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24-4113 WEST SENECA EXCHANGE EXISTING Type II 24-hr 10-Year Rainfall=3.14" Prepared by Carmina Wood Design Printed 7/13/2026 HydroCAD® 10.20-7a s/n 05019 © 2025 HydroCAD Software Solutions LLC Page 17 Subcatchment 2S: Existing - Central Hydrograph Runoff 85 79.12 cfs 80 75 Type II 24-hr 70 10-Year Rainfall=3.14" 65 60 Runoff Area=22.800 ac 55 Runoff Volume=5.111 af Flow (cfs) 50 45 Runoff Depth=2.69" 40 Flow Length=2,297' 35 30 Tc=12.7 min 25 CN=96 20 15 10 5 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 Time (hours) Page 714 of 1174