Montana Regulatory Offices

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Expand List item 3526Collapse List item 3526  Billings Office

Box 7032
Billings, Montana 59103
Ph: 406-657-5910
Fax: 406-657-5911

Expand List item 3525Collapse List item 3525  Helena Office

100 Neill Avenue
Helena, Montana 59601-3329
Ph: 406-441-1375
Fax: 406-441-1380

Expand List item 3527Collapse List item 3527  Missoula Office
1600 North Ave. West, Suite 105
Missoula, Montana 59801
Ph: 406-541-4845
Fax: 406-541-4849

Public Notices

  • Public Notice: NWP Reissuance Request for Comments - MT

    Expiration date: 8/2/2025

    On June 18, 2025, the U.S. Army Corps of Engineers (Corps) published in the Federal Register its proposal to reissue 56 existing nationwide permits (NWPs) and issue one new NWP. One NWP is not proposed for reissuance. NWPs are general permits issued on a nationwide basis to streamline the authorization of activities that result in no more than minimal individual and cumulative adverse environmental effects. Many of the proposed NWPs require notification to the district engineer before commencing those activities, to ensure that the activities authorized by those NWPs cause no more than minimal individual and cumulative adverse environmental effects. The Federal Register notice is the public’s opportunity to comment on the proposed NWPs, general conditions, and definitions. Comments on national issues relating to these NWPs should be submitted to docket number COE-2025-0002 at www.regulations.gov, or by email to 2026nationwidepermits@usace.army.mil or by mail to U.S. Army Corps of Engineers, Attn: CECW-CO-R, 441 G Street NW, Washington, DC 20314-1000. Instructions for submitting comments are provided in the June 18, 2025, Federal Register notice. Comments on the proposed NWPs are due by July 18, 2025.

  • NWO-2021-00157-MT

    Expiration date: 7/14/2025

    The U.S. Army Corps of Engineers, Omaha District, (Corps) is evaluating a permit application to construct the Malta Corridor Operational Enhancement Project, which would result in the discharge of approximately 2,790 cubic yards of fill material into 1.73 acres of waters of the United States, including wetlands. This notice is to inform interested parties of the proposed activity and to solicit comments.

  • NWO-2011-01760-MT

    Expiration date: 7/6/2025

    The U.S. Army Corps of Engineers, Omaha District, (USACE) is evaluating a request by Montana Freshwater Partners (MFP) to add an In-Lieu Fee (ILF) compensatory mitigation site to the Program’s Instrument, updated in December 2021. The purpose of this public notice is to evaluate the potential of this proposed site plan to adequately compensate for stream and wetland impacts associated with Department of the Army permits pursuant to Section 404 of the Clean Water Act (33 U.S.C. §1344) and/or Section 10 of the Rivers and Harbors Act of 1899 (33 U.S.C. §403). The project proposes to restore and rehabilitate wetlands associated with Kings Creek, Kade Creek and Fowler Coulee. The project area is located at Deep Creek Ranch, approximately 15 miles west of the town of Choteau, in Teton County, Montana.