NOAA 24-hr D 100 YR-F Rainfall=11.41" Printed 10/24/2025
YR-F Rainfall=11.41" Printed 10/24/2025 Page 432
Analysis - Proposed Conditions Prepared by Civil Core Consulting HydroCAD® 10.20-7a s/n 13637 © 2025 HydroCAD Software Solutions LLC
Summary for Subcatchment 42S: Roof Lot 10
Runoff = 0.51 cfs @ 12.09 hrs, Volume= 1,722 cf, Depth=11.17" Routed to Pond 43P : Subsurface Basin Lot 10
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-F Rainfall=11.41"
Area (sf) CN Description
1,850 98 Roofs, HSG A
1,850 98 100.00% Impervious Area
Tc (min) Length (feet) Slope (ft/ft) Velocity (ft/sec)
0.4 45 2.00 Direct Entry, Pipe Flow
Subcatchment 42S: Roof Lot 10