Fish ladders were designed to help migrating species like salmon bypass dams but do they actually work? In this video, we explore how fish ladders function, why many fail, and the surprising ...

A crane moves a new bubbler to an awaiting boat at Lower Monumental Dam. The bubbler is designed to cool fish ladder water ...

The river looks free, but three dams across it belie the notion. Boats use locks to bypass dams, but that’s no help for shad, Atlantic sturgeon and other species that try to make it upstream to spawn.

Dams provide energy, water, and protection. But they also block the ancient migration paths of salmon and other fish. Fish ladders are the surprising solution — carefully engineered stair-like ...

Fish adjust by seeking pockets of cooler water in deep pools and channels or at the mouths of springs, streams and other tribaries. But the fish ladders can be a problem. They typically draw at least ...

CENTRAL CITY — The Pinicon Ridge Park Dam is getting a touchup this fall to preserve the ecological benefits from its recent restoration. Linn County Conservation, in partnership with the Iowa ...

KLAMATH FALLS, Ore. — Video captured a Chinook salmon successfully summiting the fish ladder at an upper Klamath River dam this week, according to the Oregon Department of Fish and Wildlife — the ...

A salmon passed through the fish ladder of a key dam on the upper Klamath River on Sept. 24, in what wildlife officials hope is a sign of the iconic fish repopulating ever-greater stretches of the ...