Runoff = 3.82 cfs @ 12.22 hrs, Volume= Routed to Pond 3P : SSIB #1 SURFACE BASIN 0.498 af, Depth> 8.29"
0.498 af, Depth> 8.29"
Runoff by SCS TR-20 method, UH=Delmarva, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NOAA 24-hr D 100 YEAR Rainfall=9.48"
Area (ac) CN Description
0.720 98 Paved parking, HSG A
0.720 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
11.7 100 0.0300 0.14 Sheet Flow, Grass: Dense n= 0.240 P2= 3.42" Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps
0.5 50 0.0110 1.57
0.9 160 3.00 Direct Entry, PIPE FLOW
13.1 310 Total
Subcatchment 2S: IMPERVIOUS