The Kamloops Forest Region includes the Kamloops and Okanagan Timber Supply Areas (TSAs), as well as the Lillooet and Merrit Forest Districts. Within this region are areas of large, contiguous prairie, dominuted by bluebunch wheatgrass mixed with a variety of forbs. At increasing elevations, bluebunch wheatgrass is replaced by rough fescue as the climax dominant of the upper grasslands.