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UWA10002 - Proposed <br />Prepared by {enter your company name here} <br />HydroCAD® 9.10 s/n 01542 © 2009 HydroCAD Software Solutions LLC <br />[49] Hint: Tc <2dt may require smaller dt <br />Runoff <br />0.07 cfs @ 11.97 hrs, Volume= <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 (sf) CN Description <br />888 98 Paved parking, HSG B <br />1,763 61 >75% Grass cover, Good, HSG B <br />2,651 73 Weighted Average <br />1,763 66.50% Pervious Area <br />888 33.50% Impervious Area <br />Tc Length Slope Velocity Capacity Description <br />(min) (feet) (ft /ft) (ft /sec) (cfs) <br />5.0 Direct Entry, <br />0.08 <br />- I <br />0.075 <br />0.07 I� <br />0.065 = I <br />I <br />0.06 <br />0.055- L L <br />0.05= <br />3 - .'I <br />▪ 0 <br />I I <br />.045 <br />• 0.04 = <br />• 0.035 <br />0.031 <br />0.025- <br />0.02 <br />�T I <br />Summary for Subcatchment 12S: Direct Discharge #3 <br />0.003 af, Depth> 0.63" <br />Subcatchment 12S: Direct Discharge #3 <br />Hydrograph <br />0.07 cfs <br />Type 11 24-hr 2 -yr Rainfall= 2.75" <br />Printed 12/1/2010 <br />Page 25 <br />Type-11 2 <br />Ru n Area =2,651 sf Runoff Vo1 a mo= O.003 of <br />Runoff Depth 163" <br />Td=-5M ON = 73 <br />L L L <br />0.0157 <br />0.017 <br />��� <br />0 <br />5 6 7 8 9 10 11 12 13 14 15 <br />Time (hours) <br />16 <br />17 <br />18 <br />19 <br />H I <br />20 <br />❑ Runo <br />