The Kootenai River Basin is an international watershed 41,900 km² in size, encompassing parts of British Columbia, Montana, and Idaho. The headwaters are located in Kootenay National Park, British Columbia. It is the second largest tributary to the Columbia in terms of runoff volume, and the third largest in terms of watershed area. The construction of Libby Dam in 1972 significantly altered the hydrograph, fish migration patterns, temperatures, nutrient availability, sediment transport, and vegetation dynamics below the dam. The University of Idaho is involved in quantification of the Libby dam impact on River floodplain and channel physical processes, fluvial processes, and riparian vegetation.
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