J_2024 05 09_West Orange Stormwater Management Plan

Pre-Development West Orange with ponds 2 Prepared by TRC Engineers, Inc. Type III 24-hr 100 yr Rainfall=8.72" Printed 3/4/2012 HvdroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Summary for Reach 11R: Surface Swale [91] Warning: Storage range exceeded by 0.25' [55] Hint: Peak inflow is 204% of Manning's capacity Inflow Area = Inflow = Outflow = 1.049 ac, 54.04% Impervious, Inflow Depth = 34.77" for 100 yr event 48.37 cfs @ 12.12 hrs, Volume= 3.041 af 48.23 cfs @ 12.14 hrs, Volume= 3.041 af, Atten= 0%, Lag= 0.7 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Max. Velocity= 5.50 fps, Min. Travel Time= 0.8 min Avg. Velocity = 1.11 fps, Avg. Travel Time= 3.7 min Peak Storage= 2,192 cf @ 12.14 hrs Average Depth at Peak Storage3 0.75' Bank-Full Depth3 0.50', Capacity at Bank-Full3 23.76 cfs 5.00’ x 0.50' deep channel, n= 0.030 Short grass Side Slope Z-value= 10.0 V Top Width3 15.00' Length3 250.0' Slope3 0.0400 '/' Inlet Invert3 590.00', Outlet Invert3 580.00' Page 57