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WNY-2500056.00_HydroCAD extreme_precip_tables_output (29) 24-hr S1 1-yr Rainfall=1.88" Prepared by Greenman-Pedersen, Inc Printed 12/18/2025 HydroCAD® 10.20-7a s/n 04560 © 2025 HydroCAD Software Solutions LLC Page 7 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment ATO: Area to Offsite Runoff Area=0.190 ac 0.00% Impervious Runoff Depth>0.49" Flow Length=60' Slope=0.0050 '/' Tc=30.0 min CN=80 Runoff=0.06 cfs 0.008 af Subcatchment DA 1: Drainage Area 1 Runoff Area=0.060 ac 100.00% Impervious Runoff Depth>1.66" Flow Length=80' Slope=0.0100 '/' Tc=1.6 min CN=98 Runoff=0.17 cfs 0.008 af Subcatchment DA 2: Drainage Area 2 Runoff Area=0.010 ac 100.00% Impervious Runoff Depth>1.66" Flow Length=35' Slope=0.0100 '/' Tc=0.8 min CN=98 Runoff=0.03 cfs 0.001 af Subcatchment DA 3: Drainage Area 3 Runoff Area=0.150 ac 93.33% Impervious Runoff Depth>1.55" Flow Length=75' Slope=0.0100 '/' Tc=7.2 min CN=97 Runoff=0.33 cfs 0.019 af Subcatchment DA 4: Drainage Area 4 Runoff Area=0.080 ac 87.50% Impervious Runoff Depth>1.46" Flow Length=20' Slope=0.0100 '/' Tc=6.3 min CN=96 Runoff=0.17 cfs 0.010 af Subcatchment DA 5: Drainage Area 5 Runoff Area=0.050 ac 100.00% Impervious Runoff Depth>1.66" Flow Length=60' Slope=0.0050 '/' Tc=1.7 min CN=98 Runoff=0.14 cfs 0.007 af Subcatchment DA 6: Drainage Area 6 Runoff Area=0.150 ac 40.00% Impervious Runoff Depth>0.81" Flow Length=40' Slope=0.0045 '/' Tc=15.0 min CN=87 Runoff=0.13 cfs 0.010 af Pond EX RCVR: EX RCVR Peak Elev=900.03' Inflow=0.45 cfs 0.045 af 12.0" Round Culvert n=0.013 L=121.0' S=0.0031 '/' Outflow=0.45 cfs 0.045 af Pond RCVR 1: RCVR 1 Peak Elev=900.87' Inflow=0.17 cfs 0.024 af 8.0" Round Culvert n=0.013 L=59.0' S=0.0041 '/' Outflow=0.17 cfs 0.024 af Pond RCVR 2: RCVR 2 Peak Elev=900.73' Inflow=0.45 cfs 0.045 af 8.0" Round Culvert n=0.013 L=72.0' S=0.0100 '/' Outflow=0.45 cfs 0.045 af Pond RCVR 3: RCVR 3 Peak Elev=900.92' Inflow=0.33 cfs 0.019 af 8.0" Round Culvert n=0.013 L=39.0' S=0.0041 '/' Outflow=0.33 cfs 0.019 af