Regulatory Public Notices

The U.S. Army Corps of Engineers regulates activities affecting wetlands and other waters of the United States under Section 10 of the Rivers and Harbors Act of 1899 and Section 404 of the Clean Water Act. Public involvement is central to this process, with input from agencies, tribes, organizations, and citizens helping ensure balanced, informed permit decisions that support development while protecting aquatic resources.

This section provides current and historical regulatory announcements, including project updates and public notices. These materials promote transparency and keep the public informed about ongoing reviews and program developments.

NWP-2023-42-1

Portland District
Published Oct. 24, 2025
Expiration date: 11/23/2025

NWP-2023-42-1

Applicant: Oregon Department of Transportation (ODOT)

Location: Scappoose, Oregon

Purpose: An application for a Department of the Army permit to restore, enhance, and preserve wetlands and tributaries in the project area, establishing an advanced mitigation area for ODOT. The site would provide advanced wetland, waters, and fish habitat mitigation for future ODOT projects that occur within the Lower Willamette 4th Field HUC Watershed.