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C:\Program FileslHydroCAD\ProjectsWydroCAD Projects\08 JOBS\ <br /> 081756 Barry Sewail Proposed Conditions May 13, 2009 Type ll 24-hr 100 Year Rainfa11=6.00" <br /> Prepared by Gronberg &Associates, Inc. Printed 5/20/2009 9:31:36 AM <br /> HydroCHD�9.00 s/n 04529 �2009 HydroCAD Software Solutions LLC Pa�e 25 <br /> Summary for Pond 3P: Pond 3, Area 4 <br /> Inflow Area= 2.726 ac, 11.59% Impervious, Inflow Depth > 0.97" for 100 Year event <br /> Inflow = 2.95 cfs a� 12.02 hrs, Volume= 0.221 af <br /> Outflow = 0.61 cfs� 12.29 hrs, Volume= 0.218 af, Atten= 79%, Lag= 16.1 min <br /> Primary = 0.61 cfs� 12.29 hrs, Volume= 0.218 af <br /> Routing by Stor-Ind method, Time Span=5.00-20.00 hrs, dt= 0.05 hrs <br /> Peak Elev= 934.64'� 12.29 hrs SurF.Area= 0.034 ac Storage= 0.053 af <br /> Plug-Flow detention time= 31.6 min calculated for 0.217 af(98% of inflow) <br /> Center-of-Mass det. time=26.4 min (897.3-870.8) <br /> Volume InveR 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 Cc= 0.900 <br /> n=0.010 PVC, smooth interior <br /> Primary OutFlow Max=0.61 cfs @ 12.29 hrs HW=934.64' (Free Discharge) <br /> 'L1=Culvert (Barrel Controls 0.61 cfs @ 7.02 fps) <br />