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11586 SPENSA-ORONO Type 11 24-hr 10 yr Rainfall=4.20" <br /> Prepared by {enter your company name here} Page 9 <br /> HydroCAD®8.00 s/n 000837 ©2006 HydroCAD Software Solutions LLC 5/18/2009 <br /> Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 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 /> Subcatchment 1P: PROPOSED RunoffArea=42,540 sf Runoff Depth>3.01" <br /> Tc=10.0 min CN=91 Runoff=4.52 cfs 0.245 of <br /> Subcatchment 1S: EXISTING Runoff Area=30,350 sf Runoff Depth>2.91" <br /> Tc=12.0 min CN=90 Runoff=2.96 cfs 0.169 of <br /> Reach 1R: (new Reach) Inflow=2.96 cfs 0.169 of <br /> Outflow=2.96 cfs 0.169 of <br /> Pond RAIN G: POND 1 Peak Elev=1,023.50' Storage=4,430 cf Inflow=4.52 cfs 0.245 of <br /> Discarded=0.04 cfs 0.036 of Primary=5.12 cfs 0.107 of Outflow=5.16 cfs 0.143 of <br /> Total Runoff Area= 1.673 ac Runoff Volume=0.414 of Average Runoff Depth =2.97" <br /> 39.17% Pervious Area=0.655 ac 60.83%Impervious Area= 1.018 ac <br />