NOAA 24-hr D 100-Year Rainfall=9.48" Printed 04/12/2025
102 Sams -REV 12-02-25 NOAA 2 Prepared by Haler Consulting HydroCAD® 10.20-2h s/n 10351 © 2024 HydroCAD Software Solutions LLC
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Summary for Subcatchment 150S: DA P4 (Pervious)
Runoff = 1.50 cfs @ 12.30 hrs, Volume= 11,767 cf, Depth= 1.83" Routed to Pond 144P : WQ Infiltration Basin #1
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
76,971 39 >75% Grass cover, Good, HSG A
76,971 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
12.5 100 0.0100 0.13 Sheet Flow, Grass: Short n= 0.150 P2= 3.42"
2.3 96 0.0100 0.70 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps
14.8 196 Total
Subcatchment 150S: DA P4 (Pervious)