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 20 Subcatchment P3C: P3C- Roof Area Hydrograph 0.21 Runoff 0.2 0.19 cfs 0.19 0.18 NOAA 24-hr D 0.17 2-Year-2020 Rainfall=3.47" 0.16 0.15 P2=3.47" 0.14 0.13 Runoff Area=4,500 sf 0.12 Runoff Volume=1,214 cf Flow (cfs) 0.11 0.1 Runoff Depth=3.24" 0.09 0.08 Flow Length=106' 0.07 Tc=1.1 min 0.06 0.05 CN=98 0.04 0.03 0.02 0.01 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)