"U.S. fisheries managers have unveiled a plan seeking to restore dwindling runs of salmon and trout that migrate 900 miles up the Snake River from the Pacific to spawning grounds in Idaho while leaving intact their greatest barrier - four hydropower dams.

The recovery plan, proposed on Thursday, calls for a myriad of measures to ease the increasingly treacherous passage of spring-summer Chinook salmon and steelhead trout through the Snake, a major tributary of the Columbia River in the Pacific Northwest.

The proposal hinges on a combination of efforts that include improving stream habitat, enhancing water quality and installing structural dam modifications along the Snake River system."

Laura Zuckerman reports for Reuters October 28, 2016. [2]