An official website of the United States government.

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.

Section 404 of the Clean Water Act

Federal Register Notice - January 2, 1991

Notice of decision to prohibit the designation of waters of the Unitesd Startes on the South Platte River in Jefferson and Douglas Counties, Colorado as a discharge site for the placement of dredged or fill material.

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