102 Sams -REV 12-02-25 NOAA 24-hr D 100-Year Rainfall=9.48" Prepared by Haler Consulting Printed 04/12/2025 HydroCAD® 10.20-2h s/n 10351 © 2024 HydroCAD Software Solutions LLC Page 50
Summary for Subcatchment 149S: DA P0 Pervious
Runoff = 1.65 cfs @ 13.28 hrs, Volume= 31,994 cf, Depth= 1.14" Routed to Link 147L : POA
Runoff by SCS TR-20 method, UH=Delmarva, Split Pervious/Imperv. UI as Pervious, Time Span= 0.00-72.00 hrs, dt= NOAA 24-hr D 100-Year Rainfall=9.48"
Area (sf) CN Description
236,879 30 Woods, Good, HSG A
99,371 39 >75% Grass cover, Good, HSG A
336,250 33 Weighted Average
336,250 33 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs)
36.2 100 0.0050 0.05 Sheet Flow, Woods: Light underbrush n=0.400 P2=3.42" Shallow Concentrated Flow, Woodland Kv=5.0 fps
13.6 579 0.0200 0.71
49.8 679 Total
Subcatchment 149S: DA P0 Pervious