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Bathymetric map of the mouth of the Columbia River. ... At one time, the Columbia was one of the top salmon-producing river systems in the world. [134]
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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
Bathymetric map of the Columbia River mouth: isobaths at five-foot (1.5 m) intervals, 15–310 feet (4.6–94.5 m). Sandbars in yellow. The Columbia Bar is a system of bars and shoals at the mouth of the Columbia River spanning the U.S. states of Oregon and Washington.
Largest rivers in the world by volume discharge: River Average discharge (km 3 /year) at mouth ... Columbia: Astoria: 7,407 2,230 19,100 Pacific Ocean [29] [132] 21
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 ...
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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