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Benedicting Innsbruck Hydro MN-New Brighton 24-hr S1 2-yr Rainfall=2.84" Prepared by Sunde Engineering Printed 2/13/2020 HydroCAD® 10.00-20 s/n 02350 ©2017 HydroCAD Software Solutions LLC Page 17 Peak Elev= 938.01' @ 12.04 hrs Device Routing Invert Outlet Devices #1 Primary 936.31' 18.0" Round Culvert L= 66.0' RCP, sq.cut end projecting, Ke= 0.500 Inlet/ Outlet Invert= 936.31' /936.11' S= 0.0030 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 1.77 sf Primary OutFlow Max=6.37 cfs @ 12.04 hrs HW=937.98' (Free Discharge) 4-1=Culvert (Barrel Controls 6.37 cfs @ 4.04 fps) Summary for Pond 3P: Inflow Area = 96,546 sf, 79.81% Impervious, Inflow Depth = 2.16" for 2-yr event Inflow = 6.08 cfs @ 12.04 hrs, Volume= 17,403 cf Outflow = 6.08 cfs @ 12.04 hrs, Volume= 17,403 cf, Atten= 0%, Lag= 0.0 min Primary = 6.08 cfs @ 12.04 hrs, Volume= 17,403 cf Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 937.97' @ 12.04 hrs Device Routing Invert Outlet Devices #1 Primary 936.38' 18.0" Round Culvert L= 25.0' RCP, sq.cut end projecting, Ke= 0.500 Inlet/Outlet Invert= 936.38' /936.31' S= 0.0028 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 1.77 sf Primary OutFlow Max=5.95 cfs @ 12.04 hrs HW=937.95' (Free Discharge) L1=Culvert (Barrel Controls 5.95 cfs @ 4.01 fps) Summary for Pond 4P: Inflow Area = 83,887 sf, 79.24% Impervious, Inflow Depth = 2.16" for 2-yr event Inflow = 5.09 cfs @ 12.04 hrs, Volume= 15,087 cf Outflow = 5.09 cfs @ 12.04 hrs, Volume= 15,087 cf, Atten= 0%, Lag= 0.0 min Primary = 5.09 cfs @ 12.04 hrs, Volume= 15,087 cf Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 939.85' @ 12.04 hrs Device Routing Invert Outlet Devices #1 Primary 937.26' 15.0" Round Culvert L= 291.0' RCP, sq.cut end projecting, Ke= 0.500 Inlet/ Outlet Invert= 937.26' /936.38' S= 0.0030 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 1.23 sf Primary OutFlow Max=4.99 cfs @ 12.04 hrs HW=939.76' (Free Discharge) 4-1=Culvert (Barrel Controls 4.99 cfs @ 4.07 fps)