J_2024 05 09_West Orange Stormwater Management Plan

Post Development West Orange C_03 01 12 NJ DEP 2-hr NJDEP Rainfall* 1.25" Prepared by TRC Engineers, Inc. HydroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Printed 3/14/2012 Page 76 Summary for Pond MH 12: MH 12 to Div Chamber [57] Hint: Peaked at 593.11' (Flood elevation advised) Inflow Area = Inflow = Outflow = Primary = 10.014 ac, 26.77% Impervious, Inflow Depth = 0.46" for NJDEP event 7.60 cfs @ 1.21 hrs, Volume= 0.382 af 7.60 cfs@ 1.21 hrs, Volume3 0.382 af, Atten=0%, Lag= 0.0 min 7.60 cfs @ 1.21 hrs, Volume3 0.382 af Routing by Dyn-Stor-Ind method, Time Span3 0.00-30.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 593.11' @ 1.21 hrs Device Routing #1 Invert Outlet Devices Primary 591.70' 30.0" Round Culvert L= 10.0' Ke= 0.500 Inlet /Outlet Invert3 591.70'/ 591.60' S3 0.0100 7' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior Primary OutFlow Max=7.60 cfs @ 1.21 hrs HW=593.1T TW=592.7T (Dynamic Tailwater) ^-1=Culvert (Outlet Controls 7.60 cfs @ 3.83 fps) Pond MH 12: MH 12 to Div Chamber Hydrograph i -i—r i ii i r i i I Inflow I Primary I V. fin cfs | : 7.60 cfs P ■ Inflow Area=10.014 ac Peak Elev=593.11' : i30.0" i i i i iii i i. —I _ _ r ’ "T I — J_ 1----- I ----- r - T _ 7 ~ - l -----------1 --- I ----- T " Round Culvert i» i n=0;020 t i i i i_ i i L-10.0i i . s ° - r - t - ~i r - r - 7 —i i _ j ' ■ r “ i * S=0.0100'/' •l i I I I I I. I I i i i t i t I I ^v’4.0 1 23 45 87 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 28 27 28 29 30 Time (hours) i n