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Automatic fish counters are automatic devices for measuring the number of fish passing along a particular river in a particular period of time. Usually one particular species is of interest. One important species studied by fish counters are Atlantic salmon. This species is of interest owing to its ecologically vulnerable status and anadromous ...
Celilo Falls ( Wyam, meaning "echo of falling water" or "sound of water upon the rocks," in several native languages) was a tribal fishing area on the Columbia River, just east of the Cascade Mountains, on what is today the border between the U.S. states of Oregon and Washington. The name refers to a series of cascades and waterfalls on the ...
Fallfish are found in the northeastern United States and eastern Canada, where they inhabit clear streams, lakes, and ponds. They predominantly prefer swift currents, however, they can also be found in well oxygenated pools. As their name suggests they are often found at the base of waterfalls. Before the introduction of fish such as smallmouth ...
Wishram, Washington. / 45.66111°N 120.95889°W / 45.66111; -120.95889. Wishram is an unincorporated community and census-designated place (CDP) in Klickitat County, Washington, United States. The population was 366 at the 2020 census. The site of the historic Celilo Falls is nearby.
The River Conwy is a salmon river, and there are two salmon ladders at the falls. One is a disused Victorian wooden ladder that was destroyed by a storm soon after being built, and incorporating steps hewn into the rock. The second is a modern ladder, built in 1993 at a cost of nearly £1m, which can detect and count every fish that enters.
The Tumwater Falls created an impassable barrier to salmon until 1952, when a fish ladder was built by the Washington Department of Fisheries (now the Washington State Department of Fish and Wildlife), to provide salmon access to the newly constructed fish hatchery located immediately above the falls. Prior to the 1952 hatchery operations, the ...
Wales, 1930. The Devils Hole pupfish ( Cyprinodon diabolis) is a critically endangered species of the family Cyprinodontidae (pupfishes) found only in Devils Hole, a water-filled cavern in the US state of Nevada. It was first described as a species in 1930 and is most closely related to C. nevadensis and the Death Valley pupfish ( C. salinus ).
Loess Bluffs National Wildlife Refuge is a National Wildlife Refuge in northwestern Missouri, United States (formerly Squaw Creek National Wildlife Refuge ). It was established in 1935 by President Franklin D. Roosevelt as a refuge and breeding ground for migratory birds and other wildlife. The refuge comprises 7,350 acres (30 km 2) along the ...