The lower Columbia River flows 146 miles from Bonneville Dam to the Pacific Ocean. It is arguably the most important reach of the entire Columbia River, nurturing fish and wildlife in the transition from fresh water to salt water, passing through major cities and towns, flowing through wildlife refuges, supporting ports and a shipping channel, and providing valued recreation opportunities.
History, recreation, environment, culture, jobs, fish and wildlife - there's so much to learn about the lower Columbia River. Explore these pages for topics across the spectrum of interests and increase your lower Columbia River knowledge. The more we know this great river, the more we want to protect it.