
Check which species have trophy potential in Sun River Valley Ditch
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Sun River Valley Ditch is a stream located in Cascade County, Montana, United States. It is most popular for fishing Brook trout.
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 Brook trout as of April 22nd, 2026. To view regulations for a different fish species, please click on your preferred species in the drop-down.
Seasons
Bag limit
Salvelinus fontinalis, brookie, coaster, speckled trout
1 ratings
3.7 miles away
4.2 miles away
7.5 miles away
10.8 miles away
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14.4 miles away
16.7 miles away
19.0 miles away
23.1 miles away
26.7 miles away
30.6 miles away
31.5 miles away
31.9 miles away
34.9 miles away
35.6 miles away
36.0 miles away
41.2 miles away
42.4 miles away
57.7 miles away
58.8 miles away
60.5 miles away
60.7 miles away
68.1 miles away
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