As salmon and steelhead swim upstream, they’re now facing one more challenge in fish ladders. It’s a non-native fish competing for space: the American shad. At Lower Granite Dam on the Lower Snake ...

Add Yahoo as a preferred source to see more of our stories on Google. A chinook salmon jumps upstream in Alameda Creek in November while migrating for spawning. Some salmon have swum further up the ...

BONNEVILLE DAM — The U.S. Army Corps of Engineers is gutting and rebuilding a large section of Bonneville Dam’s fish ladder to make it easier for Pacific lamprey to pass the dam as they return from ...

Adult fall-run Chinook salmon congregate near the Nimbus Hatchery Fish Ladder on the American River in Sacramento County in this October 2012 file photo. (Photo by Carl Costas/California Department of ...

As soon as it rains, coho salmon likely will swim up a small creek to a spawning ground in the west Sonoma County hills that has been impassable to the species for decades. When they come to the ...

Yuba Water Agency officials chose a company to build the lower Yuba River dam bypass and diversion system that has concerned ...

BONNEVILLE DAM, Columbia River, Wash. — There is a new king of the Columbia. Each spring, a chrome tide of fish native to the East Coast floods the Northwest’s mightiest river by the millions. Shad, ...

A B.C. conservation group says it is concerned salmon returns will continue to decline as the federal government cuts funding ...

For the first time in more than a century, salmon will soon have free passage along the Klamath River and its tributaries — a major watershed near the California-Oregon border — as the largest dam ...

The lower half of a fish ladder at Bonneville Lock & Dam in Cascade Locks remains unchanged as upgrades focus on the upper section. A new $8 million project at the Bonneville Lock & Dam aims to make ...