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Home My WebLink AboutSW8950109_Historical File_19960320 e5tat¢of North Carolina 9fzpartmfznt of Environmiznt, 'tlfaalth and Natural lgsoarevz Vivigion of Clnvironmszntal Manag mvnt Jamiz6 33.,Hunt,Jr., Gov�zrnor Jonathan 1.filow�m,��er�ztarg -1. Prtzzton fiioward,Jr.,P.e.,Dirizetor March 20, 1996 Ms.Sandra Dail,Interim President Georgetowne Homeowners Association,Inc. Post Office Box 4127 Wilmington,Nordi Carolina 28406 Subject: Permit No. SW8 950109 Georgetown Subdivision High Density Stormwater Project New Hanover County Dear Ms. Dail: The Wilmington Regional Office received the Stormwater Application for Georgetown Subdivision on August 29, 1995,with final information on March 18, 1996. Staff review of the plans and specifications has determined that the project,as proposed, will comply wide die Stormwater Regulations set forth in Title 15A NCAC 21-1.1000. We are forwarding Permit No. SW8 950109 dated March 20, 1996,to Georgetown Homeowners Association,Inc.. This permit shall be effective from the date of issuance until March 20, 2006, and shall be subject to the conditions and limitations as specified therein. Please pay special attention to the Operation and Maintenance requirements in this permit. Failure to establish an adequate system for operation and maintenance of the stormwater management system will result in future compliance problems. If any parts, requirements,or limitations contained in this permit are unacceptable,you have die right to request an ajudicatory hearing upon written request within thirty (30) days following receipt of this permit. This request must be in die form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed wide the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding. If you have any questions, or need additional information concerning this matter, please contact Linda Lewis, or me at (910) 395-3900. Sincerely, Dave Adkins Regional Water Quality Supervisor DA/arl: S:\WQS\STORMWAT\PERMIT\950109.MAR cc: Mark Veenstra,P.E. Alan Golden,New Hannover County Inspections Beth Easley,New Hanover County Soil Erosion Luida Lewis Wilmington Regional Office Central Files P.O.BOX 29535,POzi8b,North Carolina 27626-0535 T¢1¢phomz 919-733-5083"X 919-733-9919 -On equal Opportunity Nffirmativ¢,�etion employ¢r State Stormwater Management Systems Permit No.SW8 950109 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES DIVISION OF ENVIRONMENTAL MANAGEMENT STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules,and Regulations PERMISSION IS HEREBY GRANTED TO Georgetown Homeowners Association, Inc. Georgetown Subdivision New Hanover County FOR THE construction, operation and maintenance of two Detention Ponds in compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the Uormwater rules) and die approved stormwater management plans and specifications and oilier supporting data as attached and on file with. and approved by die Division of Environmental Management and considered a part of dus permit. This permit shall be effective from die date of issuance until March 20, 2006 and shall be subject to die following specified conditions and limitations: I. DESIGN STANDARDS 1.Th is permit is effective only wide respect to the nature and volume of stormwater described in the application and oilier supporting data. A temporary rerouting of a portion of Phase II lots and roads is allowed to be treated in the temporary Phase I pond as shown on die approved plans. Construction of die complete 2 pond system must be completed prior to construction beyond die approved Phase I plans. 2.Thus stormwater system has been approved for die management of stormwater runoff as described on page 3 of this permit,die Project Data Sheet. 3.Approved plans and specifications for this project are incorporated by reference and are enforceable parts of die permit. DIVISION OF ENVIRONMENTAL MANAGEMENT PROJECT DATA State Stormwater Management Systems Permit No.SW8 950109 Project Name: Georgetowne Subdivision Total build-out Permit Number: 950109 Location: New Hanover County Applicant: Ms. Sandra Dail, Interim President Mailing Address: Georgetown Homeowners Association,Inc. Post Office Box 4127 Wilmington, North Carolina 28406 Application Date: October 11, 1995 Water Body Receiving Stormwater Runoff: Barnard's Creek Classification of Water Body: "C Sw' If Class SA,cliloride sampling results: N/A Pond Depth: 7.5 feet Permanent Pool Elevation: 15.75 MSL Total Impervious Surfaces Allowed: 1,775,118 square feet 112 lots at 5,000 sf per lot and 120 lots at 4,000 sf per lot = 1,040,000 sf Sidewalks = 126,149 sf Recreation Area =35,000 sf Roads =573,969 sf Green Area entering Pond: 4,131,618 square feet Required Surface Area: 47,347 square feet Provided Surface Area: 55,738 square feet Required Storage Volume: 213,811 cubic feet Provided Storage Volume: 283,156 cubic feet Temporary Storage Elevation: 20 MSL Controlling Orifice: 6"pipe DIVISION OF ENVIRONMENTAL MANAGEMENT 9 State Stormwater Management Systems Permit No.SW8 950109 PROJECT DATA Project Name: Georgetowne Subdivision Temporary Routing Permit Number: 950109 Location: New Hanover County Applicant: Ms. Sandra Dail, Interim President Mailing Address: Georgetown Homeowners Association, Inc. Post Office Box 4127 Wilmington,North Carolina 28406 Application Date: October 11, 1995 Water Body Receiving Stormwater Runoff: Barnard's Creek Classification of Water Body: "C SwJ' If Class SA, chloride sampling results: N/A Pond Depth: 7.5 feet Permanent Pool Elevation: 15.75 MSL Total Impervious Surfaces Allowed: 589,000 square feet 60 lots at 5,000 sf per lot = 1,040,000 sf Sidewalks =31,500 sf Recreation Area =35,000 sf Roads = 222,500 sf Green Area entering Pond: 1,769,273 square feet Required Surface Area: 16,496 square feet Provided Surface Area: 35,100 square feet Required Storage Volume: 77,455 cubic feet Provided Storage Volume: 86,412 cubic feet Temporary Storage Elevation: 18 MSL Controlling Orifice: 4"pipe 4.No homeowner/lot owner/developer sliall be allowed to fill in, alter, or pipe any vegetative practices (such as A State Stormwater Management Systems Permit No.SW8 950109 swales) shown on the approved plans as part of the stormwater management system without submitting a revision to die permit and receiving approval from the Division. 5.Each of die lots in the subdivision will be limited to die amount of built-upon area indicated in the supporting calculations and per approved plans. 6.The permittee is responsible for verifying that the proposed built-upon area does not exceed the allowable built-upon area. Once the lot transfer is complete, die built upon area may not be revised without approval from die permittee, and responsibility for meeting the built-upon area limit is transferred to the individual property owner. 7.The following items will require a modification to the permit: a.Any revision to die approved plans,regardless of size. b.Project name change. c.Transfer of ownership. d.Redesign or addition to the approved amount of built-upon area. e.Furdher subdivision of the project area. f.Filling in, altering,or piping of any vegetative conveyance shown on the approved plan. In addition, die Director may determine that other revisions to the project should require a modification to the permit. 8.The Director may notify the permittee when die permitted site does not meet one or more of die minimum requirements of the permit. Within die time frame specified in die notice, die permittee shall submit a written time schedule to die Director for modifying the site to meet minimum requirements. The permittee shall provide copies of revised plans and certification in writing to die Director that die changes have been made. II. SCHEDULE OF COMPLIANCE 1.The permittee will comply with die following schedule for construction and maintenance of the stormwater management system: a.The stormwater management system shall be constructed in it's entirety, vegetated and operational for it's intended use prior to the construction of any built-upon surface except roads. b.During construction, erosion shall be kept to a minimum and any eroded areas of die system will be repaired immediately. 2.The permittee shall at all times provide the operation and maintenance necessary to assure die permitted K ^ State Stormwater Management Systems Permit No.SW8 950109 stormwater system functions at optimum efficiency.The approved Operation and Maintenance Plan must be followed in it's entirety and maintenance must occur at the scheduled intervals including,but not limited to: a.Semiannual scheduled inspections (every 6 months). b.Sediment removal. c.Mowing and revegetation of side slopes. d.Immediate repair of eroded areas. e.Maintenance of side slopes in accordance with approved plans and specifications. £Debris removal and unclogging of outlet structure,orifice device and catch basins and piping. g.Access to the outlet structure must be available at all times. 3.Records of maintenance activities must be kept and made available upon request to authorized personnel of DEM. The records will indicate the date, activity, name of person performing the work and what actions were taken. 4.Deed restrictions must be recorded which limit the built-upon area per lot to the amount as shown on the Project Data Sheet,per Part I#2.The recorded statements must follow die form: a."The allowable built-upon area for lots 1-52, 100-117, 163-180, and 209-232 is 5,000 square feet per lot, lots 53-99, 118-162, and 181-208 is 4,000 square feet,inclusive of that portion of die right-of-way between die lot line and the edge of pavement, structures, pavement, walkways of brick, stone, or slate, but not including open wood decking." b."The covenants pertaining to stormwater regulations may not be changed or deleted without concurrence of the State." c."Alteration of die drainage as shown on die approved plan may not take place without the concurrence of the State." Lots within CAMA's Area of Environmental Concern may be subject to a reduction in their allowable built-upon area due to CAMA regulations. A copy of the recorded deed restrictions must be received in this Office widen 30 days of die date of recording,and prior to the sale of any lot. 5.This permit slhall become voidable unless die facilities are constructed in accordance with die conditions of des permit,die approved plans and specifications,and other supporting data. 6.Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, a certification must be received from an appropriate designer for the system installed certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation. Any deviations from die approved plans and specifications must be noted on die Certification. 7.A copy of die approved plans and specifications shall be maintained on file by die Permittee for a minimum of ten years from the date of die completion of construction. III. GENERAL CONDITIONS State Stormwater Management Systems Permit No.SW8 950109 1.This permit is not transferable. In the event there is a desire for the facilities to change ownership, or there is a name change of the Permittee, a formal permit request must be submitted to the Division of Environmental Management accompanied by an application fee, documentation from the parties involved, and other supporting materials as may be appropriate. The approval of this request will be considered on its merits and may or may not be approved. 2.Fru'lure to abide by the conditions and limitations contained in this permit may subject the Permittee to enforcement action by the Division of Environmental Management, in accordance with North Carolina General Statute 143-215.6(a) to 143-215.6(c). 3.The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances which may be imposed by other government agencies (local, state, and federal) which have jurisdiction. 4.In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, die Permittee shall take immediate corrective action, including those as may be required by this Division, such as die construction of additional or replacement stormwater management systems. 