Tranquille Plateau
Feature Type:Plateau - Extensive, elevated region, with either level terrain, or nearly uniform summit levels.
Status: Official
Name Authority: BC Geographical Names Office
Relative Location: N of Kamloops Lake, S of Porcupine Ridge, Kamloops Division Yale Land District
Latitude-Longitude: 50°53'59"N, 120°35'04"W at the approximate centre of this feature.
Datum: WGS84
NTS Map: 92I/15
Origin Notes and History:

Adopted 7 June 1927 on BC map 4M, as labelled on Geological Survey sheet 556 & 557, Kamloops, 1895, and on BC map 1EM, 1915, etc. See Tranquille River for origin information.

Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office