J_2024 05 09_West Orange Stormwater Management Plan

Post-Developed (O-1B) West Orange HydroCAD_Post NOAA 24-hr D 2-Year_Future Rainfall=4.07", P2=4.07" Prepared by Burns & McDonnell HydroCAD® 10.20-4b s/n 08510 © 2023 HydroCAD Software Solutions LLC Printed 5/13/2024 Page 87 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>2.70" Flow Length=164' Tc=17.1 min CN=WQ Runoff=1.21 cfs 0.128 af Subcatchment 7S: PO-DA E Runoff Area=15,246 sf 31.71% Impervious Runoff Depth>2.87" Flow Length=175' Tc=14.4 min CN=WQ Runoff=0.84 cfs 0.084 af Subcatchment 9S: PO-DA G Runoff Area=16,902 sf 28.87% Impervious Runoff Depth>2.82" Flow Length=175' Tc=21.5 min CN=WQ Runoff=0.77 cfs 0.091 af Subcatchment 11S: PO-DA I Runoff Area=10,507 sf 27.64% Impervious Runoff Depth>2.81" Flow Length=120' Tc=6.0 min CN=WQ Runoff=0.75 cfs 0.056 af Runoff Area=13,809 sf 38.48% Impervious Runoff Depth>2.91" Flow Length=96' Slope=0.0336 '/' Tc=4.9 min CN=WQ Runoff=1.05 cfs 0.077 af Subcatchment 12S: PO-DA J Pond 1P: BR-01 Peak Elev=599.34' Storage=1,902 cf Inflow=1.21 cfs 0.128 af Outflow=0.30 cfs 0.125 af Pond 2P: BR-02 Peak Elev=600.04' Storage=1,120 cf Inflow=0.84 cfs 0.084 af Outflow=0.23 cfs 0.082 af Pond 3P: BR-03 Peak Elev=595.56' Storage=1,373 cf Inflow=0.77 cfs 0.091 af Outflow=0.20 cfs 0.089 af Pond 5P: BR-05 Peak Elev=594.95' Storage=729 cf Inflow=0.75 cfs 0.056 af Outflow=0.17 cfs 0.055 af Pond 6P: BR-04 Peak Elev=595.75' Storage=1,229 cf Inflow=1.05 cfs 0.077 af Outflow=0.16 cfs 0.074 af Pond 8P: O-1B Inflow=1.04 cfs 0.427 af Primary=1.04 cfs 0.427 af Pond 13P: SD-25, SD-26 Peak Elev=580.90' Storage=0.000 af Inflow=1.04 cfs 0.427 af 18.0" Round Culvert n=0.011 L=29.4' S=0.0099 '/' Outflow=1.04 cfs 0.427 af Pond 14P: SD-24 Peak Elev=585.32' Storage=0.000 af Inflow=0.88 cfs 0.371 af Outflow=0.88 cfs 0.371 af Pond 17P: SD-23 Peak Elev=587.20' Storage=0.000 af Inflow=0.72 cfs 0.297 af Outflow=0.72 cfs 0.297 af Pond 18P: SD-22 Peak Elev=588.81' Storage=0.000 af Inflow=0.52 cfs 0.208 af Outflow=0.52 cfs 0.208 af Pond 19P: SD-21 Peak Elev=590.88' Storage=0.000 af Inflow=0.30 cfs 0.125 af Outflow=0.30 cfs 0.125 af