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The Kootenay River [7] or Kootenai River [2] is a major river of the Northwest Plateau in southeastern British Columbia, Canada, and northern Montana and Idaho in the United States. It is one of the uppermost major tributaries of the Columbia River, the largest North American river that empties into the Pacific Ocean.
Most outflow is diverted 4.5 kilometres (2.8 mi) past Corra Linn along the Kootenay Canal to the more efficient generating station opened in 1976. Kootenay basin reservoirs provide nearly 7,000,000 acre-feet (8.6 km 3) of storage which constitutes almost half of the 15,500,000 acre-feet (19.1 km 3) stored in Columbia River Treaty reservoirs. [11]
The dam is designed with a selective withdrawal system that allows water passage from various levels of Lake Koocanusa, which allows the operators to moderate water temperatures downstream. [7] The river continues northwest into Idaho, past Bonners Ferry, to Kootenay Lake in Canada and joins the Columbia River.
The Duncan River is in the West Kootenay region of southeastern British Columbia. [4] Entering the North Arm of Kootenay Lake, the river is a major tributary of the Kootenay River, which in turn flows into the Columbia River. The Selkirk Mountains lie to the west and the Purcell Mountains to the east. [5]
The reservoir's storage is over 50% greater than Kootenay Lake. The reservoir is usually filled by August. The Duncan river drainage basin is 2,400 square kilometers. The dam regulates 10% of the water in the Kootenay River basin. [1] Duncan Dam and Libby Dam together ensure operational water levels for the Kootenay Canal and Corra Linn Dam ...
The Purcell Trench, also known as the Kootenay River Valley is a large valley on the western side of the northern part of North America's Rocky Mountains.The trench extends approximately 179 miles (288 km) from Lake Pend Oreille, Idaho, down the Kootenay River (north) to Kootenay Lake, up the north arm to Duncan Lake.
Kootenay Lake is a lake located in British Columbia, Canada.It is part of the Kootenay River.The lake has been raised by the Corra Linn Dam and has a dike system at the southern end, which, along with industry in the 1950s–70s, has changed the ecosystem in and around the water.
The Kootenays are more or less defined by the Kootenay Land District, though some variation exists in terms of what areas are or are not a part.The strictest definition of the region is the drainage basin of the lower Kootenay River from its re-entry into Canada near Creston, through to its confluence with the Columbia at Castlegar (illustrated by a, right).