EPA says federal dams raise water temperature in Snake River

The Seattle Times

An Environmental Protection Agency report provides details about how federal government dams in the Snake and Columbia river system raise summer water temperatures, hurting endangered salmon runs.

The report made public Tuesday said dams on both rivers play a role in raising water temperatures above 68 degrees, which is the point at which the water becomes harmful to salmon and steelhead.

The Lewiston Tribune said the report also noted that the Snake River often exceeds temperature standards before it enters Washington from Idaho, as does the Columbia River when it enters Washington from Canada.

The report is likely to play a role in the long-simmering debate over the role dams play in the decline of threatened and endangered Snake River salmon and steelhead.

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