After finalizing the Navigable Waters Protection Rule, the agencies are developing several memoranda applicable to the definition of “waters of the United States.” Those memoranda will be made available here as they become available. For more information about implementation, see Implementation and Training Materials.
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.- TNW Memo - Elevation and Coordination Procedures for Certain Determinations under the Clean Water Act (PDF)(4 pp, 321 K)
- TNW Memo - Elevation and Coordination Procedures for Certain Determinations under the Clean Water Act - Appendices (PDF)(27 pp, 536 K)
- Ditch Exemptions Memo - Memorandum to the Field on Exemptions from Regulation under Section 404(f)(1)(C) of the CWA for the Construction or Maintenance of Irrigation Ditches and for the Maintenance of Drainage Ditches (PDF)(7 pp, 370 K)
- Ag Memo - Memorandum to the Field Concerning Implementation of the Navigable Waters Protection Rule, Section 404 of the Clean Water Act and the Food Security Act (FSA) of 1985 (PDF)(8 pp, 187 K)
- Ag Memo - Memorandum to the Field Concerning Implementation of the Navigable Waters Protection Rule, Section 404 of the Clean Water Act and the Food Security Act (FSA) of 1985 - Appendix (PDF)(1 pg, 1 MB)
- Memorandum to the Field on Coordination to Ensure Consistent Implementation of the Navigable Waters Protection Rule (PDF)(5 pp, 193 K)