J_2024 05 09_West Orange Stormwater Management Plan

Post Development West Orange C_03 01 12 Prepared by TRC Engineers, Inc. NJ DEP 2-hrNJDEP Rainfall=1.25" Printed 3/14/2012 HydroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Page 73 Summary for Reach 1R: Swale Inflow Area = Inflow = Outflow = 2.157 ac, 1.99% Impervious, Inflow Depth = 0.19" for NJDEP event 1.04 cfs@ 1.16 hrs, Volume= 0.034 af 0.90 cfs@ 1.22 hrs, Volume= 0.034 af, Atten=13%, Lag= 3.2 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Max. Velocity= 1.81 fps, Min. Travel Time= 3.9 min Avg. Velocity = 0.56 fps, Avg. Travel Time= 12.5 min Peak Storages 209 cf @ 1.22 hrs Average Depth at Peak Storages 0.09' Bank-Full Depth= 0.50', Capacity at Bank-Full= 24.59 cfs 5.00' x 0.50' deep channel, n= 0.030 Earth, grassed & winding Side Slope Z-value= 10.0 '/' Top Width= 15.00' Lengths 420.0' Slope= 0.0429 7 Inlet Inverts 598.00', Outlet Inverts 580.00' Reach 1R: Swale Hydrograph ■ Inflow | □ Outflowl 1.04 cfs Inflow Area-2.157 ac Avg. Flow Depth=0.09' r 0.90 cfs Max Vel=1.81 fps n=0.030 * L=420.0' S=0.0429 V Capacity=24.59 cfs ii 3 4 5 6 78 i i 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Tims (hours)