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Dam: Chief Joseph Dam.
Columbia River. River Mile 545.1
Constructed: 1961 (units 1-16),
1979 (units 17-27)
U.S. Army Corps of Engineers,
Seattle District
Full Pool: 956.0 feet
Minimum Pool: 930.0 feet
Powerhouse Capacity:
Nameplate capacity: 16 @ 64 MW, 11
@ 95 MW, 2069 MW total
Overload capacity: 16 @ 88.3 MW, 11
@ 109.3 MW, 2614 MW total
Station service units:
2 @ 3 MW, 6 MW total
Hydraulic capacity: 219 kcfs
Spillway: 980 feet, 19 gates
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Wells Dam
Doulgas County Public
Utilities District
Dam: Wells Dam
Columbia River. River Mile 515.8
Constructed: 1967
Owner: Douglas County PUD No. 1
Normal Operating Pool: 771.0-781.0 feet
Powerhouse Capacity:
Nameplate rating:
10 @ 77.43 MW, 774.3 MW total
Maximum capacity 1: 840 MW total
Hydraulic capacity: 220 kcfs
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