Article: YAKIMA PROJECT 'FLIP-FLOP' OPERATION TO BEGIN

The U.S. Department of the Interior's Bureau of Reclamation issued the following press release:

The Bureau of Reclamation announced that it has begun the annual "flip-flop" operation in the Yakima Basin by gradually reducing flows in the upper arm of the Yakima River and increasing flows in the Naches River with increased water releases from Rimrock Reservoir.

The purpose of the "flip-flop" operation is to encourage spring Chinook salmon to spawn at relatively low flows so that less water is required during the winter to keep the egg nests, also known as redds, covered. This water operation also reduces impacts on irrigation water supply during the next season.

On September 3, Reclamation ...

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