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UWA10002 - Proposed Type 11 24-hr 1" Event Rainfall =1.00" <br />Prepared by {enter your company name here} Printed 12/1/2010 <br />HydroCAD® 9.10 s/n 01542 © 2009 HydroCAD Software Solutions LLC Page 7 <br />Summary for Subcatchment 3S: Drainage Area #3 <br />[49] Hint: Tc <2dt may require smaller dt <br />Runoff = 1.39 cfs @ 11.96 hrs, Volume= 0.059 af, Depth> 0.41" <br />Runoff by SCS TR -20 method, UH =SCS, Time Span= 5.00 -20.00 hrs, dt= 0.05 hrs <br />Type II 24 -hr 1" Event Rainfall= 1.00" <br />N <br />0 <br />LL <br />Area (sf) CN Description <br />64,715 98 Paved parking, HSG B <br />9,671 61 >75% Grass cover, Good, HSG B <br />74,386 93 Weighted Average <br />9,671 13.00% Pervious Area <br />64,715 87.00% Impervious Area <br />Tc Length Slope Velocity Capacity Description <br />(min) (feet) (ft /ft) (ft /sec) (cfs) <br />5.0 Direct Entry, <br />Subcatchment 3S: Drainage Area #3 <br />Hydrograph <br />1139 cfs I <br />Type 11 24 -hr 1" Event <br />Rainfall_ 1.00" <br />Runoff Area =74,386 sf <br />Runoff Volume= 0.059 af <br />Runoff Depth >0.41" <br />Tc =5.0 min <br />CN =93 <br />10 11 12 13 14 15 16 17 18 19 20 <br />Time (hours) <br />❑ Runo <br />