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

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18
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: 6,953.49 ft
Dewater Time: 2.92 days
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
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 7.48*
6,948.00 0.571 4.819 0.945 7.02*
6,949.00 0.615 5.412 1.057 6.78*
6,950.00 0.660 6.049 1.158 7.00
6,951.00 0.706 6.732 1.251 6.85
6,952.00 0.754 7.462 1.337 6.85 Spillway#1
6,953.00 0.804 8.241 8.509 5.00
6,953.49 0.831 8.652 10.251 3.80 Peak Stage
6,954.00 0.857 9.072 12.033 Spillway#2
6,955.00 0.975 9.987 63.138
6,956.00 1.033 10.991 184.415
*Designates time(s) to dewater have been extrapolated beyond the 50 hour hydrograph limit.
Filename: East Taylor Pond 25 Yr 24 Hr Post Mine.sc4 Printed 03-24-2021