J_2024 05 09_West Orange Stormwater Management Plan

Type III 24-hr 2 yr Rainfall=3.42" Printed 3/4/2012 Page 16 Pre-Development West Orange with ponds 2 Prepared by TRC Engineers, Inc. HvdroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Summary for Reach 13R: Swale Inflow Area = Inflow = Outflow = 2.404 ac, 2.87% Impervious, Inflow Depth = 1.62" for 2 yr event 4.25 cfs @ 12.11 hrs, Volume= 0.324 af 4.07 cfs @ 12.14 hrs, Volumes 0.324 af, Atten= 4%, Lag=1.6min * • • * • . .• * ■ " i ' t* / | Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Max. Velocity= 2.94 fps, Min. Travel Time= 2.4 min Avg. Velocity = 0.70 fps, Avg. Travel Time= 10.0 min Peak Storage= 580 cf @ 12.14 hrs Average Depth at Peak Storage= 0.20' Bank-Full Depth= 0.50', 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 7 Top Width= 15.00’ Length= 420.0’ Slopes 0.0429 7 Inlet lnvert= 598.00’, Outlet lnvert= 580.00’ Reach 13R: Swale Hydrograph — — I Inflow I i Outflow! 4.25 cfs Inflow Area=2.404 ac Flow:Depth=0.20* Avg. 4.07 cfs V. Max Vel=2.94 fps : n=0i030 •i*iiiiiii : L=420.0' l _ _ I ____________ L _ 1 _____I “ _ _ i i i J . x _ ____ __ • __ i . . . i __ ______ 3- _ j j j S=0.0429 V Capacity=24.59 cfs 2- 1 0 1 234 5678 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours)