The Fraser Lowland is a landform and physiographic region of the Pacific Northwest, in the Canadian province of British Columbia and the U.S. state of Washington. It includes much of the Lower Mainland region of British Columbia and a portion of Whatcom County, south of the Canada–US border. The region lies adjacent to the coast of the Strait of Georgia between Bellingham Bay and Burrard Inlet. It extends east, through the relatively flat terrain between the Cascade Range and Coast Mountains, to the eastern end of the Fraser Valley near Hope. The Fraser River is the region's primary river, but the region also includes the Nooksack River and the lowlands between the two.