Headquarters U.S. Army Corps of Engineers Announcements

17 November 2025 - EPA & the Army announce proposed rule for updated definition of "Waters of the United States"

Press Operations — Wed, 19 Nov 2025 14:59:00 GMT

U.S. Environmental Protection Agency (EPA) Administrator Lee Zeldin, together with Assistant Secretary of the Army for Civil Works Adam Telle, today announced a proposed rule that would establish a clear, durable, common-sense definition of “waters of the United States” (WOTUS) under the Clean Water Act.

12 March 2025 - EPA and Army Announce Guidance and a "WOTUS Notice: The Final Response to SCOTUS"

Press Operations — Wed, 12 Mar 2025 20:45:00 GMT

On March 12, 2025, the U.S. Environmental Protection Agency and Department of the Army announced a joint memorandum issuing guidance to field staff on implementation of “continuous surface connection” consistent with the U.S. Supreme Court’s May 25, 2023, decision in the case of Sackett v. Environmental Protection Agency. The agencies also announced a Federal Register notice publicizing a series of six listening sessions and a 30-day recommendations docket to solicit feedback on key aspects of the definition of “waters of the United States.”

30 January 2025 - The U.S. Army Corps of Engineers (USACE) is announcing the availability of the draft changes to the 2024 NWPL and its web site to solicit public comments

Press Operations — Thu, 30 Jan 2025 14:00:00 GMT

The U.S. Army Corps of Engineers (USACE), as part of an interagency effort with the U.S. Environmental Protection Agency, the U.S. Fish and Wildlife Service and the U.S. Department of Agriculture Natural Resources Conservation Service, is announcing the availability of the draft changes to the 2024 NWPL and its web site to solicit public comments. The public now has the opportunity to comment on the proposed changes to wetland indicator status ratings for one plant species in the Atlantic and Gulf Coastal Plain and Eastern Mountains, and Piedmont regions and one species in the Midwest and Northcentral and Northeast regions.

8 January 2025 - The U.S. Army Corps of Engineers and the U.S. Environmental Protection Agency Jointly Announce the Availability of the National Ordinary High Water Mark Field Delineation Manual for Rivers and Streams (National OHWM Manual)

Press Operations — Wed, 08 Jan 2025 18:04:00 GMT

The U.S. Army Corps of Engineers (USACE) and the U.S. Environmental Protection Agency (EPA) jointly announce the availability of the Final National Ordinary High Water Mark Field Delineation Manual for Rivers and Streams (Final National OHWM Manual). The Final National OHWM Manual serves as a non-mandatory technical resource which can be used in appropriate situations to assist with identifying and delineating the ordinary high water mark (OHWM) of rivers and streams located throughout the Nation.

27 November 2024: Availability of New and Updated Engineer (ENG) Forms for the USACE Regulatory Program

Press Operations — Wed, 27 Nov 2024 17:00:00 GMT

The U.S. Army Corps of Engineers (USACE) announces the availability of new and updated Engineer (ENG) forms for use in our delivery of the USACE Regulatory Program. These new and updated forms are designed to efficiently and effectively collect information needed to implement our Regulatory Program.

7 November 2024: USACE Antecedent Precipitation Tool (APT) Service Has Been Restored

Press Operations — Thu, 07 Nov 2024 18:00:00 GMT

NOAA’s National Centers for Environmental Information (NCEI), headquartered in Asheville, NC, has restored service to its data center following the impacts from Hurricane Helene. The USACE Antecedent Precipitation Tool (APT), which relies on the NOAA data, is once again operational. There may be some intermittent downtime as NOAA continues to restore and improve service. The APT Team is aware of this issue and therefore there is no need to submit additional error reports to the APT Team.

9 October 2024: The USACE Antecedent Precipitation Tool (APT) is Temporarily Down

Press Operations — Wed, 09 Oct 2024 13:50:00 GMT

NOAA’s National Centers for Environmental Information (NCEI), headquartered in Asheville, NC, has been affected by Hurricane Helene. The NCEI data center is currently shut down. NOAA NCEI’s network service provider is also currently down, and at this point, there is no definitive timeline for when it will be fully operational.

23 September 2024 – Definition of “Waters of the United States” – Rule Status and Litigation Update

Press Operations — Tue, 24 Sep 2024 15:20:00 GMT

On December 30, 2022, the Environmental Protection Agency and the U.S. Department of the Army (“the agencies”) announced the final "Revised Definition of 'Waters of the United States'" rule. On January 18, 2023, the rule was published in the Federal Register, and the rule took effect on March 20, 2023.

19 September 2024 – Principles of Delivery for Mitigation Bank Decisions

Press Operations — Fri, 20 Sep 2024 15:20:00 GMT

The U.S. Army Corps of Engineers issued a document titled “Principles of Delivery for Mitigation Bank Decisions” to implement policy direction provided by the Assistant Secretary of the Army for Civil Works to USACE on 16 September 2024.

