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Following is a list of dams and reservoirs in Montana. All major dams are linked below. The National Inventory of Dams defines any "major dam" as being 50 feet (15 m) tall with a storage capacity of at least 5,000 acre-feet (6,200,000 m 3 ), or of any height with a storage capacity of 25,000 acre-feet (31,000,000 m 3 ).
King County has 123 dams—the most of any county in the state. [1] The majority of dams were built between 1960 and 1999. [1] Proposals to remove underused dams and restore fish habitats emerged in the early 21st century with support from the state's Native American tribes; the first major dam removal was the Condit Dam near White Salmon in ...
The Beaverhead River is an approximately 69-mile-long (111 km) tributary of the Jefferson River in southwest Montana (east of the Continental Divide). [1] It drains an area of roughly 4,778 square miles (12,370 km 2).
The nearly 8100 major dams in the United States in 2006. The National Inventory of Dams defines a major dam as being 50 feet (15 m) tall with a storage capacity of at least 5,000 acre-feet (6,200,000 m 3), or of any height with a storage capacity of 25,000 acre-feet (31,000,000 m 3).
In Oregon coastal streams, beaver dams are ephemeral and almost all wash out in high winter flows only to be rebuilt every summer. [40] Migration of adult Atlantic salmon (Salmo salar) may be limited by beaver dams, but the presence of juveniles upstream from the dams suggests that the dams are penetrated by parr. [41]
Two other dams, which aren't affected by the project, will remain farther upstream in Oregon. The removal of the four dams, which were built without tribes’ consent between 1912 and the 1960s ...
John Day Dam and Lake Umatilla (Washington, Oregon) John Day River (Oregon) Willow Creek (Oregon) Rhea Creek; Hinton Creek; Umatilla River (Oregon) McNary Dam and Lake Wallula (Washington, Oregon) Walla Walla River (Washington, Oregon) Touchet River (Washington) Snake River (Washington, Oregon, Idaho, Wyoming; see below for sub-tributaries)
The 107,500-square-mile (278,000 km 2) [5] Snake River watershed drains about 87 percent of the state of Idaho, 18 percent of Washington and 17 percent of Oregon, in addition to small portions of Wyoming, Utah and Nevada. [38]