J_2024 05 09_West Orange Stormwater Management Plan

Post-Developed (O-1B) NOAA 24-hr D 100-Year_Future Rainfall=11.58", P2=4.07" West Orange HydroCAD_Post Printed 5/13/2024 Page 279 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 > 9.85" for 100-Year_Future event Inflow = 4.68 cfs @ 12.28 hrs, Volume= 1.331 af Outflow = 4.67 cfs @ 12.29 hrs, Volume= 1.331 af, Atten= 0%, Lag= 0.5 min Primary = 4.67 cfs @ 12.29 hrs, Volume= 1.331 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= 586.13' @ 12.29 hrs Surf.Area= 0.002 ac Storage= 0.001 af Plug-Flow detention time= 0.1 min calculated for 1.331 af (100% of inflow) Center-of-Mass det. time= 0.1 min ( 875.5 - 875.4 ) 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=4.67 cfs @ 12.29 hrs HW=586.13' TW=581.63' (Dynamic Tailwater) 1=SD-24 (Orifice Controls 4.67 cfs @ 3.80 fps) Pond 14P: SD-24 Hydrograph 5 Inflow Area=1.622 ac Peak Elev=586.13' Storage=0.001 af 4.67 cfs 4 Flow (cfs) Inflow Primary 4.68 cfs 3 2 1 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