Corra Linn Dam, Gravity dam on the Kootenay River in British Columbia, Canada

Corra Linn Dam is a gravity dam on the Kootenay River in British Columbia, situated between the towns of Castlegar and Nelson. It is operated by FortisBC and serves both to generate electricity and to regulate water levels in Kootenay Lake.

Corra Linn Dam opened in 1932 as a run-of-the-river plant barred from raising Kootenay Lake. After the 1938 Idaho floods, the International Joint Commission approved two measures: excavating Grohman Narrows in 1939 and allowing the dam to raise the lake by 2 metres for flood control and power.

The name comes from the Corra Linn Rapids that preceded the dam, themselves named after Cora Linn, the upper fall of the Falls of Clyde in Scotland. The adjacent former train station and neighbourhood took the rapids' name, and the locality has often been misspelled Corra Lynn.

The dam can be seen from public roads, and the area around it has several spots where you can get a good view of the structure. Visiting during the drier months generally gives clearer views of the water and the surrounding landscape.

During the 1961 flood, Kootenay Lake stood 3 metres above the dam's maximum level because Grohman Narrows held water back; models suggest the lake would have been almost 2 metres higher without the 1939 excavation. Between 2005 and 2010, BC Hydro studied further digging at the narrows as a possible "Resource Smart" project.