"The name of the town of Skookumchuck dates from the time of fur trade explorer David Thompson and refers to the large rapids in this area on the Kootenay River. Skookumchuck means "strong water", meaning effectively "big rapids" or "heavy current" in the Chinook jargon, and in ordinary use it is a generic name for any rapids, especially the great saltwater rapids at the mouths of the coastal inlets." - Wikipedia