J_2024 05 09_West Orange Stormwater Management Plan

Type III 24-hr 2 yr Rainfall=3.42" Pre-Development West Orange with ponds 2 Prepared by TRC Engineers, Inc. Printed 3/4/2012 Page 15 HydroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Summary for Reach 11R: Surface Swale Inflow Area = Inflow = Outflow = 1.049 ac, 54.04% Impervious, Inflow Depth = 7.06" for 2 yr event 12.19 cfs @ 12.13 hrs, Volume= 0.617 af 12.12 cfs @ 12.14 hrs, Volume= 0.617 af, Atten= 1%, Lag= 0.8 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Max. Velocity= 3.95 fps, Min. Travel Time= 1.1 min Avg. Velocity = 0.71 fps, Avg. Travel Time= 5.9 min PeakStorage= 767 cf @ 12.14 hrs Average Depth at Peak Storage= 0.36' 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 V Top Width= 15.00' Length= 250.0' Slope= 0.0400 T Inlet lnvert= 590.00', Outlet lnvert= 580.00' Reach 11R: Surface Swale Hydrograph . I . .J _ ._• -- 12 I- .iJ_J - 12 ia c f s 12 12 cfs ------ - -I----- 1- . L . 1__ I__ - - L . l - J . J - . l - . I - t . J =1.049 w Avg. Flow Depth=0.36' . j _ •. _ 10- Max Vel=3.95: fps n=0.030 L=250;0' S=0:0400 T Capacity=23.76 cfs ^8 7- r~ri_t — T —k 112 34 5 6 m 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours) rr-7 I Inflow I I Outflow I