36 36 37 37 38 Capability unit Symbol Page IVe-3 VIe-1 Ile -3 IIIe-3 Ile -1 IIe-1 IIIe-I Ille-1 IIe-3 IIe-3 IIIe-3 IIIe-3 IVe-" IIe-1 IIe-I IIIe-1 IIe-2 IIe-2 IIIe-2 IIIe-2 IVe-2 I1w-1 IIe-1 IIe-1 IIIe-1 IIIe-1 IVe-1 VIIe-1 IIe-3 IIIe-3 IIIe-3 IVe-3 IVe-3 IIe-2 IIe-2 IIIe-2 IIIe-2 IVe-2 VIe-1 IIe-2 IIIe-2 IVe-2 IIIe-4 IVe-3 71 72 66 69 66 66 67 67 66 66 69 69 71 66 66 67 66 66 68 68 71 67 66 66 67 67 71 73 66 69 69 71 71 66 66 68 68 71 72 66 68 7l 69 71 Woodland Wildlife suitability suitability group group Plumber. Page I Nu.*:ber Page 11 11 11 11 5 5 5 5 ll 11 11 I1 11 6 6 6 5 5 5 5 5 4 5 5 5 5 5 13 11 11 11 11 11 5 5 5 5 5 5 5 5 5 12 12 82 62 82 82 79 79 79 79 82 82 82 82 82 8o 80 80 79 79 79 79 79 79 79 79 79 79 79 83 82 82 82 82 82 79 79 79 79 79 79 79 79 79 82 82 1 1 1 1 1 1 1 1 1 1 1 1 1 1 l 1 1 1 1 1 1 1 1 1 1 1 15 1 1 1 1 I 1 1 1 7 1 1 1 l 1 4 4 d5 8�5 85 G5 t5 85 85 �5 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 87 85 85 85 85 85 85 85 85 85 85 85 85 85 85 87 87 GUIDE TO MAPPING UNITS --Continued Map Described on Capability unit Woddland suitability group Wildlife suitability group symbol Mapping unit page Symbol Page Number Page Number Page LoD Louisburg loamy sand, 10 to 15 percent slopes---- .<8 VIe-1 72 12 82 4 87 LwB Louisburg-Trdedowee complex, 2 to 6 percent slopes- 38 IIIe-4 69 12 82 4 87 LwB2 Louisburg -Wedowee complex, 2 to 6 percent slopes, eroded---------------------------------- 38 IIIe-4 69 12 82 4 87 LwC LouisburgTraedowee complex, 6 to 10 percent slopes------------------------------------------ 38 IVe-3 71 12 82 4 87 L�.C2 Louisburg -Wedowee complex, 6 to 10 percent slopes, eroded --------------------------------- 39 IVe-3 71 12 82 4 87 Ly Lynchburg sandy loam------------------------------ 40 IIw-1 67 4 79 2 85 Ma Made land---------------------------------------- 40 83 5 87 MdB2 Madison sandy loam, 2 to 6 percent slopes, eroded----------------------------------------- 40 IIe-1 66 5 79 1 85 MdC2 Madison sandy loam, 6 to 10 percent slopes, eroded----------------------------------------- 41 1IIe-1 67 5 79 1 85 MdD2 Madison sandy loam, 10 to 15 percent slopes, eroded------ ----------------------------------------- 41 IVe-1 71 5 79 1 85 MdE2 Madison sandy loam, 15 to 25 percent slopes, eroded----------------------------------------- 41 VIe-1 72 5 79 1 85 Me Mantachie soils---------------------------------- 42 IIIw-2 70 4 79 2 85 MfB Mayodan sandy loam, 2 to 6 percent slopes-------- 43 IIe-1 66 5 79 1 85 MIB2 Mayodan sandy loam, 2 to 6 percent slopes, eroded ----------------------------------------- 43 IIe-1 66 5 79 1 85 MfC Mayodan sandy loam, 6 to 10 percent slopes------- 43 IIIe-1 67 5 79 1 85 MfC2 Mayodan sandy loam, 6 to'10 percent slopes, eroded----------------------------------------- 44 TIIe-1 67 5 79 1 85 MfD2 Mayodan sandy loam, 10 to 15 percent slopes, eroded----------------------------------------- 44 TVe-1 71 5 79 1 85 MfE Mayodan sandy loam, 15 to 25 percent slopes------ 44 Vie -1 72 5 79 1 85 MgB Mayodan gravelly sandy loam, 2 to 6 percent slopes----------------------------------------- 44 Ile -1 66 5 79 1 85 MgB2 Mayodan gravelly sandy loam, 2 to 6 percent slopes, eroded--------------------------------- 44 Ile -1 66 5 79 1 85 MgC Mayodan gravelly sandy loam, 6 to 10 percent slopes----------------------------------------- 45 IIIe-1 67 5 79 1 85 MgC2 Mayodan gravelly sandy loam, 6 to 10 percent slopes, eroded--------------------------------- 45 IIIe-1 67 5 79 1 85 MyB Mayodan silt loam, thin, 2 to 6 percent slopes--- 45 IIe-2 66 5 79 1 85 MyB2 Mayodan silt loam, thin, 2 to 6 percent slopes, eroded----------------------------------------- 45 IIe-2 66 5 79 1 85 MyC Mayodan silt loam, thin, 6 to 10 percent slopes-- 46 IIIe-2 68 5 79 1 85 MyC2 Mayodan silt loam, thin, 6 to 10 percent slopes, eroded------------------------------------------ 46 TIIe-2 68 5 79 1 85 MyD Mayodan silt loam, thin, 10 to 15 percent slopes-- 46 TVe-2 71 5 79 1 85 NoA Norfolk loamy sand, 0 to 2 percent slopes-------- 47 I-1 65 6 80 1 85 NoB Norfolk loamy sand, 2 