Regulatory Notices

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US Army Corps of Engineers

Northwestern Division Website

State Regulatory Programs

Category: RGP-MT

8 Apr 2026
RGP-02-MT: Fish Barriers, Ladders, Screens & Traps within the State of Montana

Expiration date: 3/18/2029
Fish Barriers, Ladders, Screens & Traps within the State of Montana
26 Aug 2025
Regional General Permit 14-MT

Expiration date: 3/17/2028
REGIONAL GENERAL PERMIT 14 (RGP-14-MT) NATURAL DISASTER MITIGATION & EMERGENCY-RELATED ACTIVITIES IN MONTANA
26 Aug 2025
CWA 401 Regional General Permit 02-MT

Expiration date: 3/18/2029
RGP 02-MT 401WQC FISH BARRIERS, LADDERS, SCREENS, & TRAPS WITHIN THE STATE OF MONTANA
26 Aug 2025
Regional General Permit 23-MT
RGP 23-MT: Irrigation Ditch Related Activities In The State Of Montana Applicant: General Public
26 Aug 2025
Regional General Permit 00-05 MT, ND, SD
RGP-00-05: Bank Stabilization on USACE Reservoirs to Protect Culturally Significant Sites (Montana, North Dakota, South Dakota)