2010-12-17_REVISION - C1981019 ‎(128)‎

• Permit No: C1981019
• IBM Index Class Name: REVISION
• Doc Date: 12/17/2010
• Doc Name: Exhibit 7 Item 23 Erosion and Sedimentation Part 2
• Type & Sequence: PR3
• Email Name: JRS
• Media Type: D
• Archive: No

•
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SEDCAD 4 for Windows
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Pond Inputs:
Pond Results:
Initial Pool Elev: 6,719.50 ft
Initial Pool:
6.50 ac -ft
*Sediment Storage:
23.85 ac-ft
Dead Space:
20,00%
*Sed/ment capacity based on Average Annual R of 19.0 for 1 year(s)
Emergency Spillway
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
6,737.00 20.00 2.00:1 2.00:1 50.00
Peak Elevation: 6,737.79 ft
H'graph Detention Time:
4.90 hrs
Pond Model:
CSTRS
Dewater Time:
0.57 days
Trap Efficiency:
100.00%
Dewatering time is calculated from peak stage to lowest spillway
Elevation -Caps i - Discharge Table
Elevation
Area
(ac)
Capacity
(ac -ft)
Discharge Dewater
Time
(cfs) (hrs)
6,717.19
2.667
0.000
0.000 Top of Sed. Storage
6,717.50
2.707
0.841
0.000
6,718.00
2.770
2.210
0.000
6,718.50
2.831
3.610
0.000
6,719.00
2.893
5.042
0.000
6,719.50
2.956
6.504
0.000
6,720.00
3.020
7.998
0.000
6,720.50
3.084
9.524
01000
6,721.00
3.148
11.082
0.000
6,721.50
3.214
12.672
0.000
6,722.00
3.280
14.296
0.000
6,722.50
3.345
15.952
01000
6,723.00
3.411
17.641
0.000
6,723.50
3.478
19.363
0.000
6,724.00
3.545
21.119
0.000
6,724.50
3.613
22.908
0.000
6,725.00
3.681
24.732
0.000
6,725.50
3.750
26.589
0.000
6,726.00
3.820
28.482
0.000
38
Filename: 25 -year Gollom_Ponds (Without Rlser).sc4
Exh. 7- 23A -99
Printed 01 -20 -2009
Revision Date: 12/15/10
Revision No.: PR -03