2021-04-05_PERMIT FILE - C1981019A ‎(18)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 4/5/2021
• Doc Name: Streeter Pond and Permanent Channels
• Section_Exhibit Name: Exhibit 07 Item 14 Appendix Exh7-14SP
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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21
Structure #Z (Ponds
Streeter Pond
Pond Inputs:
Initial Pool Elev: 6,583.00 ft
Initial Pool: 1.41 ac-ft
*Sediment Storage: 0.00 ac-ft
Dead Space: 20.00%
*No sediment capacity defined
Perforated Riser
Riser Barrel Number of
Riser Height Barrel Barrel Slope Spillway Elev
Diameter (ft) Diameter Length (ft) (o/o) Manning's n (ft) Holes per
(in) (in) Elev
12.00 3.00 18.00 87.00 4.50 0.0150 6,585.00 2
Emergency Spillwax
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
6,588.00 50.00 1.50:1 1.50:1 20.00
Pond Results:
Peak Elevation: 6,585.13 ft
H'graph Detention Time: 10.52 hrs
Pond Model: CSTRS
Dewater Time: 1.06 days
Trap Efficiency: 83.41
Dewatering time is calculated from peak stage to lowest spillway
Elevation-Capacity-Discharge Table
Area Capacity Discharge Dewater
Elevation Time
(ac) (ac-ft) (cfs) (hrs)
6,579.00 0.045 0.000 0.000 Top of Sed. Storage
6,580.00 0.140 0.088 0.000
6,581.00 0.356 0.328 0.000
6,582.00 0.560 0.783 0.000
6,583.00 0.692 1.407 0.000 Low hole SPW#1
6,584.00 0.873 2.188 0.840 11.24*
6,585.00 1.159 3.201 1.188 12.20 Spillway#1
6,585.13 1.169 3.363 1.518 2.00 Peak Stage
6,586.00 1.398 4.478 3.782
Filename: Exhibit 7-14SP Streeter Pond 10 Yr 24 Hr.sc4 Printed 01-19-2021