J_2024 05 09_West Orange Stormwater Management Plan

Type III 24-hr 2 yr Rainfall=3.42" Post Development West Orange C_03 01 12 Prepared by TRC Engineers, Inc. Printed 3/14/2012 Page 10 HvdroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Summary for Reach 1R: Swale Inflow Area = Inflow = Outflow = 2.157 ac, 1.99% Impervious, Inflow Depth = 1.61" 3.78 cfs @ 12.11 hrs, Volume3 0.289 af 3.61 cfs @ 12.14 hrs, Volume3 0.289 af, for 2 yr event Lag3 1.7 min Atten= 4%, Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Max. Velocity3 2.84 fps, Min. Travel Time= 2.5 min Avg. Velocity = 0.68 fps, Avg. Travel Time= 10.3 min Peak Storage3 534 cf @ 12.14 hrs Average Depth at Peak Storage3 0.19' Bank-Full Depth3 0.50', Capacity at Bank-Full3 24.59 cfs 5.00' x 0.50' deep channel, n= 0.030 Earth, grassed & winding Side Slope Z-value= 10.0 '/' Top Width3 15.00’ Length3 420.0' Slope3 0.0429 V Inlet Invert3 598.00', Outlet Invert3 580.00' Reach 1R: Swale Hydrograph I Inflow I I Outflow I 3.78 cfs 3.6 — T Inflo )w cfs T Area=3-I57 ac Flow Depth=0.19' Max Vel=2.84 fps 3- n=0.030 : 5 ° u. I 2- < [II II V S=0.0429 7' Capacity=24.59 cfs i :• i i . i. .. i 1- 2 3 4 5 6 7 8 9 1 0 1 IWM 1 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) L=420.0 I