An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Section 404 of the Clean Water Act

Final Determination regarding Big River under CWA Section 404 (signed March 1, 1990)

Final Determination of the U.S. Environmental Protection Agency's Assistant Administrator for Water pursuant to Section 404(c) of the Clean Water Act concerning the proposed Big River water supply impoundment in Kent county, RI.

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