"Columbia River Basin"

The Columbia River Basin drains 260,000 square milesor about 673,396 square kilometres of the Pacific Northwest region of North America that includes the southeastern British Columbia in Canada, most of the U.S. states of Washington, Oregon, Idaho, and western Montana, as well as small areas of Utah, Nevada, and Wyoming.

Columbia River Basin
Creative Commons Attribution Share AlikeColumbia River Basin - Credit: Kmusser