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230550 HydroCAD
Concept HydroCAD-230550 Type II 24-hr 10-yr Rainfall=5.60"
Prepared by Lane Engineering, LLC Printed 5/26/2025
HydroCAD® 10.00-17 s/n 03788 © 2016 HydroCAD Software Solutions LLC Page 14

Summary for Subcatchment 6S: P-3 (Blue)

Runoff = 1.13 cfs @ 11.99 hrs, Volume= 0.067 af, Depth> 3.42"

Runoff by SCS TR-20 method, UH=Delmarva, Weighted-CN, Time Span= 0.10-24.01 hrs, dt= 0.03 hrs
Type II 24-hr 10-yr Rainfall=5.60"

Area (sf) CN Description
10,237 80 >75% Grass cover, Good, HSG D
64 98 Paved parking, HSG D
10,301 80 Weighted Average
10,237 99.38% Pervious Area
64 0.62% Impervious Area

Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
6.0 Direct Entry,

Subcatchment 6S: P-3 (Blue)

Hydrograph
Runoff
1.13 cfs
Type II 24-hr

1 10-yr Rainfall=5.60"
Runoff Area=10,301 sf
Runoff Volume=0.067 af
Flow (cfs) Runoff Depth>3.42"

Tc=6.0 min
CN=80

0
2 4 6 8 10 12 14 16 18 20 22 24
Time (hours)

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