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Type II 24-hr 2-year Rainfall=2.79"25018 Existing Hydro <br /> Printed 10/29/2025Prepared by Land & Resource Consulting Inc <br />Page 4HydroCAD® 10.20-7a s/n 12643 © 2025 HydroCAD Software Solutions LLC <br />Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points <br />Runoff by SCS TR-20 method, UH=SCS, Weighted-Q <br />Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method <br />Runoff Area=20,400 sf 0.00% Impervious Runoff Depth=1.75"Subcatchment 1S: Site to Lowpoint <br /> Tc=7.0 min CN=WQ Runoff=1.29 cfs 2,982 cf <br />Runoff Area=8,700 sf 0.00% Impervious Runoff Depth=1.95"Subcatchment 2S: Site to East <br /> Tc=7.0 min CN=WQ Runoff=0.61 cfs 1,413 cf <br />Runoff Area=14,400 sf 19.44% Impervious Runoff Depth=2.21"Subcatchment 3S: Offsite North to <br /> Tc=7.0 min CN=WQ Runoff=1.13 cfs 2,656 cf <br />Runoff Area=8,100 sf 24.69% Impervious Runoff Depth=1.99"Subcatchment 4S: Offsite Southwest to <br /> Tc=7.0 min CN=WQ Runoff=0.57 cfs 1,345 cf <br />Runoff Area=500 sf 0.00% Impervious Runoff Depth=2.35"Subcatchment 5S: Site to Road <br /> Tc=7.0 min CN=96 Runoff=0.04 cfs 98 cf <br /> Inflow=3.28 cfs 8,350 cfReach 1R: Site Total <br /> Outflow=3.28 cfs 8,350 cf <br /> Inflow=2.72 cfs 6,937 cfReach 2R: Site to West <br /> Outflow=2.72 cfs 6,937 cf <br />Avg. Flow Depth=0.30' Max Vel=5.74 fps Inflow=1.13 cfs 2,656 cfReach 3R: Driveway Culvert <br />12.0" Round Pipe n=0.013 L=30.0' S=0.0267 '/' Capacity=5.82 cfs Outflow=1.13 cfs 2,656 cf <br />Peak Elev=955.09' Storage=805 cf Inflow=3.00 cfs 6,982 cfPond 1P: Onsite Lowpoint <br />18.0" Round Culvert n=0.013 L=56.0' S=0.0184 '/' Outflow=2.69 cfs 6,839 cf <br />Total Runoff Area = 52,100 sf Runoff Volume = 8,492 cf Average Runoff Depth = 1.96" <br />90.79% Pervious = 47,300 sf 9.21% Impervious = 4,800 sf