29906 15 Ridgeway West Orange 5 26 26 HydroCAD Report

29906 15 Ridgeway West Orange Sec NOAA 24-hr D 10-Year-2050 Rainfall=6.37", P2=4.09" Prepared by Ensurplan Inc Printed 5/26/2026 HydroCAD® 10.20-8a s/n 11646 © 2025 HydroCAD Software Solutions LLC Page 30 Summary for Subcatchment 17S: Bypass Area Direct To Inlet Runoff = 0.42 cfs @ 12.31 hrs, Volume= 0.049 af, Depth= 3.50" 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-2050 Rainfall=6.37", P2=4.09" 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) 22.2 231 0.0260 0.17 Sheet Flow, Grass: Dense n= 0.240 P2= 4.09" Subcatchment 17S: Bypass Area Direct To Inlet Hydrograph 0.46 Runoff 0.44 0.42 cfs 0.42 0.4 NOAA 24-hr D 0.38 10-Year-2050 Rainfall=6.37" 0.36 0.34 P2=4.09" 0.32 0.3 Runoff Area=7,274 sf 0.28 Runoff Volume=0.049 af Flow (cfs) 0.26 0.24 0.22

Runoff Volume=0.049 af Flow (cfs) 0.26 0.24 0.22 Runoff Depth=3.50" 0.2 Flow Length=231' 0.18 0.16 Slope=0.0260 '/' 0.14 0.12 Tc=22.2 min 0.1 0.08 CN=74 0.06 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)