Tuesday, May 31, 2011

Excess water killing fish at Grand Coulee Dam

Farm-raised steelhead trout are dying by the thousands below Grand Coulee Dam in Washington because federal operators are releasing so much water. Operators say they're trying to make room for massive water flows yet to come. The Rockies are caked with a dense snow-pack and it's starting to melt. Water spilling from the Grand Coulee Dam traps air as it plunges.

That air is pushed into the water, and brings with it gasses toxic to fish. Pacific Aquaculture operates a fish farm below the dam. It says dissolved nitrogen is forming micro-bubbles in the fish's blood, killing 100,000 fish each day. The company is now asking a federal court to intervene. Read more ...

This blog is written by Martin Little, The Aquaculturists, published and supported by the International Aquafeed Magazine from Perendale Publishers
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