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3854 Watertown Road <br /> 3850 Watertown Road Type 1124hr 10-YR Rainfall=4.25" <br /> Prepared by Sunde Engineering, PLLC. Prfnted 1/fi/2015 <br /> H droCAD�10.00 s/n 02350 8 2013 H droCAD Soflware Solutlons LLC Paae 6 <br /> Device Routinq fnvert Outiet Devices <br /> #1 Primary 1,003.00' 150.Q' long x 3.0' breadth EOF•Over Watertown Road <br /> Head(feet) 0.20 0.40 0.80 0.80 1.00 1.20 1.40 1.60 1.80 2.00 <br /> 2.50 3.00 3.50 4.00 4.50 <br /> Coef. (English) 2.44 2.58 2.68 2.fi7 2.85 2.64 2.64 2.88 2.68 <br /> 2.72 2.81 2.82 2.97 3.07 3.32 <br /> #2 Discarcled 995.80' 0.005 Inlhr E�Itretion over 3urface area <br /> Discarded OutFlow Max=0.01 cfs @ 24.77 hrs HW=999.49' (Free Discharge) <br /> L2=Exflltrat�on {E��tration Corrtrofs OA1 cfs) <br /> Qrlmary OutFlow Max=0.00 cfs Q 0.00 hrs HW=995.95' (Free Discharge} <br /> L1=EOF -Over Watertown Road(Controls 0.00 cfs) <br /> Summary for Pond 4P: Proposed with Draintile <br /> fnflow Area = 20.569 ac, 8.49% Impervious, Inflow Depth = 1.64" far 14-YR event <br /> Inflow = 36.33 cFs � 12.14 hrs, Voiume= 2.807 af <br /> Outflow = 0.85 cfs @ 20.p2 hrs, Volume= 2.804 af, Atten=9896, Lag= 472.8 min <br /> Primary = 0.85 cFs � 20.02 hrs, Volume= 2.804 af <br /> Routing by Stor-Ind method,Time Span=O.OU-72.00 hrs, dt=0.45 hrs <br /> Starting Eiev= 995.95' Surf.Area=4,920 sf Storage=692 cf <br /> Peak Elev= 999.08' @ 20.02 hrs Surf.Area= 59,966 sf Storage= 86,326 cf (85,834 cf above start} <br /> Plug-Fbw detention time= 4,907.4 min calculated for 2.788 af(9996 of inflow) <br /> Center-of-Mass det. time= 1,095.6 min ( 1,956.5 -860.9 ) <br /> Voiume Invert Avail.Storape S#orac�e Description <br /> #9 995.80' S87,821 cf Custom Stage Data(Prtsmatic)Listed beiow(Recalc) <br /> Elevation Surf.Area Inc.Store Cum.Store <br /> (feet) (sq-ft} fcubic-feet) (cubic-feet) <br /> 995.80 4,306 0 0 <br /> 896.OQ 5,125 943 943 <br /> 998.00 31,348 36,473 37,416 <br /> 1,000.00 82,828 114,176 151,592 <br /> 1,002.U4 176,069 198,897 350,489 <br /> 1,aoa.oa 121,263 237,332 5$7,821 <br /> Device Routinq )nvert Outlet Devices <br /> #1 Primary 995.95' 6.0" Round Culvert L=239.0' Ke= 0.500 <br /> Inlet/Outlet Invert= 995.95'/993.60' S= 0.0102 '/' Cc= Q.900 <br /> n=0.012, Flow Area= 0.20 sf <br /> #2 Primary 1,003.00' 150.0' long x 3.0' breadttt EOF-Over Watertown Road <br /> Head (feet) 0.20 0.40 0.60 0.80 'I.00 1.20 9.40 9.60 1.80 2.00 <br /> 2.50 3.00 3.50 4.00 4.50 <br /> Coef. {English) 2.44 2.58 2.68 2.67 2.65 2.64 2.64 2.68 2.68 <br /> 2.72 2.81 2.92 2.97 3.07 3.32 <br />