5.The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification,revocation and reissuance or termination does not stay any permit condition. Permit issued this the 20th day of March, 1996. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION ------------------------------------------- A. Preston Howard,Jr., P.E., Director Division of Environmental Management By Authority of the Environmental Management Commission Permit Number SW8 950109 Georgetowne Subdivision Stormwater Project No. 950109 M1 State Stoimwater Management Systems Permit No.SW8 950109 New Hanover County Engineer's Certification I, ----------_____----------, as a duly registered Professional Engineer in the State of Nordi Carolina,having been authorized to observe (periodically/weekly/full time) die construction of die project, ------------------------------------------------------------------------------(Project) for ________________________________(Project Owner) hereby state dhat,to the best of my abilities,due care and diligence was used in die observation of the project construction such that die construction was observed to be built within substantial compliance and intent of the approved plans and specifications. Noted deviations from approved plans and specification: Signature------------------------------------ Registration Number ---____________ Date----------------------------------------- a p �E@MZT ED MAR 18 1996 Mc1[<T"&CREM March 5, 1996 M&C0383.0031(42) ENGINEERS Ms. Linda Lewis SURVEYORS NCDEM/DEM Water Quality Section ARCHITECTS 127 Cardinal Drive Extension Wilmington NC 28406 PLANNERS RE: Georgetowne Subdivision Project No. SW 8 950109 Dear Linda: In response to our phone conversation, we offer the following: 1. We have enclosed two (2) copies of the calculations dated as Revision 8/28/95 which reflects ultimate build out of Georgetowne with 2 ponds in lieu of 3 ponds. If you have any questions or comments feel free to contact us. Sincerely, McKIM & CREED ENGINEERS, P.A. Mark A. Veenstra, P.E. , s� � (� Project Manager �- -4 /bbs D E C PC: Margaret Gray/Landmark MAR 181996 D 243 NORTH FRONT STREET PROD# ® E WILMINGTON,NC 28401 910/343-1048 FAX 910/251-8282 CALCULATION PROJECT PROD.NO. _ CLIENT DATE DES.BY _ SUBJECT CHK,BY -_ REMARKS 47 E C E I V E • Cx MAR 181996 ittztssvtsf�is�� PROJ#=+(L) C> agL�k RO� �S L • '� + S 8 l -4. VP �fs4itssee�►�stts cl ��Mq(lM CALCULATION PROJECT ��" ' i �p dJ•��"� �UBD.yis�oc,l PROJ.NO. Xe CLIENT �^f�� DATE 3-37"SlS a/. SUBJECT G— 1C�G=T �r.�Z S I�� DES.BY 5�� CHK.BY _ .. REMARKS -74 S�o� 73�.5r ✓vt;��sec( G !�cfc� r 4123� A� McKIM&CWMD LO r 1 N y ti zo N Lu V) 0 wa m k Q pp kD 10 %D N O O M M M C- V .-. 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F. a 00r- � in 05 � O xxxxx acc zwz p I-- � � v°Di vaOi 0 F a x a F, u u u E" QrAnvpivpivpsUUQO W ux O M x x x x S a O U O � a ;E >E>E w In�+ O U. QvpiUcnl InUUco G eights of cove' �- G 1�,\ Cc c 4 Table,3 / Aluminum ULTRA FLO 11.UMtNi7.E0 STEEL Type 2 c>r Galvanized Steel ULTRA 1'I.t} HS-20 Live load 115-20 Live Load 14" x Jf4" x 7.112"Corrugation 3�" x 314" x ?-ill"Corrugation • ' umlMaximutn ver(Feet) Co MinimumfMaxImunt Cover(Feet) Diameter Specified Thickness and Cage Specified Thickness and Cage 105") (-135"} Diameter (Inches) (.060") (014 ) 10 064") (.079") (.109") 16 l2 (Inches) (• 16 14 12 18 1.0155 1,0176 t.019G 1.0147 1.065 1.0lL05 18 1,0158 L01138 21 21 1.0f5S 1.4182 24 1.0141 l.Of57 1.0192 1.0151 1.0172 1.0112i 30 1.25133 L.0145 1.0173 24 1.0l57 1.Q197 1.0161 1.0186 30 1.0f41 1��1 I.25138 1.0149 1.0180 3G or�-5 11.51321 1.25152 1.0174 36 1.0129 42 1, __. 1.25165 1.0f41 1.0f69 „.jjg�` 1.5146 42 1.0125 1.0136 1,0160 48 _0... 11.751401 125157 48 1.0f25 1.OF3 S4 15152 54 11.251221 1,25132 60 60 1.25128 1.0148 <2,01 1.75147 66 11.51281 1.25144 ` 50> 12.01431' 66 r" 1 124 1,25140 72 . . 9- 72 ,4,;._..w 78134 78 <1,7512.> 11.51371 S4 - 11'75l341 S.and 61 84 rr- NOTES(rabies 3.4, from top of ptpe to bottom of Oc bta"I" "�<,,�.2:� > i, t All.able minimum mri7 is musured 90 KC 2:Q13 .'y mcnt or top of pipe to top of neid pavr"nL Alinimum co�Cr in unpavtd areas 5" 28> must be mai i unless otherMise shoes n lQ2 2.COc1D17fON I iteststaltal+ons are Alto 3.1 1 P'euies CONDMON II instaltation. 4.< >Requires CONDMON III insuflation S.See-DWAIyATmw section(Page 71 for mare details on CONDMON t.lL a^d III Installadottstructi Its. Oct 6.Tables 3.4.5 and 6 are for t15-�loading only' Cnnsult a COtdrEC Sales Engines* minimu m compacted corer may be needed' for speeiai boding eondhiom Table 6 Table 5 Aluminum ULTRA FLO Pipe Arch Steel ULTRA FLO PiPe-Arch HS-20 Live load tion tiS.20 Live Load 314" x 314"x 7-i12"Con-u 314" x 3f4" x 7-112"Corrugation MinimumlDlaximum Cover(Feet) MinimumfMaximum_Cover(Feel) Equiv.Sp an Rise Specified Thickness and Cagc Equiv. Pipe Pipe Span Rise Specified Thickness and Gag e Dia. (In.) (1a.) (.0 fi0") (.075'1 (.105'3 (110 r� Dia. (In-) (In.) (.064") (.014") (.109 (In.) 16 14 12 (in-) 16 i8 20 16 12 t,0115 1.0115 1.0115 1.0115 18 20 16 l.0l15 t.0115 I.OflS 21 23 19 1015 1.0f15 I.OftS 1.0115 21 23 19 1.0115 1.0115 L0115 24 27 21 .251 l5 1,25fl5 1.0115 1,0115 1.0115 01t5 24 27 21 1.0115 1. 1.0115 1.0!15 1.01I5 1.Oi l5 30 33 2G 1.SOl 15 1 l.0!l5 1.0 1 30 33 26 3G 40 31 e1.75115> 1.501t5 1.25115 1.0115 36 40 31 1.0!!5 1.0l15 l.Of15 42 46 36 1.50115 1.25115 4G 3G M.L.' 1.0►15 41 1.75115 1.25115 42 M.L.4 1.0115 41 (d 54 53 d6 12.01151 1.50115 43 53 �. 1.0115 "-"�` 1.75115 46 54 60 <2:Of1� M60 66 51 .L. 51 1.25115 60 66 NOTES(Tables S and 6 a+1yl Id alto for 4,000 rd comer bearing mess""L 1.The foundation in the comas st+o- It is 15 feet..such is a pew("limitation. y,ptaaimum corer sham for ag pipe 3.Urger siu pipe an:lus are W-lable in a few locations across uie country. 4.Planufcturing Gmiutoun. 5 _ /CALCULATION PROJECT L`'�-� Irv/./,cf $v fj, PROJ.NO. CLIENT M� K- DATE 3-31-9 PjrJ SUBJECT DES.BY H- CWK, BY REMARKS ass 5 5 q 3'5 oo a ZorS &Iz- x .,5 6,0 ov co ( 17-0 ¢avo) :1`60 o0 0 17751t�S' �r S Solo73� ApmcKm&cREm CALCULATION PROJECT cd '�c�dr,1N�- PROJ.NO. Re,, SI� IyS pqv- 7 -15 CLIENTS DATE g� SUBJECT �� I Q �a DES.BY CHK.BY REMARKS -C)k -- �,. lC 7"S S �1 t~TA T L-�1-- 47Z54 ,,= W,cz c _. -,�573 SF 4-r 27-54 Amore, Mq<U\ 1&CZE D CALCULATION PROJECT �7,.�o S r=�o c.�.l o B tw 1 S r c.J PROD.NO. CLIENT DATE L31-SS Rem 5 DES. BY , �,-� F5J• IfZ- SUBJECT \lot o'A� c�,= CHK.BY_ REMARKS 7 '5 /if ,rz - r3.3134 c� Z7 i�z E,-J �Z��415R, 18�C iZ� = g7 9,5 8 c� A�,��C 5 ZZZ(s�SZ G�� SA cl Z Z ST�o�d�� F1.Ir't/ Zo, o RQJ. A-murill McKIM CALCULATION PROJECT F_ �v�.J�- S u L�1�. PROJ.NO. , CLIENT L�� Y.4 k- DATE 3-31-Et R J J r SUBJECT, DES.BY AeM �o~l� ��-�`►W Dc��,�.1 T"►►� CHK.BY REMARKS Tc, elf", C4, CALCULATION PROJECT PROD.NO. CLIENT DATE SUBJECT 11!Z r' �C V y2 V,_.! DES.BY r CHK.BY REMARKS ��--1.��-� .41z�'�- 7/�:zo vt�� `r cam,-!DS = J��J•�'mac, > - �:� i►�E.-�%��L cod I lb-ill i,,]r~D f-`'r �'�-o�f�'�G ZTP-ov p `J Mq�M&� CTZF..ED Quick TR-55 Version: 5 .46 SIN: page 1 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12:13 :16 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION PRE-DEVELOPEMENT 10 YR. STORM >>>> Input Parameters Used to Compute Hydrograph <<<< Subarea -------- ------ - - --* -_ Precip. Runoff - A AREA CN Tc Tt Ia/p Description (acres) (hrs) (hrs) (in) I (in) input/used -�--- P _ �- -------------135 60 55 .0 0.20 -0.40- 4 .70 1 -- 0.$3s _ .35-- 30 ------------------------------------------------------------------------------- * Travel time from subarea outfall to composite watershed outfall point. Total area = 135 .60 acres or 0.2119 sq.mi Peak discharge = 123 cfs >>>> Computer Modifications of Input Parameters <<<<< ______________---- - ---- ---^ _ Input Values Rounded Values Ia/p Subarea Tc * Tt Tc * Tt Interpolated Ia/p Description (hr) (hr) (hr) (hr) (Yes/No) Messages -------------------------------------------------- --__------------------__-__-_ 1 0 .20 0.00 ** ** No -' -----------------------------------------------_------------------------------- * Travel time from subarea outfall to composite watershed outfall point. ** Tc & Tt are available in the hydrograph tables. Quick TR-55 Version: 5.46 SIN: Page 2 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12:13 :16 Watershed file: GTOWN .WSD Hydrograph file: --> GTOWN ,HYD GEORGETOWNE SUBDIVISION PRE-DEVELOPEMENT 10 YR. STORM >>>> Summary of Subarea Times to Peak << Peak Discharge at Time to Peak at Composite Outfall Composite Outfall Subarea (cfs) (hrs) 1 --- -------------- ------------ - -- ----- ---- ---- Composite Watershed 123 12 .2 Quick TR-5S Version: 5 .46 SIN: Page 3 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 :13 :16 Watershed file: --> GTOWN .WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION PRE-DEVELOPEMENT 10 YR. STORM Composite Hydrograph Summary (cfs) --------11 -- --- -- - -12 .0 --12 - Subarea 0 11.3 11.6 11.9 1 12 .2 12 .3 12.4 Description hr hr - ------- -----hr-----hr-----hr------------hr-----hr-----hr hr ----- -- 1 0 0 0 7 32 96 123 87 49 ------------------------------------------------------------------------------- Total (cfs) 0 0 0 7 32 96 123 87 49 ---------------------- ---------------------------------------- -- Subarea 12 .5 12 .6 12 .7 12 .8 13 .0 13 .2 13 .4 13 .6 13 .8 Description hr hr hr hr hr hr hr hr hr ------------------------------------------------------------------------------- 1 35 28 23 19 16 14 13 12 11 ------------------------------------------------------------------------------ Total (cfs) 35 28 23 19 16 14 13 12 11 --- ------ - -- .6 5 0 LL - _. _1 5- Subarea 140 14 3 14 1 15 .5 16 . 0 6 17 .0 17 .5 Description hr hr hr hr hr hr hr hrhr -------------------------------------------------------------- -------- 1 10 9 8 8 7 6 6 5 5 ------------------------------------------------------------------------------- Total (cfs) 10 9 8 8 7 6 6 5 5 --- -r - - Subarea 18 .0 19.0 20 .0 22 .0 26 .0 Description- -------hr-----hr-----hr-----hr hr----- ---- - --------------------- - 1 5 4 4 3 0 ! ---------5 4 -- - -__--_4____ Total (cfs) 3 0 Quick TR-55 Version: 5.46 SIN: Page 4 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12:13 :16 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN .HYD GEORGETOWNE SUBDIVISION PRE-DEVELOPEMENT 10 YR. STORM Time Flow Time Flow (hrs) (cfs) (hrs) (cf s) ----------------- ----------------- 11 .0 0 14.8 8 11.1 0 14.9 8 11.2 0 15.0 8 11.3 0 15.1 8 11.4 0 15 .2 8 11.5 0 15.3 7 11.6 0 15.4 7 11.7 2 15.5 7 11. 8 5 15.6 7 11.9 7 15.7 7 12 .0 32 15.8 6 12 .1 96 15.9 6 12 .2 123 16.0 6 12 .3 87 16.1 6 12 .4 49 16.2 6 12 .5 35 16.3 6 12 .6 28 16.4 6 12 .7 23 16.5 6 12 .8 19 16.6 6 12 .9 18 16.7 6 13 .0 16 16.8 5 13 .1 15 16.9 5 13 .2 14 17 .0 5 13 .3 14 17.1 5 13 .4 13 17 .2 5 13 .5 12 17.3 5 13 .6 12 17.4 5 13 .7 12 17.5 5 13 .8 11 17.6 5 13 .9 10 17. 7 5 14 . 0 10 17.8 5 14.1 10 17 .9 5 14 .2 9 18.0 5 14 .3 9 18.1 5 14 .4 9 18 .2 5 14 .5 8 18 .3 5 14 .6 8 18.4 5 14 .7 8 18 .5 4 Quick TR-55 Version: 5.46 SIN: Page 5 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12:13:16 Watershed file: --> GTOWN .WSD Hydrograph file: GTOWN .HYD GEORGETOWNE SUBDIVISION PRE-DEVELOPEMENT 10 YR. STORM Time Flow Time Flow (hrs) (cfs) (hrs) (cfs) ----- ----------------- 18 .6 4 22.4 3 18 .7 4 22 .5 3 18 . 8 4 22.6 3 18 .9 4 22.7 2 19 .0 4 22.8 2 19 .1 4 22.9 2 19 .2 4 23 .0 2 19 .3 4 23 .1 2 19 .4 4 23 .2 2 19 .5 4 23.3 2 19 . 6 4 23 .4 2 19 . 7 4 23 .5 2 19 . 8 4 23 .6 2 19 .9 4 23 .7 2 20.0 4 23 .8 2 20 .1 4 23 .9 2 20. 2 4 24.0 2 20 . 3 4 24.1 1 20 .4 4 24.2 1 20.5 4 24.3 1 20 .6 4 24.4 1 20 .7 4 24.5 1 20 .8 4 24 .6 1 20 .9 4 24.7 1 21.0 4 24. 8 1 21 .1 3 24.9 1 21.2 3 25.0 1 21.3 3 25 .1 1 21.4 3 25 .2 1 21 .5 3 25. 3 1 21. 6 3 25.4 0 21 .7 3 25 .5 0 21.8 3 25 .6 0 21.9 3 25 .7 0 22 .0 3 25 .8 0 22 .1 3 25 .9 0 22 .2 3 22 .3 3 Quick TR-55 Version: 5 .46 SIN: Page 1 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm,) Executed: 03-10-1995 12:14:25 Watershed file: --, GTOWN-1 WSD Hydrograph file: --> GTOWN-1 .HYD GEORGETOWNE SUBDIVISION POST DEVELOPEMENT 10 YR. STORM ->>>> Input Parameters Used to Compute Hydrograph <<<< ------ ------ � Tt Precip. Runoff I /p ----*- ^--^ .