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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 5 <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 1" Event Rainfall= 1.00" <br />Area (sf) CN Description <br />27,665 98 Paved parking, HSG B <br />9,110 61 >75% Grass cover, Good, HSG B <br />36,775 89 Weighted Average <br />9,110 24.77% Pervious Area <br />27,665 75.23% Impervious Area <br />Tc Length Slope Velocity Capacity Description <br />(min) (feet) (ft /ft) (ft /sec) (cfs) <br />5.0 Direct Entry, <br />0.341 ▪ L <br />- -- L---- L --- L - - - - L <br />I I I I I <br />0.321 <br />-I I -11 r r <br />0.3 1 1 I I <br />0.28 / - 1� - Li <br />I 1 I I <br />0.11 <br />0.081 r- - - -r -- r r r r <br />0.06 ' - I I I I I I <br />0.041 I <br />0.02= / / / / / / / / / / / / / / / / / / / / / / / / / / / / /// <br />0 <br />5 <br />Summary for Subcatchment 1S: Drainage Area #1 <br />0.42 cfs @ 11.97 hrs, Volume= <br />0.018 af, Depth> 0.26" <br />Subcatchment 15: Drainage Area #1 <br />Hydrograph <br />1 - r 1 <br />I I I I <br />- R- Unorff A =36;_775rsf <br />'Burton Notume= :O1 iaf - <br />r Runoff De " - <br />Td m <br />✓ L <br />✓ I r I r <br />I r I r Ir <br />+ + <br />r r r r <br />I I I I <br />0.4E_ 1 <br />0.441 r r L L r 1 0.42 cfs I 1 I I r <br />0.42 I I I ' I I ty� - II 4 h r - 1 " - Event - - <br />0.4_' I I I <br />_ , I I I I I I I I Ii � 4 �iq <br />0. 381 Ralnfaf�l.Qfl`� <br />0.361 ▪ - --- r ---- r --- r - --- r -- r -- - r - r I r I r <br />10 <br />11 <br />12 13 14 <br />Time (hours) <br />15 <br />16 <br />17 <br />18 <br />19 <br />20 <br />❑ Runo <br />