Runoff = 1.54 cfs @ 12.19 hrs, Volume= 0.193 af, Depth= 3.81" Routed to Link 10L : Study Area Study Area WQ MTD A-110 (Total)
Runoff by SCS TR-20 method, UH=Delmarva, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NOAA 24-hr D 2-Year-Projected Rainfall=4.04"
Area (ac) CN Description
0.610 98 Paved parking, HSG A
0.610 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
0.6 55 0.0302 1.62 Sheet Flow, A-B
1.3 297 0.0035 3.68 4.52 Smooth surfaces n= 0.011 P2= 4.04"
Pipe Channel, B-C
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.011 Concrete pipe, straight & clean
1.9 352 Total, Increased to minimum Tc = 10.0 min
Subcatchment 10S: Study Area WQ MTD A-110 (Imp)
Runoff = 0.00 cfs @ 17.02 hrs, Volume= 0.000 af, Depth= 0.05" Routed to Link 10L : Study Area Study Area WQ MTD A-110 (Total)
Runoff by SCS TR-20 method, UH=Delmarva, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NOAA 24-hr D 2-Year-Projected Rainfall=4.04"
Area (ac) CN Description
0.020 39 >75% Grass cover, Good, HSG A
0.020 39 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
1.4 8 0.0125 0.10 Sheet Flow, A-B
0.2 46 0.0380 3.96 Grass: Short n= 0.150 P2= 4.04"
1.3 297 0.0035 3.68 4.52 Shallow Concentrated Flow, B-C
Paved Kv= 20.3 fps
Pipe Channel, C-D
15.0" Round Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.011 Concrete pipe, straight & clean
2.9 351 Total. Increased to minimum Tc = 10.0 min
Subcatchment 11S: Study Area WQ MTD A-110 (Perv)
Hydrograph