J_2024 05 09_West Orange Stormwater Management Plan

Post Development West Orange C_03 01 12 Prepared byTRC Engineers, Inc. Type III 24-hr 100 yr Rainfall=8.72" Printed 3/14/2012 HvdroCAD® 9.10 s/n 06401 © 2009 HydroCAD Software Solutions LLC Page 56 Summary for Pond MH G: MH G to MH H [57] Hint: Peaked at 709.77' (Flood elevation advised) Inflow Area = Inflow = Outflow = Primary = 1.267 ac, 31.48% Impervious, Inflow Depth = 7.40" for 100 yr event 7.85 cfs @ 12.19 hrs, Volume= 0.782 af 7.85 cfs@ 12.19 hrs, Volume= 0.782 af, Atten= 0%, Lag= 0.0 min 7.85 cfs @ 12.19 hrs, Volume= 0.782 af Routing by Dyn-Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 709.77' @ 12.21 hrs Device Routing #1 Invert Outlet Devices Primary 598.50' 12.0" Round Culvert L= 159.0' Ke= 0.500 Inlet / Outlet lnvert= 598.50’ / 597.50’ S= 0.0063 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior Primary OutFlow Max=7.69 cfs @ 12.19 hrs HW=707.89' TW=688.07' (Dynamic Tailwater) 1=Culvert (Outlet Controls 7.69 cfs @ 9.79 fps) Pond MH G: MH G to MH H Hydrograph I p ~ l - - I----f - -4 - . t_ _ L _ J . . _ l _ i __________r . p i i i 1 1 i i i i i i i t 1 1 1 1 1 “ 1 T t 1 1 S 5: V -i— 4- - 4 —i —I------------------------I-------U _ -I 0 1 23 45 i i i + ■ 1 1 1 1 1 1 1 4 1 1 1 1 1 1 1 t 1 i ■ i. Hi I 1 i 1 1 l 1 i i 1 1 1 1 1 1 1 1 1 1 1 t I 1 1 I 1 1 i 1 i l 1 1 1 1 1 1 | 1 In flow Area=1.267 ac i i p4ak;El0v==7Q9-77: T 1 1 1 1 i i 1 i 1 i 1 i 1 — 1 i 1 i i 1 --------. i 1 1 t 1 i i 1 1 i i 1 ( i i 1 1 I « i i i i 1 I 1 I 1 12.0'* 1 1 1 Round Culvert i i i i i i i i i : n=0.020 i i i — * . i - i . I c-n iwicii'/' \J i i i i i i L=159.0' i i ■')> 1 1 1 1 1 \J m 1 1 1 1 1 1 \J \J ^ 1 1 I 1 1 I 1 1 1 1 1 TfrrrrfrT mm 678 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 i (hours) I Inflow | i Primary | 1 1 1 mrnmw