2026-02 Existing and Proposed NOAA 24-hr D 2-Year-Projected Rainfall=4.04" Prepared by Dynamic Engineering Printed 2/10/2026 HydroCAD® 10.20-8a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 49
Summary for Link 18L: Study Area Road Undetained (Total)
Inflow Area =0.120 ac, 25.00% Impervious, Inflow Depth = 0.99" for 2-Year-Projected event
Inflow =0.08 cfs @ 12.19 hrs, Volume= 0.010 af
Primary =0.08 cfs @ 12.19 hrs, Volume= 0.010 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span = 0.00-72.00 hrs, dt = 0.05 hrs
Link 18L: Study Area Road Undetained (Total)
2026-02 Existing and Proposed NOAA 24-hr D 10-Year-Current Rainfall=5.38" Prepared by Dynamic Engineering Printed 2/10/2026 HydroCAD® 10.20-8a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 50
Time span=0.00-72.00 hrs, dt=0.05 hrs, 1441 points
Runoff by SCS TR-20 method, UH=Delmarva, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Subcatchment3S: Ex. Study Area WestRunoff Area=0.930 ac 0.00% Impervious Runoff Depth=0.28" Flow Length=98' Tc=10.0 min CN=39 Runoff=0.05 cfs 0.022 af
Subcatchment4S: Ex. Study Area WestRunoff Area=0.090 ac 100.00% Impervious Runoff Depth=5.14" Flow Length=248' Tc=10.0 min CN=98 Runoff=0.30 cfs 0.039 af
Subcatchment6S: Ex. Study Area RoadRunoff Area=0.030 ac 100.00% Impervious Runoff Depth=5.14" Flow Length=82' Slope=0.0150 /' Tc=10.0 min CN=98 Runoff=0.10 cfs 0.013 af
Subcatchment7S: Ex. Study Area RoadRunoff Area=0.120 ac 0.00% Impervious Runoff Depth=0.28" Flow Length=61' Slope=0.0100 /' Tc=10.0 min CN=39 Runoff=0.01 cfs 0.003 af
Subcatchment10S: Study Area WQ MTDRunoff Area=0.610 ac 100.00% Impervious Runoff Depth=5.14" Flow Length=352' Tc=10.0 min CN=98 Runoff=2.05 cfs 0.261 af
Subcatchment11S: Study Area WQ MTDRunoff Area=0.020 ac 0.00% Impervious Runoff Depth=0.28" Flow Length=351' Tc=10.0 min CN=39 Runoff=0.00 cfs 0.000 af
Subcatchment12S: Study Area RoadRunoff Area=0.030 ac 100.00% Impervious Runoff Depth=5.14" Flow Length=35' Slope=0.0322 /' Tc=10.0 min CN=98 Runoff=0.10 cfs 0.013 af
Subcatchment14S: Study Area WestRunoff Area=0.310 ac 0.00% Impervious Runoff Depth=0.28" Flow Length=48' Slope=0.0850 /' Tc=10.0 min CN=39 Runoff=0.02 cfs 0.007 af
Subcatchment15S: Study Area Roof (Imp)Runoff Area=0.110 ac 100.00% Impervious Runoff Depth=5.14" Flow Length=207' Slope=0.0100 /' Tc=10.0 min CN=98 Runoff=0.37 cfs 0.047 af
Subcatchment19S: Study Area RoadRunoff Area=0.090 ac 0.00% Impervious Runoff Depth=0.28" Flow Length=58' Slope=0.0300 /' Tc=10.0 min CN=39 Runoff=0.00 cfs 0.002 af
Pond 21P: Basin A Routing (StormBrixx) Discarded=0.70 cfsPeak Elev=118.37' Storage=2,530 cf Inflow=2.42 cfs 0.309 af 0.309 af Primary=0.00 cfs 0.000 af Outflow=0.70 cfs 0.309 af
Link 5L: Ex Study Area West (Total)Inflow=0.30 cfs 0.061 af Primary=0.30 cfs 0.061 af
Link 8L: Existing Study Area Road (Total)Inflow=0.10 cfs 0.016 af Primary=0.10 cfs 0.016 af
Link 10L: Study Area Study Area WQ MTD A-110 (Total)Inflow=2.05 cfs 0.262 af Primary=2.05 cfs 0.262 af
Link 14L: Study Area West (Total)Inflow=0.02 cfs 0.007 af Primary=0.02 cfs 0.007 af
Link 16L: Study Area Basin A (Total)Inflow=2.42 cfs 0.309 af
Link 16L: Study Area Basin A (Total) Inflow=2.42 cfs 0.309 af Primary=2.42 cfs 0.309 af