The Okanagan Highland and parts of the Shuswap Highland, to the west of the main range, are technically classified as part of the Monashees, but may also be considered part of the Interior Plateau. The Okanagan Highland lies between the Kettle River and Okanagan Lake, south of the Shuswap River. Within this area is the small Sawtooth Range, which lies between the uppermost Shuswap River to the east and Mabel Lake to the west. The portion of the Shuswap Highland south of the North Thompson River, the boundary of which extends south to the Okanagan Highland, may also be included.
^Fifth Annual Report of the Minister of Mines for the Year Ending 31st December, 1917 . Being an Account of Mining Operations for Gold, Coal, Etc., in the Province of British Columbia. The Government of the Province of British Columbia. 1917.