News & updates

Expand List item 38418Collapse List item 38418  1 August 2025 - U.S. Army Corps of Engineers Enhances Aquatic Resource Delineation Reporting with New Resources

The U.S. Army Corps of Engineers (USACE) Regulatory Program is pleased to announce the availability of new resources designed to enhance consistency of aquatic resource delineation reports (ARDRs) and facilitate more efficient and more timely USACE reviews.

These resources include:

These resources are intended to promote national consistency and accuracy in documenting aquatic resource delineations, which are critical for assessing project impacts, determining appropriate levels of review, and evaluating compensatory mitigation requirements.

While the use of these resources is encouraged to ensure complete and verifiable ARDRs, they are not mandatory. USACE believes these tools will be valuable in supporting accurate and consistent aquatic resource delineations.

The documents are available on the USACE Regulatory Program's Technical and Biological Resources page, in the Wetlands Delineation and Classification section: https://www.usace.army.mil/Missions/Civil-Works/Regulatory-Program-and-Permits/techbio/

Expand List item 38147Collapse List item 38147  July 3, 2025 - USACE seeks public comments on new NEPA implementing procedures for the Corps Regulatory Program and Section 408 Program.  

The Department of the Army and the U.S. Army Corps of Engineers (USACE) announced we are seeking comments on an interim final rule that establishes new National Environmental Policy Act (NEPA) implementing regulations at Title 33 Code of Federal Regulations (CFR) part 333 for the USACE Regulatory Program and the USACE Section 408 Program. The interim final rule became effective on July 3, 2025 for Regulatory Program permit applications and Section 408 permission requests submitted to the USACE on or after July 3, 2025. The new USACE NEPA implementing procedures at 33 CFR 333 replace the Corps Regulatory Program’s previous NEPA implementing procedures at 33 CFR 325, appendix B.

A public notice soliciting comments on the interim final rule was published in the July 3, 2025, Federal Register at https://www.federalregister.gov/documents/2025/07/03/2025-12360/procedures-for-implementing-nepa-processing-of-department-of-the-army-permits. Department of the Army and USACE will accept written comments through August 4, 2025. Comments may be submitted through the Federal eRulemaking portal at www.regulations.gov at docket number COE-2025-0006.

Expand List item 37949Collapse List item 37949  May 8, 2025 - U.S. Army Corps of Engineers encourages use of Regulatory Request System for an improved permitting experience 

Last year the U.S. Army Corps of Engineers introduced its new Regulatory Request System (RRS), an online application portal that allows the public to submit permit applications and other information when requesting permission to dredge, fill or conduct activities in jurisdictional wetlands and waters of the U.S.

RRS is accessible at https://rrs.usace.army.mil/rrs.

RRS users can submit individual permit applications, general permit pre-construction notifications, jurisdictional determination requests, and other information needed during the permit evaluation process using easy-to-follow online submission forms. Applicants can also track the status of their requests using a user-friendly dashboard. 

RRS benefits the applicant by eliminating the burden associated with the preparation and mailing of paper applications. It also reduces some of the effort associated with processing applications and data entry making the permitting process more efficient. Click here to learn more about the benefits of RRS (RRS Testimonial Video).

For more information on the USACE Regulatory Program visit https://www.usace.army.mil/Missions/Civil-Works/Regulatory-Program-and-Permits/.

For further details or to provide feedback about the RRS, please contact USACE at rrs@usace.army.mil.

Montana Regulatory Office

The Department of the Army Regulatory Program is one of the oldest in the Federal Government. Initially it served a fairly simple, straightforward purpose: to protect and maintain the navigable capacity of the nation's waters. Time, changing public needs, evolving policy, case law and new statutory mandates have changed the complexion of the program, adding to its breadth, complexity and authority.

The Regulatory Program is committed to protecting the Nation's aquatic resources, while allowing reasonable development through fair, flexible and balanced permit decisions. The Corps evaluates permit applications for essentially all construction activities in the Nation's waters, including wetlands.

