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MSE 24-hr 3 Rainfall=4.24"10-Yr Proposed <br />Prepared by Schultz Engineering And Site Design <br />Page 16HydroCAD® 10.10-4b s/n 11475 © 2020 HydroCAD Software Solutions LLC <br />Elevation Surf.Area Inc.Store Cum.Store <br />(feet) (acres) (acre-feet) (acre-feet) <br />935.80 0.015 0.000 0.000 <br />936.00 0.017 0.003 0.003 <br />937.00 0.026 0.022 0.025 <br />938.00 0.036 0.031 0.056 <br />938.80 0.046 0.033 0.089 <br />939.00 0.048 0.009 0.098 <br />940.00 0.061 0.054 0.152 <br />941.00 0.076 0.068 0.221 <br />Device Routing Invert Outlet Devices <br />#1 Primary 933.80'12.0" Round Culvert <br />L= 14.0' CMP, square edge headwall, Ke= 0.500 <br />Inlet / Outlet Invert= 933.80' / 933.52' S= 0.0200 '/' Cc= 0.900 <br />n= 0.012, Flow Area= 0.79 sf <br />#2 Device 1 938.80'12.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads <br />#3 Device 1 935.80'0.800 in/hr Exfiltration over Surface area <br />Primary OutFlow Max=0.64 cfs @ 12.43 hrs HW=939.19' TW=0.00' (Dynamic Tailwater) <br />1=Culvert (Passes 0.64 cfs of 8.36 cfs potential flow) <br />2=Orifice/Grate (Orifice Controls 0.60 cfs @ 2.13 fps) <br />3=Exfiltration (Exfiltration Controls 0.04 cfs) <br />Summary for Pond STMH2: <br />Inflow Area = 0.100 ac,100.00% Impervious, Inflow Depth > 4.00" <br />Inflow = 0.62 cfs @ 12.12 hrs, Volume= 0.033 af <br />Outflow = 0.62 cfs @ 12.12 hrs, Volume= 0.033 af, Atten= 0%, Lag= 0.0 min <br />Primary = 0.62 cfs @ 12.12 hrs, Volume= 0.033 af <br />Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs <br />Peak Elev= 939.63' @ 12.12 hrs <br />Device Routing Invert Outlet Devices <br />#1 Primary 939.24'12.0" Round Culvert <br />L= 22.0' CMP, square edge headwall, Ke= 0.500 <br />Inlet / Outlet Invert= 939.24' / 938.80' S= 0.0200 '/' Cc= 0.900 <br />n= 0.012, Flow Area= 0.79 sf <br />Primary OutFlow Max=0.59 cfs @ 12.12 hrs HW=939.63' TW=938.56' (Dynamic Tailwater) <br />1=Culvert (Inlet Controls 0.59 cfs @ 2.12 fps) <br />Summary for Link L1: <br />Inflow Area = 0.828 ac, 55.43% Impervious, Inflow Depth > 2.02" <br />Inflow = 0.81 cfs @ 12.37 hrs, Volume= 0.139 af <br />Primary = 0.81 cfs @ 12.37 hrs, Volume= 0.139 af, Atten= 0%, Lag= 0.0 min <br />Primary outflow = Inflow, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs