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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 12P: MH 410 <br />[82] Warning: Early inflow requires earlier time span <br />[57] Hint: Peaked at 869.72' (Flood elevation advised) <br />[80] Warning: Exceeded Pond 13P by 0.42' @ 11.97 hrs (2.44 cfs 0.046 af) <br />[80] Warning: Exceeded Pond 14P by 0.19' @ 12.12 hrs (1.67 cfs 0.029 af) <br />Inflow Area = 0.345 ac,100.00% Impervious, Inflow Depth > 5.17" for 100 -yr event <br />Inflow = 2.57 cfs @ 11.96 hrs, Volume= 0.149 af <br />Outflow = 2.57 cfs @ 11.96 hrs, Volume= 0.149 af, Atten= 0 %, Lag= 0.0 min <br />Primary = 2.57 cfs @ 11.96 hrs, Volume= 0.149 af <br />Routing by Dyn -Stor -Ind method, Time Span= 5.00 -20.00 hrs, dt= 0.01 hrs <br />Peak Elev= 869.72' @ 11.97 hrs <br />Type 11 24 100 - yr Rainfall = 5.90" <br />Printed 12/1/2010 <br />Page 32 <br />Device Routing Invert Outlet Devices <br />#1 Primary 865.33' 12.0" Round Culvert <br />L= 32.0' RCP, square edge headwall, Ke= 0.500 <br />Inlet / Outlet Invert= 865.33' / 865.01' S= 0.0100 '/' Cc= 0.900 <br />n= 0.013 Concrete pipe, straight & clean <br />Primary OutFlow Max =2.46 cfs @ 11.96 hrs HW= 869.68' TW= 869.26' (Dynamic Tailwater) <br />L1= Culvert (Inlet Controls 2.46 cfs @ 3.14 fps) <br />N <br />0 <br />0 <br />u. <br />Pond 12P: MH 410 <br />Hydrograph <br />2.57 I <br />100 <br />100 <br />0 <br />10 11 12 13 14 <br />Time (hours) <br />Inflow Area =0.345 ac <br />Peak Elev= 869.72' <br />12.0" <br />Round Culvert <br />n =0.013 <br />L- 32.0' <br />s =0.0100 /' <br />15 <br />16 <br />17 <br />18 <br />19 <br />20 <br />❑ Inflow <br />❑ Primary <br />