Stormwater Management Report 03302026

24-223 DRAINAGE DESIGN-PROPOSED-2026-03-30 NOAA 24-hr D 10-Year-2050 Rainfall=6.37", P2=4.09" Prepared by Jarmel Kizel Architects & Engnrs Printed 3/30/2026 HydroCAD® 10.20-6a s/n 12607 © 2024 HydroCAD Software Solutions LLC Page 104 Subcatchment P3B-IMP: P3B IMPERVIOUS Hydrograph 0.085 Runoff 0.08 0.08 cfs 0.075 NOAA 24-hr D 0.07 10-Year-2050 Rainfall=6.37" 0.065 0.06 P2=4.09" 0.055 Runoff Area=980 sf 0.05 Runoff Volume=501 cf Flow (cfs) 0.045 0.04 Runoff Depth=6.13" 0.035 Flow Length=188' 0.03 Tc=1.1 min 0.025 CN=98 0.02 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)