Fishing spots, fishing reports, and regulations in
Boulder River
Logged catches
Top fish species at Boulder River
Check which species have trophy potential in Boulder River
Boulder River fishing reports
Continue browsing catches and catch locations in the Fishbrain app
When is the Brown trout biting in Boulder River?
Learn what hours to go fishing at Boulder River. Download the app today and get started looking for fishing spots, prepare for your next fishing trip, and try out our BiteTimeβ’ feature, explore fishing spots, and save relevant baits to prepare for your next fishing trip.
Fishing regulations at Boulder River, MT
Disclaimer: Always check local fishing regulations, water access rights and land ownership before fishing, regardless of any catches logged in that area by the Fishbrain community. Fishbrain has mapped millions of acres of government-owned land across the USA to help you identify potential fishing access, but you are responsible for ensuring compliance with all legal requirements.
Fishing regulations in Montana can change throughout the year. Make sure to check this page before fishing for the most up to date rules and regulations for the current season. Local regulations govern when you can fish, the max size of the fish you can keep, how many fish you can keep, and more.
Below you will see fishing regulations for catching species as of June 14, 2025. To view regulations for a different fish species, please click on your preferred species in the drop-down.
FAQ about Boulder River fishing
- Brown trout - 9 members reported to have caught this fish
- Rainbow trout - 6 members reported to have caught this fish
- Cutthroat trout - 5 members reported to have caught this fish
- @gavinfox_99 reported a nice Brown trout.
- @knoxrobbins reported a nice Brook trout.
- @bendomke reported a nice Rainbow trout.
- @calebbeck2528 reported a nice Brown trout.
- @calebbeck2528 reported a nice Brown trout.
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