Columbia Basin
From Wikipedia, the free encyclopedia
Note that Vancouver Island, the green island on the left side of the map, is not actually a part of the Columbia Basin.
The Columbia Basin is a large area of western North America that is drained by the Columbia River, its drainage basin.
The broad, general definition of the Columbia Basin is an area of about 673,396 square kilometres (260,000 square miles), including portions of the Canadian province of British Columbia and the American states of Idaho, Montana, Oregon, Washington, and very small portions of California, Nevada, Utah, and Wyoming. The Columbia Basin extends from the Rocky Mountains in the east to the Pacific Ocean in the west.
Residents of the area surrounding the confluence of the Columbia and Snake rivers — a region centering on the Tri-Cities, Washington metropolitan area — use the term "Columbia Basin" to refer to their own, much smaller region.
The dry flat region at the centre of the Columbia Basin is known as the Columbia River Plateau.
[edit] References
- Floyd, Ben, et. al. "Glossary". (1998) Hanford Reach Protection and Management Program Interim Action Plan. Prosser, Washington: Benton County Planning Department.
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