Columbia Lake
The Columbia River originates in British Columbia
In British Columbia.
The Pacific Ocean
The Rocky Mountains.
Atlantic provinces
Its source is Columbia Lake in British Columbia, Canada.
columbia river
Columbia river
The Columbia River flows from British Columbia, through Washington State and then creates the border between Washington and Oregon before flowing into the Pacific Ocean The river rises in the Rocky Mountains in British Columbia, Canada, flows northwest and then south into the U.S. state of Washington, then turns west to form most of the border between Washington and the state of Oregon before emptying into the Pacific Ocean.
The river flows from its source in Yellowstone National Park through a series of mountain ranges, canyons, and plains into the Columbia River at Tri-Cities, Washington.
Potomac River
The Columbia River is the major river in Washington.