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160478 HydroCAD MSE24-hr3 10- Year Rainfall=4.26 <br />Prepared by Microsoft Printed 6/1/2017 <br />HydroCAD@ 10.00-20 s/n 03113 @ 2017 HydroCAD Software Solutions LLC Page 3 <br />Volume <br />Invert Avail.Storage Storage <br />Description <br />#1 <br />967.80' <br />137 cf Custom Stage Data (Prismatic)-isted below (Recalc) <br />Elevation <br />Surf.Area <br />Inc.Store <br />Cum.Store <br />(feet) <br />(sq -ft) <br />(cubic -feet) <br />(cubic -feet) <br />967.80 <br />0 <br />0 <br />0 <br />968.00 <br />35 <br />4 <br />4 <br />968.80 <br />300 <br />134 <br />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, FlowArea=0.35sf <br />Primary OutFlow Max=0.27 cfs @ 12.14 hrs HW=968.09' (Free Discharge) <br />'t--2=Culvert (Inlet Controls 0.27 cfs @ 1.84 fps) <br />'t--1 =0 rifi ce/G rate (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 af <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 af <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 af (100% of inflow) <br />Center -of -Mass det. time= 0.4 min ( 790.1 - 789.8 ) <br />Volume <br />Invert Avail.Storage Storage <br />Description <br />#1 <br />967.80' <br />131 cf Custom Stage Data (Prismatic)Listed below (Recalc) <br />Elevation <br />Surf.Area <br />Inc.Store <br />Cum.Store <br />(feet) <br />(sq -ft) <br />(cubic -feet) <br />(cubic -feet) <br />967.80 <br />0 <br />0 <br />0 <br />968.00 <br />35 <br />4 <br />4 <br />968.80 <br />285 <br />128 <br />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, FlowArea=0.35sf <br />