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Pool-and-weir fish ladder at Bonneville Dam on the Columbia River Drone video of a fish way in Estonia, on the river Jägala FERC fish ladder safety sign. A fish ladder, also known as a fishway, fish pass, fish steps, or fish cannon, is a structure on or around artificial and natural barriers (such as dams, locks and waterfalls) to facilitate diadromous fishes' natural migration as well as ...
A dull roar of water rushed over the Chambers Creek Dam at low tide Tuesday morning as small groups of fishermen in galoshes waded into the green-brown estuary, hoping to hook salmon.
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These salmon hatch in small freshwater streams. From there they migrate to the sea to mature, living there for two to six years. When mature, the salmon return to the same streams where they were hatched to spawn. Salmon are capable of going hundreds of kilometers upriver, and humans must install fish ladders in dams to
Two years after the $20 million removal of the Middle Fork Nooksack dam, salmon have safe passage through the river, but none have been seen — so now local tribes and wildlife officials are ...
A new fish passage around the Kletzsch Dam has opened up 54 miles of water for fish to swim upstream. The project is one of many to restore Milwaukee's area of concern.
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The removal of dams on the Klamath River has enabled salmon to swim far upstream to spawn. Wildlife officials have found salmon upstream in Oregon.