2021-04-05_PERMIT FILE - C1981019A ‎(5)‎

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

SEDCAD 4 for Windows
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23
Riser
Diameter (ft) Diameter Length (ft) (Barrel Number of
Riser Height Barrel Barrel Slope Spillway Elev
qo) Manning s n (ft) Holes per
(in) (in) Elev
18.00 10.00 18.00 122.00 4.00 0.0150 6,952.00 2
Emergency Spillway
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width(ft)
6,954.00 20.00 2.00:1 2.00:1 20.00
Pond Results:
Peak Elevation: 6,949.31 ft
H'graph Detention Time: 12.83 hrs
Pond Model: CSTRS
Dewater Time: 1.87 days
Trap Efficiency: 89.38%
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)
6,930.00 0.001 0.000 0.000 Top of Sed. Storage
6,931.00 0.036 0.014 0.000
6,932.00 0.076 0.069 0.000
6,933.00 0.110 0.161 0.000
6,934.00 0.134 0.283 0.000
6,935.00 0.156 0.428 0.000
6,936.00 0.178 0.595 0.000
6,937.00 0.201 0.785 0.000
6,938.00 0.226 0.998 0.000
6,939.00 0.252 1.237 0.000
6,940.00 0.280 1.504 0.000
6,941.00 0.310 1.799 0.000
6,942.00 0.340 2.123 0.000
6,943.00 0.373 2.480 0.000
6,944.00 0.409 2.871 0.000 Low hole SPW#1
6,945.00 0.446 3.298 0.473 10.94*
6,946.00 0.486 3.764 0.669 8.43*
6,947.00 0.527 4.270 0.819 8.25
6,948.00 0.571 4.819 0.945 7.55
6,949.00 0.615 5.412 1.057 7.20
6,949.31 0.629 5.608 1.088 2.45 Peak Stage
Filename: East Taylor Pond 10 Yr 24 Hr Post Mine.sc4 Printed 03-24-2021