15 May 2024 – Permit applications are now available in RRS!

Press Operations — Tue, 14 May 2024 20:00:00 GMT

USACE is pleased to announce that the new national online application portal and management platform, known as the Regulatory Request System (RRS) now includes an electronic submission option for permit applications. This platform has been introduced to modernize our permit application process and to address our users' expectations by providing a straightforward and transparent process for the submittal of permit requests.

13 February 2024 – Final 2022 National Wetland Plant List is Available

Press Operations — Tue, 13 Feb 2024 15:39:00 GMT

The U.S. Army Corps of Engineers, as part of an interagency effort with the U.S. Environmental Protection Agency, the U.S. Fish and Wildlife Service, and the U.S. Department of Agriculture Natural Resources Conservation Service, is announcing the availability of the final 2022 National Wetland Plant List (NWPL).

8 September 2023 – EPA and the Army Issue Final Rule to Amend 2023 Rule

Press Operations — Fri, 08 Sep 2023 20:56:00 GMT

On August 29, 2023, the U.S. Environmental Protection Agency (EPA) and Department of the Army (the agencies) issued a final rule to amend the final “Revised Definition of ‘Waters of the United States’” rule, published in the Federal Register on January 18, 2023. This final rule conforms the definition of “waters of the United States” to the U.S. Supreme Court’s May 25, 2023, decision in the case of Sackett v. Environmental Protection Agency. Parts of the January 2023 Rule are invalid under the Supreme Court’s interpretation of the Clean Water Act in the Sackett decision.

29 August 2023 - To Conform with Recent Supreme Court Decision, EPA and Army Amend "Waters of the United States" Rule

Press Operations — Tue, 29 Aug 2023 18:25:00 GMT

Today, the U.S. Environmental Protection Agency (EPA) and the U.S. Department of the Army (the agencies) announced a final rule amending the 2023 definition of “waters of the United States” to conform with the recent Supreme Court decision in Sackett v. EPA. The agencies are committed to following the law and implementing the Clean Water Act to deliver the essential protections that safeguard the nation’s waters from pollution and degradation. This action provides the clarity that is needed to advance these goals, while moving forward with infrastructure projects, economic opportunities, and agricultural activities.

6 July 2023 – USACE Announces the Availability of the Antecedent Precipitation Tool, Version 2.0

Press Operations — Thu, 06 Jul 2023 20:34:00 GMT

USACE is announcing the availability of the Antecedent Precipitation Tool (APT), version 2.0.0. This new version of the APT contains additional functionalities, to include the incorporation of a newly developed gridded daily precipitation dataset from the National Oceanic and Atmospheric Administration (NOAA) National Centers for Environmental Information (NCEI).

27 June 2023 - UPDATE Supreme Court Ruling in Sackett v. Environmental Protection Agency

Press Operations — Tue, 27 Jun 2023 15:20:00 GMT

The Environmental Protection Agency and the U.S. Department of the Army (agencies) are in receipt of the U.S. Supreme Court's May 25, 2023, decision in the case of Sackett v. Environmental Protection Agency. In light of this decision, the agencies are interpreting the phrase “waters of the United States” consistent with the Supreme Court’s decision in Sackett.

26 May 2023 - Supreme Court Ruling in Sackett v. Environmental Protection Agency

Press Operations — Fri, 26 May 2023 20:28:00 GMT

The U.S. Environmental Protection Agency and U.S. Army Corps of Engineers (the agencies) are in receipt of the U.S. Supreme Court’s May 25, 2023 decision in the case of Sackett v. Environmental Protection Agency. In light of this decision, the agencies will interpret the phrase “waters of the United States” consistent with the Supreme Court’s decision in Sackett. The agencies continue to review the decision to determine next steps.

12 May 2023 - Definition of "Waters of the United States": Rule Status and Litigation Update

Press Operations — Fri, 12 May 2023 20:03:00 GMT

On April 12, 2023, a district court judge in North Dakota issued an order preliminarily enjoining in 24 States the 2023 rule issued by EPA and the Department of the Army defining “waters of the United States.” On May 10, 2023, the U.S. Court of Appeals for the Sixth Circuit issued an order granting the motions of Kentucky and plaintiffs-appellants for an injunction pending appeal of the district court's decision.

21 April 2023 - Definition of "Waters of the United States": Rule Status and Litigation Update

Press Operations — Fri, 21 Apr 2023 16:00:00 GMT

On April 12, 2023, a district court judge in North Dakota issued an order preliminarily enjoining in 24 States the 2023 rule issued by EPA and the Department of the Army defining “Waters of the United States.” On April 20, 2023, the U.S. Court of Appeals for the Sixth Circuit temporarily issued a stay of enforcement of the 2023 Rule until May 10, 2023.

12 April 2023 - Definition of "Waters of the United States": Rule Status and Litigation Update

Press Operations — Wed, 12 Apr 2023 16:00:00 GMT

20 March 2023 - Final Revised Definition of "Waters of the United States" Becomes Effective

Press Operations — Tue, 21 Mar 2023 00:28:00 GMT

On 20 March 2023, the final "Revised Definition of 'Waters of the United States'" rule (the “2023 Rule”) became effective. The 2023 Rule is operative in all U.S. jurisdictions except the states of Idaho and Texas.