2009-10-06_PERMIT FILE - C1980005 ‎(11)‎

• Permit No: C1980005
• IBM Index Class Name: Permit File
• Doc Date: 10/6/2009
• Doc Name: 25 Year, 24 Hour SEDCAD4 Modeling
• Section_Exhibit Name: Tab 07 Appendix 7-6c.1 Addendum 7-6c.1B
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
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12
Structure #S (Null)
SIIPM-14
Structure #7 (Null
SIIPM-12 Lower
Structure #9 (Pond
Pond 004
Pond Inputs:
Initial Pool Elev: 6,950.50 ft
Initial Pool: 4.50 ac-ft
*Sediment Storage: 8.86 ac-ft
Dead Space: 20.00%
*5ed1ment capacity based on Average Annual R of 10.0 for 500 year(s)
Emeraencv SDillwa
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
6,950.15 40.00 4,00:1 4.00:1 12.00
0 Pond Results:
Peak Elevation: 6,950.50 ft
H'graph Detention Time: 0.00 hrs
Pond Model: CSTRS
Dewater Time: 0.88 days
Trap Efficiency: 73.18%
Dewatering time is calculated from peak stage to lowest spillway
Elevation-Capacity-Discharge Table

Elevation Area

(ac) Capacity

(ac-ft) Discharge

(cfs) Dewater
Time
(hrs)
6,948.76 2.315 0.000 0.000 Top of Sed. Storage
6,949.00 2.400 0.563 0.000
6,949.50 2.553 1.801 0.000
6,949.52 2.560 1.852 0.000
6,949.80 2.647 2.581 0.000
6,950.00 2.710 3.117 0.000
6,950.15 2.745 3.526 0.000 Spillway tt1
6,950.40 2.802 4.219 5.147 17.55
Filename: Pond 004 TR51_25yr24hr_0909.sc4
Printed 09-03-2009
TR-51 7-6c.1B-12 Revised 09/09