---- ---- a --- Subarea AREA CN T Description (acres) (hrs) (hrs) (in) I (in) input/used _1________________135_ ____ 6fl75_0____ ____ 0.200 __ _004.70__-1 --2.21 - .14 . 10 * Travel time from subarea outfall to composite watershed-outfall-point. - Total area = 135.60 acres or 0.2119 sq.mi Peak discharge 375 cfs >>>> Computer Modifications of Input Parameters <<<<< - - - -- Input Values Rounded Values Ia/p - - -------_ Subarea Tc * Tt Tc * Tt Interpolated Ia/p Description (hr) (hr) (hr) (hr) (Yes/No) Messages ----------------- No -- -------------------------------------------* Travel time from subarea outfall to composite watershed outfall point. ** Tc & Tt are available in the hydrograph tables. Quick TR-SS Version: 5 .46 SIN: Page 2 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 :14:25 Watershed file: -> GTOWN-1 WSD Hydrograph file: --> GTOWN-1 HYD GEORGETOWNE SUBDIVISION POST DEVELOPEMENT 10 YR. STORM >>>> Summary of Subarea Times to Peak «« Peak Discharge at Time to Peak at Composite Outfall Composite Outfall Subarea (cf s) (hrs) -------------- -------------- ------------ 1 375 12.2 ---------------- -------------- ------------ Composite Watershed 375 12 .2 Quick TR-55 Version: 5 .46 SIN: page 3 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12:14:25 Watershed file: --> GTOWN-1 WSD Hydrograph file: GTOWN-1 HYD GEORGETOWNE SUBDIVISION POST DEVELOPEMENT 10 YR. STORM --- -- _ _Composite Hydrograph Summary (cfs) ---- --------------------- __ Subarea 11.0 11.3 11.6 11.9 12.0---12 .1 12 .2-- 12 .3 12 .4 Description -------hr--r--hr-----hr hr hr hr hr hr hr 1---------------------- ----- -------------189 346 375 ---- ---- ----225-_ -117-- Total (cfs) 11 15 22 98 189 346 375 225 117 -------` r -- - Subarea12 .5 12 .6 12.7 12 .8 13 .0 13 .2 13 .4 13 . 6 -13 .8--Description---` hr hr hr hr hr hr hr hr hr 48 1-------------------------------- -----40 33 29 25 - - ----- ----- ----- ----_23 --- 21 - Total (cfs) 78 60 48 40 33 29 25 23 -21 ----------------- _ _ _ _ _ Subarea 14 .0 14.3 14 .6 15.0 15.5 16.0 16 .5 17 0-- 17 .5 Description - -hr- - hr hr hr hr hr hr hr hr 11 10 1----------------------------------------------13-------- ------ -----9------- - Total (cfs) 19 16 15 14 13 11 10 - 9- --9-- Subarea ---- -------------8------0-- 22-0-- 26 0 ------------------------ --- 18 .0 Description hr hr hr hr hr 1 -- --- - -----8------ 7------ 5------ 6------ 0--------------•- - ----------- .. -- Total (cfs) -�--------8------7------6------6------------------------------------- Quick TR-55 Version: 5.46 SIN: Page 4 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12:14:25 Watershed file: --> GTOWN-1 WSD Hydrograph file: --> GTOWN-1 .HYD GEORGETOWNE SUBDIVISION POST DEVELOPEMENT 10 YR. STORM Time Flow Time Flow (hrs) (c€s) (hrs) (cf s) ----------------- ----------------- 11.0 11 14.8 14 11.1 12 14.9 14 11.2 14 15.0 14 11.3 15 15.1 14 11.4 17 15.2 14 11 .5 20 15.3 13 11 .6 22 15.4 13 11.7 47 15.5 13 11 .8 73 15.6 13 11 .9 98 15.7 12 12.0 189 15.8 12 12 .1 346 15.9 11 12.2 375 16.0 11 12 .3 225 16.1 11 12 .4 117 16.2 11 12 .5 78 16.3 10 12 .6 60 16.4 10 12 .7 48 16.5 10 12 .8 40 16.6 10 12 .9 36 16.7 10 13 .0 33 16.8 9 13 .1 31 16.9 9 13 .2 29 17.0 9 13 .3 27 17.1 9 13 .4 25 17.2 9 13 .5 24 17 .3 9 13 .6 23 17 .4 9 13 .7 22 17.5 9 13 .8 21 17 .6 9 13 .9 20 17.7 9 14 .0 19 17.8 8 14.1 18 17.9 8 14 .2 17 18 .0 8 14.3 16 18.1 8 14 .4 16 18 .2 8 14 .5 15 18.3 8 14 .6 15 18 .4 8 14 .7 15 18 .5 8 Quick TR-55 Version: 5 .46 SIN: Page S TR-55 TABULAR HYDROGRAPH METHOD Type Il Distribution (24 hr. Duration Stormy Executed: 03-10-1995 12 : 14:25 Watershed tile: --> GTOWN-1 WSD Hydrograph file: --> GTOWN-1 .HYD GEORGETOWNE SUBDIVISION POST DEVELOPEMENT 10 YR. STORM Time Flow Time Flow (hrs) ------- (cfs) (hrs) (cfs) 18.6 7 18 .7 7 22 .5 5 18 .8 7 22. 6 5 18 .9 7 22 .7 5 19 .0 7 22 . 8 5 19.1 7 22 .9 5 19.2 7 23 .0 4 19 .3 7 23 .1 4 19.4 7 23 .2 4 19 .5 6 23 .3 4 19.6 6 23 .4 4 19.7 6 23 .5 4 19 .8 6 23 .6 4 19 .9 6 23 .7 3 20.0 6 23 .8 3 20 .1 6 23 .9 3 20.2 6 24 .0 3 20.3 6 24.1 3 20 .4 6 24 .2 3 20 .5 6 24 .3 3 20 .6 6 24 .4 2 20.7 6 24.5 2 20 .8 6 24 .6 2 20.9 6 24.7 2 21.0 6 24 .8 2 21 .1 6 24 .9 2 21.2 6 25 .0 2 21.3 6 25 .1 1 21 .4 6 25 .2 1 21 .5 6 25 . 3 1 21 .6 6 25 .4 1 21 . 7 6 25 .5 1 21 .8 6 25 .6 1 21.9 6 25 .7 0 22 .0 6 25 .8 0 22 .1 6 25.9 0 22 .2 6 22 .3 6 Quick TR-55 Version: 5.46 SIN: page 1 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12:17:55 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN .HYD GEORGETOWNE SUBDIVISION POST-DEVELOPEMENT 10 YR. STORM >>>> Input Parameters Used to Compute Hydrograph <<<< -- ------ - *- - ----- ---- --- Subarea AREA CN Tc Tt Precip Runoff Ia/p Description (acres) (hrs) (hrs) (in) I (in) input/used ------------------------------------------------------------------------------- 1 135.60 75 .0 0.20 0.00 4.70 1 2 .21 .14 .10 -------------------------------------------------------------------------------- * Travel time from subarea outfall to composite watershed outfall point. Total area = 135.60 acres or 0.2119 sq.mi Peak discharge = 375 cfs >>» Computer Modifications of Input Parameters <<<<< - - ---------------------------------- Input Values Rounded Values Ia/p Subarea Tc * Tt Tc * Tt Interpolated Ia/p Description (hr) (hr) (hr) (hr) (Yes/No) Messages 1 ---- ------**------**-------�-No-------------4_--------- 0.00- - --- -------------------------------------------- * Travel time from subarea outfall to composite watershed outfall point. ** Tc & Tt are available in the hydrograph tables. Quick TR-55 Version: 5 .46 SIN: Page 2 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12:17 :55 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN .HYD GEORGETOWNE SUBDIVISION POST-DEVELOPEMENT 10 YR. STORM >>>> Summary of Subarea Times to Peak «<< Peak Discharge at Time to Peak at Composite Outfall Composite Outfall Subarea (cfs) (hrs) -------------- -------------- ------------ 1 375 12.2 -------------- -------------- ------------ Composite Watershed 375 12 .2 Quick TR-55 Version: 5.46 SIN: Page 3 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12:17 :55 Watershed file: --> GTOWN .WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION POST-DEVELOPEMENT 10 YR. STORM Composite Hydrograph Summary (cfs) ---Subarea - ----11 0 11 3 11 6r 11 9 -^12.0-- 12 .1 12 .2 12 .3 12 .4 Description hr hr hr ----hr-----hr_----hr-----hr --r-hr hr ---_- - - 1 11 is ---------------------------------22 346 375 --- ------------------ ---- -^ -------- -- Total (cfs) 11 15 22 98 189 346 375 225 117 -Subarea - ----_12.5 Y12 .6 - 12.7 --12 .8 - --- -- 13 .0 13 .2 134 13 .6 13 .8 Description hr hr hr hr hr hr hr hr hr 1 78 60 48 40 33 23 21 ------------------ ------------ ------------ ------------------- --------- Total (cfs) 78 60 48 40 33 29 25 23 21 --- -^----- ---14 6 15 .0 5. -^- 15 16 .0 -_T -- Subarea 14 .0 14.3 16.5 17.0 17 .5 Description hr hr hr hr hr hr hr hr hr 16 15 14 13 11 10 -------------------------- ----- ----- ------------ ----- ---------------- Total (cfs) 19 16 15 14 13 11 10 9 9 ------------------------------------ Subarea 18 .0 19 .0 20 .0 22.0 26 .0 Description hr hr hr hr hr ---------------------------------------------------------------- --------------- --------------------8------ --------------------------------------------------- Total (cfs) 8 7 6 6 0 Quick TR-55 Version: 5.46 SIN: page 4 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12:17:55 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION POST-DEVELOPEMENT 10 YR. STORM Time Flow Time Flow (hrs) ------- (cfs) (hrs) (cfs) ----------------- 11.0 11 14.8 14 11.1 12 14 .9 14 11.2 14 15.0 14 11.3 15 15 .1 14 11.4 17 15.2 14 11.5 20 15.3 13 11.6 22 15.4 13 11.7 47 15.5 13 11 .8 73 15.6 13 11.9 98 15.7 12 12 .0 189 15.8 12 12 .1 346 15.9 11 12 .2 375 16.0 11 12 .3 225 16.1 11 12 .4 117 16.2 11 12 .5 78 16.3 10 12 .6 60 16.4 10 12 .7 48 16.5 10 12 .8 40 16 .6 10 12 .9 - 36 16.7 10 13 .0 33 16.8 9 13 .1 31 16. 9 9 13 .2 29 17.0 9 13 .3 27 17. 1 9 13 .4 25 17.2 9 13 .5 24 17.3 9 13 .6 23 17 .4 9 13 . 7 22 17 .5 9 13 . 8 21 17 . 6 9 13 .9 20 17 .7 9 14 .0 19 17 . 8 8 14 .1 18 17. 9 8 14 .2 17 18 .0 8 14 .3 16 18 . 1 8 14 .4 16 18.2 s 14 .5 15 18 .3 8 14 .6 15 18 .4 8 14 .7 15 18 . 5 8 Quick TR-55 Version: 5.46 SIN: Page 5 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 : 17 :55 Watershed file: --> GTOWN .WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION POST-DEVELOPEMENT 10 YR. STORM Time Flow Time Flow (hrs) (cfs) (hrs) (cfs) ----------------- ----------------- 18 .6 7 22 .4 5 18.7 7 22 .5 5 18.8 7 22 .6 5 18 .9 7 22 .7 5 19 .0 7 22 .8 5 19 .1 7 22.9 5 19 .2 7 23 .0 4 19 .3 7 23 .1 4 19.4 7 23 .2 4 19 .5 6 23 .3 4 19 .6 6 23 .4 4 19 .7 6 23 .5 4 19 .8 6 23 .6 4 19 .9 6 23 .7 3 20 .0 6 23 .8 3 20 .1 6 23 .9 3 20 .2 6 24.0 3 20 .3 6 24.1 3 20 .4 6 24.2 3 20 .5 6 24.3 3 20 .6 6 24.4 2 20 .7 6 24 .5 2 20 . 8 6 24.6 2 20.9 6 24 .7 2 21 .0 6 24.8 2 21.1 6 24 .9 2 21 .2 6 25 .0 2 21.3 6 25 .1 1 21.4 6 25 .2 1 21 . 5 6 25 .3 1 21 .6 6 25 .4 1 21 .7 6 25 .5 1 21.8 6 25 .6 1 21 . 9 6 25.7 0 22 .0 6 25.8 0 22 .1 6 25 .9 0 22 .2 6 22 .3 6 Quick TR-55 Version: 5.46 SIN: page 1 TR-55 TABULAR HYDROGRA.PH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12:21:58 Watershed file: --> GTOWN .WSD Hydrograph file: --> GTOWN .HYD GEORGETOWNE SUBDIVISION 50 YEAR PEAK DISCHARGE >>>> Input Parameters Used to Compute Hydrograph «« ------------------------------------------------------_-------- Subarea AREA CN Tc * Tt Precip. Runoff Ia/p Description (acres) (hrs) (hrs) (in) I (in) input/used ------------------------------------------------------------------------------- 1 135.60 75 .0 0 .20 0.00 6.40 1 3 .63 .1 . 10 ------------------------------------------------------------------------------- * Travel time from subarea outfall to composite watershed outfall point . Total area = 135.60 acres or 0.2119 sq.mi Peak discharge = 615 cfs >>>> Computer Modifications of Input Parameters <<<<< - - ----- ------- Input Values Rounded Values Ia/p Subarea Tc * Tt Tc * Tt Interpolated Ia/p Description (hr) (hr) (hr) (hr) (Yes/No) Messages ------------------------------------------------------------------------------- 1 0 .20 0.00 ** ** No -- ----------------------------- -----T_------------------------- * Travel time from subarea outfall to composite watershed outfall point . ** Tc & Tt are available in the hydrograph tables. Quick TR-55 Version: 5.46 SIN: Page 2 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12:21:58 Watershed file: --> GTOWN WSD Hydrograph file: - > GTOWN .HYD GEORGETOWNE SUBDIVISION 50 YEAR PEAK DISCHARGE >>>> Summary of Subarea Times to Peak <<<< Peak Discharge at Time to Peak at Composite Outfall Composite Outfall Subarea (cfs) (hrs) -------------- -------------- ------------- 1 615 12 .2 -------------- -------------- ------------ Composite Watershed 615 12.2 Quick TR-55 Version: 5.46 SIN: Page 3 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12:21:58 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN .HYD GEORGETOWNE SUBDIVISION 50 YEAR PEAK DISCHARGE Composite Hydrograph Summary (cfs) Subarea ------11.0 11 -- -- - 1 1 12.2 23 12 . - - 1 - . 3 11. 6 11.9 12.0 2 4 Description -------hr-----hr-----hr- hr hr hr hr hr hr 1 18 24 36 161 310 568 615 370 192 -------------------------- ----- ---- ---- ---- ---- ---- ---- -- Total (cfs) 18 24 36 161 310 568 615 370 192 -- - --- -- - -- - - 13 .6 -- Subarea 12 .5 126 127 12 .8 13.0 13 .2 13 .4 13 .8 Description -------hr-----hr-----hr hr hr hr hr hr hr 66 34 1-----------------128-----98-----78------------54-----47-----42-----38--------- Total (cfs) 128 98 78 66 54 47 42 38 34 Subarea ---14.0 - 14.3 --14. 