J_2024 05 09_West Orange Stormwater Management Plan

Pre-Development West Orange with ponds 2 NJ DEP 2-hr NJDEP Rainfall=1.25" Prepared by TRC Engineers, Inc. Printed 3/4/2012 HvdroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Page 79 Summary for Reach 11R: Surface Swale Inflow Area = Inflow = Outflow = 1.049 ac, 54.04% Impervious, Inflow Depth = 1.49" for NJDEP event 4.45 cfs @ 1.14 hrs, Volume= 0.131 af 4.31 cfs @ 1.16 hrs, Volume= 0.131 af, Atten= 3%, Lag=1.2min Routing by Dyn-Stor-Ind method, Time Span3 0.00-30.00 hrs, dt= 0.01 hrs / 2 Max. Velocity= 2.93 fps, Min. Travel Time= 1.4 min Avg. Velocity = 0.82 fps, Avg. Travel Time= 5.1 min Peak Storage= 368 cf @ 1.16 hrs Average Depth at Peak Storage= 0.21* Bank-Full Depth= 0.50’, Capacity at Bank-Full= 23.76 cfs 5.00' x 0.50' deep channel, n= 0.030 Short grass Side Slope Z-value= 10.0 '/' Top Width= 15.00' Length= 250.0' Slope3 0.0400 V Inlet Invert3 590.00', Outlet Invert3 580.00' Reach 11R: Surface Swale Hydrograph I Inflow | I Outflow! 4.45 CfS .31 cfs I ---- mr1 *■ Inflow Area=1.049 ac Avg. Flow Depth=0.21’ Max Vel=?.93 fps n=0.030 i L=250.0 I r }. - S=0:0400T Capacity=23.76 cfs 1- \ot ? 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours)