Birkenhead Lake Park established per OIC 2604, 10 August 1963, containing 3,642 ha. Increased in size to include Sockeye Creek area, per Park Amendment Act 1997, 23 July 1997, the whole now containing 9,755 ha. Boundary redescribed per Bill 38-2008: Protected Areas
of British Columbia (Conservancies and Parks)
Amendment Act, 23 May 2008; the whole
now containing approximately 10,439 hectares.
Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office