Established per Order in Council 3349, 30 November 1965, containing 11,360 acres more or less. Boundary redescribed per Bill 17: Protected Areas of British Columbia Act, 12 June 2000, the whole now containing 4597 ha. more or less. Name changed to Tā Ch'ilā Park [a.k.a. Boya Lake Park] per Bill 19-2018: Proctected Areas Amendment Act, the whole now containing 4728 ha. more or less.
Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office