6-- 15.0- -15.5- 16.0 16.5 17.0- 17 .5- Description hr hr hr hr hr hr hr hr hr 1------------------31-----27------------23-----21---�--18--------------------- - Total (cfs) 31 27 25 23 21 18 16 15 15 ------ - --- - --- - --- - -- ---------------------------- Subarea 180 19.0 20 0 22 .0 260 Description hr hr hr hr hr ------ --- -- - ---- ------ ------ ------------------------- ----- 1 14 12 10 9 0 Total (cfs) --------14------------10------9------0-------------------------- -- Quick TR-55 Version: 5.46 SIN: Page 4 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 :21:58 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION 50 YEAR PEAK DISCHARGE Time Flow Time Flow (hrs) (cfs) (hrs) (cfs) ----------------- ----------------- 11.0 18 14.8 24 11.1 20 14.9 24 11.2 22 15.0 23 11.3 24 15.1 23 11.4 28 15 .2 22 11.5 32 15 .3 22 11.6 36 15 .4 21 11 .7 78 15.5 21 11.8 119 15.6 20 11.9 161 15.7 20 12.0 310 15.8 19 12 .1 568 15.9 19 12 .2 615 16.0 18 12 .3 370 16.1 18 12 .4 192 16.2 17 12 .5 128 16.3 17 12 .6 98 16.4 16 12.7 78 16.5 16 12.8 66 16.6 16 12 .9 60 16.7 16 13 .0 54 16.8 15 13 .1. 50 16.9 15 13 .2 47 17 .0 15 13 .3 44 17 .1 15 13 .4 42 17 .2 15 13 .5 40 17.3 15 13 .6 38 17.4 15 13 .7 36 17.5 15 13 . 8 34 17 .6 15 13 .9 32 17 .7 15 14 .0 31 17 . 8 14 14 .1 30 17.9 14 14 .2 28 18.0 14 14 .3 27 18 .1 14 14.4 26 18 .2 14 14.5 26 18.3 13 14 .6 25 18.4 13 14.7 24 18.5 13 Quick TR-55 Version: 5.46 SIN: Page 5 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12:21:58 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN .HYD, GEORGETOWNE SUBDIVISION 50 YEAR PEAK DISCHARGE Time Flow Time Flow (hrs) (cf s) (hrs) (cf s) ----------------- ----------------- 18.6 13 22 .4 8 18.7 13 22 .5 8 18 .8 12 22.6 8 18.9 12 22 .7 7 19.0 12 22.8 7 19.1 12 22.9 7 19.2 12 23 .0 7 19.3 11 23 .1 7 19 .4 11 23 .2 6 19 .5 11 23 .3 6 19.6 11 23 .4 6 19.7 11 23 .5 6 19.8 10 23 .6 5 19.9 10 23 .7 5 20.0 10 23 .8 5 20.1 10 23 .9 5 20.2 10 24.0 4 20 .3 10 24.1 4 20 .4 10 24 .2 4 20 .5 10 24.3 4 20. 6 10 24.4 4 20 .7 10 24.5 3 20. 8 10 24.6 3 20.9 10 24 .7 3 21.0 10 24.8 3 21.1 9 24.9 2 21 .2 9 25.0 2 21.3 9 25.1 2 21.4 9 25.2 2 21.5 9 25.3 2 21.6 9 25.4 1 21.7 9 25.5 1 21.8 9 25. 6 1 21.9 9 25.7 1 22 .0 9 25.8 0 22 .1 9 25.9 0 22 .2 9 22 .3 8 POND-2 Version: 5 .17 SIN: Page 1 EXECUTED: 06-08-1995 14:14:26 ***************************** * * GEORGETOWNE SUBDIVISION * STAGE STORAGE * * * ***************************** Inflow Hydrograph: GTOWN-1 HYD Rating Table file: GTOWN PND ----INITIAL CONDITIONS---- Elevation = 15.75 ft Outflow - 0.00 cfs Storage = 1.12 ac-ft INTERMEDIATE ROUTING GIVEN POND DATA COMPUTATIONS - ELEVATION OUTFLOW STORAGE 2S/t - 2S/t + 0 (ft) (cfs) (ac-ft) (cfs) (cfs) --------- --------- ---------- --------- 15 .75 0.0 1 .120 271.0 271.0 16.00 0.0 2 .350 568.7 568.7 17 . 00 0.0 3 .700 895.4 895.4 18 . 00 0.0 5 .170 1251.1 1251.1 19. 00 0.0 6.750 1633 .5 1633 .5 20.00 78 .0 8.470 2049.7 2127.7 21.00 86.0 10 .310 2495.0 2581.0 22 .00 93.0 12.290 2974.2 3067.2 23 . 00 100.0 14 .410 3487.2 3587 .2 23 .50 103 .0 15.520 3755.8 3858 .8 Time increment (t) = 0 .100 hrs. POND-2 Version: 5 .17 SIN: Page 2 EXECUTED: 06-08-1995 14:14 :26 Pond File: GTOWN .PND Inflow Hydrograph: GTOWN-1 .HYD Outflow Hydrograph: GTOWN .HYD INFLOW HYDROGRAPH ROUTING COMPUTATIONS TIME INFLOW I1+I2 --- - - - 2S/t - 0 2S/t + 0 OUTFLOW ELEVATION (hrs) - -- (cfs) - (cfs) -- --- (cfs) (cfs) (cfs) (ft) ----- ----------- --------- --------- 11.000 11.00 - 271.0 271.0 0.00 15.75 11.100 12.00 -23 .0 294.0 294.0 0 .00 15.77 11.200 14.00 26.0 320 .0 320 . 0 0.00 15.79 11.300 15.00 29.0 349 .0 349.0 0.00 15.82 11.400 17.00 32 .0 381.0 381. 0 0.00 15.84 11.500 20 .00 37.0 418.0 418 .0 0 .00 15 .87 11.600 22.00 42 . 0 460 .0 460 . 0 0 .00 15.91 11.700 47.00 69 .0 529.0 529 .0 0 .00 15.97 11.800 73 .00 120.0 649.0 649.0 0.00 16.25 11.900 98.00 171.0 820.0 820.0 0.00 16.77 1.2.000 189.00 287.0 1107.0 1107.0 0.00 17.59 12 .100 346. 00 535.0 1639.3 1642 .0 1.35 19.02 12.200 375. 00 721.0 2196.1 2360 .3 82 .11 20.51 12.300 225.00 600.0 261.7.9 2796.1 89.10 21.44 12 .400 117.00 342.0 2777.0 29S9 .9 91.46 21.78 12 .500 78. 00 195.0 2788.8 2972 . 0 91.63 21.80 12 .600 60.00 138 .0 2744.8 2926.8 90.98 21.71 12 .700 48 .00 108.0 2673 .0 2852.8 89.91 21.56 12 .800 40 .00 88.0 2583 .8 2761.0 88 .59 21.37 12-900 36.00 76.0 2485.5 2659 .8 87.13 21.16 13 .000 33. 00 69.0 2383 .5 2554.5 85.53 20.94 13 .100 31.00 64.0 2280.2 2447.5 83.64 20.71 13 .200 29.00 60.0 2176.7 2340.2 81.75 20.47 13 .300 27.00 56.0 2073 .0 2232 .7 79 .85 20.23 13 .400 25.00 52.0 1969.9 2125 .0 77.56 19.99 13 .500 24. 00 49.0 1897.2 2018 . 9 60 .82 19.78 13 .600 23 .00 47.0 1846.1 1944.2 49.04 19 .63 13 .700 22. 00 45.0 1809.8 1891. 1 40.66 19.52 13 .800 21.00 43 .0 1783 .6 1852 .8 34.61 19.44 13 .900 20.00 41. 0- 1764.3 1824.6 30 .16 19.39 14.000 19.00 39.0 1749 .7 1803 .3 26.79 19.34 14.100 18 .00 37. 0 1738.3 1786. 7 24 .18 19.31 14.200 17. 00 35.0 1729 .2 1773 . 3 22 .07 19.28 14.300 16.00 33 .0 1721.6 1762. 2 20 .31 19.26 14.400 16. 00 32.0 1715 .7 1753 . 6 18.95 19.24 14.500 15.00 31.0 1711. 0 1746. 7 17.86 19.23 14.600 15.00 30.0 1707 .0 1741.0 16 .96 19.22 14 .700 15 .00 30.0 1704 .4 1737 .0 16 .34 19.21 14 .800 14.00 29.0 1701.8 1733 .4 15 .76 19.20 14 . 900 14.00 28 .0 1699.4 1729 . 8 15 .20 19.19 15 .000 14.00 28 .0 1697 .8 1727.4 14 .82 19.19 15 .100 14.00 28 .0 1696.7 1725 . 8 14.56 19.19 15.200 14.00 28.0 1695.9 1724 .7 14 .39 19 .18 15 .300 13 .00 27.0 1694.7 1722 .9 14.11 19.18 15.400 13 .00 ----26.0- 1693 .2 1720 .7 13 .76 19 .18 ----- POND-2 Version: 5 .17 SIN: Page 3 EXECUTED: 06-08-1995 14:14:26 Pond File: GTOWN .PND Inflow Hydrograph: GTOWN-1 HYD Outflow Hydrograph: GTOWN .HYD INFLOW HYDROGRAPH ROUTING COMPUTATIONS ------------------ ------------------------------------------------------ TIME INFLOW II+I2 2S/t - 0 2S/t + 0 OUTFLOW ELEVATION (hrs) (cfs) (cfs) (cfs) (cfs) (cfs) (ft) -------- --------- --------- ------------ ----------- --------- --------- 15.500 13 .00 26.0 1692.1 1719 .2 13.52 19 .17 15 .600 13 .00 26.0 1691.4 1718.1 13 .35 19.17 15 .700 12 .00 25.0 1690 .2 1716.4 13 .08 19.17 15 .800 12 .00 24.0 1688 . 8 1714 . 2 12 .74 19.16 15 .900 11.00 23 .0 1687 .1 1711. 8 12.35 19. 16 16.000 11.00 22 .0 1685 .2 1709. 1 11.92 19.15 16 .100 11.00 22.0 1683 .9 1707 .2 11.63 19.15 16 .200 11.00 22 . 0 1683 .1 1705.9 11.43 19.15 16.300 10.00 21.0 1681 . 8 1704 .1 11.14 19. 14 16.400 10.00 20 .0 1680 .2 1701.8 10. 78 19.14 16.500 10.00 20.0 1679.2 1700 .2 10.53 19 .14 16.600 10. 00 20 .0 1678 .4 1699.2 10.36 19 .13 16 .700 10.00 20 .0 1677 .9 1698 .4 10.25 19.13 16.800 9.00 19.0 1676.9 1696 .9 10.01 19 .13 16.900 9 .00 18 .0 1675 .5 1694.9 9.69 19.12 17 .000 9 .00 18 .0 1674.6 1693 .5 9.47 19.12 17.100 9 .00 18 .0 1673 .9 1692 .6 9 .32 19.12 17 .200 9.00 18.0 1673 .5 1691.9 9.22 19 .12 17 .300 9.00 18.0 1673 .2 1691.5 9.15 19.12 17.400 9.00 18.0 1673 .0 1691.2 9.10 19.12 17.500 9.00 18 .0 1672 .8 1691.0 9 .07 19.12 17.600 9.00 18 .0 1672.7 1690.8 9 .05 19.12 17.700 9 .00 18.0 1672.7 1690.7 9.03 19 .12 17 .800 8.00 17.0 1671.9 1689.7 8 .87 19 .11 17 .900 8.00 16.0 1670 .8 1687.9 8.59 19.11 18 .000 8.00 16.0 1669 .9 1686.8 8 .41 19. 11 18 .100 8.00 16.0 1669.4 1685.9 8 .28 19 .11 18 .200 8.00 16 .0 1669 .0 1685 .4 8.19 19 .10 18.300 8.00 16 .0 1668 .8 1685 .0 8.13 19.10 18.400 8 .00 16 .0- 1668 .6 1684.8 8 .09 19.10 18 .500 8 .00 16.0 1668.5 1684.6 8 .06 19.10 18 .600 7.00 15 .0 1667.7 1683 .5 7 . 88 19 .10 18 .700 7.00 14.0 1666 .5 1681.7 7 . 60 19.10 18 .800 7.00 14 .0 1665 .6 1680.5 7 .41 19 .10 18 .900 7.00 14 .0 1665 .1 1679 .6 7 .28 19 .09 19 .000 7.00 14.0 1664 .7 1679 .1 7 .19 19.09 19 .100 7 .00 14.0 1664 .4 1678 .7 7 .13 19.09 19 .200 7.00 14 . 0 1664 .2 1678.4 7 .09 19 .09 19 .300, 7.00 14.0 1664 .1 1678 .2 7 . 06 19 .09 19 .400 7.00 14.0 1664 .0 1678 . 1 7 .04 19.09 19 .500 6.00 13 .0 1663 .3 1677.0 6 .87 19.09 19 .600 6.00 12 .0 1662 .1 1675.3 6 .60 19.08 19 .700 6.00 12.0 1661.3 1674 .1 6.41 19.08 19 . 800 6.00 12 .0 1660 .7 1673 .3 6.28 19.08 19 . 900 6.00 12 .0 1660.3 1672 .7 6.19 19.08 20.000 6.00 12.0 1660.1 1672 .3 6.13 19.08 POND-2 Version: 5 .17 SIN: Page 4 EXECUTED: 06-08-1995 14:14 :26 Pond File: GTOWN PND Inflow Hydrograph: GTOWN-1 .HYD Outflow Hydrograph: GTOWN .HYD INFLOW HYDROGRAPH ROUTING COMPUTATIONS -- ------------------------------------- - TIME INFLOW I1+I2 2S/t - O 2S/t + 0 OUTFLOW ELEVATION (hrs) -- (cfs) -- -- (cfs) -- ---_ (cfs) (cfs) (cfs) (ft) ------ ----------- --------- --------- 20.100 6.00 12 .0 1659.9 1672.1 6.09 19.08 20.200 6.00 12. 0 1659.8 1671.9 6.06 19.08 20 .300 6.00 12 .0 1659.7 1671.8 6 .04 19 .08 20 .400 6.00 12.0 1659.6 1671.7 6 .03 19.08 20 .500 6.00 12 .0 1659.6 1671.6 6 .02 19 .08 20 .600 6.00 12 .0 1659.6 1671.6 6 .01 19.08 20 .700 6.00 12.0 1659. 6 1671. 6 6. 01 19.08 20 .800 6.00 12 .0 1659.5 1671.6 6.01 19.08 20.900 6. 00 12.0 1659.5 1671 .5 6.00 19.08 21.000 6.00 12.0 1659 .5 1671.5 6.00 19.08 21.100 6.00 12.0 1659 .5 1671.5 6.00 19.08 21.200 6.00 12 .0 1659 .5 16'71.5 6.00 19.08 21.300 6.00 12 .0 1659.5 1671.5 6.00 19.08 21.400 6.00 12.0 1659 .5 1671.5 6.00 19.08 21.500 6.00 12.0 1659 .5 1671.5 6.00 19.08 21.600 6.00 12 .0 1659 .5 1671.5 6 .00 19.08 21.700 6.00 12.0 1659 .5 1671.5 6.00 19.08 21.800 6. 00 12.0 1659.5 1671.S 6.00 19.08 21.900 6. 00 12 .0 1659.5 1671.5 6.00 19.08 22.000 6.00 12.0 1659.5 1671.5 6.00 19.08 22 .100 6 . 00 12.0 1659.5 1671.5 6.00 19.08 22 .200 6.00 12.0 1659.5 1671.5 6.00 19.08 22.300 6. 00 12 .0 1659.5 1671 .5 6.00 19.08 22 .400 5. 00 11.0 1658.8 1670.5 5.84 19.07 22 .500 5.00 10 .0 1657.7 1668 .8 5.58 19.07 22 .600 5. 00 10.0 1656 .9 1667. 7 5.39 19.07 22 .700 5. 00 10.0 1656.4 1666.9 5 .27 19.07 22 .800 5 .00 10.0 1656. 0 1666.4 5. 18 19.07 22.900 5 . 00 10.0 1655.7 1666.0 5.13 19.07 23 .000 4.00 9.01 1654 .9 1664 .7 4.93 19.06 23 .100 4 .00 8 .0 1653 .6 1662 .9 4 .64 19.06 23 .200 4 .00 8.0 1652.7 1661.6 4 .43 19 .06 23 .300 4.00 8.0 1652 .1 1660.7 4.30 19.06 23 .400 4.00 8.0 1651.7 1660.1 4.20 19.05 23 .500 4.00 8.0 1651.5 1659 .7 4.14 19.05 23 .600 4.00 8 .0 1651.3 1659.5 4. 10 19.05 23 .700 3 .00 7.0 1650 .4 1658.3 3.91 19 .05 23 .800 3 . 00 6.0 1649 .2 1656 .4 3 .62 19 .05 23 .900 3:00 6. 0 1648 .4 1655 . 2 3 .43 19 .04 24 .000 3 .00 6.0 1647 .8 1654 .4 3 .29 19.04 24 .100 3 .00 6.0 1647.4 1653 .8 3 .20 19 .04 24.200 3 .00 6.0 1647.1 1653 .4 3 .14 19 .04 24.300 3 .00 6.0 1646.9 1653 .1 3 .09 19.04 24.400 2 .00 5.0 1646.1 1651. 9 2 .91 19. 04 24.500 2 .00 4. 0 1644.9 1650 .1 2 . 62 19.03 24.600 2 .00 4.0 1644.0 1648 . 9 2 .42 19.03 POND-2 Version: 5 .17 SIN: Page 5 EXECUTED: 06-08-1995 14:14:26 Pond File: GTOWN .PND Inflow Hydrograph: GTOWN-1 .HYD Outflow Hydrograph: GTOWN .HYD INFLOW HYDROGRAPH ROUTING COMPUTATIONS TIME ----INFLOW - - - I1+12 2S/t - 0 2S/t + 0 OUTFLOW ELEVATION (hrs) (cfs) (cfs) (cfs) (cfs) (cfs) (ft) -------- --------- --------- ------------ ----------- --------- --------- 24.700 2 .00 4.0 1643 .4 1648.0 2.29 19 .03 24.800 2 .00 4. 0 1643 .0 1647.4 2 .20 19.03 24.900 2 .00 4.0 1642. 8 1647.0 2 .14 19.03 25.000 2 .00 4.0 1642.6 1646.8 2 .09 19 .03 25.100 1.00 3 .0 1641.8 1645.6 1.91 19.02 25 .200 1. 00 2.0 1640.5 1643 . 8 1.62 19 .02 25 .300 1.00 2 .0 1639.7 1642.5 1.42 19 .02 25 .400 1.00 2 .0 1639.1 1641.7 1.29 19 .02 25 .500 1.00 2 .0 1638.7 1641.1 1.20 19 .02 25 .600 1.00 2 .0 1638 .4 1640.7 1.14 19 .01 25 .700 0.00 1.0 1637.6 1639.4 0 .94 19.01 25 .800 0.00 0 .0 1636.3 1637. 6 0 .64 19.01 25 .900 0 .00 0.0 1635 .4 1636 .3 0.44 19.01 I 1 POND-2 Version: 5 .17 SIN: Page 6 EXECUTED: 06-08-1995 14:14:26 ****************** SUMMARY OF ROUTING COMPUTATIONS ****************** Pond File: GTOWN PND Inflow Hydrograph: GTOWN-1 .HYD Outflow Hydrograph: GTOWN HYD Starting Pond W.S. Elevation = 15 .75 ft ***** Summary of Peak Outflow and Peak Elevation ***** Peak Inflow - 375 .00 cfs Peak Outflow - 91.63 cfs Peak Elevation = 21.80 ft ***** Summary of Approximate Peak Storage ***** Initial Storage = 1.12 ac-ft Peak Storage From Storm = 10.78 ac-ft --------------- Total Storage in Pond = 11.90 ac-ft Warning: Inflow hydrograph truncated on left side. POND-2 Version: 5.17 SIN: Page 7 Pond File: GTOWN .PND Inflow Hydrograph: GTOWN-1 .HYD Outflow Hydrograph: GTOWN HYD EXECUTED: 06-08-1995 Peak Inflow = 375.00 cfs 14:14.:26 Peak Outflow = 91.63 cfs Peak Elevation = 21.80 ft Flow (cfs) 0 40 80 120 160 200 240 280-r-320-'-360 400-^{440 11 .4 - x x 11.5 - x x 11.6 - x x 11 .7 - x x 11 . 