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The Federal Register Notice announcing the Clean Water Rule: Definition of Waters of the United States. The effective date for the Clean Water Rule will be 28 August 2015.

Federal Register Notice

USACE HQ Website

The Individual Permit Application Form (ENG Form 4345) expired on 30 Sep. 2015. This form is currently undergoing OMB approval to extend the expiration date. Please continue to use ENG Form 4345 dated Dec 2014 (Expires on 30 Sep. 2015) until further notice. When the expiration date is extended, this form will be updated with a new expiration date. A link to the ENG Form 4345 can be found at the following link. 

HQ Website

The Office of the Assistant Secretary of the Army for Civil Works and the U.S. Environmental Protection Agency have announced the release of the Clean Water Act Rule.

USACE HQ Website

News Release

Information on the 2012 nationwide permits, including the biological opinion dated Nov. 24, 2014, is posted to the USACE web site at the following link.

USACE HQ Website

The Regulatory Program

The Regulatory Program administers and enforces Section 10 of the Rivers and Harbors Act of 1899 and Section 404 of the Clean Water Act.

49 Slough, a water of the U.S.

Under Section 10, a Department of Army permit is required for work or structures in, over, or under navigable waters of the United States. Under Section 404, a Department of Army permit is required for the discharge of dredge/fill material into waters of the United States, including wetlands.

Many water bodies and wetlands in the nation are waters of the United States and are subject to the Department of Army Corps of Engineers Section 404 regulatory authority.  The Corps of Engineers Walla Walla District regulates those navigable waters, waterways, shorelines, wetlands, most perennial and intermittent rivers and streams, natural and man-made lakes and ponds, as well as irrigation, drainage canals and ditches that are tributaries to other waters located within the State of Idaho.

The Department of the Army Regulatory Program is one of the oldest in the federal government. Initially, it served a fairly simple purpose: to protect and maintain the navigable capacity of the nation’s waters. Changing public needs, evolving policy, court decisions and new statutory mandates have changed several aspects of the program, including its breadth, complexity and authority.

Permitting 101


Contact Us

Email us at CENWW-RD or telephone (208) 433-4464.

The Walla Walla Regultory Division's main office is located in Walla Walla, Washington.  Three field offices are located in the State of Idaho:  the Boise office, the Coeur d'Alene office and the Idaho Falls office.

 Click image to view Boundary Map of Walla Walla Regulatory Division: