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<br />2058.0010 Prop Drain <br />Prepared by {enter your company name here} <br />HydroCA[)@ 8.00 sin 001304 @ 2006 HydroCAD Soltware Solutions LLC <br /> <br />Type II 24-hr 2- Year; 24 hour Rainfal/=2.70" <br />Page 3 <br />9/18/2007 <br /> <br />Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points <br />Runoff by SCS TR-20 method. UH=SCS <br />Reach routing by Stor-Ind+ Trans method - Pond routing by Stor-Ind method <br /> <br />Subeatehment 15: East area and wetland Runoff Area=74,861 sl Runoff Depth=1.09" <br />Flow Length=485' Slope=0.0082 'I' Tc=6.0 min CN=81 Runoff=3.35 cIs 0.156 al <br /> <br />Subcatehment 25: Proposed Drainage Area to Pond Runoff Area=59,361 sl Runoff Depth=1.97" <br />Flow Length=450' Tc=5.4 min CN=93 Runoff=4.64 cIs 0.224 al <br /> <br />Reach 3R: Drainage to offsite <br /> <br />Inflow=3.77 cIs 0.366 al <br />Outflow=3.77 cfs 0.366 al <br /> <br />Pond 4P: Storm pond <br /> <br />Peak Elev=901.44' Storage=26,967 cl Inflow=4.64 cIs 0.224 al <br />Outflow=1.13 cIs 0.224 af <br /> <br />Pond 5P: Biofiltration area <br /> <br />Peak Elev=900.60' Storage=838 cf Inllow=1.13 cfs 0.224 af <br />Outflow=1.10 cIs 0.210 al <br /> <br />Total Runoff Area = 3.081 ae Runoff Volume = 0.379 af Average Runoff Depth = 1.48" <br />57.55% Pervious Area = 1.773 ae 42.45% Impervious Area = 1.308 ae <br />