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<br />PHASE 1 INITIAL PAD & COLLECTION <br />Prepared by Greg Lewicki & Associates <br />Type 11 24-hr Rainfall=2.90" <br />Page 5 <br />Subcatchment G1: INITIAL PAD DEVELOPMENT <br />[49] Hint: Tc<2dt may require smaller dt <br />Runoff = 4.99 cfs @ 11.96 hrs, Volume= 0.243 af, Depth= 1.81" <br />Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-30.00 hrs, dt= 0.05 hrs <br />Type II 24-hr Rainfall=2.90" <br />Area (ac) CN Description <br />1.610 89 Dirt Pad HSG D <br />1.610 Pervious Area <br />Tc Length Slope Velocity Capacity Description <br />(min) (feet) {ft/ft) (ft/sec) (cfs) <br />5.7 570 0.0667 1.66 LagICN Method, <br />Subcatchment G1: INITIAL PAD DEVELOPMENT <br />Hydrograph <br /> <br />l; <br />LL <br />4.99 cfs <br />5- <br />Runoff--4.99 cfs <br />Type II 24-hr <br />4 Rainfall=2.90" <br />Runoff Area=1.610 ac <br />3 Runoff Volume=0.243 of <br />Runoff Depth=1.81" <br />2 Flow Length=570' <br />Slope=0.0667 '/' <br />Tc=5.7 min <br />1 CN=89 <br />o, <br />1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 <br />rime (boon) <br />-Runoff <br /> <br />