Tsosayii-aht [soo sah EE aht]
Language of origin Wakashan language family Nuu-chah-nulth language
Feature Type:Falls - Perpendicular or steep descent of water. Variation of Waterfall.
Status: Not official
Other Names: Tsusiat FallsOfficial
Relative Location: Mouth of Tsusiat River, SW side of Vancouver Island between Nitinat Lake and Pachena Point, Barclay Land District
Tags: Indigenous
Latitude-Longitude: 48°41'26"N, 124°55'35"W at the approximate centre of this feature.
Datum: WGS84
NTS Map: 92C/10
Origin Notes and History:

The Huu-ay-aht First Nations' name for Tsusiat Falls is Tsosayii-aht or Cuusayii-aht.

Source: BC place name cards, files, correspondence and/or research by BC Chief Geographer/Geographical Names Office.

The name means "waterfall split in two by a rock". This is the southeast boundary of Huu-ay-aht traditional territory. "Tliishin's land reached the waterfall (Cuusayii-aht) on one side and on the other side went as far as Coleman Creek /Yashitquo-a." (Huu-ay-aht Place Names in the Chief Louie Nookemus historial accounts, c1964, shared September 2009 in the context of the Maa-nulth Treaty.) "My grandfather's domain reached Tsosayii-aht." (also from the Chief Louie Nookemus historical accounts, c1964)

Source: included with note