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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 ...
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The Bonneville cutthroat trout ( Oncorhynchus clarkii utah) is a subspecies of cutthroat trout native to tributaries of the Great Salt Lake and Sevier Lake. [2] Most of the fish's current and historic range is in Utah, but they are also found in Idaho, Wyoming, and Nevada. This is one of 14 or so recognized subspecies of cutthroat trout native ...
The pre-season forecast for Columbia River sockeye was 198,000 or nearly one-third more fish than last year. The early prognosis appears conservative with over 350,000 fish passing Bonneville Dam ...
pluvial lake (a paleolake created by a change in water balance in the basin) Etymology. Benjamin Bonneville. Surface area. ~20,000 sq mi (51,000 km 2) (at max. lake level) Max. depth. over 980 ft (300 m) Lake Bonneville was the largest Late Pleistocene paleolake in the Great Basin of western North America.
National Fish Passage Program. The National Fish Passage Program provides financial and technical resources to projects that promote the free movement of fish and aquatic life. Common projects include dam removal and fishway construction. Between 1999 and 2023, the program has worked with over 2,000 local partners to open 61,000 mi (98,000 km ...
6,180 GWh [1] The Dalles Lock and Dam is a concrete-gravity run-of-the-river dam spanning the Columbia River, two miles (3 km) east of the city of The Dalles, Oregon, United States. [2] It joins Wasco County, Oregon with Klickitat County, Washington, 192 miles (309 km) upriver from the mouth of the Columbia near Astoria, Oregon.
However, fish counts at Boneville Dam, on the Columbia River below the Deschutes confluence have shown a 10 year (2013–2022) average of 162,988 returning adults, and a four year (2019–2022) average of 97,352, suggesting a recent decline in rates of returning adults. Notes Robert J. Behnke monograph