Kootenay Lake is a lake located in British Columbia, Canada and 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. Kootenay Lake has a year-round toll-free ferry that crosses between Kootenay Bay and Balfour, and is a popular summer tourist destination.