The Columbia River Treaty has brought significant flood control and power benefits to British Columbia.

Flood damage reduction	Particularly around Trail, Castlegar, Revelstoke and Creston.
Power generation	Assured winter flows for power generation. At-site electricity generation at Mica dam. Ability to develop additional generating facilities including: Kootenay Canal Plant (1974), Revelstoke Dam (1984), Arrow Lakes Generating Station (2002), Brilliant Expansion project (2007). Power generating facilities on the Columbia and Kootenay Rivers generate around 44% of electricity produced in British Columbia.
Jobs/Economic Stimulus	Generating facilities provide jobs, spin off industries, services from ongoing operations/periodic upgrades. Columbia Power Corporation and Columbia Basin Trust jobs and regional investment.
Canadian Entitlement (Canada’s share of the downstream power benefits)	Annual delivery of 1320 megawatts capacity and 4540 gigawatt hours of energy to British Columbia border over last 10 yrs. Worth $120-300M annually.
Construction cost for the Keenleyside (Arrow), Mica, and Duncan dams	Up front cash payments of $64 million for flood control and $254 million for the first thirty years of Canadian Entitlement power.

Impacts of the Columbia River Treaty

Even though the four dams [Duncan, Mica, Arrow (Hugh Keenleyside), Libby] improved flood control and power production, the resulting reservoirs in Canada flooded 60,000 hectares (231 square miles) of valley land.

Flooding impacted traditional First Nations’ sites, agricultural and forestry areas, displaced a dozen communities, including approximately 2,300 people, and impacted fish and wildlife habitat.

The rise and fall of reservoir levels continue to affect the surrounding ecosystems, cultural and recreation interests.

In recognition of the long-term impacts in the region as a result of the Columbia River Treaty and the Columbia River Treaty dams, Columbia Basin Trust (a Crown corporation) was created in 1995 to support social, economic and environmental well-being in the Columbia River Basin.