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� 4 I <br /> 3850 Watertown Road <br /> 3850 Watertown Road Type 1l 24-hr 90Q-YR RalnfaU=7.27" <br /> Prepared by Sunde Engineering, PLLC. Printed 1/6/2015 <br /> HydroCAD�1Q00 s/n 02350 0 2013�droCAD Software Sofutions LLC Pa�e 11 <br /> Device Routinq Invert Outlet Devices <br /> #1 Primary 1,003.00' 130.0' long x 3.0' breadth EOF -Over Watertown Road <br /> Head (feet} 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.80 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 /> #2 Discarded 995.80' 0.005 Inlhr E�Itration over Surface area <br /> �scarded OutFlow Max=0.01 cfs � 24.81 hrs HW=1,001.24' (Free Discharge) <br /> 2=E�Itration (E�Itration Controls 0.01 cfs) <br /> Qrimary OutFlow Max=0.00 cfs � 0.00 hrs HW=995.95' (Free Discharge) <br /> z-1=EOF -Over Wstertown Road( Controls 0.00 cfs} <br /> Summary far Pond 4P: Proposed with Draintile <br /> Inflow Area = 20.569 ac, 8.49°�6 Impervio�.�s, lnfbw Depth = 4.06" for 10U-YR event <br /> Inflow = 92.31 cfs @ 12.13 hrs, Volume= 6.959 af <br /> Outflow = 1.01 cFs (t� 24.22 hrs, Volume= 4.835 af, Atten= 99%, Lag=725.6 min <br /> Primary = 1.01 cfs� 24.22 hrs, Volume= 4.835 af <br /> Routing by Stor-Ind method,Time Span=0.00-72.00 hrs, dt= 0.05 hrs <br /> Starting Elew 995.95' Surf.Area=4,920 sf Storage=692 cf <br /> Peak Elev= 1,001,12' � 24.22 hrs SurF.Area= 101,444 sf Storage=254,765 cf (254,073 cf above start) <br /> Plug-Flow deterrtion time= 1,708.0 min calculated for 4.815 af(69% of inflow) <br /> Center-of-Mass det.time= 1,599.6 min( 2,434.2-834.6 ) <br /> Volume Invert AvaIl.Storaqe Storaqe Description <br /> #1 995.$0' S87,821 cf Custom Stage Data (Prismatic)Listed beiow (Recalc) <br /> Elevation Surf.Area Inc.Store Cum.Store <br /> (fe�t) (sq-ft} (cubic feet) (cubi�f� <br /> 995.80 4,306 0 0 <br /> 998.00 5,125 943 943 <br /> 998.00 31,348 36,473 37,416 <br /> 1,000.00 82,828 114,176 151,592 <br /> 1,002.00 116,069 198,897 350,489 <br /> 1,004.00 121,263 237,332 587,821 <br /> Device Rautinq Invert Outlet Devices <br /> #1 Primary 995.95' 6.0" Round Culvert L= 231.0' Ke= 0.500 <br /> )nlet/Outlet Invert= 995.95'/993.60' S=0.0102 '/' Cc= 0.900 <br /> n=0.012, Flow Area= 0.20 sf <br /> #2 Primary 1,003.00' 950.0' Iong x 3.0' breadth EOF-Over Watertown Road <br /> Head (feet) 0.20 0.40 0.60 0.80 i.00 1.20 1.40 1.60 1.80 2.00 <br /> 2.50 3.00 3.50 4.p0 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.$1 2.92 2.97 3.07 3.32 <br />