100 Neill Avenue | Helena, MT | 59601-3329 | Ph: 406-441-1375 | Fax: 406-441-1380
Post Office Box 7032 | Billings, MT | 59103 | Ph: 406-657-5910 | Fax: 406-657-5911
1600 North Ave. West, Suite 105 | Missoula, MT | 59801 | Ph: 406-541-4845 x323 | Fax: 406-541-4849

Email: Montana.Reg@usace.army.mil

Small Montana Regulatory Map

Flood Impacts

Due to the extensive damage caused by the current flooding across the state and our current staffing shortage, we are prioritizing emergency permitting actions at this time. Non-emergency Department of the Army (DA) permit applications and requests associated with pending DA permit applications will be processed as our workload allows but may experience extended processing delays. Jurisdictional Determination (JD) requests and/or Delineation Concurrences (DCs) will still be accepted by the Montana Regulatory Office, but the review and processing of such standalone requests will be based on available resources, likely resulting in extended timelines for these requests to be fully processed.

Flood Response Information

FEMA Montana Severe Storm and Flooding DR-4655-MT

Submit Electronically
Submit applications, request jurisdictional
determinations, request pre-application
meetings, track status, learn about the
Regulatory Program, and more!

Apply for Permits, Jurisdictional Determinations and other Requests

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Expand List item 31108Collapse List item 31108  The Montana Regulatory Office of the U.S. Army Corps of Engineers' Omaha District has transitioned to digital applications.  If it is necessary to provide a hard copy of the application materials, and/or any subsequent material, a digital copy must also be provided for the digital record.

All electronic applications and requests must be sent to Montana.Reg@usace.army.mil

To expedite your request, please include the following information in the body of the email:

  1. Project name
  2. Applicant/Requestor/Client Contact Information (Name, Address, Phone, Email)
  3. Latitude and Longitude (in decimal degrees) of the project area
  4. Location description (Address or Cross Streets, City, County, State)
  5. Type of Request (Jurisdictional Determination, Pre-application Meeting, Regional / Nationwide / Individual Permit, Letter of No Objection / No Permit Required Letter, etc.)
  6. Is this request related to any previous Army Corps reviews?  If so, please provide the Army Corps file number for that review (i.e., NWO-2000-00000).

Attach contents of requests to email:

  1. The preferred document file format is Adobe PDF (.pdf).  We will also accept Word documents in .docx format. The Aquatic Resource/Consolidated Upload Excel spreadsheet must be submitted in .xlsm spreadsheet format.
  2. Digital documents must have sufficient resolution to depict project details.  In order to have the highest quality documents, please convert original digital documents to PDF.  All forms that require signature must be digitally signed or signed manually, scanned and then transmitted electronically.
  3. If transmitting via email, include all information as email attachments, and avoid transmitting information in the body of the email.
  4. All documents (aquatic resource delineations, permit applications, endangered species biological assessment, historic properties reports, etc.) must be submitted as separate files. Do not combine all documents into one Adobe PDF or Word document file.
  5. Name files based on their content. Please do not use company project numbers or acronyms as the sole basis for the file name(s).
  6. Reduce file sizes to the maximum extent possible.

To facilitate sending large file sizes (greater than 10MB):

  1. Use .zip files as attachments. Combine multiple files into a .zip file to compress file size prior to adding as an email attachment.
  2. Send multiple emails. Label each email with same subject line and indicate number of emails. For example:
    • Smith Subdivision Application (1 of 2)
    • Smith Subdivision Application (2 of 2)
  3. For submittals greater than 10MB and less than 8GB, please use the DoD SAFE (Secure Access File Exchange) https://safe.apps.mil/ .  Please contact us at Montana.Reg@usace.army.mil for an access code.

For those who want to submit a paper copy, please send the application package to the address below and include a copy of the entire application package on a CD/DVD.  Please note that we are unable to accept flash drives.

US Army Corps of Engineers
Montana Regulatory Office
100 Neill Ave
Helena, MT 59601-3329

Montana Information and Agency Links

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Expand List item 3817Collapse List item 3817  Agencies and Organizations
Expand List item 3869Collapse List item 3869  General Stream Information
Expand List item 3870Collapse List item 3870  Special Stream Areas
Expand List item 3871Collapse List item 3871  Watersheds
Expand List item 3873Collapse List item 3873  Functional Assessments
Expand List item 3874Collapse List item 3874  General Wetland Information and Guidance