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UWA10002 - Alley Ponding <br />Prepared by {enter your company name here} <br />HydroCAD® 9.10 s/n 01542 © 2009 HydroCAD Software Solutions LLC <br />Summary for Pond 1 P: MH 401 <br />[57] Hint: Peaked at 873.94' (Flood elevation advised) <br />[80] Warning: Exceeded Pond 2P by 5.05' @ 12.03 hrs (13.27 cfs 0.068 af) <br />Inflow Area = 0.880 ac,100.00% Impervious, Inflow Depth > 5.13" for 100 -yr event <br />Inflow = 8.74 cfs @ 12.03 hrs, Volume= 0.376 af <br />Outflow = 8.74 cfs @ 12.03 hrs, Volume= 0.376 af, Atten= 0 %, Lag= 0.0 min <br />Primary = 8.74 cfs @ 12.03 hrs, Volume= 0.376 af <br />Routing by Dyn -Stor -Ind method, Time Span= 5.00 -20.00 hrs, dt= 0.01 hrs <br />Peak Elev= 873.94' @ 12.03 hrs <br />Device Routing Invert Outlet Devices <br />#1 Primary 864.94' 15.0" Round Culvert w/ 7.5" fill <br />L= 26.0' RCP, square edge headwall, Ke= 0.500 <br />Inlet / Outlet Invert= 864.31' / 864.10' S= 0.0081 '/' Cc= 0.900 <br />n= 0.013 Concrete pipe, straight & clean <br />Primary OutFlow Max =8.74 cfs @ 12.03 hrs HW= 873.94' TW =0.00' (Dynamic Tailwater) <br />L1= Culvert (Inlet Controls 8.74 cfs @ 14.24 fps) <br />3 <br />0 <br />4 <br />10 <br />Pond 1P: MH 401 <br />Hydrograph <br />✓ <br />1 1 8.74 cfs <br />8.74 cfs <br />11 12 13 14 <br />Time (hours) <br />15 <br />✓ <br />16 <br />Type 11 24-hr 100 -yr Rainfall = 5.90" <br />Printed 12/1/2010 <br />Page 17 <br />17 <br />r <br />Inflow Area =0.880 ac <br />Peak Elev= 873.94' <br />15.0" <br />Round Culvert <br />w/ 7.5" fill <br />n =0.013 <br />0 <br />L -26.0' <br />S- 0.0081 /' <br />% / // % 1 / / / / // /f <br />18 <br />19 <br />20 <br />❑ Inflow <br />❑ Primary <br />