Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCAD® 10.20-7a s/n 13637 © 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 2 YR-F Rainfall=3.91" Printed 8/29/2025 as LLC Page 36
Summary for Subcatchment 19S: DA-E5
Runoff = 0.35 cfs @ 12.20 hrs, Volume= Routed to Link 20L : POA-5 0.042 af, Depth= 1.40"
0.042 af, Depth= 1.40"
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 2 YR-F Rainfall=3.91"
Area (ac) CN Description
0.100 55 Woods, Good, HSG B
0.260 78 Row crops, straight row, Good, HSG B
0.360 72 Weighted Average
0.360 72 100.00% Pervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec) Capacity (cfs) Description
9.0 35 0.0200 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Using McCuen-Spiess flow length
1.7 212 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps
10.7 247 Total
10.7 247 Total
Subcatchment 19S: DA-E5