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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 />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 />1,521 98 Paved parking, HSG B <br />2,102 61 >75% Grass cover, Good, HSG B <br />3,623 77 Weighted Average <br />2,102 58.02% Pervious Area <br />1,521 41.98% Impervious Area <br />Tc Length Slope Velocity Capacity Description <br />(min) (feet) (ft /ft) (ft /sec) (cfs) <br />5.0 <br />0.147' <br />0.13 <br />0.12 <br />/ <br />0.1 <br />0.091 <br />0.06 - <br />0.05 <br />0.04 <br />0.03 <br />0 <br />Summary for Subcatchment 13S: Direct Discharge #4 <br />0.13 cfs @ 11.96 hrs, Volume= <br />L <br />L <br />Subcatchment 13S: Direct Discharge #4 <br />Hydrograph <br />L <br />L <br />I I I <br />- <br />--- r - <br />--- --- - r - - - F <br />I I 1 <br />1 <br />JO <br />I I 1 <br />I I 1 <br />I I 1 <br />1 <br />- 1 - - - - r - - - 7 - - -- 1 I - -- 7 <br />0.02— 1 1 <br />- - - 1 - - - - - - - - I - - - / I <br />0. 011 // ///////////////// <br />10 <br />11 <br />1 0.13 <br />Direct Entry, <br />L <br />1 <br />12 13 14 <br />Time (hours) <br />0.006 af, Depth> 0.81" <br />i <br />Type 11 24-hr 2yyr <br />Rai ryfaFI =2.75" <br />Run ffy4re i 3;623 sf - <br />'Runoff 'VoCume_0.pU6; of <br />Runoff Depth 0.81 " <br />T 5.0 rrtira -- <br />CN =77 <br />L i L <br />1 1 1 <br />t 1 1 <br />15 <br />16 <br />Type 11 24-hr 2 -yr Rainfall= 2.75" <br />Printed 12/1/2010 <br />Page 26 <br />17 <br />18 <br />19 <br />L <br />20 <br />❑ Runo <br />