2009-09-04_PERMIT FILE - C1982056 ‎(4)‎

• Permit No: C1982056
• IBM Index Class Name: Permit File
• Doc Date: 9/4/2009
• Doc Name: MAIN NORTH INTAKE SHAFT
• Section_Exhibit Name: Exhibit 08X 6-ain North Intake Shaft Drainage Designs
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
loon -onn7 o�, 1, i
0
Structure #3 (Lond)
Sediment Pond
Pond Inputs:
Initial Pool Elev: 6,734.20 ft
Initial Po ol: 1.25 ac -ft
*Sediment Storage: 0.00 ac -ft
Dead Space: 0.00%
*Sediment capacity based on Average Annual R of 10.0 for 3 year(s)
Emergency Spillway
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
6,734.20 3.00 2.00:1 2.00:1 12.00
Pond Results:
Peak Elev
6,734.51 ft
H'g raph Detention Time:
0.35 hrs
Pond M odel:
CSTRS
Dewate Time
0.55 day
Trap Efficiency:
97.83%
is Dewatering time is calculated from peak stage to lowest spillway
Elevation - Capacity- Discharge Table
0
Filename: 10 yr 24 hr Perimeter Drainage Ditches.sc4 Printed 04 -24 -2009
Area
Capacity
Discharge Dewater
Elevation
Time
(ac)
(ac -ft)
(cfs) (hrs)
6,730.58
0.050
0.00
0 .000 Top of Sed. Sto
6,73
0.150
0.011
0.0
6,730.78
0 .160
0.025
0.000
6,7 30.80
- - - -
0.162
-- -
0.028
-- --
0.000
- - - - -- -
6,730.86
- ----- -
0.168
- - - - - -
0.038
- -- -----------------------
0.000
6,731.03
0.187
0.068
0.0 00
6,731.20
0.207
0.102
0.000
6,731.37
0.228
0.1
0.000
6,731.54
0.250
0.179
0.000
6 ,731.69
0.270
0.218
0.000
6,731.
0.273
0.223
0.000
6,731.88
0.296
0.272
0.00
6,732.05
0.321
0.324
0.00
6,732.22
0.346
0.381
0.000
6,732.39
0.373
0.442
0.000
6,732.56
0.400
0.508
0.000.
Filename: 10 yr 24 hr Perimeter Drainage Ditches.sc4 Printed 04 -24 -2009