2022 08 Drainage Report

2022-07-28 Proposed Hydrology NOAA 24-hr D 2-Year Rainfall=3.44" 2022-07-28 Proposed Hydrology NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Dynamic Engineering Printed 8/5/2022 Propared by Dynamic Engineering Printed 8/5/2022 HydroCAD® 10.20-2d sin 08640 © 2021 HydroCAD Software Solutions LLC :AD® 10.20-2d sin 08640 ©2021 Hi ‘Summary for Subcatchment 12S: Basin D - Perv. Hydrograph for Subcatchment 12S: Basin D - Perv. Runoff == 0.42 cfs @ 12.18 hrs, Volume= 0.037 af, Depth= 1.20" Time Precip. Excess Runoff uu Precip. Excess Runoff Routed to Pond 6P : Basin D 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__Deseription. 15,983 74 _>75% Grass cover, Good, HSG C \ i 15,983 7100.00% Pervious Area 036 0.00 0.00 | 59.00 i 0.45, 0.00 0.00 60.00 1.20 Te Length Slope Velocity Capacity Description 0.55 0.00 0.00 | 61.00 1.20 (min) (feet) __(ftft)__(fuisec) _(cfs) eee [oar ooo 200 tian 40.0 Direct Entry, Direct 165 020 015 | 64.00 120 255 0.63 0.07 | 65.00 120 Subcatchment 12S: Basin D - Perv. 276 0.76 0.04 | 66.00 1.20 2.89 0.84 0.03 67.00 1.20 Hydrograph 2.99 0.90 0.02 68.00 1.20 3.08, 0.96 0.02 69,00 1.20 cued 345.00 0.02 | 70.00 120 al 3.20 1.0 0.01 71.00 1.20 br NOAA 24-hr'D 3.26 1.08 001 | 72.00 1.20 ome] infall=3.44" 331 1.11 0.0% ses 2-Year Rainfall=3.44' 33614 00% ome =" 3.40 AAT 0.01 ‘ Runoff Area=15,983 sf a a cs Runoff Volume=0.037 af_ 3.44 1.20 0.00 3 7 344 1.20 0.00 : Fd Runoff Depth=1.20" 344 1200.00 oa -Teo= 344 1.20 0.00 © 02] Te=10.0 min 3441.20 0.00 ed CN=74 | 3.44 1.20 0.00 ied 3.44 1.20 0.00 ried 3441.20 0.00 ‘at 3.44 1.20 0.00 008 344 1.20 0.00 0.08: 3.44 1,20 0.00 bined 3.44 1.20 0.00 bar 3.44 1.20 0.00 V2 14 10 18 20 22 24 26 28 30 32 24 35 38 40 42 4A 46 48 0 52 54 56 58 60 62 G4 68 68 7072 3.44 1.20 0.00 ‘Time (hours) 3.44 1.20 0.00 3.44 1.20 0,00 3.44 1.20 0.00 3.44 41.20 0.00 3.44 1.20 0.00 344 1.20 0.00 3.44 1.20 0.00 3.44 1,20 0.00 3.44 1.20 0.00 3.44 1.20 0.00 344 1.20 0.00 3.44 4.20 0.00 344 1.20 0.00