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. [1]

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.

Sep 17, 2024 · The Columbia River Basin is a large and complex system with variable stream flows and weather patterns. Fourteen federal projects (dams) in Idaho, Montana, Oregon and...

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.

Several major North American drainage basins and many minor ones border the Columbia River's drainage basin. To the east, in northern Wyoming and Montana, the Continental Divide separates the Columbia watershed from the Mississippi-Missouri watershed, which empties into the Gulf of …

Aug 13, 2021 · The Columbia River drains an area of 670,000 sq. km and has the sixth-largest drainage basin in the United States. The Columbia River drainage basin covers parts of the US States of Idaho , Montana , Wyoming , Utah , Nevada , Oregon, Washington, and the Canadian province of British Columbia.

Columbia River Basin Basin Overview . The Columbia River is the fourth largest river in North America and the largest river in the Pacific Northwest. It drains roughly 260,000 square miles and travels more than 1,240 miles from its headwaters in the Rocky Mountains to its confluence with the Pacific Ocean.

Considered one of North America’s most important water towers, the transboundary Columbia River Basin supplies fresh water to millions of people and has played a vital role in shaping the landscape, culture, and history of the Pacific Northwest.

The Columbia River, the “Great River of the West,” is arguably the most significant environmental force in the Pacific Northwest. It drains 259,000-square-mile, including territory in Oregon, Washington, Idaho, Montana, Nevada, Wyoming, Utah, and British Columbia. Fifteen percent of the basin (39,000 square miles) lies in Canada. The

The Columbia River Basin is located in the Pacific Northwest region of the United States, extending over seven U.S. states and parts of southern British Columbia, Canada (Figure 4–1).