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• <br />• <br />PHASE 1 INITIAL PAD & COLLECTION Type Il 24-hr Rainfall=2.90" <br />Prepared by Greg Lewicki & Associates Page 7 <br />HydroCADO 8.00 s/n 004412 0 2006 HydroCAD Software Solutions LLC 4/17/2007 <br />Reach G1-a: INITIAL COLLECTION DITCH <br />Inflow Area = 1.610 ac, Inflow Depth = 1.81" <br />Inflow = 4.99 cfs @ 11.96 hrs, Volume= 0.243 of <br />Outflow = 4.78 cfs @ 11.99 hrs, Volume= 0.243 af, Atten= 4%, Lag= 1.7 min <br />Routing by Stor-Ind+Trans method, Time Span= 1.00-30.00 hrs, dt= 0.05 hrs <br />Max. Velocity= 7.53 fps, Min. Travel Time= 1.0 min <br />Avg. Velocity = 2.65 fps, Avg. Travel Time= 2.8 min <br />Peak Storage= 294 cf @ 11.98 hrs, Average Depth at Peak Storage= 0.57' <br />Bank-Full Depth= 0.75', Capacity at Bank-Full= 10.23 cfs <br />0.00' x 0.75' deep channel, n= 0.022 Earth, clean & straight <br />Side Slope Z-value= 2.07 Top Width= 3.00' <br />Length= 450.0' Slope= 0.07787' <br />Inlet Invert= 7,082.00', Outlet Invert= 7,047.00' <br />5 <br />4 <br />3 <br />3 <br />0 <br />U. <br />2 <br />1 <br />Reach G1-a: INITIAL COLLECTION DITCH <br />Hydrograph <br />Inflow Area=1.610 ac <br />Inflow=4.99 cfs <br />Outflow=4.78 cfs <br />Avg. Depth=0.57' <br />Max Vet=7.53 fps <br />n=0.022 <br />L=450.0' <br />S=0.0778'1' <br />Capacity=10.23 cfs <br />0 <br />1 2 3 4 5 6 <br />7 5 8 1U 11 1L 11 14 1o to ti to to Gv Gt cG Go G+ c., ?? ?. ?- <br />Time (hours) <br />Inflow <br />outflow <br />•