J_2024 05 09_West Orange Stormwater Management Plan

Post-Developed (O-1B) West Orange HydroCAD_Post NOAA 24-hr D 10-Year_Current Rainfall=5.37", P2=3.45" Prepared by Burns & McDonnell HydroCAD® 10.20-4b s/n 08510 © 2023 HydroCAD Software Solutions LLC Printed 5/13/2024 Page 127 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>3.90" Flow Length=164' Tc=18.5 min CN=WQ Runoff=1.67 cfs 0.184 af Subcatchment 7S: PO-DA E Runoff Area=15,246 sf 31.71% Impervious Runoff Depth>4.08" Flow Length=175' Tc=15.6 min CN=WQ Runoff=1.14 cfs 0.119 af Subcatchment 9S: PO-DA G Runoff Area=16,902 sf 28.87% Impervious Runoff Depth>4.02" Flow Length=175' Tc=23.3 min CN=WQ Runoff=1.05 cfs 0.130 af Subcatchment 11S: PO-DA I Runoff Area=10,507 sf 27.64% Impervious Runoff Depth>4.02" Flow Length=120' Tc=6.5 min CN=WQ Runoff=1.04 cfs 0.081 af Runoff Area=13,809 sf 38.48% Impervious Runoff Depth>4.12" Flow Length=96' Slope=0.0336 '/' Tc=5.4 min CN=WQ Runoff=1.44 cfs 0.109 af Subcatchment 12S: PO-DA J Pond 1P: BR-01 Peak Elev=600.08' Storage=2,990 cf Inflow=1.67 cfs 0.184 af Outflow=0.33 cfs 0.182 af Pond 2P: BR-02 Peak Elev=601.13' Storage=1,649 cf Inflow=1.14 cfs 0.119 af Outflow=0.33 cfs 0.117 af Pond 3P: BR-03 Peak Elev=596.66' Storage=2,048 cf Inflow=1.05 cfs 0.130 af Outflow=0.26 cfs 0.127 af Pond 5P: BR-05 Peak Elev=595.55' Storage=1,100 cf Inflow=1.04 cfs 0.081 af Outflow=0.21 cfs 0.079 af Pond 6P: BR-04 Peak Elev=596.26' Storage=1,813 cf Inflow=1.44 cfs 0.109 af Outflow=0.20 cfs 0.106 af Pond 8P: O-1B Inflow=1.31 cfs 0.612 af Primary=1.31 cfs 0.612 af Pond 13P: SD-25, SD-26 Peak Elev=580.97' Storage=0.000 af Inflow=1.31 cfs 0.612 af 18.0" Round Culvert n=0.011 L=29.4' S=0.0099 '/' Outflow=1.31 cfs 0.612 af Pond 14P: SD-24 Peak Elev=585.38' Storage=0.000 af Inflow=1.10 cfs 0.532 af Outflow=1.10 cfs 0.532 af Pond 17P: SD-23 Peak Elev=587.25' Storage=0.000 af Inflow=0.90 cfs 0.426 af Outflow=0.90 cfs 0.426 af Pond 18P: SD-22 Peak Elev=588.86' Storage=0.000 af Inflow=0.65 cfs 0.299 af Outflow=0.65 cfs 0.299 af Pond 19P: SD-21 Peak Elev=590.89' Storage=0.000 af Inflow=0.33 cfs 0.182 af Outflow=0.33 cfs 0.182 af