J_2024 05 09_West Orange Stormwater Management Plan

Post-Developed (O-1B) NOAA 24-hr D 2-Year_Future Rainfall=4.07", P2=4.07" West Orange HydroCAD_Post Printed 5/13/2024 Page 119 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 > 2.75" for 2-Year_Future event Inflow = 0.88 cfs @ 12.78 hrs, Volume= 0.371 af Outflow = 0.88 cfs @ 12.78 hrs, Volume= 0.371 af, Atten= 0%, Lag= 0.1 min Primary = 0.88 cfs @ 12.78 hrs, Volume= 0.371 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= 585.32' @ 12.78 hrs Surf.Area= 0.001 ac Storage= 0.000 af Plug-Flow detention time= 0.1 min calculated for 0.371 af (100% of inflow) Center-of-Mass det. time= 0.1 min ( 877.7 - 877.6 ) 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=0.88 cfs @ 12.78 hrs HW=585.32' TW=580.90' (Dynamic Tailwater) 1=SD-24 (Orifice Controls 0.88 cfs @ 2.26 fps) Pond 14P: SD-24 Hydrograph Inflow Primary 0.88 cfs 0.95 0.9 Inflow Area=1.622 ac Peak Elev=585.32' Storage=0.000 af 0.88 cfs 0.85 0.8 0.75 0.7 Flow (cfs) 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 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