8 - x x 11. 9 - x x 12 . 0 - x * x * 12 . 1 - x * x * 12 .2 - x * x 12 .3 - x x 12 .4 - x x* 12 .5 - * x * x 12 . 6 - * x * x 12 .7 - * x * x 12 . 8 - * x * x 12 . 9 - * x * x 13 .0 - * x * x 13 . 1 - * x * x 13 . 2 - * x * x 13 . 3 - * x TIME (hrs) * File: GTOWN-1 HYD Qmax = 375 .0 cfs x File: GTOWN HYD Qmax = 91 .6 c f s ,qu rl"L CALCULATION PROJECT PROJ.NO. CLIENT DATE - Q g.5 SUBJECT_ dr DES.BY ffsr�l CHK.BY f REMARKS 1.5 _ )C4g)N/2)63Z.zy'- ,.g , r '�-ice + V 6 = 9G A, mcKm&cREm Circular Channel Analysis & Design Solved with Manning' s Equation Open Channel Uniform flow Worksheet Name: GEORGETOWNE Comment: SHAFT SPILLWAY Solve For Actual Discharge Given Input Data: Diameter. . . . . . . . . . 3 .50 ft Slope . . . . . . . . . . . . . 0.0057 ft/ft Manning' s n. . . . . . . 0.012 Depth. . . . . . . . . . . . . 3 .50 ft Computed Results: Discharge. . . . . . . . . 82.29 cfs velocity. . . . . . . . . . 8.55 fps Flow Area. . . . . . . 9. 62 sf Critical Depth. . . . 2 .83 ft Critical Slope. . . . 0 .0058 ft/ft Percent Full. . . . . . 100.00 ?1- Full Capacity. . _ 82.29 cfs QMAX @.94D. . . . . . . . 88 .52 cfs Froude Number. . . . . FULL Open Channel Flow Module, Version 3 .42 (c) 1991 Haestad Methods, Inc. * 37 Brookside Rd Waterbury, Ct 06708 i; CALCULATION PROJECT ` - r kl' ,tea t>,rVi.S ld:-. PROJ.NO. CIJENT DATE /7-4 SUBJECT -aZ �� p' �.�/.EG7ip�,1 DES, BY CHK,BY -- - -'- REMARKS r-4ro_J1. f—_ M� cQM& CALCULATION PROJECT �s `'��'=�Bw,✓ Sv$D�d�9ro.�t PROJ.NO. CLIENT L�..'r� �ZtG DATE SUBJECT 1 a �Q q t��t� two-'+> DES.BY CHK.BY REMARKS 3I r _ 5 •4 5)(07. �� 7-2.4 r5 .4 5 3 S� - 7. S 5 44 45��. �r) - q q. ors " McKIM&CREHD CALCULATION PROJECT GG p lrn/..f,J,r: $J r3 i�iJ ��c./ PROD.NO. CLIENT pl''t DATE SUBJECT_ �-f r?s2 •�G�� 5 rGG i,�Idr/ DES.BY J� CHK.BY REMARKS L - cl� - Jli (—ly �-� 7 ��'4��.:�.3�) - l�o• � Gam. 5 o �% MM& J CALCULATION PROJECT �7�o Ei a!./iJt S v 5D PROJ.NO. CLIENT ��M,G�� I DATE SUBJECT .�1-•f ��Lr�-�G+T/ SrGL�d.b�/ DES.BY Z�Z CHK.BY REMARKS 50 C7. 7 G1,C.4 S)Cz 8", 3 3) L - Q Mq<I M&CREED 0'6 91 —H Ivo IN F. P_ S' o LA o 1 1 ! I I t t t ■.1 000, Q CA CO. ! r 1 t O 1 1 1 t 1 1 � CA -rf � 1 1 t s ' cri t t r t m -- — -- — ---,-- --r-- --T-- s r 1 z m N r 1 O oz trs ----- -- -- -- r - 1 - - s - D 1 1 t r t 1 0 O 20 � x O A Z Z p rz zt r C ZONE d - tn z [— C) EN H N z ^�lJf to In N v1 en In v 9 'O 1 Z D z8 o mm Q -r r a r S R p rn • c 5 S 5 S 5 5 ^ R 1� o < R � Cn Z .o 0 o w o .o z a g av b a� (n Q . -4 3 ti c c i n 4 � rn y .r 4 o ^x O Cd z p 0 0 p Q A s o � � '� o 0 0 0 0 0 'cl � 1 s> v P. 0 ; La — VJ rJ O a Co a . pro ., C n t7 v r r ■ r r 1^'�?J �LJ 0 O O p� •� ny 1W 6-1 Diameter of Stone In lnch" O- r_ v c m a � � o y• v v A � 6 S w � G s • �• 3 : 3 N g $ CD --� S^ Q c S 0.�c Oa ..- UV a�C.r 7� •� G O o T c a m m 0 � 1 1 ( ( , t 1 I l i t t OOaO = a i � I � c• es Weight of Stone at 165 lbs. / w- ft_ cn . 3 acmN tb o4 w. 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CLIENT DATE SUBJECT-32 "y j' /�nZ L, :5AH 424 DES,BY CHK.BY -- 4 4 _ , REMARKS f{ 2d 7-4 - /(ocv 1-- - 1-2-> �7xz = 2� 3 5 S5 7, 7Ss�� M 1 CALCULATION PROJECT � 5 �d -y►:5/cad PROJ.NO. CLIENT Ldr h�M�� DATE -Z2-17 SUBJECT C?v'r"GG�r�i �' �G7 DES.BY CHK.BY REMARKS 242,.1 g X,,5 -- u 5 z4 'x o-- f A?��J �=- 7. 78 .Za J!; x T--l' f� x .3 05 E�- t8rxlo� lf��o,1 MCK(M CALCULATION PROJECT PROJ.NO. CLIENT DATE �r SUBJECT _P4 Gccx�7"G�7" or-Sf��rf7r DES.BY CHK.BY REMARKS dd { _ i3- ��s G MCKIM CALCULATION PROJECT GT� -� G'�•/•J� SvPb,✓�S�o,..� PROJ.NO. CLIENT �raf`'Ed�� DATE DES.BY F r SUBJECT o J`rZ>✓r �a roc ro,-� G> 5 �! Sri A� CHK.BY ovrL� REMARKS ID, J 8 � 3•� � zg vacs x _Tv,.J5 Jieh Mq<U\4&CREHD CALCULATION PROJECT PROJ.NO. CLIENT f OATE 5)7 SUBJECT -�sM C tom. 5 r c 11,J�' DES.BY CHK.BY REMARKS f�cl,l/j /GZ_ 5 tzo, 7 Q - /23.5 Gr5 1 Z �S 514- 9-r G15 FoZ. tom. E7"d�L� CALCULATION PROJECT PROD.NO. CLIENT DATE S- SUBJECT ��? U =1�• �r '� �0" DES,BY CHK.BY REMARKS j7., !Z3.5 4-- Zd•? 6z 14�. Z c-r5 144.2 '/s�� 3.ry A?5 ---------------- 71 MqTA&CREED CALCULATION PROJECT PROD.NO. CLIENT DATE — SUBJECT �dKG?. J ,�� DES.BY CHK.BY REMARKS 51 loz� z o. Q 1,73.j c4fS 34.5 ��1-5 A;McKm&cREm CALCULATION PROJECT PROD. NO. CLIENT DATE D SUBJECT ES. BY CHK. BY REMARKS 4. '�' 7S E C E I V E MAR 181996 `9axs.xstetrr° PROD #SR I3 O CARO ss4 t A! A a 4 �B S t /i 8l �`� t �_.e.b•3 a� 7 °t�.rrttsetts�'�� 1\2v�5e� ( q<U\4&CREM CALCULATION PROJECT �'_� ��"1�� SvBb�v�sioti� PROJ.NO. CLIENT Z ^,j DATE 3-3/ ��117 fir_ F_� SUBJECT V• CT G- GTv �0 5�i N� DES.BY CHK. BY REMARKS 76, 7l82:? di�L T�'F4C_ Are, - 5`7.v6 73.6. 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[� N 00 M Wl Vl N M [� -+ M �n w) kn �i vi o c i v v o o o v o N w -1-1 W ¢ Uzi C7 w > vi O � U vqi O -� oN o No UU < o C7 Z W ¢ --+ •--� N N C'I cnO Cx7 •• .• N N N N N N N cl)O O O M M M M M M M z V xi .`ri xi x `.i Z z p M M N to 00 1�001. N a x H O w - - cn U U U t cno U U AAAA - AAAAAUAAAAAA �� u n H H U U cn cn to U &0 cn En V) cn U cn V) cn cn cn cn ju x .a U ¢ N N N N N cn cn O U O O v v v 00 v vNi vMi 0 F-+ w .. .� AAA .. . ., a � � UUU � � � UUUU � U � U � � UUU � � � � �M rn N ` l ti w o ¢ x wNC) w wa H a ¢ N N N N Ni O. 11, 00 W A W W OQ c) mmmmZo0 O O M M M M .o I- M Wa V N N N N N (V d W � > p z pp v'� V V S N 't O N A w z .wi N M � U V) 0 0 0 O O O O O O O ^ W N N N N N N N N N W w H Q z o04 OOOOOooO w aa) x o 0 0 0 0 0 0 0 o woo m A W w w a n. a. a a a a a � N a W p U u u u u u u a a u U U U U U U U U U zv� a I F[I — -- II U w 00 Z a �- x M� O o O O O O O O O ...+ cM M M M M M Cl! C1 M z F z Z .a a c� p z x w x � U v) %D .o .oic" \o .o .o E- v� oOOOOOO wO Z '� U CV N 0 0 .o C7 x ¢ o w > Q 00 0 z W ¢ cn 0 x 0 Ol xxxxx xM :D How Q Q Q Q Q U I U Q O vx a x x x x x x U vi W) W) •• 0 CQ C) — P�. w QQUvnvnv) UUA 1 1 G "&-% hts of cover c4 'fable 3 Aluminum ULTRA FLO LUP1(NI7,ED STEEL Type 2 or Galvanized Steel ULTRA FLO HS-20 Live Load :1 1{S20 Live Load !4" x 314" x 7-112"Corrugation 314" x 314" x 7-112"Corrugation um/Maximum Cover(Feet) Minimum/Maximum Cover(Feet) Diameter Specified Thickness and Gage Specified Thickness and Gage 105") (.135") (inches) (.060") (.075 ) 10 Diameter (inches) (.064'1 (.079") (• 12109") 16 14 12 16 14 18 1-0155 1.0176 1.0168 1.0196 21 1.0147 1.0165 1.01105 18 1.0182 1.01138 1.0157 1-0t92 21 1.0158 1-01121 24 1-0141 1.0151 1.0172 30 1,25133 1-0145 1.0173 24 1-0157 1-0197 1-0186 30 1.0141 152 1.25138 1.01G1 1.0148 1.0180 36 11.51271 1.25152 1.0174 1.0134 c-r 36 1.0141 1.0169 42 <t:75123> (1.513 `- 1.5146 125165 1.0129 42 10 25 1.0136 1.0160 , .fl12a (1.751401 125157 48 1.25132 1.0 53 S4 ^ � 15152 12522] <2:0l3 > 1.75147 x n7 r 54 <, 12528 1.0148 66 0133> 60 `' 11.5261 1.25144 <2 5130>• 12.01431 66 72 2539' <1524`> 1.25140 72 78 <i7 7S 5l22>' 11.51371 < ' 84 (1.75134] and 6) 84 - s�r,, NoTES(Tables 3.6.5. to bottom of flexible pa"e- <2:0l32.�,.. 90 -i}'- 1.Allowable minimum cover is measured from top o Pipe `( of i to top of rigid pavement Minimum corer in unpaved areas <Zi013O ment or top P De 96 mast be maintained. 102 2.CONDITION I installations are allowed unless otherwise sho�n- 3-1 1 Requires CONDITION 11 installation. 4 < > Requires CONDITION III installationfor more decals on CONDITION 1.IL and 5.See—INSTALLATION"section(page Ill Installations. 6 m�mimum compacted toter ma,beneeded ading only-Conwolt a CONTECNr heaVY c Sales lEngineer higher for special loading conditions- Table 6 Table 5 Aluminum ULTRA FLO Pipe-Arch Steel ULTRA FLO Pipe-Arch HS-20 Live Load HS-20 Live Load 314" x 314" x 7-112"Corrugation 314" x 314" x 7-12"Corrugation MinimumlMaximum Cover.(Feet) MinimumlMaximum Cover(Feet) Equiv. Equiv. .pipe Span Rise Specified Thickness and Gagc135") Pie Span Rise Specified Thickness and Gage Dia. (1n.) On-) (.060'1 (.075'1 (-105'1 (- p n.) 079") (.109'1 (In.) 16 12 10 Dia. (in.) � (.064') (• 14 (In.) 16 14 121.0115 1.0115 1G 1-0115 1.0115 1-0115 18 20 16 1.0115 1.0115 1-0115 1.0115 1S 20 21 23 19 1.0115 1.0115 21 23 19 1.0115 1.0115 1-0115 21 1.0f 15 1.0115 1.0115 24 27 21 1.25115 1.0115 1.0115 1.011 24 27 30 33 26 1.50115 1.25115 1.0115 1.0115 115 30 33 2G 1.0115 1.0115 1.01151.25/15 1.0115 1-0115 1.0115 36 40 31 <1.75115>.' 1.50115 150115 1.025115 40 31 42 46 36 36 M L.^ 1.OI15 41 1.75115 1.25115 46 36 1.50115 48 42 53 41 M.L-� 1.0115 48 �60 46 (2.0115j 54 60 4G M.L_` 1.0115 S4 <.2�0115> 1.75115 M.L.` 1.25115 60 66 51 60 66 51 NOTES(Tables 5 and 6 onlpl Pressure- 1.The foundation in the corners should allow(or 4,000 psf corner bearing P for all Pipe-arch is 15 feet.which is a Pract"'imitation- 2'Maximum cover shorn locations across the country. 3.Larger size pipe-arches are available in a(ems' 4.Manufacturing limitation. 5 CALCULATION PROJECT .�' SJR�. PROJ. NO. CLIENT �/J C> DATES i�!FJ SUBJECT 1 h'S Y i oVS �k �1=,�� S DES. BY ' �E� ! g CHK. BY REMARKS 35OO f7 ZvYs C-11 Z X t Zo _X 'A oO D... / 775 )1 -Sr 5 �oL�73� Mq<11\4 _ CALCULATION PROJECT � ��d1��E PROJ.NO. DATE (fie✓ 19 c 6�• 751, CLIENT z SUBJECT DES. BYE_ !/ �� /� ro� pa. CHK. BY REMARKS rd z j--7- Iv` t 47Z,54 ;2 a 7 5�3 -`;r > 4-2z54 s w MCKM& / _CALCULATION PROJECT �Tc�4��"�'�L `» '�'� t St c..1 PROJ. NO. CLIENT L-at..�l t� DATE �- 3 S Re., S II DES. BY ��`� �EJ• �rz�g SUBJECT \{oL-ot-A� or' �J1-I or'r �£J t �9 CHK. BY REMARKS Z-Z z 6,5 Z- F� Rea- ..z,- X a C.L�✓ - Z Z A 2— oL r-- LEJ 15. 75 Rev Ll�V CALCULATION PROJECT �%��_ rvi�,�/ -SUISP. PROJ. NO. CLIENT LA-,J 1-->N(d !� k- DATE -3I- 7 R e / SUBJECT_ �o"aD ►��Dnr.,�.�-� 7►►-5 ..- DES. BY fkd �r�l 14�� CHK. BY REMARKS Q = gJCa4 I U i McKM&CREED CALCULATION PROJECT LLaSC� o%fiJ�% PROJ. NO. CLIENT DATE SUBJECT 1� `I! �C Ll L y�10 fit= DES.BY CHK. BY REMARKS 1 r G�t� - ! y J�l l��✓ fl f- - 25 Ai be i MCK M& Quick TR-55 Version: 5 .46 SIN: Page 1 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 : 13 : 16 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION PRE-DEVELOPEMENT 10 YR. STORM >>>> Input Parameters Used to Compute Hydrograph <<<< --------------------------------------------------------P------------ Subarea AREA CN Tc * Tt Preci Runoff Ia/p Description (acres) (hrs) (hrs) (in) I (in) input/used ---------------------------------------------------- --------------------------- 1 135 . 60 55 . 0 0 .20 0 . 00 4 . 70 1 0 . 83 . 35 .30 ------------------------------------------------------------------------------- * Travel time from subarea outfall to composite watershed outfall point . Total area = 135 . 60 acres or 0 . 2119 sq.mi Peak discharge = 123 cfs >>>> Computer Modifications of Input Parameters <<<<< ------------------------------------------------------------------------------- Input Values Rounded Values Ia/p Subarea Tc * Tt Tc * Tt Interpolated Ia/p Description (hr) (hr) (hr) (hr) (Yes/No) Messages ------------------------------------------------------------------------------- 1 0 . 20 0 . 00 ** ** No -- ------------------------------------------------------------------------------- * Travel time from subarea outfall to composite watershed outfall point . ** Tc & Tt are available in the hydrograph tables . Quick TR-SS Version: 5 .46 SIN: Page 2 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 :13 :16 Watershed file: --> GTOWN .WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION PRE-DEVELOPEMENT 10 YR. STORM >>>> Summary of Subarea Times to Peak <<<< Peak Discharge at Time to Peak at Composite Outfall Composite Outfall Subarea (cfs) (hrs) -------------- -------------- ------------ 1 123 12 .2 -------------- -------------- ------------ Composite Watershed 123 12 .2 Y Quick TR-55 Version: 5 .46 SIN: Page 3 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 : 13 : 16 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION PRE-DEVELOPEMENT 10 YR. STORM Composite Hydrograph Summary (cfs) ------------------------------------------------------------------------------- Subarea 11 . 0 11 . 3 11 . 6 11 . 9 12 . 0 12 . 1 12 . 2 12 . 