An official website of the United States government.

Due to a lapse in appropriations, EPA websites will not be regularly updated. In the event of an environmental emergency imminently threatening the safety of human life or where necessary to protect certain property, the EPA website will be updated with appropriate information. Please note that all information on the EPA website may not be up to date, and transactions and inquiries submitted to the EPA website may not be processed or responded to until appropriations are enacted.

We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Bristol Bay

Bristol Bay Assessment - Final Report (2014)

The EPA developed this assessment to better understand the Bristol Bay watershed and its resources. The assessment reviews, analyzes, and synthesizes information relevant to potential impacts of large-scale mine development on Bristol Bay fisheries and consequent effects on wildlife and Alaska Native cultures in the region. As a scientific assessment, it does not discuss or recommend policy, legal, or regulatory decisions, nor does it outline or analyze options for future decisions. EPA will use the assessment to inform future decision making.

For more information about the assessment, see About EPA's Bristol Bay Assessment


You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.