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25-4181 storm calcs - proposed Type II 24-hr 1-Year Rainfall=1.87" Prepared by Carmina Wood Design Printed 2/11/2026 HydroCAD® 10.20-8a s/n 05019 © 2025 HydroCAD Software Solutions LLC Page 12 Pond 3P: Underground Detention Hydrograph Inflow 2.00 cfs Primary 2 Inflow Area=53,039 sf Peak Elev=526.60' Storage=1,104 cf 8.0" Flow (cfs) Round Culvert 0.96 cfs 1 n=0.013 L=24.0' S=0.0050 '/' 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 Time (hours) Page 42 of 65