Regulatory Program Notices

The U.S. Army Corps of Engineers, under the authority granted by Congress, regulates activities that may affect wetlands and other waters of the United States. This authority comes from Section 10 of the Rivers and Harbors Act of 1899 and Section 404 of the Clean Water Act.

Public participation is an important part of this regulatory process. USACE carefully considers input from federal, state, and local agencies, Native American tribes, organizations, and the general public before making any permitting decisions. This inclusive approach helps ensure that regulatory outcomes are fair, balanced, and consistent with the public interest—supporting responsible development while protecting aquatic resources.

This section of our website provides access to information about regulatory projects and public notices. Current announcements share updates on ongoing reviews and opportunities for public comment, while archived materials remain available to maintain transparency and show the evolution of our regulatory program. 

  Regulatory image of trees over a creek

Contact us

*Regulatory phone lines are currently down. Please call 503-201-0797 for any regulatory related issues. 

Phone: 503-808-4385

Regulatory General Email
PortlandRegulatory@usace.army.mil

Application Email
PortlandPermits@usace.army.mil

All Regulatory Contact Information

Customer Survey

Regulatory Notices

NWP-2024-133

Portland District
Published Sept. 18, 2025
Expiration date: 10/18/2025

NWP-2024-133

Applicant: Macadam Bay Homeowners Association

Location: Portland, Oregon (Willamette River)

Purpose: An application for a Department of the Army permit to conduct annual maintenance dredging to maintain safe access to the existing Macadam Bay Marina located on the western bank of the Willamette River adjacent to the Willamette River Federal Navigation Channel.