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.

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 mi (2,000 km) long, and its largest tributary is the Snake River.

Mar 27, 2025 · 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: 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 …

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 …

The Columbia River is the largest river in the Pacific Northwest, flowing through Canada and the United States. It is known for its dramatic landscapes, hydroelectric dams, and rich cultural history. Explore its geography, significance, and modern challenges.

Columbia River nautical chart. The marine chart shows depth and hydrology of Columbia River on the map. It flows through the following states: Oregon, Washington, British Columbia (Canada)

Columbia River : Charts and Maps, ONC and TPC Charts to navigate the world. Detailed topographic Maps to explore the Americas.

Columbia River, Columbia River. Outflow: Pacific Ocean. Countries: Canada, United States. Length: 2 000 km.

Nov 1, 2019 · This map shows the Columbia River Drainage Basin and the river with dark purple line. Two fifth of the river's course, some 500 miles (800 km) of its 1,240 miles (2,000 km) length, lies in Canada, between its headwaters in British Columbia and the US border.