Flows S into Thompson River, N of Kamloops
50°40’54” N 120°20’27 W Google — GeoHack
Earliest known reference to this name is 1875 (Pemberton).
Name officially adopted in 1912. Official in BC — Canada
Identified as “North River” on the reduced copy of the map referred to in the despatch of Governor Douglas of 16 July 1861, and also in Canada Gazette, 14 October 1865. Subsequently designated “North Branch of Thompson River.” The name appears as “Thompson River North Branch” on the 1859 Arrowsmith map and as “North Branch of Thompson” on the 1871 Trutch map.
BC Geographical Names states,
…labelled “Thompson River, North Branch” on Pemberton’s 1871 map of British Columbia
I have been unable to find the Joseph Despard Pemberton 1871 map of British Columbia.
- Arrowsmith, John [1790–1873]. Provinces of British Columbia and Vancouver Island; with portions of the United States and Hudson’s Bay Territories. 1859. UVic
- Arrowsmith, John. “British Columbia, reduced copy of the map referred to in the despatch of Governor Douglas of 16 July 1861.” (1861). University of Victoria
- Trutch, Joseph William [1826–1904]. Map of British Columbia to the 56th Parallel North Latitude. Victoria, B.C.: Lands and Works Office, 1871. University of Victoria
- British Columbia Geographical Names. Government of BC. North Thompson River. BCGN