2022 08 Drainage Report

2022-07-28 Proposed Hydrology NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Dynamic Engineering Printed 8/5/2022 HydroCAD® 10.20-2¢_s/n 08640 © 1 HydroCAD Software Solutions LLC P: 4 Summary for Subcatchment 8S: Basin C - Perv. Runoff = 0.82 cfs @_12.18hrs, Volume= 0.071 af, Depth= 1.20" 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 31,149 74 __>75% Grass cover, Good, HSG C 31,149) 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) __(ft/t)_(ftsec)_(cfs) 10.0 Direct Entry, Direct Subcatchment 8S: Basin C - Perv. Hydrograph oof a) re NOAA 24-hr D ral 2-Year Rainfall=3.44" os] Runoff Area=31,149 sf _ ead Runoff Volume=0.071 af S os Runoff Depth=1.20" 3 : = OPE 4G B OTE TH Wo T8AO 20 WN 28 2830'S 3 3836 40-4 4446 4 2 82 4 9 26D 62 646568 7072 imo (hours) 2022-07-28 Proposed Hydrology NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Dynamic Engineering Printed 8/5/2022 10.20-2d_sin 08640 © 2021 HydroCAD Software Solutions LLC P: Hydrograph for Subcatchment 8S: Basin C - Perv. Time Precip. Excess Runoff | Time Precip, Excess Runoff 400 0.04 0.00 0.00 . x 2.00 0.08 0.00 0.00 . E . 3.00 0.13 0.00 0.00 5. i . 400 0.48 0.00 0.00 | 56.00 344 1.20 0.00 5.00 0.24 ~—0.00 0.00 | 57.00 344 1.20 0.00 600 0.29 0.00 0.00 | 5800 344 1.20 0.00 7.00 0.36 0.00 000 | 5900 344 1.20 0.00 8.00 045 0.00 0.00 | 60.00 344 1.20 0.00 9.00 0.55 0.00 0.00 | 61.00 344 1.20 0.00 10.00 068 0.00 0.00 | 6200 344 1.20 0.00 11.00 0.89 0.01 002 | 63.00 344 1.20 0,00 1200 1.65 0.20 0.30 | 64.00 344 1.20 0.00 13.00 255 0.63 045 | 65.00 344 1.20 0.00 1400 276 0.76 0.07 | 66.00 344 1.20 0.00 45.00 289 0.84 0.05 | 67.00 344 1.20 0,00 16.00 299 0.90 0.04 | 6800 344 1.20 0.00 17.00 3.08 (0.96 0.04 | 6900 344 1.20 0.00 1800 315 1.00 0.03 | 70.00 344 1.20 0.00 49.00 320 1.04 0.03 | 71.00 344 1.20 0.00 20.00 3.26 1.08 0.03 | 7200 344 1.20 0.00 21.00 3.310 4.11 0.02 2200 3.36 1.14 0.02 23,00 340 1.17 0.02 24.00 3.44 1.20 0.02 25.00 344 © 1.20 0.00 26.00 344 1.20 0.00 27.00 3.44 = 1.20 0.00 2800 344 1.20 0.00 29.00 344 © 1.20 0.00 30.00 344 1.20 0.00 31.00 344 1.20 0.00 3200 344 = 1.20 0.00 33.00 3.44 1.20 0.00 3400 3.44 1.20 0.00 35.00 3.44 1.20 0.00 36.00 3.44 1.20 0.00 37.00 344 1.20 0.00 38.00 344 1.20

© 1.20 0.00 30.00 344 1.20 0.00 31.00 344 1.20 0.00 3200 344 = 1.20 0.00 33.00 3.44 1.20 0.00 3400 3.44 1.20 0.00 35.00 3.44 1.20 0.00 36.00 3.44 1.20 0.00 37.00 344 1.20 0.00 38.00 344 1.20 0.00 39.00 344 1.20 0.00 40.00 344 1.20 0.00 4100 3.44 1.20 0.00 4200 344 1.20 0.00 43.00 344 1.20 0,00 4400 344 1.20 0.00 45.00 3.44 1.20 0.00 46.00 3.44 1,20 0.00 4700-344 1.20 0.00 48.00 344 1.20 0.00 49.00 344 1.20 0.00 50.00 344 1.20 0.00 51.00 344 1.20 0.00