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NW Fishletter #375, November 6, 2017

[11] Rehab Won't Be Finished on Dworshak Dam's Unit 3 Until June 2018

Dworshak Dam's Unit 3 won't be on line until June 2018, Tom Lorz of the Columbia River Inter-Tribal Fish Commission reported to the Fish Passage Advisory Committee on Oct. 17.

Out for repairs since Sept. 1, 2016, and originally scheduled to return to service May 1, 2017, Unit 3 is the dam's largest, and without it, spill regulation at Dworshak becomes a challenge.

Managing spill to keep total dissolved gas levels low is critical to prevent harm to salmon and steelhead juveniles in the hatchery below the dam.

The repair has been plagued with delays and setbacks, including having to replace new but deficient stator bars. -L. B.

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