Adopted 3 March 1960 on 82J, as labelled on BC-Alberta boundary sheet # 12, 1916.
Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office
Named in association with Mount Assiniboine, in turn named after the Assiniboine (Stoney) Indians, who hunted in the Rocky Mountains from the 49th parallel to the North Saskatchewan-Athabasca watershed; the name means "those who cook by placing hot stones in water".
Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office