Resources

Columbia River Basin Illustrated Map

What Makes the Columbia River Basin Unique?

The Columbia River Basin is a 259,000 square mile areal the size of France that includes 2,500 square miles of waterways and lakes. The Basin’s geologic history, topography and hydrologic cycle has provided Northwesterners opportunities to improve their quality of life and economic well-being.

Columbia River Basin Orchards

The Columbia River Basin Watershed and Its Ecosystems

This overview of the watershed and its ecosystems provides a foundation for building on this awareness by examining 1) how hydroelectric projects can affect a river, and 2) enhancement and mitigation efforts being made to address those impacts.

Arrow Lake

Columbia River History

Explore the rich history of the Columbia River and basin, with photos, interactive maps and more.