The EPA and the U.S. Army Corps of Engineers are publishing for public comment a proposed rule defining the scope of waters protected under the Clean Water Act. This is Docket No. EPA-HQ-OW- 2011-0880 in the Federal Register.
- Definition of "Waters of the United States" Under the Clean Water Act (PDF) (88 pp, 801 K)
- Proposed “Definition of ‘Waters of the United States’ Under the Clean Water Act” at 40 CFR 230.2 (PDF) (2 pp, 52 K)