J_2024 05 09_West Orange Stormwater Management Plan

Post-Developed (O-1B) NJ DEP 2-hr WQ Rainfall=1.25", P2=3.42" West Orange HydroCAD_Post Printed 5/13/2024 Page 39 Prepared by Burns & McDonnell HydroCAD® 10.20-4b s/n 08510 © 2023 HydroCAD Software Solutions LLC Summary for Pond 14P: SD-24 Inflow Area = 1.622 ac, 27.37% Impervious, Inflow Depth > 0.48" for WQ event Inflow = 0.41 cfs @ 1.74 hrs, Volume= 0.065 af Outflow = 0.41 cfs @ 1.74 hrs, Volume= 0.065 af, Atten= 0%, Lag= 0.1 min Primary = 0.41 cfs @ 1.74 hrs, Volume= 0.065 af Routed to Pond 13P : SD-25, SD-26 Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.0100 hrs Peak Elev= 585.17' @ 1.74 hrs Surf.Area= 0.000 ac Storage= 0.000 af Plug-Flow detention time= 0.1 min calculated for 0.065 af (100% of inflow) Center-of-Mass det. time= 0.1 min ( 158.0 - 157.9 ) Volume #1 Device #1 Invert 584.88' Avail.Storage 0.003 af Routing Primary Invert 584.88' Storage Description 15.0" Round SD-24 L= 111.3' S= 0.0150 '/' Outlet Devices 15.0" Vert. SD-24 C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=0.41 cfs @ 1.74 hrs HW=585.17' TW=580.74' (Dynamic Tailwater) 1=SD-24 (Orifice Controls 0.41 cfs @ 1.85 fps) Pond 14P: SD-24 Flow (cfs) Hydrograph Inflow Primary 0.41 cfs 0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=1.622 ac Peak Elev=585.17' Storage=0.000 af 0.41 cfs 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Time (hours) 15 16 17 18 19 20 21 22 23 24