2022 08 Drainage Report

NOAA 24-hr D 2-Year Rainfall=3.44" 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 Pond 6P: Basin D 0.422 ac, 13.06% Impervious, Inflow Depth = 1.46" for 2-Year event = 0.57 cfs@ 12.18 hrs, Volume= 0.051 af Outflow = 0.00cfs@ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00cfs@ 0.00 hrs, Volume= 0.000 af Routed to Link 2L ; Mt. Pleasant Ave. Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 616.00’ @ 24.60 hrs Surf.Area= 2,520 sf Storage= 2,238 cf I storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert___Avail,Storage Storage Description ca 615.00" 8,561 of Custom Stage Data (Prismatic) Listed below (Recalc) Elev: ‘Surf.Area Inc.Store Cum.Store (sq-ft) (cubic-feet) {cubic-feet) 615.00 0 616.00 2,235 617.00 5,070 618.00 8,561 Device Routing #1 Primary 616.50’ 8.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads frimary OutFiow Max-0.00 of @ 0.00 hrs j=Orifice/Grate ( Controls 0.00 cfs) 2022-07-28 Proposed Hydrology NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Dynamic Engineering Printed 8/5/2022 ia) 10.20-2d_ sin 10_© 2021 HydroCAD Software Solutions LLC Elevation (feat) oss Storage=2,238 cf or. on Pond 6P: Basin D Hydrograph Inflow Area=0.422 ac Peak Elev=616.00' O24 6 8 woz te 46 1520722428 2 90 32 49 98 A042 44 4.4 898264 $8 986062 466057072 “Time (hours) Pond 6P: Basin D Stage-Discharge Discharge (cfs)