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. HvdroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Printed 3/4/2012 Page 80 Summary for Reach 13R: Swale Inflow Area = Inflow = Outflow = 2.404 ac, 2.87% Impervious, Inflow Depth = 0.20" for NJDEP event 1.20 cfs @ 1.16 hrs, Volume= 0.040 af 1.06 cfs @ 1.21 hrs, Volume= 0.040 af, Atten=12%, Lag= 3.0 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Max. Velocity= 1.91 fps, Min. Travel Time= 3.7 min Avg. Velocity = 0.58 fps, Avg. Travel Time= 12.0 min Peak Storage= 232 cf @ 1.21 hrs Average Depth at Peak Storages o.09’ Bank-Full Depths o.50', Capacity at Bank-Full= 24.59 cfs 5.00' x 0.50' deep channel, n= 0.030 Short grass Side Slope Z-value= 10.0 '/' Top Widths 15.00' Lengths 420.O' Slope= 0.0429 7 Inlet Inverts 598.00', Outlet Inverts 580.00' Reach 13R: Swale Hydrograph A ■ Innow I 1.20 cfs □ Outflow! Inflow Area=2.404 ac Avg. Flow: bepth=b.09* Max Vel=1.91;fp^ i i i i i i i i n=0;030 .06 cfs JO'S M : i M i L>420.0! i i i j j i S-0;0429: V' ; Capacity=24.59 cfs z 0 1 2 34 5 678 9 10 11 12 13 14 15 18 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours)