Tuwasus Creek adopted 12 December 1939 on 92/SE, as labelled on BC Land's map 2B, 1914, and as identified in the 1930 BC Gazetteer.
Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office
Labelled "Tuwasus (25 Mile) Creek" on BC Lands' map 2B, 1914.
Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office
tswásus is the preferred spelling in Ucwalmícwts, the language of the Lower Lillooet people (June 2007 advice from Maurice DePaoli, Cultural Researcher and Heritage Resources Advisor for In-SHUCK-ch Nation.)