Bonnington Falls were waterfalls submerged by dams on the Kootenay River between the cities of Castlegar and Nelson, in the West Kootenay region of southern British Columbia, Canada. The upper falls was named after the Falls of Clyde upper falls of Bonnington Linn. In 1896, West Kootenay Power and Light constructed a dam and hydro generating station at the lower falls. At the time, the 51 kilometres high voltage line to the Rossland mines was the longest in the world.