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UWA10002 - Existing <br />Prepared by {enter your company name here} <br />HydroCAD® 9.10 s/n 01542 © 2009 HydroCAD Software Solutions LLC <br />Summary for Subcatchment 1S: Existing <br />[49] Hint: Tc <2dt may require smaller dt <br />Runoff = 1.56 cfs @ 12.00 hrs, Volume= 0.094 af, Depth> 0.23" <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 2 -yr Rainfall= 2.75" <br />Area (ac) CN Description <br />0.050 98 Paved parking, HSG B <br />4.830 61 >75% Grass cover, Good, HSG B <br />4.880 61 Weighted Average <br />4.830 98.98% Pervious Area <br />0.050 1.02% Impervious Area <br />Tc Length Slope Velocity Capacity Description <br />(min) (feet) (ft /ft) (ft /sec) (cfs) <br />N <br />0 <br />LL <br />5.0 <br />10 <br />11 <br />56 cfs <br />Direct Entry, <br />Subcatchment 1S: Existing <br />Hydrograph <br />12 13 14 <br />Time (hours) <br />15 <br />16 <br />Type 11 24-hr 2 -yr Rainfall=2. 75" <br />Printed 12/1/2010 <br />Page 5 <br />Type 1124-hr 2 -yr <br />Rainfall 2.75" <br />Runoff Area =4.880 ac <br />Runoff Volume =0.094 of <br />Runoff Depth >0.23" <br />Tc =5.0 min <br />CN =61 <br />17 <br />18 <br />19 <br />20 <br />❑ Runo <br />