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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 35 Summary for Pond RCVR 1: RCVR 1 Inflow Area = 0.340 ac, 70.59% Impervious, Inflow Depth > 0.86" for 1-yr event Inflow = 0.17 cfs @ 11.98 hrs, Volume= 0.024 af Outflow = 0.17 cfs @ 11.98 hrs, Volume= 0.024 af, Atten= 0%, Lag= 0.0 min Primary = 0.17 cfs @ 11.98 hrs, Volume= 0.024 af Routed to Pond RCVR 2 : RCVR 2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Peak Elev= 900.87' @ 11.99 hrs Device Routing Invert Outlet Devices #1 Primary 900.56' 8.0" Round RCVR 1 to RCVR 2 L= 59.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 900.56' / 900.32' S= 0.0041 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 0.35 sf Primary OutFlow Max=0.13 cfs @ 11.98 hrs HW=900.85' TW=900.68' (Dynamic Tailwater) 1=RCVR 1 to RCVR 2 (Outlet Controls 0.13 cfs @ 1.32 fps) Pond RCVR 1: RCVR 1 RCVR 1 to RCVR 2