J_2024 05 09_West Orange Stormwater Management Plan

Post-Developed (O-1B) West Orange HydroCAD_Post NOAA 24-hr D 100-Year_Future Rainfall=11.58", P2=4.07" Prepared by Burns & McDonnell HydroCAD® 10.20-4b s/n 08510 © 2023 HydroCAD Software Solutions LLC Printed 5/13/2024 Page 247 Time span=0.00-24.00 hrs, dt=0.0100 hrs, 2401 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 5S: PO-DA C Runoff Area=24,698 sf 17.46% Impervious Runoff Depth>9.89" Flow Length=164' Tc=17.1 min CN=WQ Runoff=4.23 cfs 0.467 af Subcatchment 7S: PO-DA E Runoff Area=15,246 sf 31.71% Impervious Runoff Depth>10.10" Flow Length=175' Tc=14.4 min CN=WQ Runoff=2.83 cfs 0.295 af Subcatchment 9S: PO-DA G Runoff Area=16,902 sf 28.87% Impervious Runoff Depth>10.02" Flow Length=175' Tc=21.5 min CN=WQ Runoff=2.63 cfs 0.324 af Subcatchment 11S: PO-DA I Runoff Area=10,507 sf 27.64% Impervious Runoff Depth>10.03" Flow Length=120' Tc=6.0 min CN=WQ Runoff=2.55 cfs 0.202 af Runoff Area=13,809 sf 38.48% Impervious Runoff Depth>10.15" Flow Length=96' Slope=0.0336 '/' Tc=4.9 min CN=WQ Runoff=3.49 cfs 0.268 af Subcatchment 12S: PO-DA J Pond 1P: BR-01 Peak Elev=602.16' Storage=6,639 cf Inflow=4.23 cfs 0.467 af Outflow=1.65 cfs 0.460 af Pond 2P: BR-02 Peak Elev=601.47' Storage=2,187 cf Inflow=2.83 cfs 0.295 af Outflow=2.78 cfs 0.292 af Pond 3P: BR-03 Peak Elev=599.05' Storage=5,822 cf Inflow=2.63 cfs 0.324 af Outflow=0.50 cfs 0.317 af Pond 5P: BR-05 Peak Elev=598.22' Storage=3,203 cf Inflow=2.55 cfs 0.202 af Outflow=0.35 cfs 0.200 af Pond 6P: BR-04 Peak Elev=598.73' Storage=4,782 cf Inflow=3.49 cfs 0.268 af Outflow=0.44 cfs 0.261 af Pond 8P: O-1B Inflow=5.00 cfs 1.530 af Primary=5.00 cfs 1.530 af Pond 13P: SD-25, SD-26 Peak Elev=581.63' Storage=0.001 af Inflow=5.00 cfs 1.530 af 18.0" Round Culvert n=0.011 L=29.4' S=0.0099 '/' Outflow=5.00 cfs 1.530 af Pond 14P: SD-24 Peak Elev=586.13' Storage=0.001 af Inflow=4.68 cfs 1.331 af Outflow=4.67 cfs 1.331 af Pond 17P: SD-23 Peak Elev=587.94' Storage=0.001 af Inflow=4.27 cfs 1.069 af Outflow=4.26 cfs 1.069 af Pond 18P: SD-22 Peak Elev=590.04' Storage=0.001 af Inflow=3.95 cfs 0.752 af Outflow=3.95 cfs 0.752 af Pond 19P: SD-21 Peak Elev=591.31' Storage=0.000 af Inflow=1.65 cfs 0.460 af Outflow=1.65 cfs 0.460 af