The city is situated on Bellingham Bay which is protected by Lummi Island, Portage Island, and the Lummi Peninsula, and opens onto the Strait of Georgia. It lies west of Mount Baker and Lake Whatcom (from which it gets its drinking water) and north of the Chuckanut Mountains and the Skagit Valley. Whatcom Creek runs through the center of the city. Bellingham is south of the US-Canada border and southeast of Vancouver.