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25-4181 storm calcs - proposed Type II 24-hr 10-Year Rainfall=3.14" Prepared by Carmina Wood Design Printed 2/11/2026 HydroCAD® 10.20-8a s/n 05019 © 2025 HydroCAD Software Solutions LLC Page 18 Pond 3P: Underground Detention Hydrograph Inflow 4.19 cfs Primary Inflow Area=53,039 sf 4 Peak Elev=527.35' Storage=2,548 cf 3 8.0" Flow (cfs) Round Culvert 2 1.69 cfs n=0.013 L=24.0' 1 S=0.0050 '/' 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 Time (hours) Page 48 of 65