October 29, 2018 — A U.S. Federal Court in Seattle, Washington, U.S.A. has issued a ruling that is intended to protect salmon and steelhead trout in the Columbia River basin from rising water temperatures.

In the mile-long lakes created by hydropower dams on the rivers, the water temperature has often exceeded 70 degrees Fahrenheit for days at a time, though the Clean Water Act bars the temperature in the river from exceeding 68 degrees. Cold water species such as sockeye and steelhead become stressed at temperatures over 68 degrees and stop migrating when the temperature exceeds 74 degrees.

The ruling instructs the Environmental Protection Agency to protect the species. The EPA will, within 60 days, come up with a “comprehensive plan to deal with dams’ impact on water temperature and salmon survival,” according to Columbia Riverkeeper Executive Director Brett VandenHeuvel, one of the plaintiffs of the case, which was initially filed in February 2017. Other conservation and fishermens’ groups were plaintiffs in the suit as well: Idaho Rivers United, Pacific Coast Federation of Fishermen’s Associations, Snake River Waterkeeper, and The Institute for Fisheries Resources.

Read the full story at Seafood Source