2022 08 Drainage Report

NOAA 24-hr D 10-Year Rainfall=5.22" Printed 8/5/2022 2022-07-28 Proposed Hydrology Prepared by Dynamic Engineering HydroCAD® 10.20-2d s/n 08640 © 2021 HydroCAD Software Solutions LLC Summary for Subcatchment 9S: Mt. Pleasant Ave Undetained - Imp. Runoff = 0.17 cfs @ 12.17 hrs, Volume= Routed to Link 3L : Mt. Pleasant Ave - Undetained 0.016 af, Depth= 4.98" 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 10-Year Rainfall=5.22" Area (sf)__CN Description 1,085 98 Unconnected pavement, HSG C 621__98__Unconnected pavement, HSG D. 7,706 98 Weighted Average 1,706 100.00% Impervious Area 1,706 100.00% Unconnected Te Length Slope Velocity Capacity Description (min) (feet) (f/f) (fusec)___ (cfs) 10.0 Direct Entry, Direct Subcatchment 9S: Mt. Pleasant Ave Undetained - Imp. Hyarograph NOAA 24-hr D 10-Year Rainfall=5.2: Runoff Area=1,706 sf Runoff Volume=0.016 af Runoff Depth=4.98" Tc=10.0 min CN=98 Bb ea 24 we 20 9032 4383840424 48S 525 5 88,0 626 86007072 2022-07-28 Proposed Hydrology Prepared by Dynamic Engineering HydroCAD® 10.20-2d s/n 08640 © 2021 HydroCAD Software Solutions LLC NOAA 24-hr D 10-Year Rainfall=5.22" Printed 8/5/2022 Page Hydrograph for Subcatchment 9S: Mt. Pleasant Ave Undetained - Imp. Time Precip. Excess Runoff | Time Precip. Excess Runoff 1.00 0.06 0.00 200 0.13 0.02 3.00 0.20 0.07 400 027 0.12 5.00 0.36 0.19 600 0.45 0.27 700 055 0.36 3.00 0.68 0.48, 9.00 0.83 0.63, 10.00 1.03 0.82 14.00 1.36 1.14 1200 250 227 1300 3.86 © 3.63 14.00 4.19 3.95 15.00 4.39 4.16 1600 4.54 4.31 17.00 4.67 4.43 1800 4.77 4.54 19.00 486 4.63 2000 4.95 4.71 21.00 5.02 4.79 22.00 5,09 4.86 23.00 5.16 4.92 24.00 5.22 4,98 25.00 5.22 4.98 26.00 5.22 4.98 27.00 5.22 4.98 28.00 522 4.98 29.00 5.22 4.98 30,00 6.22 4.98 31.00 5.22 4.98 3200 5.22 4.98 33.00 5.22 4.98 34.00 5.22 4.98 95.00 5.22 4.98 36.00 5.22 4.98 37.00 5.22 4.98 38.00 5.22 4.98 39.00 5.22 4.98 40.00 5.22 4.98 41,00 5.22 4.98 42.00 5.22 4.98 43,00 5.22 4.98 4400 5.22 498 45.00 5.22 4.98 46.00 5.22 4.98 47.00 5.22 4,98 48.00 5.22 4,98 49.00 5.22 4.98 50.00 5.22 4.98 51.00 5.22 4.98