3 12 .4 Description hr hr hr hr hr hr hr hr hr ------------------------------------------------------------------------------- 1 0 0 0 7 32 96 123 87 49 ------------------------------------------------------------------------------- Total (cfs) 0 0 0 7 32 96 123 87 49 ------- ------------------------------------------------------------------------ Subarea 12 . 5 12 . 6 12 . 7 12 . 8 13 . 0 13 .2 13 . 4 13 . 6 13 . 8 Description hr hr hr hr hr hr hr hr hr ------------------------------------------------------------------------------- 1 35 28 23 19 16 14 13 12 11 ------------------------------------------------------------------------------- Total (cfs) 35 28 23 19 16 14 13 12 11 ------------------------------------------------------------------------------- Subarea 14 . 0 14 .3 14 . 6 15 . 0 15 .5 16 . 0 16 . 5 17 . 0 17 . 5 Description hr hr hr hr hr hr hr hr hr ---------------------------------------------------------- -------------- ------ - 1 10 9 8 8 7 6 6 5 5 ------------------------------------------------------------------------------- Total (cfs) 10 9 8 8 7 6 6 5 5 ------- --------------------------------------------------------------------- --- Subarea 18 . 0 19 . 0 20 . 0 22 . 0 26 . 0 Description hr hr hr hr hr --- ---- - ------------------------------ ------------------------- --------- - - ----- 1 5 4 4 3 0 ------------------------------------------------------- ------------ -------- ---- Total (cfs) 5 4 4 3 0 Quick TR-55 Version: 5 .46 SIN: Page 4 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 :13 : 16 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION PRE-DEVELOPEMENT 10 YR. STORM Time Flow Time Flow (hrs) (cf s) (hrs) (cf s) - ----------------- ---------------- 11 . 0 0 14 . 8 8 11 . 1 0 14. 9 8 11 . 2 0 15 . 0 8 11 . 3 0 15 .1 8 11 .4 0 15 .2 8 11 .5 0 15 .3 7 11 . 6 0 15 .4 7 11 . 7 2 15 .5 7 11 . 8 5 15 . 6 7 11 . 9 7 15 .7 7 12 . 0 32 15 . 8 6 12 . 1 96 15 . 9 6 12 .2 123 16 . 0 6 12 . 3 87 16 . 1 6 12 .4 49 16 . 2 6 12 . 5 35 16 . 3 6 12 . 6 28 16 .4 6 12 . 7 23 16 .5 6 12 . 8 19 16 . 6 6 12 . 9 18 16 . 7 6 13 . 0 16 16 . 8 5 13 . 1 15 16 . 9 5 13 . 2 14 17 . 0 5 13 . 3 14 17 . 1 5 13 .4 13 17 .2 5 13 . 5 12 17 . 3 5 13 . 6 12 17 .4 5 13 . 7 12 17 . 5 5 13 . 8 11 17 . 6 5 13 . 9 10 17 . 7 5 14 . 0 10 17 . 8 5 14 . 1 10 17 . 9 5 14 . 2 9 18 . 0 5 14 . 3 9 18 . 1 5 14 .4 9 18 .2 5 14 . 5 8 18 . 3 5 14 . 6 8 18 .4 5 14 . 7 8 18 . 5 4 Quick TR-55 Version: 5 .46 SIN: Page 5 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 :13 :16 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION PRE-DEVELOPEMENT 10 YR. STORM Time Flow Time Flow (hrs) (cfs) (hrs) (cfs) - ----------------- ---------------- 18 . 6 4 22 .4 3 18 . 7 4 22 .5 3 18 . 8 4 22 . 6 3 18 . 9 4 22 .7 2 19 . 0 4 22 . 8 2 19 . 1 4 22 .9 2 19 . 2 4 23 .0 2 19 . 3 4 23 . 1 2 19 .4 4 23 .2 2 19 . 5 4 23 .3 2 19 . 6 4 23 .4 2 19 . 7 4 23 .5 2 19 . 8 4 23 . 6 2 19 . 9 4 23 . 7 2 20 . 0 4 23 . 8 2 20 . 1 4 23 . 9 2 20 . 2 4 24 . 0 2 20 .3 4 24 .1 1 20 .4 4 24 .2 1 20 . 5 4 24 . 3 1 20 . 6 4 24 .4 1 20 . 7 4 24 .5 1 20 . 8 4 24 . 6 1 20 . 9 4 24 . 7 1 21 . 0 4 24 . 8 1 21 . 1 3 24 . 9 1 21 . 2 3 25 . 0 1 21 . 3 3 25 . 1 1 21 . 4 3 25 . 2 1 21 . 5 3 25 . 3 1 21 . 6 3 25 .4 0 21 . 7 3 25 . 5 0 21 . 8 3 25 . 6 0 21 . 9 3 25 . 7 0 22 . 0 3 25 . 8 0 22 . 1 3 25 . 9 0 22 . 2 3 22 . 3 3 Quick TR-55 Version: 5 .46 SIN: Page 1 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 : 14 :25 Watershed file: --> GTOWN-1 WSD Hydrograph file: --> GTOWN-1 HYD GEORGETOWNE SUBDIVISION POST DEVELOPEMENT 10 YR. STORM >>>> Input Parameters Used to Compute Hydrograph <<<< ------------------------------------------------------------------------------- Subarea AREA CN Tc * Tt Precip. Runoff Ia/p Description (acres) (hrs) (hrs) (in) I (in) input/used ------------------------------------------------------------------------------- 1 135 . 60 75 . 0 0 .20 0 .00 4.70 1 2 .21 .14 . 10 ------------------------------------------------------------------------------- * Travel time from subarea outfall to composite watershed outfall point . Total area = 135 . 60 acres or 0 .2119 sq.mi Peak discharge = 375 cfs >>>> Computer Modifications of Input Parameters <<<<< ------------------------------------------------------------------------------- Input Values Rounded Values Ia/p Subarea Tc * Tt Tc * Tt Interpolated Ia/p Description (hr) (hr) (hr) (hr) (Yes/No) Messages ------------------------------------------------------------------------------- 1 0 . 20 0 . 00 ** ** No -- ------------------------------------------------------------------------------- * Travel time from subarea outfall to composite watershed outfall point . ** Tc & Tt are available in the hydrograph tables . Quick TR-55 Version: 5 .46 SIN: Page 2 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 : 14 : 25 Watershed file: --> GTOWN-1 WSD Hydrograph file: --> GTOWN-1 HYD GEORGETOWNE SUBDIVISION POST DEVELOPEMENT 10 YR. STORM >>>> Summary of Subarea Times to Peak <<<< Peak Discharge at Time to Peak at Composite Outfall Composite Outfall Subarea (cf s) (hrs) -------------- -------------- ------------ 1 375 12 .2 -------------- -------------- ------------ Composite Watershed 375 12 .2 Quick TR-55 Version: 5 .46 SIN: Page 3 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 :14 :25 Watershed file: --> GTOWN-1 WSD Hydrograph file: --> GTOWN-1 HYD GEORGETOWNE SUBDIVISION POST DEVELOPEMENT 10 YR. STORM Composite Hydrograph Summary (cfs) ---------------- --------------------------------------------------------------- Subarea 11 . 0 11 .3 11. 6 11 . 9 12 . 0 12 . 1 12 . 2 12 .3 12 .4 Description hr hr hr hr hr hr hr hr hr ------------------------------------------------------------------------------- 1 11 15 22 98 189 346 375 225 117 ------------------------------------------------------------------------------- Total (cfs) 11 15 22 98 189 346 375 225 117 --- -------------- -------------------------------------------------------------- Subarea 12 . 5 12 . 6 12 .7 12 . 8 13 . 0 13 . 2 13 . 4 13 . 6 13 . 8 Description hr hr hr hr hr hr hr hr hr ------------------------------------------------------------------------------- 1 78 60 48 40 33 29 25 23 21 ------------------------------------------------------------------------------- Total (cfs) 78 60 48 40 33 29 25 23 21 ------------------------------------------------------------------------------- Subarea 14 . 0 14 . 3 14 . 6 15 . 0 15 . 5 16 . 0 16 . 5 17 . 0 17 . 5 Description hr hr hr hr hr hr hr hr hr ------------------------------7------------------------------------------------ 1 19 16 15 14 13 11 10 9 9 ------------------------------------------------------------------------------- Total (cfs) 19 16 15 14 13 11 10 9 9 - --------------------------------------------------------- --------------------- Subarea 18 . 0 19 . 0 20 . 0 22 . 0 26 . 0 Description hr hr hr hr hr ---------------- - -- - --- ----------------------------------- ---------- - ---------- 1 8 7 6 6 0 --------------------- - --------------------------------------------------------- Total (cfs) 8 7 6 6 0 A Quick TR-55 Version: 5 .46 SIN: Page 4 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 :14 :25 Watershed file: --> GTOWN-1 WSD Hydrograph file: --> GTOWN-1 HYD GEORGETOWNE SUBDIVISION POST DEVELOPEMENT 10 YR. STORM Time Flow Time Flow (hrs) (cfs) (hrs) (cfs) ----------------- ----------------- 11 . 0 11 14 . 8 14 11 . 1 12 14 . 9 14 11 . 2 14 15 . 0 14 11.3 15 15. 1 14 11 .4 17 15 .2 14 11 . 5 20 15 .3 13 11 . 6 22 15 .4 13 11 . 7 47 15 .5 13 11 . 8 73 15 . 6 13 11.9 98 15 .7 12 12 .0 189 15. 8 12 12 . 1 346 15 . 9 11 12 . 2 375 16. 0 11 12 .3 225 16 . 1 11 12 . 4 117 16 .2 11 12 .5 78 16 .3 10 12 . 6 60 16 .4 10 12 . 7 48 16 . 5 10 12 . 8 40 16 . 6 10 12 . 9 36 16 . 7 10 13 . 0 33 16 . 8 9 13 . 1 31 16 . 9 9 13 . 2 29 17 . 0 9 13 . 3 27 17 . 1 9 13 .4 25 17 .2 9 13 . 5 24 17 . 3 9 13 . 6 23 17 .4 9 13 . 7 22 17 . 5 9 13 . 8 21 17 . 6 9 13 . 9 20 17 . 7 9 14 . 0 19 17 . 8 8 14 . 1 18 17 . 9 8 14 . 2 17 18 . 0 8 14 . 3 16 18 . 1 8 14 .4 16 18 . 2 8 14 . 5 15 18 . 3 8 14 . 6 15 18 .4 8 14 . 7 15 18 . 5 8 Quick TR-55 Version: 5 .46 SIN: Page 5 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 : 14 :25 Watershed file: --> GTOWN-1 WSD Hydrograph file: --> GTOWN-1 HYD GEORGETOWNE SUBDIVISION POST DEVELOPEMENT 10 YR. STORM Time Flow Time Flow (hrs) (cfs) (hrs) (cfs) ----------------- ----------------- 18 . 6 7 22 .4 5 18 . 7 7 22 .5 5 18 . 8 7 22 . 6 5 18 . 9 7 22 .7 5 19 . 0 7 22 . 8 5 19 . 1 7 22 . 9 5 19 .2 7 23 . 0 4 19 . 3 7 23 . 1 4 19 .4 7 23 .2 4 19 . 5 6 23 . 3 4 19 . 6 6 23 .4 4 19 . 7 6 23 . 5 4 19 . 8 6 23 . 6 4 19 . 9 6 23 . 7 3 20 . 0 6 23 . 8 3 20 . 1 6 23 . 9 3 20 . 2 6 24 . 0 3 20 .3 6 24 . 1 3 20 .4 6 24 . 2 3 20 . 5 6 24 . 3 3 20 . 6 6 24 .4 2 20 . 7 6 24 . 5 2 20 . 8 6 24 . 6 2 20 . 9 6 24 . 7 2 21 . 0 6 24 . 8 2 21 . 1 6 24 . 9 2 21 . 2 6 25 . 0 2 21 . 3 6 25 . 1 1 21 . 4 6 25 . 2 1 21 .5 6 25 . 3 1 21 . 6 6 25 .4 1 21 . 7 6 25 . 5 1 21 . 8 6 25 . 6 1 21 . 9 6 25 . 7 0 22 . 0 6 25 . 8 0 22 . 1 6 25 . 9 0 22 . 2 6 22 .3 6 1 Quick TR-55 Version: 5 .46 SIN: Page 1 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 :17:55 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION POST-DEVELOPEMENT 10 YR. STORM >>>> Input Parameters Used to Compute Hydrograph <<<< ------------------------------------------------------------------------------- Subarea AREA CN Tc * Tt Precip. Runoff Ia/p I Description (acres) (hrs) (hrs) (in) (in) input/used ------------------------------------------------------------------------------- 1 135 . 60 75 . 0 0.20 0 . 00 4 .70 1 2 . 21 . 14 . 10 ------------------------------------------------------------------------------- * Travel time from subarea outfall to composite watershed outfall point . Total area = 135 .60 acres or 0 .2119 sq.mi Peak discharge = 375 cfs >>>> Computer Modifications of Input Parameters <<<<< ------------------------------------------------------------------------------- Input Values Rounded Values Ia/p Subarea Tc * Tt Tc * Tt Interpolated Ia/p Description (hr) (hr) (hr) (hr) (Yes/No) Messages ------------------------------------------------------------------------------- 1 0 . 20 0 . 00 ** ** No - - ------------------------------------------------------------------------------- * Travel time from subarea outfall to composite watershed outfall point . ** Tc & Tt are available in the hydrograph tables . Quick TR-55 Version: 5 .46 SIN: Page 2 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 : 17 :55 Watershed file: --> GTOWN WSD Hydrograph file : --> GTOWN HYD GEORGETOWNE SUBDIVISION POST-DEVELOPEMENT 10 YR. STORM >>>> Summary of Subarea Times to Peak <<<< Peak Discharge at Time to Peak at Composite Outf all Composite Outfall Subarea (cfs) (hrs) ------------ -------- ------ -------------- 375 1 12 . 2 - -------------- ------------- ------------ Composite Watershed 375 12 . 2 Quick TR-55 Version: 5 .46 SIN: Page 3 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 : 17 : 55 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION POST-DEVELOPEMENT 10 YR. STORM Composite Hydrograph Summary (cfs) __ ------------------------- Subarea 11 . 0 11 . 3 11 . 6 11 . 9 12 . 0 12 . 1 12 . 2 12 . 3 12 .4 Description hr hr hr hr hr hr hr hr - hr ---------------------------------------------------- - --- 1 11 15 22 98 189 346 375 225 117 -------------------------------------------------------- Total (cfs) 11 15 22 98 189 346 375 225 117 -------------------------------------------------------- Subarea 12 . 5 12 . 6 12 . 7 12 . 8 13 . 0 13 . 2 13 .4 13 . 6 13 . 8 Description hr hr hr hr hr hr hr - hr- - hr ------------------- ----- - -- 1 -------------------------- - --7860 48 40 33 29 25 23 21 ------------------------- Total (cfs) 78 60 48 40 33 29 25 23 21 ---------------------------- Subarea 14 . 0 14 . 3 14 . 6 15 . 0 15 .5 16 . 0 16 . 5 17 . 0 17 . 5 Description hr hr hr hr ----hr-- --hr - hr - - hr - hr _ --.------------ 1 19 16 15 14 13 11 10 9 9 --------------------------------------------------------- Total (cfs) 19 16 15 14 13 11 10 9 9 ------- - ----- ---------------------------------------- Subarea 18 . 0 19 . 0 20 . 0 22 . 0 26 . 