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, <br /> C:\Program Files\HydroCAD�Projects\HydroCAD Proje�ts\08 JOBS\ <br /> 08175B Barry Sewall Proposed Conditions May 13, 2008 Type Il 24-hr 10 Year Rainfa11=4.20" <br /> Prepared by Gronberg 8�Associates, Inc. Printed 5/20/2009 9:31:36 AM <br /> HydroCAD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Paae 17 <br /> Summary for Pond 3P: Pond 3, Area 4 <br /> Inflow Area = 2.726 ac, 11.59% Impervious, Inflow Depth > 0.32" for 10 Year event <br /> Inflow = 1.43 cfs� 12.03 hrs, Volume= 0.073 af <br /> Outflow = 0.43 cfs� 12.22 hrs, Volume= 0.072 af, Atten= 70%, Lag= 11.7 min <br /> Primary = 0.43 cfs cLD 12.22 hrs, Volume= 0.072 af <br /> Routing by Stor-Ind method, Time Span=5.00-20.00 hrs, dt=0.05 hrs <br /> Peak Elev= 933.40'� 12.22 hrs Surf.Area= 0.020 ac Storage= 0.021 af <br /> Plug-Flow detention time=25.1 min calculated for 0.072 af(98%of inflow) <br /> Center-of-Mass det. time= 19.3 min (833.9-814.6) <br /> Volume Invert Avail.Storage Storage Description <br /> . #1 932.00' 0.066 af Custom Stage Data(Prismatic) Listed below(Recalc) <br /> Elevation Surf.Area Inc.Store Cum.Store <br /> (feet) (acres) (acre-feet) (acre-feet) <br /> 932.00 0.010 0.000 0.000 <br /> 934.00 0.024 0.034 0.034 <br /> 935.00 0.040 0.032 0.066 <br /> Device Routing Invert Outlet Devices <br /> #1 Primary 932.00' 4.0" Round Culvert <br /> L=22.0' CPP, end-section conforming to fill, Ke=0.500 <br /> Outlet Invert= 931.81' S= 0.0086'P C�0.900 <br /> n= 0.010 PVC, smooth interior <br /> Primary OutFlow Max=0.43 cfs @ 12.22 hrs HW=933.40' (Free Discharge) <br /> L1=Culvert (Barrel Controls 0.43 cfs cL'D 4.97 fps) <br />