Zosel Dam, which regulates the level of Osoyoos Lake, was constructed in 1987, replacing an earlier dam. The International Osoyoos Lake Board of Control supervises its operation to ensure compliance with conditions in the IJC’s 1982 order of approval, amended in 1985 and 2013.
In 1938, the IJC approved construction and operation of the Cora Linn Dam with conditions related to Kootenay Lake levels and outflows. There are also a number of orders pertaining to dikes along the Kootenay River upstream from the lake, as these can affect water levels at the boundary. The International Kootenay Lake Board of Control supervises the operation of the dam and ensures that conditions set for Kootenay Lake are maintained.
Columbia River Board of Control