29906 15 Ridgeway West Orange 5 26 26 HydroCAD Report

29906 15 Ridgeway West Orange Sec NOAA 24-hr D 10-Year-2020 Rainfall=5.38", P2=3.47" Prepared by Ensurplan Inc Printed 5/26/2026 HydroCAD® 10.20-8a s/n 11646 © 2025 HydroCAD Software Solutions LLC Page 12 Summary for Subcatchment 17S: Bypass Area Direct To Inlet Runoff = 0.31 cfs @ 12.35 hrs, Volume= 0.037 af, Depth= 2.67" Routed to Reach 12R : Study Point At Inlet Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs NOAA 24-hr D 10-Year-2020 Rainfall=5.38", P2=3.47" Area (sf) CN Description 7,274 74 >75% Grass cover, Good, HSG C 7,274 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 24.1 231 0.0260 0.16 Sheet Flow, Grass: Dense n= 0.240 P2= 3.47" Subcatchment 17S: Bypass Area Direct To Inlet Hydrograph 0.34 Runoff 0.31 cfs 0.32 0.3 NOAA 24-hr D 0.28 10-Year-2020 Rainfall=5.38" 0.26 P2=3.47" 0.24 0.22 Runoff Area=7,274 sf 0.2 Runoff Volume=0.037 af Flow (cfs) 0.18 Runoff Depth=2.67" 0.16 0.14

.037 af Flow (cfs) 0.18 Runoff Depth=2.67" 0.16 0.14 Flow Length=231' 0.12 Slope=0.0260 '/' 0.1 Tc=24.1 min 0.08 0.06 CN=74 0.04 0.02 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 31 32 33 34 35 36 Time (hours)