Montana Regulatory Offices

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 Billings Office

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

 Helena Office

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

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

Public Notices

  • NWO-2011-01760-MT

    Expiration date: 1/26/2024

    The U.S. Army Corps of Engineers, Omaha District, (Corps) is evaluating a request by Montana Freshwater Partners (MFP) to add an In-Lieu Fee (ILF) compensatory mitigation site to the Program’s Instrument, established in January 2013. The Proposed Site Plan (Plan) is the first phase of mitigation site evaluation and is intended to determine whether the site has enough potential to warrant development of a Draft Mitigation Site plan with significantly more detail. This notice is to inform interested parties of the proposed activity and to solicit comments. The purpose of the proposed Viking Creek Wetland and Stream Restoration Project is to restore and enhance the North and South Forks of Viking Creek and associated wetlands near Whitefish, MT (48.427212, -114.333503), to offset impacts to wetlands and streams in the Flathead Watershed (#4). The proposed project will offset lost stream and wetland functions and services that occurred as a result of permits issued in 2021, 2022, and 2023.

  • NWO-2022-00381-MT

    Expiration date: 12/7/2023

    The U.S. Army Corps of Engineers, Omaha District, (Corps) is evaluating a permit application, which would result in permanent and temporary impacts to approximately 0.69 acre(s) of emergent wetlands and approximately 60 linear feet (LF) of stream and ditch waters of the United States. This notice is to inform interested parties of the proposed activity and to solicit comments.

  • Notice of Availability of the Beta Streamflow Duration Assessment Method for the Great Plains

    Expiration date: 9/28/2023

    The U.S. Army Corps of Engineers (Corps) Albuquerque, Chicago, Detroit, Fort Worth, Galveston, Kansas City, Omaha, Rock Island, St. Louis, St. Paul, and Tulsa Districts, and the U.S. Environmental Protection Agency (EPA), Regions 5, 6, 7, and 8, jointly announce the availability of the Beta Streamflow Duration Assessment Method (SDAM) for the Great Plains (dated September 2022). The method is a rapid assessment tool to help distinguish between ephemeral, intermittent, and perennial streamflow at the reach scale for the Northern and Southern Great Plains SDAM Regions. The beta SDAM may help provide technical guidance for identifying waters that may be subject to regulatory jurisdiction under Section 404 of the Clean Water Act; however, this method does not alter or change the definition of “Waters of the U.S.”