Revised Definition of ‘Waters of the United States’; Conforming was published in the Federal Register on September 8, 2023. View the Corps announcement 8 September 2023 - EPA and the Army Issue Final Rule to Amend 2023 Rule and related announcements about Waters of the United States (WOTUS) on the the USACE Headquarters Regulatory Announcements page.

Regulatory Program Notices

Below are regulatory announcements, in chronological order, which are both current and historical. Current announcements provide information regarding ongoing regulatory processes and happenings. Historical announcements remain posted, as long as they remain up-to-date and applicable, to provide the public with a transparent record of changes and improvements to our program.   Regulatory image of trees over a creek

Regulatory Open House

Portland District
Published Nov. 7, 2023

The U.S. Army Corps of Engineers, Portland District, Regulatory Branch (Corps) is hosting an open house on Tuesday, January 9, 2024 from 9am to 3pm. The event will occur in the Portland State Office Building at 800 NE Oregon Street, Portland, in Conference Room 1A. This room has limited capacity and attendance will be capped at 70 people. If you are interested in attending, please email with your name, organization, phone number, and email address by Friday, December 8, 2023. Please limit attendance to two members
from your organization.

This event will serve as an opportunity for a variety of agencies to provide updates on their regulatory programs. Agencies to present include Corps, National Oceanic and Atmospheric Administration (NOAA)/National Marine Fisheries Service (NMFS), Oregon Department of Environmental Quality (DEQ), Oregon Department of State Lands (DSL), and Oregon Department of Land Conservation and Development (DLCD). The meeting will conclude with an inter-agency Q&A session. This event is an opportunity for consultants, agencies, project proponents, and other members of the public to learn about recent and upcoming changes in regulatory programs throughout Oregon. There will be brief welcoming remarks and introductions, announcements, and presentations. We anticipate limited time for informal conversations regarding specific projects. If you have any comments or questions, please contact Ms. Kate Mott, Policy and Compliance Section Chief, at 503-808-4386 or