Stormwater Management Report 03302026

24-223 DRAINAGE DESIGN-EXISTING-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 6 Subcatchment E1C: E1C Pervious-w-offsite-Undisturbed Hydrograph Runoff 0.55 0.53 cfs 0.5 NOAA 24-hr D 2-Year-2020 Rainfall=3.47" 0.45 P2=3.47" 0.4 Runoff Area=46,342 sf 0.35 Runoff Volume=4,253 cf Flow (cfs) 0.3 Runoff Depth=1.10" 0.25 Flow Length=668' 0.2 Tc=13.6 min 0.15 CN=72 0.1 0.05 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)