to 6 percent slopes-------- 47 Ile -1 66 6 80 1 85 NcB2 Norfolk loamy sand, 2 to 6 percent slopes, eroded----------------------------------------- 47 IIe-1 66 6 80 1 85 NcC Norfolk loamy sand, 6 to 10 percent slopes------- 48 IlIe-1 67 6 80 1 85 NoC2 Norfolk loamy sand, 6 to 10 percent slopes, eroded------------------------------------------ 48 IIIe-1 67 6 80 1 85 OrB Orangeburg loamy sand, 2 to 6 percent slopes----- 4g IIe-1 66 6 80 I 1 85 OrB2 Orangeburg loamy sand, 2 to 6 percent slopes, eroded----------------------------------------- 49 IIe-1 66 6 80 1 85 OrC2 Orangeburg loamy sand, 6 to 10 percent slopes, eroded------------------------------------------ 49 IIIe--1 67 6 80 1 85 PkC Pinkston sandy loam, 0 to 10 percent slopes------ 50 TVe-3 71 12 82 4 87 GUIDE TO MAPPING UNITS --Continued Map symbol Mapping unit Described on page Capability unit Woodland suitability group Wildlife suitability group Symbol Page Plumber Page Number Page' PkF Pinkston sandy loam, 10 to 45 percent slopes----- 50 VIIe-1 73 12 82 4 87 Ps Plummer sand------------------------------------- 51 IVw_l 72 8 80 3 87 Ra Rains fine sandy loam---------------------------- 51 IIIw-3 70 7 80 3 87 Ro Roanoke fine sandy loam-------------------------- 52 IVw-1 72 2 78 3 87 S;: Swamp-------------------------------------------- 52 VIIw-1 73 14 84 3 87 VaB Vance sandy loam, 2 to 6 percent slopes---------- 54 IIe-3 66 11 82 1 85 VaB2 Vance sandy loam, 2 to 6 percent slopes, eroded-- 54 IIe-3 66 11 82 1 85 VaC2 Vance sandy loam, 6 to 10 percent slopes, eroded- 54 IIIe-3 69 11 82 1 85 WaA Wagram loamy sand, 0 to 2 percent slopes--------- 55 IIs -1 67 9 81 4 87 WaB viagram loamy sand, 2 to 6 percent slopes--------- 55 IIs -1 67 9 81 4 87 WaC Wagram loamy sand, 6 to 10 percent slopes-------- 56 IIIe-5 69 9 81 LF 87 WUA Wagram-Troup sands, 0 to 4 percent slopes--------- 56 IIIS-1 70 10 81 4 87 Wh Wahee fine sandy loam----------- ------------- 56 IIIw-2 70 4 79 2 85 WkC Wake soils, 2 to 10 percent slopes--------------- 57 IVe-3 71 12 82 L 87 WkE Wake soils, 10 to 25 percent slopes-------------- 57 VIIe-1 73 12 82 4 87 WmB Wedowee sandy loam, 2 to 6 percent slopes-------- 58 lIe-1 66 5 79 1 85 Wm32 Wedowee sandy loam, 2 to 6 percent slopes, eroded----------------------------------------- 58 IIe-1 66 5 79 1 85 WmC Wedowee sandy loam, 6 to 10 percent slopes------- 58 IIIe-1 67 5 79 1 85 WmC2 Wedowee sandy loam, 6 to 10 percent slopes, eroded----------------------------------------- 58 Ille-1 67 5 79 1 85 WmD2 Wedowee sandy loam, 10 to 15 percent slopes, eroded----------------------------------------- 59 IVe-1 71 5 79 1 85 WmE Wedcwee sandy loam, 15 to 25 percent slopes------ 59 VIe-1 72 5 79 1 85 Wn Wehadkee silt loam------------------------------- 60 IVw-1 72 2 78 3 87 Wo Wehadkee and Bibb soils-------------------------- 60 IVw-1 72 2 78 3 87 WSD White Store sandy loam, 2 to 6 percent slopes---- 61 IIe-3 66 11 82 1 85 WsB2 White Store sandy loam, 2 to 6 percent slopes, eroded----------------------------------------- 61 IIIe-3 69 11 82 1 85 WsC White Store sandy loam, 6 to 10 percent slopes--- 61 IIIe-3 69 11 82 1 85 WsC2 White Store sandy loam, 6 to 10 pe -cent slopes, eroded----------------------------------------- 61 IVe-3 71 11 82 1 85 GCSE White Store sandy loam, 10 to 20 percent slopes-- 62 VIe-1 72 11 82 1 S5 WtB White Store silt loam., 2 to 6 percent slopes----- 62 IIe-3 66 11 82 1 &5 WvD3 ?white Store clay loam, 2 to 15 percent slopes, severely eroded-------------------------------- 63 VIe-2 73 11 82 1 85 W:c Wilkes soils, 2 to 10 percent slopes------------- 63 IVe-3 71 12 82 4 87 W1,,E Wilkes soils, 10 to 20 percent slopes------------ 63 VIe-2 73 12 82 4 87 w1 ;f Wilkes soils, 20 to 45 percent slopes------------ 64 VIIe-1 73 12 82 4 87 WxE Wilkes stony soils, 15 to 25 percent slopes------- 64 VIIe-1 73 12 82 4 87 Wy Worsham sandy loam------------------------------- 64 IVw-1 72 2 78 3 87 1/ Identified by its name on the soil map; not assigned to a capability unit. 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