09 Stormwater Mgmt Report 122025

NOAA 24-hr D 10-Year-Current Rainfall=5.38", P2=3.47" NJA230139 - REV 2 Prepared by Bohler Engineering, PC HydroCAD® 10.20-7a s/n 03478 © 2025 HydroCAD Software Solutions LLC Printed 12/11/2025 Page 18 Summary for Subcatchment E1p: Existing Pervious Runoff = 0.00 cfs @ 12.60 hrs, Volume= Routed to Link E1 : EDA 1A 21 cf, Depth= 0.28" Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv., Time Span= 0.00-72.00 hrs, dt= 0.10 hrs NOAA 24-hr D 10-Year-Current Rainfall=5.38", P2=3.47" Area (ac) 0.020 0.020 CN 39 39 Description >75% Grass cover, Good, HSG A 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.7 85 0.0500 0.25 Sheet Flow, Grass: Short n= 0.150 P2= 3.47" 0.2 15 0.0400 1.29 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.47" 0.5 121 0.0400 4.06 Shallow Concentrated Flow, Paved Kv= 20.3 fps 2.1 285 0.0120 2.22 Shallow Concentrated Flow, Paved Kv= 20.3 fps 0.1 20 0.6600 4.06 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 8.6 526 Total Subcatchment E1p: Existing Pervious Flow (cfs) Hydrograph Runoff 0.00 cfs 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 0 NOAA 24-hr D 10-Year-Current Rainfall=5.38" P2=3.47" Runoff Area=0.020 ac Runoff Volume=21 cf Runoff Depth=0.28" Flow Length=526' Tc=8.6 min CN=39/0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)