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It 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 is 1,243 miles (2,000 kilometers) long, and its largest tributary is the Snake River.
Jul 12, 2024 · Columbia River, largest river flowing into the Pacific Ocean from North America. The Columbia is one of the world’s greatest sources of hydroelectric power and, with its tributaries, represents a third of the potential hydropower of the United States. It is 1,240 miles (2,000 km) long.
The Columbia River Basin covers 258,000 square miles and includes parts of seven states and one Canadian province. In its 1,200 mile course to the ocean, the river flows through four mountain ranges and drains more water to the Pacific Ocean than any other river in North or South America.
Aug 13, 2021 · View of the Columbia River from Mitchell Point, Columbia River Gorge, Oregon. The Columbia River originates from its source in Columbia Lake, which is located at an elevation of 820m, in the Canadian province of British Columbia, close to the Rocky Mountain Trench.
The marine chart shows depth and hydrology of Columbia River on the map. It flows through the following states: Oregon, Washington, British Columbia (Canada) 258000 basin size ( sq mi )
This chart display or derived product can be used as a planning or analysis tool and may not be used as a navigational aid. NOTE: Use the official, full scale NOAA nautical chart for real navigation whenever possible.
The Columbia River: The Columbia River and its tributaries form the dominant water system in the Pacific Northwest. The mainstem of the Columbia rises in Columbia Lake in British Columbia, Canada. After flowing a path for 1,270 miles, the Columbia joins the Pacific Ocean near Astoria, Oregon.
