J_2024 05 09_West Orange Stormwater Management Plan

Post Development West Orange B_03 01 12 NJ DEP 2-hr NJDEP Rainfall=1.25" Prepared by TRC Engineers, Inc. HvdroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Printed 3/14/2012 Page 70 Summary for Pond MH-4: MH4 to MH5 [57] Hint: Peaked at 602.85’ (Flood elevation advised) i Inflow Area = Inflow = Outflow = Primary = 1.507 ac, 39.97% Impervious, Inflow Depth = 0.54" for NJDEP event 2.01 cfs@ 1.12 hrs, Volume3 0.068af 2.01 cfs@ 1.12 hrs, Volume3 0.068af, Atten= 0%, Lag3 0.0min 3 2.01 cfs @ 1.12 hrs, Volume 0.068af Routing by Dyn-Stor-Ind method, Time Span3 0.00-30.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 602.85' @ 1.12 hrs Invert Outlet Devices 602.20' 18.0" Round Culvert L= 85.0' Ke= 0.500 Inlet / Outlet Invert3 602.20' / 599.90' S= 0.0271 V Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior Device Routing #1 Primary Primary OutFlow Max=2.00 cfs @ 1.12 hrs HW=602.85' TW=600.74' (Dynamic Tailwater) 1=Culvert (Inlet Controls 2.00 cfs @ 2.74 fps) Pond MH-4: MH4 to MH5 Hydrograph A I ? m r.f 2.01 Cfs 7 ■ P Inflow Area=1.507 ac Peak Elev=602.85' j i i ; 18.0" Round Culvert iiiiiiii ; ; :n=0.020 ; : L=85.0' 3=0.0271 r 't ms, 0 1 23 45678 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) Inflow M Primary | -i—r - t ■ |