Fishing Regulations in Montana
Size limits, bag limits, and seasons by species in Montana.
Montana Fish, Wildlife & Parks oversees some of the country's best trout water, from the Madison and Missouri to the Bighorn, along with warmwater fisheries in the east. Many rivers carry their own seasons and harvest rules, so check the regulations for your stretch and species before you keep a fish.
45 species with limits416 special regulation bodies of water
Notable waters
Western Fishing DistrictEastern Fishing DistrictCentral Fishing DistrictHAUSER RESERVOIRLAKE HELENAMISSOURI RIVER — Canyon Ferry Dam to Hauser Dam (includes Hauser ReservoirCLARK FORK RIVER — Thompson Falls Dam to Idaho BorderCLARK FORK RIVER — Perkins Lane Bridge
Applies to: Bighorn Lake
Bighorn Lake
Always open
Daily bag10Possession20
Specific bodies of water may have special regulations.
Always confirm with the official state agency before keeping a fish. Regulations can change and local exceptions may apply.
Check Montana Regulations on the App
Take size limits, bag limits, and seasons for every species with you on the water. CatchVault is on iOS, with Android on the way.