J_2024 05 09_West Orange Stormwater Management Plan

Post Development West Orange B_03 01 12 NJ DEP 2-hrNJDEP Rainfall=1.25" Prepared by TRC Engineers, Inc. Printed 3/14/2012 HvdroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Page 69 Summary for Pond MH-3: MH-3 to MH-4 [57] Hint: Peaked at 603.68' (Flood elevation advised) 0.916 ac, 24.39% Impervious, Inflow Depth = 0.37" for NJDEP event 0.75 cfs @ 1.18 hrs, Volume= 0.028 af 0.75 cfs @ 1.18 hrs, Volume= 0.028 af, Atten=0%, Lag= 0.0 min 0.75 cfs @ 1.18 hrs, Volume= 0.028 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= 603.68' @ 1.17 hrs Device Routing #1 Primary Invert Outlet Devices 603.20’ 12.0" Round Culvert L= 50.0' Ke= 0.500 Inlet / Outlet lnvert= 603.20' / 602.20’ S= 0.0200 '/’ Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior Primary OutFlow Max=0.75 cfs @ 1.18 hrs HW=603.68' TW=602.79' (Dynamic Tailwater) 1=Culvert (Outlet Controls 0.75 cfs @ 2.96 fps) Pond MH-3: MH-3 to MH-4 Hydrograph /r~- —• f ; . T - -■ / ■ Inflow M Primary : ' o 0. 75 Cfs r Q Z5-Cf 0.75- Inflow Area=0.916 ac L' 0.7- Peak Elev=603 68' 'iiitiiiiiiii 0.65- 12 .0 " 3.60.55 Round Culvert _ 0.5 u _ j. O 0.45 n=0.020 i 0.4 0.35 rt■i ■V L=50.0' 0.3 S=0.0200 T 0.25 0.2 0.15 0.1 0.051 2 3 4 56 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours)