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Fishing spots, fishing reports, and regulations in

Boulder River

Montana, United States

4.5Β·41 catches

Top fish species at Boulder River

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Boulder River fishing reports

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recently logged catches

6 months ago

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Brown trout

length Β· weight

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recently logged catches

1 month ago

Brook trout

6 in Β· 3 oz

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recently logged catches

10 months ago

Rainbow trout

length Β· weight

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recently logged catches

10 months ago

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Brown trout

25 in Β· 4 lb

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recently logged catches

10 months ago

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Brown trout

24 in Β· 3 lb 6 oz

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recently logged catches

11 months ago

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Brown trout

6 in Β· 2 oz

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General info

Boulder River is a stream located in Park County, Montana, United States. It is also intersecting with Sweet Grass County, Montana. It is most popular for fishing Brown trout, Rainbow trout, and Cutthroat trout.

Location

45Β°30β€²42.8β€³N 110Β°13β€²21.8β€³W
Directions

Amenities

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.

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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.

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Local laws and licenses

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Reviews of Boulder River

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Cities nearby

Bozeman

41.9 miles away

Belgrade

49.6 miles away

Billings

82.9 miles away

Helena

114.2 miles away

Butte

120.5 miles away

Rexburg

139.9 miles away

Jackson

143.5 miles away

Great Falls

146.7 miles away

Ammon

164.6 miles away

Idaho Falls

166.0 miles away

Sheridan

166.2 miles away

Blackfoot

191.4 miles away

Riverton

192.6 miles away

Missoula

204.6 miles away

Chubbuck

210.2 miles away

Pocatello

213.5 miles away

Hailey

243.6 miles away

Smithfield

266.3 miles away

Kalispell

269.1 miles away

North Logan

269.9 miles away

Burley

271.3 miles away

Logan

272.8 miles away

Jerome

287.3 miles away

Twin Falls

292.8 miles away

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FAQ about Boulder River fishing

the Boulder River is a stream located in Park County, Montana, United States. It is also intersecting with Sweet Grass County, Montana. Its coordinates are:
45Β°30β€²42.8β€³N 110Β°13β€²21.8β€³W
.
Find the best fishing spots on the Boulder River by looking at where other anglers have caught fish. This can easily be done in the where it is also possible to see big fish potential and how good fishing is right now along with Navionics depth maps.
The most common species in the Boulder River are:
The latest Boulder River fishing reports are:
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