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-2022-00494

Portland District
Published Jan. 23, 2026
Expiration date: 6/24/2026

NWP-2022-00494

Expiration Date: 23 February 2026

Applicant: Wallowa Lake Irrigation District (WLID)

Location: The project site is located at the Wallowa Lake Dam, in Wallowa Lake, the Wallowa River, and Silver Lake Ditch near Joseph, Wallowa County, Oregon.

Purpose: An application for a Department of the Army permit to rehabilitate the Wallowa Lake Dam to correct dam safety hazards that were identified in 1996 and to improve fish passage