Okanagan Highland

The Okanagan Highland is a plateau-like hilly area in British Columbia, Canada, and the U.S. state of Washington (where it is spelled Okanogan Highlands). It lies between the Okanagan Valley on its west and the Kettle River on its east, and geologically is more or less an extension of the Thompson Plateau, which lies west of the Okanagan. The Geographical Names Board of Canada places the northern limit at the Coldstream Valley, east of Vernon, British Columbia, as that is the southern limit of the Shuswap Highland, while its southern limit is the FDR Reservoir (the impounded Columbia River above Grand Coulee Dam) in Washington State. The Canadian definition places the Kettle River Range, Monashee Mountains, and Columbia Mountains east of the Okanagan Highland. While, the description of the "Okanogan Highlands" by the Washington State Department of Natural Resources includes portions of these mountain ranges in their definition of the region.