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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 8S: RD 410B DA <br />2.57 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 />Area (sf) CN Description <br />12,918 98 Paved parking, HSG C <br />12,918 100.00% Impervious Area <br />Tc Length Slope Velocity Capacity Description <br />(min) (feet) (ft /ft) (ft /sec) (cfs) <br />5.0 <br />3 <br />0 <br />LL <br />ydrograph <br />Direct Entry, <br />Subcatchment 8S: RD 410B DA <br />Type 11 24-hr 100 -yr Rainfall = 5.90" <br />Printed 12/1/2010 <br />Page 14 <br />0.128 af, Depth> 5.18" <br />,$0 <br />0 <br />ii <br />Type 1124-hr 100 -yr <br />Rainfall 5.90" <br />Runoff Area =12,918 sf <br />Runoff'; Volume = 0.128 af <br />Runoff Depth >5.18" <br />Tc =50 min <br />CN =98 <br />10 <br />11 <br />12 13 14 15 <br />Time (hours) <br />16 <br />17 <br />18 <br />19 <br />20 <br />❑ Runo <br />