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6772 <br />160478 HydroCAD MSE 24 -hr 3 10 -Year Rainfall=4.26" <br />Prepared by Microsoft Printed 6/1/2017 <br />HydroCAD®10.00-20 s/n 03113 02017 HydroCAD Software Solutions LLC Page 3 <br />Volume Invert Avail.Storage Storage Description <br />#1 967.80' 137 cf Custom Stage Data (Prismatic)Listed below (Recalc) <br />Elevation Surf.Area Inc.Store Cum.Store <br />(feet) (sq -ft) (cubic -feet) (cubic -feet) <br />967.80 0 0 0 <br />968.00 35 4 4 <br />968.80 300 134 137 <br />Device Routing Invert Outlet Devices <br />#1 Device 2 967.80' 0.4" x 3.0" Horiz. Orifice/Grate X 45.00 C= 0.600 <br />Limited to weir flow at low heads <br />#2 Primary 967.80' 8.0" Round Culvert <br />L= 70.0' CPP, square edge headwall, Ke= 0.500 <br />Inlet/ Outlet Invert= 967.80'/ 966.92' S= 0.0126'/' Cc= 0.900 <br />n= 0.013 Corrugated PE, smooth interior, Flow Area= 0.35 sf <br />Primary OutFlow Max=0.27 cfs @ 12.14 hrs HW=968.09' (Free Discharge) <br />ttCulvert (Inlet Controls 0.27 cfs @ 1.84 fps) <br />1=Orifice/Grate (Passes 0.27 cfs of 0.98 cfs potential flow) <br />Summary for Pond 4P: SW Depression <br />Inflow Area = 0.100 ac, 10.00% Impervious, Inflow Depth > 1.78" for 10 -Year event <br />Inflow = 0.34 cfs @ 12.12 hrs, Volume= 0.015 of <br />Outflow = 0.34 cfs @ 12.14 hrs, Volume= 0.015 af, Atten= 1 %, Lag= 0.9 min <br />Primary = 0.34 cfs @ 12.14 hrs, Volume= 0.015 of <br />Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs <br />Peak Elev= 968.13'@ 12.14 hrs Surf.Area= 77 sf Storage= 11 cf <br />Plug -Flow detention time= 0.5 min calculated for 0.015 of (100% of inflow) <br />Center -of -Mass det. time= 0.4 min ( 790.1 - 789.8 ) <br />Volume Invert Avail.Storage Storage Description <br />#1 967.80' 131 cf Custom Stage Data (Prismatic)Listed below (Recalc) <br />Elevation Surf.Area Inc.Store Cum.Store <br />(feet) (sq -ft) (cubic -feet) (cubic -feet) <br />967.80 0 0 0 <br />968.00 35 4 4 <br />968.80 285 128 131 <br />Device Routing Invert Outlet Devices <br />#1 Device 2 967.80' 0.4" x 3.0" Horiz. Orifice/Grate X 45.00 C= 0.600 <br />Limited to weir flow at low heads <br />#2 Primary 967.80' 8.0" Round Culvert <br />L= 70.0' CPP, square edge headwall, Ke= 0.500 <br />Inlet/ Outlet Invert= 967.80'/ 966.92' S=0.0126'/' Cc= 0.900 <br />n= 0.013 Corrugated PE, smooth interior, Flow Area= 0.35 sf <br />