0 Description hr hr hr hr hr --------- ------- --------------------------------------- 1 8 7 6 6 0 ------ -------- --------------------------------------- Total (cfs) 8 7 6 6 0 Quick TR-55 Version: 5 .46 SIN: Page 4 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 : 17 :55 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION POST-DEVELOPEMENT 10 YR. STORM Time Flow Time Flow (hrs) (cfs) (hrs) (cfs) ----------------- ----------------- 11 . 0 11 14 .8 14 11 . 1 12 14 .9 14 11 . 2 14 15 . 0 14 11 .3 15 15 .1 14 11 .4 17 15 . 2 14 11 . 5 20 15 .3 13 11 . 6 22 15 .4 13 11 . 7 47 15 .5 13 11 . 8 73 15 . 6 13 11 .9 98 15 . 7 12 12 . 0 189 15 . 8 12 12 . 1 346 15 . 9 11 12 . 2 375 16 . 0 11 12 .3 225 16 . 1 11 12 .4 117 16 . 2 11 12 . 5 78 16 . 3 10 12 . 6 60 16 .4 10 12 .7 48 16 .5 10 12 . 8 40 16 . 6 10 12 . 9 36 16 . 7 10 13 . 0 33 16 . 8 9 13 . 1 31 16 . 9 9 13 . 2 29 17 . 0 9 13 . 3 27 17 . 1 9 13 .4 25 17 . 2 9 13 . 5 24 17 . 3 9 13 . 6 23 17 .4 9 13 . 7 22 17 . 5 9 13 . 8 21 17 . 6 9 13 . 9 20 17 . 7 9 14 . 0 19 17 . 8 8 14 . 1 18 17 . 9 8 14 .2 17 18 . 0 8 14 . 3 16 18 . 1 8 14 .4 16 18 . 2 8 14 . 5 15 18 . 3 8 14 . 6 15 18 .4 8 14 . 7 15 18 . 5 8 1 Quick TR-55 Version: 5 .46 SIN: Page 5 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 : 17 :55 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION POST-DEVELOPEMENT 10 YR. STORM Time Flow Time Flow (hrs) (cfs) (hrs) (cf s) ----------------- ----------------- 18 . 6 7 22 .4 5 18 . 7 7 22 .5 5 18 . 8 7 22 . 6 5 18 . 9 7 22 . 7 5 19 . 0 7 22 . 8 5 19 . 1 7 22 .9 5 19 . 2 7 23 .0 4 19 .3 7 23 . 1 4 19 .4 7 23 .2 4 19 .5 6 23 . 3 4 19 .6 6 23 .4 4 19 .7 6 23 . 5 4 19 . 8 6 23 . 6 4 19 .9 6 23 . 7 3 20 . 0 6 23 . 8 3 20 .1 6 23 . 9 3 20 .2 6 24 . 0 3 20 . 3 6 24 . 1 3 20 .4 6 24 . 2 3 20 .5 6 24 .3 3 20 . 6 6 24 .4 2 20 . 7 6 24 . 5 2 20 . 8 6 24 . 6 2 20 . 9 6 24 . 7 2 21 . 0 6 24 . 8 2 21.1 6 24 .9 2 21 .2 6 25 . 0 2 21 . 3 6 25 . 1 1 21 .4 6 25 . 2 1 21 . 5 6 25 . 3 1 21 . 6 6 25 .4 1 21 . 7 6 25 . 5 1 21 . 8 6 25 . 6 1 21 . 9 6 25 . 7 0 22 . 0 6 25 . 8 0 22 . 1 6 25 . 9 0 22 . 2 6 22 . 3 6 r Quick TR-55 Version: 5 .46 SIN: Page 1 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 :21: 58 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION SO YEAR PEAK DISCHARGE >>>> Input Parameters Used to Compute Hydrograph << ------------------------------------------------------------------------------- Subarea AREA CN Tc * Tt Precip. I Runoff Ia/p Description (acres) (hrs) (hrs) (in) (in) input/used ------------------------------------------------------------------------------- 1 135 . 60 75 . 0 0 . 20 0 .00 6 .40 1 3 . 63 . 1 .10 ------------------------------------------------------------------------------- * Travel time from subarea outfall to composite watershed outfall point . Total area = 135 . 60 acres or 0 . 2119 sq.mi Peak discharge = 615 cfs >>>> Computer Modifications of Input Parameters <<<<< ------------------------------------------------------------------------------- Input Values Rounded Values Ia/p Subarea Tc * Tt Tc * Tt Interpolated Ia/p Description (hr) (hr) (hr) (hr) (Yes/No) Messages ------------------------------------------------------------------------------- 1 0 .20 0 . 00 ** ** No -- ------------------------------------------------------------------------------- * Travel time from subarea outfall to composite watershed outfall point . ** Tc & Tt are available in the hydrograph tables . 1 Quick TR-55 Version: 5 .46 SIN: Page 2 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 : 21:58 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION 50 YEAR PEAK DISCHARGE >>>> Summary of Subarea Times to Peak <<<< Peak Discharge at Time to Peak at Composite Outfall Composite Outf all Subarea (cf s) (hrs) -------------- -------------- ------------ 1 615 12 .2 -------------- -------------- ------------ Composite Watershed 615 12 .2 f Quick TR-55 Version: 5 .46 SIN: Page 3 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 :21:58 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION 50 YEAR PEAK DISCHARGE Composite Hydrograph Summary (cfs) ------------------------------------------------------------------------------- Subarea 11 . 0 11 . 3 11 . 6 11 . 9 12 . 0 12 . 1 12 . 2 12 .3 12 .4 Description hr hr hr hr hr hr hr hr hr ------------------------------------------------------------------------------- 1 18 24 36 161 310 568 615 370 192 ------------------------------------------------------------------------------- Total (cfs) 18 24 36 161 310 568 615 370 192 ------------------------------------------------------------------------------- Subarea 12 . 5 12 . 6 12 .7 12 . 8 13 .0 13 .2 13 .4 13 . 6 13 . 8 Description hr hr hr hr hr hr hr hr hr ------------------------------------------------------------------------------- 1 128 98 78 66 54 47 42 38 34 ------------------------------------------------------------------------------- Total (cfs) 128 98 78 66 54 47 42 38 34 ------------------------------------------------------------------------------- Subarea 14 . 0 14 . 3 14 . 6 15 .0 15 .5 16 . 0 16 .5 17 . 0 17 .5 Description hr hr hr hr hr hr hr hr hr ------------------------------------------------------------------------------- 1 31 27 25 23 21 18 16 15 15 ----------- - ------------------------------------------------------------------- Total (cfs) 31 27 25 23 21 18 16 15 15 ------------------------------------------------------------------------------- Subarea 18 . 0 19 . 0 20 . 0 22 . 0 26 . 0 Description hr hr hr hr hr ----------------- -------------------------------------------------------------- 1 14 12 10 9 0 ------------------------------------------------------------------------------- Total (cfs) 14 12 10 9 0 I I Quick TR-55 Version: 5 .46 SIN: Page 4 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 :21 :58 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION 50 YEAR PEAK DISCHARGE Time Flow Time Flow (hrs) (cfs) (hrs) (cfs) ----------------- ----------------- 11. 0 18 14. 8 24 11. 1 20 14 . 9 24 11 .2 22 15 . 0 23 11 .3 24 15 . 1 23 11.4 28 15 . 2 22 11 .5 32 15 . 3 22 11. 6 36 15 .4 21 11. 7 78 15 . 5 21 11. 8 119 15 . 6 20 11 .9 161 15 . 7 20 12 . 0 310 15 . 8 19 12 .1 568 15 . 9 19 12 . 2 615 16 . 0 18 12 . 3 370 16 .1 18 12 .4 192 16 .2 17 12 . 5 128 16 . 3 17 12 . 6 98 16 .4 16 12 .7 78 16 . 5 16 12 . 8 66 16 . 6 16 12 . 9 -- 60 16 . 7 16 13 . 0 54 16 . 8 15 13 . 1 50 16 . 9 15 13 . 2 47 17 . 0 15 13 .3 44 17 . 1 15 13 .4 42 17 . 2 15 13 .5 40 17 . 3 15 13 . 6 38 17 .4 15 13 . 7 36 17 . 5 15 13 . 8 34 17 . 6 15 13 . 9 32 17 . 7 15 14 . 0 31 17 . 8 14 14 . 1 30 17 . 9 14 14 . 2 28 18 . 0 14 14 . 3 27 18 . 1 14 14 .4 26 18 . 2 14 14 . 5 26 18 . 3 13 14 . 6 25 18 .4 13 14 . 7 24 18 . 5 13 Quick TR-55 Version: 5 .46 SIN: Page 5 TR-55 TABULAR HYDROGRAPH METHOD Type II Distribution (24 hr. Duration Storm) Executed: 03-10-1995 12 : 21 :58 Watershed file: --> GTOWN WSD Hydrograph file: --> GTOWN HYD GEORGETOWNE SUBDIVISION 50 YEAR PEAK DISCHARGE Time Flow Time Flow (hrs) (cfs) (hrs) (cfs) ----------------- ----------------- 18 .6 13 22 .4 8 18 . 7 13 22 .5 8 18 . 8 12 22 . 6 8 18 . 9 12 22 .7 7 19 . 0 12 22 . 8 7 19 . 1 12 22 . 9 7 19 .2 12 23 .0 7 19 .3 11 23 .1 7 19 .4 11 23 .2 6 19 .5 11 23 .3 6 19 . 6 11 23 .4 6 19 .7 11 23 .5 6 19 . 8 10 23 . 6 5 19 .9 10 23 . 7 5 20 .0 10 23 . 8 5 20 .1 10 23 . 9 5 20 . 2 10 24 . 0 4 20 . 3 10 24 . 1 4 20 .4 10 24 . 2 4 20 .5 10 24 .3 4 20 . 6 10 24 .4 4 20 . 7 10 24 .5 3 20 . 8 10 24 . 6 3 20 . 9 10 24 . 7 3 21 . 0 10 24 . 8 3 21. 1 9 24 . 9 2 21 .2 9 25 . 0 2 21 . 3 9 25 . 1 2 21.4 9 25 . 2 2 21 . 5 9 25 .3 2 21 . 6 9 25 .4 1 21 . 7 9 25 . 5 1 21 . 8 9 25 . 6 1 21 . 9 9 25 . 7 1 22 . 0 9 25 . 8 0 22 . 1 9 25 . 9 0 22 . 2 9 22 . 3 8 POND-2 Version: 5 . 17 SIN: Page 1 EXECUTED: 06-08-1995 14 : 14 :26 ***************************** * * GEORGETOWNE SUBDIVISION * STAGE STORAGE * * * ***************************** Inflow Hydrograph: GTOWN-1 HYD Rating Table file: GTOWN PND ----INITIAL CONDITIONS---- Elevation = 15 . 75 ft Outflow = 0 . 00 cfs Storage = 1 . 12 ac-ft INTERMEDIATE ROUTING GIVEN POND DATA COMPUTATIONS ------------------------------ -------------------------- ELEVATION OUTFLOW STORAGE 2S/t 2S/t + 0 (ft) (cfs) (ac-ft) (cfs) (cfs) --------- --------- ---------- ------------ ------------- 15 . 75 0 . 0 1.120 271.0 271. 0 16 . 00 0 . 0 2 .350 568 . 7 568 . 7 17 . 00 0 . 0 3 . 700 895 .4 895 .4 18 . 00 0 . 0 5 . 170 1251 .1 1251 . 1 19 . 00 0 . 0 6 . 750 1633 .5 1633 . 5 20 . 00 78 . 0 8 .470 2049 . 7 2127 .7 21 . 00 86 . 0 10 .310 2495 .0 2581.0 22 . 00 93 . 0 12 .290 2974 .2 3067 .2 23 . 00 100 . 0 14 .410 3487 .2 3587 .2 23 .50 103 .0 15 .520 3755 .8 3858 . 8 -------------------------- ------------------------------ Time increment (t) = 0 . 100 hrs . 1 POND-2 Version: 5 . 17 SIN: Page 2 EXECUTED: 06-08-1995 14 : 14 :26 Pond File: GTOWN PND Inflow Hydrograph: GTOWN-1 HYD Outflow Hydrograph: GTOWN HYD INFLOW HYDROGRAPH ROUTING COMPUTATIONS ------------------ ------------------------------------------------------ TIME INFLOW I1+I2 2S/t - O 2S/t + O OUTFLOW ELEVATION (hrs) (cfs) (cfs) (cfs) (cfs) (cfs) (ft) -------- --------- --------- ------------ ----------- --------- --------- 11 . 000 11. 00 ----- 271.0 271 . 0 0 . 00 15 . 75 11. 100 12 . 00 23 . 0 294 . 0 294 . 0 0 . 00 15 . 77 11 . 200 14 . 00 26 .0 320 . 0 320 . 0 0 . 00 15 . 79 11 .300 15 .00 29 .0 349 . 0 349 . 0 0 . 00 15 . 82 11.400 17 . 00 32 .0 381 . 0 381 . 0 0 . 00 15 . 84 11 . 500 20 . 00 37 . 0 418 . 0 418 . 0 0 . 00 15 . 87 11 . 600 22 . 00 42 . 0 460 . 0 460 . 0 0 . 00 15 . 91 11 .700 47 . 00 69 . 0 529 . 0 529 . 0 0 . 00 15 . 97 11. 800 73 .00 120 . 0 649 . 0 649 . 0 0 . 00 16 .25 11.900 98 . 00 171.0 820 . 0 820 . 0 0 . 00 16 . 77 12 . 000 189 . 00 287.0 1107 . 0 1107 . 0 0 . 00 17 .59 12 . 100 346 . 00 535 .0 1639 .3 1642 . 0 1 .35 19 . 02 12 .200 375 . 00 721. 0 2196 . 1 2360 .3 82 .11 20 . 51 12 .300 225 . 00 600 .0 2617 . 9 2796 . 1 89 .10 21 .44 12 .400 117 . 00 342 . 0 2777 . 0 2959 . 9 91 .46 21.78 12 .500 78 . 00 195 .0 2788 . 8 2972 . 0 91. 63 21. 80 12 . 600 60 . 00 138 .0 2744 . 8 2926 . 8 90 .98 21 . 71 12 . 700 48 . 00 108 . 0 2673 . 0 2852 . 8 89 . 91 21.56 12 . 800 40 . 00 88 .0 2583 . 8 2761. 0 88 .59 21.37 12 . 900 36 . 00 76.0 2485 .5 2659 . 8 87 .13 21.16 13 . 000 33 . 00 69 .0 2383 .5 2554 .5 85 .53 20 .94 13 . 100 31.00 64 .0 2280 .2 2447 .5 83 .64 20 .71 13 .200 29 . 00 60 . 0 2176 . 7 2340 .2 81. 75 20 .47 13 . 300 27 . 00 56 . 0 2073 .0 2232 . 7 79 .85 20 .23 13 .400 25 . 00 52 . 0 1969 . 9 2125 . 0 77 . 56 19 . 99 13 . 500 24 . 00 49 .0 1897 .2 2018 . 9 60 . 82 19 . 78 13 . 600 23 . 00 47 . 0 1846 . 1 1944 . 2 49 . 04 19 . 63 13 . 700 22 . 00 45 . 0 1809 . 8 1891 . 1 40 . 66 19 . 52 13 . 800 21 . 00 43 . 0 1783 . 6 1852 . 8 34 . 61 19 .44 13 . 900 20 . 00 41. 0- 1764 .3 1824 . 6 30 . 16 19 .39 14 . 000 19 . 00 39 . 0 1749 . 7 1803 . 3 26 .79 19 .34 14 . 100 18 . 00 37 . 0 1738 .3 1786 . 7 24 .18 19 .31 14 .200 17 . 00 35 . 0 1729 .2 1773 . 3 22 . 07 19 . 28 14 .300 16 . 00 33 . 0 1721. 6 1762 . 2 20 .31 19 . 26 14 . 400 16 . 00 32 .0 1715 . 7 1753 . 6 18 . 95 19 .24 14 . 500 15 . 00 31. 0 1711 . 0 1746 . 7 17 . 86 19 . 23 14 . 600 15 . 00 30 .0 1707 . 0 1741 . 0 16 . 96 19 . 22 14 . 700 15 . 00 30 .0 1704 . 4 1737 . 0 16 .34 19 .21 14 . 800 14 . 00 29 . 0 1701 . 8 1733 . 4 15 . 76 19 . 20 14 . 900 14 . 00 28 . 0 1699 . 4 1729 . 8 15 . 20 19 . 19 15 . 000 14 . 00 28 . 0 1697 . 8 1727 . 4 14 . 82 19 . 19 15 . 100 14 . 00 28 . 0 1696 . 7 1725 . 8 14 . 56 19 . 19 15 . 200 14 . 00 28 .0 1695 . 9 1724 . 7 14 . 39 19 . 18 15 .300 13 . 00 27 . 0 1694 . 7 1722 . 9 14 . 11 19 . 18 15 .400 13 . 00 26 .0 1693 . 2 1720 . 7 13 .76 19 . 18 ------------------ ------------------------------------------------------ t POND-2 Version: 5 . 17 SIN: Page 3 EXECUTED: 06-08-1995 14 :14:26 Pond File: GTOWN PND Inflow Hydrograph: GTOWN-1 HYD Outflow Hydrograph: GTOWN HYD INFLOW HYDROGRAPH ROUTING COMPUTATIONS ------------------ ------------------------------------------------------ TIME INFLOW I1+I2 2S/t - 0 2S/t + 0 OUTFLOW ELEVATION (hrs) (cfs) (cfs) (cfs) (cfs) (cfs) (ft) -------- --------- --------- ------------ ----------- --------- --------- 15 .500 13 . 