Three hydroelectric dams are located on the Campbell River: the John Hart Dam, finished in 1947, which impounds John Hart Lake; upstream, the Ladore Dam, completed in 1949 on Lower Campbell Lake; and the Strathcona Dam, completed 1958, impounding Upper Campbell Lake furthest upstream.[1] Each dam has an accompanying generating station, of which the John Hart Generating Station near the John Hart Dam is the largest. Combined, the three generating stations account for about 11 percent of Vancouver Island's total electricity supply.[2][3] Due to seismic concerns from the age of the generating stations, the John Hart generating station underwent upgrades spanning 2014 to 2019.[4]