Summary for Subcatchment 1S: POROUS

Runoff = 0.11 cfs @ 12.55 hrs, Volume=

Runoff = 0.11 cfs @ 12.55 hrs, Volume= Routed to Pond 3P : SSIB #1 SURFACE BASIN 0.025 af, Depth> 0.53"

0.025 af, Depth> 0.53"

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 25 year Rainfall=6.68"

Area (ac) CN Description

0.570 39 >75% Grass cover, Good, HSG A

0.570 100.00% Pervious 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"

0.3 50 0.0350 2.81 Shallow Concentrated Flow, Grassed Waterway Kv=15.0 fps

0.9 160 3.00 Direct Entry, PIPE FLOW

12.9 310 Total

Subcatchment 1S: POROUS