Page 51

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)