2008-12-11_PERMIT FILE - C1980007 ‎(4)‎

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2008
• Doc Name: 25 Year, 24 Hour Surface Water Control Plan
• Section_Exhibit Name: Exhibit 66 Pond MB-5
• Media Type: D
• Archive: No

SEDCAD 4 for Windows *.--
loop -onn7 Do. 1? I CrV.weh . " "
10
•
Bottom Left Right Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope (%) Manning's n
Width (ft) Mult. x Velocity
Ratio Ratio Depth (ft) % of Depth (VxD) (fps)
0.00 2.0:1 2.0:1 1.5 0.0300 0.30 5.5
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 2.47 cfs
Depth: 0.67 ft 0.97 ft
Top Width: 2.69 ft 3.89 ft
Velocity: 2.73 fps
X-Section Area: 0.90 sq ft
Hydraulic Radius: 0.301 ft
Froude Number: 0.83
Structure #1 (Pond1
MB-5
Pond Inputs:
Initial Pool Elev: 6,043.00 ft
Initial Pool: 0.39 ac-ft
*Sediment Storage: 0.01 ac-ft
Dead Space: 20.00%
*Sediment capacity based on A verage Annual R of 30.0 for 3 year(s)
Straight Pipe
Barrel Barrel Entrance Tailwater
Barrel Manning's Spillway
Diameter Length Loss Depth
Slope (%) n Elev (ft)
(in) (ft) Coefficient (ft)
8.00 75.00 5.75 0.0150 6,043.00 0.90 0.00
Emergency Spillway
Pond Results:
•
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
6,046.40 14.00 3.00:1 3.00:1 12.00
Peak Elevation: 6,043.45 ft
H'graph Detention Time: 1.83 hrs
Pond Model: CSTRS
Dewater Time: 0.70 days
Trap Efficiency: 86.63%
Filename: MB-5.sc4 Printed 10-21-2008