J_2024 05 09_West Orange Stormwater Management Plan

Type III 24-hr 2 yr Rainfall=3.42" Post Development West Orange B_03 01 12 Prepared by TRC Engineers, Inc, HydroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Printed 3/14/2012 Page 13 Summary for Pond MH-4: MH4 to MH5 [57] Hint: Peaked at 603.05' (Flood elevation advised) Inflow Area = Inflow = Outflow = Primary = 1.507 ac, 39.97% Impervious, Inflow Depth = 2.27" for 2 yr event 3.27 cfs@ 12.11 hrs, Volume= 0.286 af 3.27 cfs@ 12.11 hrs, Volume= 0.286 af, Atten=0%, Lag= 0.0 min 3.27 cfs@ 12.11 hrs, Volumes 0.286 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 603.05' @ 12.11 hrs Device Routing #1 Primary Invert Outlet Devices 602.20' 18.0" Round Culvert L= 85.0' Ke= 0.500 Inlet / Outlet Inverts 602.20' / 599.90' S= 0.0271 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior Primary OutFlow Max=3.26 cfs @ 12.11 hrs HW=603.05' TW=601.01' (Dynamic Tailwater) 1=Culvert (Inlet Controls 3.26 cfs @ 3.14 fps) Pond MH-4: MH4 to MH5 Hydrograph ■L3.2Z.cfsJ 3.27 cfs m / V V, y: V. ■ Inflow B Primary Inflow Area=1.507 ac Peak Elev=603.05* 18.0" Round Culvert n=0.020 L=85 O' S=0.0271 V i i i i i i i i i i t i i i 0- 1 2 Wm 3 45 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Tima (hours)