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25-4181 storm calcs - proposed Type II 24-hr 25-Year Rainfall=3.84" Prepared by Carmina Wood Design Printed 2/11/2026 HydroCAD® 10.20-8a s/n 05019 © 2025 HydroCAD Software Solutions LLC Page 24 Pond 3P: Underground Detention Hydrograph Inflow 6 5.41 cfs Primary Inflow Area=53,039 sf 5 Peak Elev=527.83' Storage=3,418 cf 4 8.0" Flow (cfs) 3 Round Culvert 2.05 cfs n=0.013 2 L=24.0' S=0.0050 '/' 1 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 Time (hours) Page 54 of 65