2022 08 Drainage Report

2022-07-28 Proposed Hydrology Prepared by Dynamic Engineering HydroCAD® 10.20-2d sin 08640 © 2021 HydroCAD Software Solutions LLC NOAA 24-hr D 2-Year Rainfall=3.44" Printed 8/5/2022 4 Summary for Subcatchment 7S: Basin C - Imp. Runoff = 0.30 cfs @_12.17 hrs, Volume= 0.028 af, Depth= 3.21" Routed to Pond 5P : Basin C Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0,05 hrs NOAA 24-hr D 2-Year Rainfall=3.44" Area (sf)__CN__Description 4,635___ 98 Unconnected pavement, HSG C 4,635 100.00% Impervious Area 4,635 100.00% Unconnected Te Length Slope Velocity Capacity Description (min) (feet) __(ft/ft)__ (ft/sec) (cfs) 10.0 Direct Entry, Direct Subcatchment 7S: Basin C - Imp. Hydrograph NOAA 24-hr D> 2-Year Rainfall=3.44"_ -Runoff Area=4,635 sf Runoff Volume=0.028 af Runoff Depth=3.21" - Tc=10-0 min CN=98 O24 eo WET 720 22 24 26-20 30 32 34 36 38 40 42 44 46 48 90 52 St $5 58 60 62 64 OB 68 7072 “Time 2022-07-28 Proposed Hydrology Prepared by Dynamic Engineering HydroCAD® 10.20-2d s/n 08640 © 2021 HydroCAD Software Solutions LLC Hydrograph for Subcatchment 7S: Basin C - Imp. NOAA 24-hr D 2-Year Rainfall=3.44" Printed 8/5/2022