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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 />Runoff <br />Summary for Subcatchment 1S: RD 406A DA <br />1.33 cfs @ 11.96 hrs, Volume= <br />Runoff by SCS TR -20 method, UH =SCS, Time Span= 5.00 -20.00 hrs, dt= 0.01 hrs <br />Type II 24 -hr 100 -yr Rainfall = 5.90" <br />Tc Length Slope Velocity Capacity Description <br />(min) (feet) (ft /ft) (ft /sec) (cfs) <br />5.0 <br />0 <br />LL <br />Area (sf) CN Description <br />6,695 98 Paved parking, HSG C <br />6,695 100.00% Impervious Area <br />Hydrograph <br />Direct Entry, <br />Subcatchment 1S: RD 406A DA <br />1/ <br />I/ <br />i0 <br />6 7 8 9 10 11 12 13 14 <br />Time (hours) <br />Type 11 24-hr 100 -yr Rainfall = 5.90" <br />Printed 12/1/2010 <br />Page 7 <br />0.066 af, Depth> 5.18" <br />Type f 124 -h r 100-yr <br />Rainfall=5.90" <br />Runoff Area=6,695-sf <br />Runoff Volume- 0.066 af <br />Runoff Depth >5.18" <br />Tc =5.0 Min <br />QN=98 <br />15 <br />16 <br />17 <br />18 <br />19 <br />20 <br />Runoff <br />