Origin Notes and History:
Chilanko River adopted in the 9th Report of the Geographic Board of Canada, 1910; not "Chilanco River" as had been spelled on Trutch's 1871 map of BC, etc.
Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office
From a Chilcotin Indian word meaning "many beaver river"
Source: Akrigg, Helen B. and Akrigg, G.P.V; British Columbia Place Names; Sono Nis Press, Victoria 1986 /or University of British Columbia Press 1997