00 26 . 0 1692 . 1 1719 .2 13 .52 19 .17 15 . 600 13 . 00 26 . 0 1691 .4 1718 . 1 13 .35 19 .17 15 . 700 12 . 00 25 . 0 1690 .2 1716 .4 13 . 08 19 . 17 15 . 800 12 . 00 24 . 0 1688 . 8 1714 . 2 12 . 74 19 .16 15 . 900 11 . 00 23 . 0 1687 . 1 1711 . 8 12 .35 19 . 16 16 . 000 11. 00 22 . 0 1685 . 2 1709 . 1 11 . 92 19 .15 16 . 100 11 . 00 22 . 0 1683 . 9 1707 . 2 11 . 63 19 . 15 16 .200 11 . 00 22 . 0 1683 . 1 1705 . 9 11 .43 19 . 15 16 .300 10 . 00 21. 0 1681 . 8 1704 . 1 11 . 14 19 . 14 16 .400 10 . 00 20 .0 1680 .2 1701. 8 10 . 78 19 .14 16 .500 10 . 00 20 . 0 1679 .2 1700 .2 10. 53 19 .14 16 . 600 10 . 00 20 . 0 1678 .4 1699 .2 10 .36 19 .13 16 . 700 10 . 00 20 . 0 1677 .9 1698 .4 10 .25 19 .13 16 . 800 9 . 00 19 .0 1676 . 9 1696 . 9 10 . 01 19 .13 16 . 900 9 . 00 18 . 0 1675 .5 1694 . 9 9 . 69 19 .12 17 . 000 9 . 00 18 . 0 1674 . 6 1693 . 5 9 .47 19 .12 17 . 100 9 . 00 18 .0 1673 . 9 1692 . 6 9 .32 19 .12 17 . 200 9 . 00 18 .0 1673 .5 1691 . 9 9 .22 19 . 12 17 .300 9 . 00 18 .0 1673 .2 1691 .5 9 . 15 19 .12 17 .400 9 . 00 18 .0 1673 .0 1691 .2 9 .10 19 .12 17 .500 9 . 00 18 .0 1672 . 8 1691 . 0 9 .07 19 .12 17 . 600 9 . 00 18.0 1672 .7 1690 . 8 9 . 05 19 .12 17 . 700 9 . 00 18 .0 1672 . 7 1690 . 7 9 . 03 19 .12 17 . 800 8 . 00 17 .0 1671 .9 1689 . 7 8 . 87 19 . 11 17 .900 8 . 00 16.0 1670 . 8 1687 . 9 8 . 59 19 . 11 18 . 000 8 . 00 16 . 0 1669 . 9 1686 . 8 8 .41 19 . 11 18 . 100 8 . 00 16. 0 1669 .4 1685 . 9 8 .28 19 .11 18 . 200 8 . 00 16 . 0 1669 . 0 1685 .4 8 . 19 19 . 10 18 .300 8 . 00 16 . 0 1668 . 8 1685 . 0 8 . 13 19 . 10 18 .400 8 . 00 16 . 0- 1668 . 6 1684 . 8 8 . 09 19 .10 18 . 500 8 . 00 16.0 1668 . 5 1684 . 6 8 . 06 19 . 10 18 . 600 7 . 00 15 . 0 1667 . 7 1683 . 5 7 . 88 19 . 10 18 . 700 7 . 00 14 . 0 1666 . 5 1681 . 7 7 . 60 19 . 10 18 . 800 7 . 00 14 . 0 1665 . 6 1680 . 5 7 .41 19 . 10 18 . 900 7 . 00 14 . 0 1665 . 1 1679 . 6 7 . 28 19 .09 19 . 000 7 . 00 14 . 0 1664 . 7 1679 . 1 7 . 19 19 . 09 19 . 100 7 . 00 14 .0 1664 .4 1678 . 7 7 . 13 19 . 09 19 . 200 7 . 00 14 . 0 1664 . 2 1678 . 4 7 . 09 19 . 09 19 . 300 7 . 00 14 . 0 1664 . 1 1678 . 2 7 . 06 19 . 09 19 .400 7 . 00 14 .0 1664 . 0 1678 . 1 7 . 04 19 . 09 19 . 500 6 . 00 13 . 0 1663 .3 1677 . 0 6 . 87 19 . 09 19 . 600 6 . 00 12 .0 1662 . 1 1675 . 3 6 . 60 19 . 08 19 . 700 6 . 00 12 . 0 1661 .3 1674 . 1 6 .41 19 . 08 19 . 800 6 . 00 12 . 0 1660 . 7 1673 . 3 6 .28 19 .08 19 . 900 6 . 00 12 . 0 1660 .3 1672 . 7 6 . 19 19 . 08 20 . 000 6 . 00 12 . 0 1660 . 1 1672 . 3 6 . 13 1 19 . 08 ------------------ ------------------------------------------------------ POND-2 Version: 5 . 17 SIN: Page 4 EXECUTED: 06-08-1995 14: 14 :26 Pond File: GTOWN PND Inflow Hydrograph: GTOWN-1 HYD Outflow Hydrograph: GTOWN HYD INFLOW HYDROGRAPH ROUTING COMPUTATIONS ------------------ ------------------------------------------------------ TIME INFLOW I1+I2 2S/t - O 2S/t + O OUTFLOW ELEVATION (hrs) (cfs) (cfs) (cfs) (cfs) (cfs) (ft) -------- --------- --------- ------------ ----------- --------- --------- 20 . 100 6 . 00 12 . 0 1659 . 9 1672 . 1 6 . 09 19 .08 20 . 200 6 . 00 12 . 0 1659 . 8 1671 . 9 6 . 06 19 .08 20 . 300 6 . 00 12 . 0 1659 . 7 1671 . 8 6 . 04 19 . 08 20 .400 6 . 00 12 . 0 1659 . 6 1671. 7 6 . 03 19 . 08 20 . 500 6 . 00 12 . 0 1659 .6 1671 . 6 6 . 02 19 . 08 20 . 600 6 . 00 12 . 0 1659 . 6 1671 . 6 6 . 01 19 . 08 20 . 700 6 . 00 12 . 0 1659 . 6 1671 . 6 6 . 01 19 . 08 20 . 800 6 . 00 12 . 0 1659 .5 1671 . 6 6 . 01 19 . 08 20 . 900 6 . 00 12 .0 1659 .5 1671 .5 6 . 00 19 . 08 21 . 000 6 . 00 12 .0 1659 .5 1671 . 5 6 . 00 19 . 08 21 . 100 6 . 00 12 . 0 1659 .5 1671 . 5 6 . 00 19 . 08 21 . 200 6 . 00 12 . 0 1659 .5 1671. 5 6 . 00 19 . 08 21 . 300 6 . 00 12 . 0 1659 .5 1671 .5 6 . 00 19 . 08 21 .400 6 . 00 12 . 0 1659 .5 1671.5 6 . 00 19 . 08 21 .500 6 . 00 12 . 0 1659 .5 1671 . 5 6 . 00 19 . 08 21 . 600 6 . 00 12 . 0 1659 .5 1671 .5 6 . 00 19 . 08 21 . 700 6 . 00 12 . 0 1659 .5 1671 . 5 6 . 00 19 . 08 21 . 800 6 . 00 12 . 0 1659 .5 1671 .5 6 . 00 19 .08 21 . 900 6 . 00 12 . 0 1659 .5 1671.5 6 . 00 19 . 08 22 .000 6 . 00 12 . 0 1659 .5 1671 .5 6 . 00 19 . 08 22 . 100 6 . 00 12 . 0 1659 .5 1671.5 6 . 00 19 . 08 22 .200 6 . 00 12 . 0 1659 .5 1671.5 6 . 00 19 .08 22 . 300 6 . 00 12 . 0 1659 .5 1671 . 5 6 . 00 19 . 08 22 .400 5 . 00 11 . 0 1658 . 8 1670 . 5 5 . 84 19 . 07 22 .500 5 . 00 10 . 0 1657 .7 1668 . 8 5 . 58 19 . 07 22 . 600 5 . 00 10 . 0 1656 . 9 1667 . 7 5 .39 19 . 07 22 . 700 5 . 00 10 . 0 1656 .4 1666 .9 5 . 27 19 . 07 22 . 800 5 . 00 10 . 0 1656 . 0 1666 .4 5 . 18 19 . 07 22 . 900 5 . 00 10 . 0 1655 .7 1666 . 0 5 . 13 19 . 07 23 . 000 4 . 00 9 . 0 1654 .9 1664 . 7 4 . 93 19 . 06 23 . 100 4 . 00 8 . 0 1653 . 6 1662 . 9 4 . 64 19 . 06 23 . 200 4 . 00 8 . 0 1652 . 7 1661 . 6 4 .43 19 . 06 23 . 300 4 . 00 8 . 0 1652 . 1 1660 . 7 4 . 30 19 . 06 23 .400 4 . 00 8 . 0 1651 . 7 1660 . 1 4 . 20 19 .05 23 .500 4 . 00 8 .0 1651.5 1659 . 7 4 . 14 19 .05 23 . 600 4 . 00 8 .0 1651.3 1659 .5 4 . 10 19 . 05 23 . 700 3 . 00 7 . 0 1650 .4 1658 . 3 3 . 91 19 . 05 23 . 800 3 . 00 6 . 0 1649 . 2 1656 . 4 3 . 62 19 . 05 23 . 900 31, 00 6 . 0 1648 .4 1655 . 2 3 . 43 19 . 04 24 . 000 3 . 00 6 . 0 1647 . 8 1654 .4 3 . 29 19 . 04 24 . 100 3 . 00 6 . 0 1647 .4 1653 . 8 3 . 20 19 . 04 24 . 200 3 . 00 6 . 0 1647 . 1 1653 . 4 3 . 14 19 . 04 24 .300 3 . 00 6 . 0 1646 . 9 1653 . 1 3 . 09 19 . 04 24 .400 2 . 00 5 . 0 1646 . 1 1651 . 9 2 . 91 19 .04 24 .500 2 . 00 4 . 0 1644 .9 1650 . 1 2 . 62 19 . 03 24 . 600 2 . 00 4 . 0 1644 . 0 1648 . 9 2 . 42 19 . 03 POND-2 Version: 5 . 17 SIN: Page 5 EXECUTED: 06-08-1995 14:14:26 Pond File: GTOWN PND Inflow Hydrograph: GTOWN-1 HYD Outflow Hydrograph: GTOWN HYD INFLOW HYDROGRAPH ROUTING COMPUTATIONS ------------------ ------------------------------------------------------ TIME INFLOW I1+I2 2S/t - O 2S/t + O OUTFLOW ELEVATION (hrs) (cfs) (cfs) (cfs) (cfs) (cfs) (ft) -------- --------- --------- ------------ ----------- --------- --------- 24 .700 2 . 00 4 . 0 1643 .4 1648 . 0 2 . 29 19 .03 24 . 800 2 . 00 4 . 0 1643 . 0 1647 .4 2 .20 19 .03 24 .900 2 . 00 4 . 0 1642 . 8 1647 . 0 2 . 14 19 . 03 25 .000 2 . 00 4 . 0 1642 . 6 1646 . 8 2 . 09 19 . 03 25 .100 1. 00 3 . 0 1641 . 8 1645 . 6 1 . 91 19 . 02 25 .200 1. 00 2 . 0 1640 . 5 1643 . 8 1 . 62 19 . 02 25 . 300 1 . 00 2 . 0 1639 . 7 1642 .5 1 . 42 19 . 02 25 .400 1 . 00 2 .0 1639 . 1 1641. 7 1. 29 19 . 02 25 . 500 1 . 00 2 . 0 1638 .7 1641. 1 1 .20 19 . 02 25 . 600 1. 00 2 .0 1638 .4 1640 .7 1 . 14 19 . 01 25 . 700 0 . 00 1.0 1637 . 6 1639 .4 0 . 94 19 . 01 25 . 800 0 . 00 0 . 0 1636 .3 1637 . 6 0 . 64 19 .01 25 . 900 0 . 00 0. 0 1635 .4 1636 . 3 0 .44 19 . 01 i POND-2 Version: 5 . 17 SIN: Page 6 EXECUTED: 06-08-1995 14:14 :26 ****************** SUMMARY OF ROUTING COMPUTATIONS ****************** Pond File : GTOWN PND Inflow Hydrograph: GTOWN-1 HYD Outflow Hydrograph: GTOWN HYD Starting Pond W. S . Elevation = 15 . 75 ft ***** Summary of Peak Outflow and Peak Elevation ***** Peak Inflow = 375 . 00 cfs Peak Outflow = 91. 63 cfs Peak Elevation = 21. 80 ft ***** Summary of Approximate Peak Storage ***** Initial Storage = 1. 12 ac-ft Peak Storage From Storm = 10 . 78 ac-ft --------------- Total Storage in Pond = 11 .90 ac-ft Warning: Inflow hydrograph truncated on left side. e POND-2 Version: 5 .17 SIN: Page 7 Pond File: GTOWN .PND Inflow Hydrograph: GTOWN-1 HYD Outflow Hydrograph: GTOWN HYD EXECUTED: 06-08-1995 Peak Inflow = 375. 00 cfs 14 : 14 :26 Peak Outflow = 91 .63 cfs Peak Elevation = 21 .80 ft Flow (cfs) 0 40 80 120 160 200 240 -280 320 360 400 440 11 .4 - x X 11 .5 - x x 11 . 6 - x x 11.7 - x x 11 . 8 - x x 11. 9 - x x 12 . 0 - x * x * 12 . 1 - x * X * 12 .2 - x X * 12 .3 - X x 12 .4 - x X* 12 . 5 - * X * X 12 . 6 - * x * X 12 . 7 - * x i x 12 . 8 - * x * x 12 . 9 - * x * X 13 . 0 - * x * x 13 . 1 - * X * X 13 . 2 - * x * x 13 . 3 - * x TIME (hrs) * File: GTOWN-1 HYD Qmax = 375 . 0 cfs ia�Lo�cr x File: GTOWN HYD Qmax = 91 . 6 cfs CALCULATION PROJECT PROD. NO. DATE -4-g5 CLIENT Ld-,.t'�M�� - /"'� SUBJECT_ dr iGG��d C6 CV DES. BY ft£rf CHK. BY REMARKS �• 5 g _ e c� = Ito 9.(z-r( = 9G .,,�McMM&CRffD Circular Channel Analysis & Design Solved with Manning' s Equation Open Channel - Uniform flow Worksheet Name : GEORGETOWNE Comment: SHAFT SPILLWAY Solve For Actual Discharge Given Input Data: Diameter. . . . . . . . . . 3 .50 ft Slope . . . . . . . . . . . . . 0 .0057 ft/ft Manning' s n. . . . . . . 0 . 012 Depth. . . . . . . . . . . . . 3 .50 ft Computed Results : Discharge. . . . . . . . . 82 . 29 cfs Velocity. . . . . . . . . . 8 .55 fps Flow Area. . . . . . . . . 9 . 62 sf Critical Depth. . . . 2 . 83 ft Critical Slope- - - - 0 .0058 ft/ft Percent Full . . . . . . 100 .00 0 Full Capacity. . . . . 82 .29 cfs QMAX @. 94D. . . . . . . . 88 .52 cfs Froude Number. . . . . FULL Open Channel Flow Module, Version 3 .42 (c) 1991 Haestad Methods, Inc . * 37 Brookside Rd * Waterbury, Ct 06708 CALC U LATI O N PROJECT �� ,, � �-� �`�v7[7��1�5�a-✓ PROJ. NO. 0383003/ CLIENT DATE SUBJECT a�-t D �Z3 �pr!.JE'� o� DES. BY CHK. BY REMARKS z n )Ins CRFM M� CALCULATION PROJECT Zr�-� So i!; t:1' 0„`1-1 PROJ.NO. CLIENT LA- �r� SIG DATE y SUBJECT DES. BY l o �i �� i!2 • c�LJ� i�o•r CHK.BY REMARKS io y z s 4 5)� 3 f-7-) �Z 33� McKI M CALCULATION PROJECT LT'=o � �c��l sy z''y 's'`'J PROJ. NO. CLIENT �'�'�'��'�6+�L DATE — DES.2 iGLi Jd� DES. BY SUBJECT ► ��c 5�—�/ Z CHK. BY REMARKS 1�or-11� S 3Z;_._/c .-4 1 5 ic:, �a 4-1z Cam. 7 �)C�-Q�J(� ✓-r.3�� - lZ0. 5 cr-� IZo- S z 3. 4 1 j McKM&CREED / CALCULATION PROJECT GI Ec �{� ��'`f S r3Di✓��'o^� PROJ.NO. CLIENT �,�(i�M.d. L� DATE (SUBJECT DES. BY F I-'E �'�S`�_��C�l S��Lid�-�/ CHK. BY REMARKS 4-3 5p ��. 7ct)L.45)CZg, 33) L - 452 la�be�� McKRM , 51 —N V o i N F. P. S- N N Cn O Cl+ O O 1 i - - • - -- ---- - -�--- -- --Y-- , 1 _ E p O 1 1 CoV♦ O Z > � D o Lnn 'TI < C-) Ln = z D ♦f Z V♦ O m m r - o -1 a cr cs N — ZONE r.... O m r z Z Z� O� Vf N N N Uf Vf m m o o Z m • a 3 .Z7 i • . S � C •4 • i C O _{ to „n 3 r a � : �� :g Q • c T r O V Zo- c� fl o e o < O �c a v� . c. L. C r H : • O o 0 v v o o c Ao Z O I x p O O O O O O �� . o • n Z Q Q O O O O O o ~y • / 0 0 < < r • ^ `D Q N � � � to 7• R a N ' • x 1 - - no Y O C. a O,O -D • O a O O O O O O O O _-� Z - O O 0 0 O 0 P= 77' 6-1 Diameter of Stone in Inches 91 -H w ' O- �I- I w Q � cn yc�„ 3^c —c . n o o�'• 1 a < • • CD ^3 30 S C7 --1 O 00 v 1 1 (�• M Z o 0 0 0 _ M MO �g o 25 $ $ $ 8: weight of Stone at 165 lb I. / cu ft. con r-; P Q ., C/3 C- p o � 5' ^= emu• � n . 000NtO F • • � o l • 1 O •• V O OP C4 O m A - N N - C C 3 n ^• • O O O O O O U 0"-' Z CD O O O O O O O O O O O =: v" L.� O o d (n (n 1 T • n cr 7 j Q N o I a • /1 D - O C O 7 s 5 z CO Cn = sc N _ 3 Z z - M Z O � 0 0 0 iJ� N V` V V L. �_� -- . m 1 i I i I t i I 1 I I C G N r- NN - - — 3 o L/ O CP t O O� N N U Y C 0 OM 0 0 0 0 0 � O Z O O 0 0 0 0 0 0 0 O - -T T 0 � O T 3 O N M v f m �. m rn L, N - - vvv x,o S0 0 0 0 •.J N O V 0 0 0 0 7 C o 0 o U o 0 0 0 = o � o 0 0 0 0 0 0 0 0 0 0 � • 0 o u a l CALCULATION PROJECT `'BP"j`:5`r'Q PROJ. NO. ,�D E CLIENT G¢ ►� DATE SUBJECT BY SUBJECT dvTL—K 72-c7TreTi o j CHK.BY REMARKS Zo ►� Z Z- r- v U, G2-4 5 S " E>" ;ST-o,-r F 2-4 zo,JE -z (� x4. S = Zr Js� 7-7' X Z7 6X �o X _ 3<, r� 'j %/ Mq0\4&CRffD CALCULATION PROJECT �0�4 c 7-o JzJ :5 0 e;>- PROJ. NO. CLIENT L�-.JDl COIL DATE 5-0-5 5 SUBJECT ►�� S }r'N�'t`C N�Z 5 � DES, BY Do30 CHK. BY REMARKS d 4 o i = Z- 53 2'2 jC Z 4g�. _ 3.4rj 3. 5 2 (t CALCULATION PROJECT lef 5 y3D• PROJ. NO. CLIENT �-�b�'�� DATE :5-17"1 -1) SUBJECT DES.S -SQ1�5•tl2d- DES. BY CHK. BY REMARKS 41 � «S 7-4 J 12 2-5- 35� 5-5 ! �5 55 ?. 70 McMM&CRffD CALCULATION PROJECT � '7v�J� Su3 �v��o�-� PROJ. NO, CLIENT Ld��M�� DATE �C SUBJECT Ov7�G�r�i o 1 DES. BY CHK. BY REMARKS , X,5 J I i / 9 M qQM CALCULATION PROJECT PROJ. NO. CLIENT DATE 8' SLIBJECT��=�P �� 00T �t O't`64(zz7 DES. BY CHK. BY REMARKS A mcfQ" CALCULATION PROJECT ITG�� r0�-f,✓`r �v�b' S'a",� PROJ. NO. CLIENT �,�1��.�,d�� DATE SUBJECT DES. BY �=� off,= �r�c7 0� CHK. 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