J_2024 05 09_West Orange Stormwater Management Plan

Post Development West Orange C_03 01 12 Type III 24-hr 100 yr Rainfall=8.72" Prepared by TRC Engineers, Inc. HydroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Printed 3/14/2012 Page 53 Summary for Pond CB 1: CB #1 [57] Hint: Peaked at 580.30’ (Flood elevation advised) [61] Hint: Exceeded Reach 1R outlet invert by 0.30' @ 12.16 hrs 14.940 ac, 23.84% Impervious, Inflow Depth = 6.70" for 100 yr event 72.45 cfs @ 12.16 hrs, Volume= 8.340 af 72.45 cfs @ 12.16 hrs, Volume= 8.340 af, Atten= 0%, Lag= 0.0 min 72.45 cfs @ 12.16 hrs, Volume= 8.340 af Inflow Area = Inflow = Outflow = Primary = Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 580.30' @ 12.16 hrs Device Routing Invert Outlet Devices #1 Primary 576.00' #2 Primary 580.00' 24.0" Round Culvert L= 90.0' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet lnvert= 576.00' / 574.00' S= 0.0222 7 Cc= 0.900 n= 0.011 100.0' long x 20.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Primary OutFlow Max=72.43 cfs @ 12.16 hrs HW=580.30' TW=0.00' (Dynamic Tailwater) t1=Culvert (Inlet Controls 27.49 cfs @ 8.75 fps) 2=Broad-Crested Rectangular Weir (Weir Controls 44.93 cfs @ 1.48 fps) Pond CB 1: CB#1 Hydrograph L- J I 7?.45.cfs I 72.45 cfs - d0- ■ Inflow Primary | Inflow Area=14.940 ac Peak Elev=580 30’ - m _ 50- % % a 45- 10- % E 35- L-1 m 2 3 4 Ymm 5 6 7 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours)