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Montana Regulatory Office

10 West 15th Street, Suite 2200 | Helena, MT | 59626 | 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

The US Army Corps of Engineers, Montana Regulatory Offices, through the Regulatory Program, administer and enforce Section 404 of the Clean Water Act in Montana for the Omaha District. Under CWA Section 404, a permit is required for the discharge of dredged or fill material into waters of the United States. Many waterbodies and wetlands in the nation are waters of the United States and are subject to the Corps' regulatory authority.


 

Small Montana Regulatory Map