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HomeMy WebLinkAbout20171446 Ver 1_Soil Survey_20171109� Hydric Rating by Map Unit—Macon County, North Carolina � (Macon 308) � 289220 2R9240 2&9260 289280 289300 289320 2 35° 14' 36" N _ - I- I _ �I �� � � � ,�' � _ 4� � , � , � '1 I - � �. f � - � � , � M , �,, � � � � � 35° 14' 29" N � 2&9220 289240 289'Z60 28928� 289300 28x320 289340 3 � ; Map Scale: 1:1,020 if printed on A porhait (8.5" x 11") sheet � Meters � N 0 15 30 60 90 � � 0 45 90 180 270 Map projection: Web Mer�tor Comer coordinates: WGS84 Edge ti6: UTM Zone 17N WGS84 u� Natural Resources Web Soil Survey � Conservation Service National Cooperative Soil Survey � � 89340 2893G0 Q 35° 14' 36" N NS � � ,;, I � _� �� � 289360 3 M m m V � � M � NR C� N N�j M � 35° 14' 29" N 11 /1 /2017 Page 1 of 5 Hydric Rating by Map Unit—Macon County, North Carolina (Macon 308) MAP LEGEND Area of Interest (AOI) Area of Interest (AOI) Soils Soil Rating Polygons � Hydric (100%) � Hydric (66 to 99%) � Hydric (33 to 65%) O Hydric (1 to 32%) � Not Hydric (0%) � Not rated or not available Soil Rating Lines �•y,r Hydric (100%) r r Hydric (66 to 99%) r r Hydric (33 to 65%) r r Hydric (1 to 32%) w:, � Not Hydric (0%) �� Not rated or not available Soil Rating Points � Hydric (100%) 0 Hydric (66 to 99%) 0 Hydric (33 to 65°/a) 0 Hydric (1 to 32%) 0 Not Hydric (0%) 0 Not rated or not available Water Features Streams and Canals Transportation � Rails ,�e Interstate Highways US Routes Major Roads Local Roads Background � Aerial Photography MAP INFORMATION The soil surveys that comprise your AOI were mapped at 1:12,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soi�s that cou�d have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Macon County, North Carolina Survey Area Data: Version 14, Oct 2, 2017 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Jan 12, 2016—Mar 15, 2017 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. uSDn Natural Resources Web Soil Survey 11/1/2017 �' Conservation Service National Cooperative Soil Survey Page 2 of 5 Hydric Rating by Map Unit—Macon County, North Carolina Hydric Rating by Map Unit Map unit symbol Map unit name Rating Acres in AOI Percent of AOI EvD Evard-Cowee complex, 0 0.4 9.3% 15 to 30 percent slopes EvE Evard-Cowee complex, 0 0.3 7.6% 30 to 50 percent slopes ReA Reddies fine sandy 5 2.5 55.7% loam, 0 to 3 percent slopes, frequently flooded SbD Saunook gravelly loam, 0 0.8 17.3% 15 to 30 percent siopes, stony TrF Trimont gravelly loam, 0 0.4 9.9% 50 to 95 percent slopes, stony Totals for Area of Interest 4.4 100.0% Macon 308 U� Natural Resources Web Soil Survey 11/1/2017 � Conservation Service National Cooperative Soil Survey Page 3 of 5 Hydric Rating by Map Unit—Macon County, North Carolina Description This rating indicates the percentage of map units that meets the criteria for hydric soils. Map units are composed of one or more map unit components or soil types, each of which is rated as hydric soil or not hydric. Map units that are made up dominantly of hydric soils may have small areas of minor nonhydric components in the higher positions on the landform, and map units that are made up dominantly of nonhydric soils may have small areas of minor hydric components in the lower positions on the landform. Each map unit is rated based on its respective components and the percentage of each component within the map unit. The thematic map is color coded based on the composition of hydric components. The five color classes are separated as 100 percent hydric components, 66 to 99 percent hydric components, 33 to 65 percent hydric components, 1 to 32 percent hydric components, and less than one percent hydric components. In Web Soil Survey, the Summary by Map Unit table that is displayed below the map pane contains a column named 'Rating'. In this column the percentage of each map unit that is classified as hydric is displayed. Hydric soils are defined by the National Technical Committee for Hydric Soils (NTCHS) as soils that formed under conditions of saturation, flooding, or ponding long enough during the growing season to develop anaerobic conditions in the upper part (Federal Register, 1994). Under natural conditions, these soils are either saturated or inundated long enough during the growing season to support the growth and reproduction of hydrophytic vegetation. The NTCHS definition identifies general soil properties that are associated with wetness. In order to determine whether a specific soil is a hydric soil or nonhydric soil, however, more specific information, such as information about the depth and duration of the water table, is needed. Thus, criteria that identify those estimated soil properties unique to hydric soils have been established (Federal Register, 2002). These criteria are used to identify map unit components that normally are associated with wetlands. The criteria used are selected estimated soil properties that are described in "Soil Taxonomy" (Soil Survey Staff, 1999) and "Keys to Soil Taxonomy" (Soil Survey Staff, 2006) and in the "Soil Survey Manual" (Soil Survey Division Staff, 1993). If soils are wet enough for a long enough period of time to be considered hydric, they should exhibit certain properties that can be easily observed in the field. These visible properties are indicators of hydric soils. The indicators used to make onsite determinations of hydric soils are specified in "Field Indicators of Hydric Soils in the United States" (Hurt and Vasilas, 2006). References: Federal Register. July 13, 1994. Changes in hydric soils of the United States. Federal Register. September 18, 2002. Hydric soils of the United States. Macon 308 UI�Natural Resources Web Soil Survey 11/1/2017 Conservation Service National Cooperative Soil Survey Page 4 of 5 Hydric Rating by Map Unit—Macon County, North Carolina Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric soils in the United States. Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service. U.S. Department of Agriculture Handbook 18. Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for making and interpreting soil surveys. 2nd edition. Natural Resources Conservation Service. U.S. Department of Agriculture Handbook 436. Soil Survey Staff. 2006. Keys to soil taxonomy. 10th edition. U.S. Department of Agriculture, Natural Resources Conservation Service. Rating Options Aggregation Method: Percent Present Component Percent Cutoff.• None Specified Tie-break Rule: Lower Macon 308 UI�7A Natural Resources Web Soil Survey 11/1/2017 Conservation Service National Cooperative Soil Survey Page 5 of 5