Stormwater Management Report 03302026

24-223 DRAINAGE DESIGN-PROPOSED-2026-03-30 NOAA 24-hr D 2-Year-2020 Rainfall=3.47", P2=3.47" Prepared by Jarmel Kizel Architects & Engnrs Printed 3/30/2026 HydroCAD® 10.20-6a s/n 12607 © 2024 HydroCAD Software Solutions LLC Page 8 Subcatchment P1-P: P1 PERVIOUS Hydrograph Runoff 0.085 0.08 cfs 0.08 NOAA 24-hr D 0.075 0.07 2-Year-2020 Rainfall=3.47" 0.065 P2=3.47" 0.06 0.055 Runoff Area=5,380 sf Runoff Volume=547 cf Flow (cfs) 0.05 0.045 0.04 Runoff Depth=1.22" 0.035 Flow Length=444' 0.03 Tc=7.6 min 0.025 0.02 CN=74 0.015 0.01 0.005 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours)