Analysis-Existing Conditions Prepared by Civil Core Consulting HydroCAD® 10.20-7a s/n 13637 © 2025 HydroCAD Software Solutions LLC
NOAA 24-hr D 100 YR-C Rainfall=8.95" Printed 8/29/2025 tions LLC Page 92
Summary for Subcatchment 1S: DA-E1
Runoff = 23.39 cfs @ 12.38 hrs, Volume= 4.046 af, Depth= 5.91" Routed to Link 6L : POA-1
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 100 YR-C Rainfall=8.95"
Area (ac)CNDescription
1.05055Woods, Good, HSG B
7.17078Row crops, straight row, Good, HSG B
8.22075Weighted Average
8.22075100.00% Pervious Area
Tc (min)Length (feet)Slope (ft/ft)Velocity (ft/sec)Capacity (cfs)Description
9.0350.02000.07Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.42" Using McCuen-Spiess flow length
12.06460.01000.90Shallow Concentrated Flow, Cultivated Straight Rows Kv= 9.0 fps
2.6500.00400.32Shallow Concentrated Flow, Woodland Kv= 5.0 fps
22.6724Total
Subcatchment 1S: DA-E1
Runoff