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The Columbia Basin. The Columbia River drainage basin is the drainage basin of the Columbia River in the Pacific Northwest region of North America.It covers 668,000 km 2 or 258,000 sq mi. [1] In common usage, the term often refers to a smaller area, generally the portion of the drainage basin that lies within eastern Washington.
Tributaries and sub-tributaries are hierarchically listed in order from the mouth of the Columbia River upstream. Major dams and reservoir lakes are also noted. Map of the Columbia drainage Basin with the Columbia River highlighted and showing the major tributaries
With an average flow at the mouth of about 265,000 cu ft/s (7,500 m 3 /s), [7] the Columbia is the largest river by discharge flowing into the Pacific from the Americas [25] and is the fourth-largest by volume in the U.S. [7] The average flow where the river crosses the international border between Canada and the United States is 2,790 m 3 /s ...
Dams of the Columbia River Basin. Click to view higher resolution and read legend. Hydroelectric generators in the basin sized by capacity. 17 dams on the British Columbia side of Canada-US border not shown. There are more than 60 dams in the Columbia River watershed in the United States and Canada. Tributaries of the Columbia River and their ...
He traveled the Owyhee River watershed, a high desert drainage that collects water from Oregon, Idaho and Nevada before sending it on to the Columbia. "I tried to get to all of those peripheral ...
The Columbia River and its tributaries generate 40% of U.S. hydropower, irrigate $8 billion in agriculture products and move 42 million tons of cargo annually, according to the Biden administration.
Opened in 1966, it is more than 4 miles long and built to withstand vicious currents and waves and winds of up to 150 mph howling through the Columbia River Gorge. But it was not built for this.
The river flows through Canada and the United States. Almost all of these rapids are now submerged in the reservoirs of dams. The list is not exhaustive; there were numerous minor rapids and riffles, many of which were never named. Map of the Columbia drainage Basin with the Columbia River highlighted and showing the major tributaries