Columbia River
Chemicals of Emerging Concern
The Toxics Reduction Working Group published its strategy for research and monitoring of chemicals of emerging concern in the Columbia River Basin.
Learn More
- Toxics Reduction Action Plan
- State of the River Report
- Fish Contaminant Survey
- Health Advisories
- Protecting Water Quality
- About the Columbia River
Watershed flyover
Watch this flyover graphic showing the size and scope of the Columbia River basin, which covers parts of 7 states. It is the fourth largest watershed in the nation.