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LakeQuality

brown trout Lakes in Minnesota

Found in 5 Minnesota lakes

brown trout is a rough-fish species — typically common in productive, nutrient-rich lakes, sometimes treated as a management nuisance by anglers targeting game-fish. 5 lakes carry documentation. brown trout is narrowly distributed — only 5 Minnesota lakes and 0 Wisconsin lakes have a documented record. The constraint is usually habitat: cold water, specific depth profile, or river connection.

Rough-fish-dominant lakes are worth checking the grade on: a rough-fish-heavy fishery often reflects an underlying nutrient-loading problem in the watershed. Cross-reference the brown trout lake list below against the LakeGrade rubric: lakes with both an A or B grade and brown trout documented are the best places to start for recreational targeting.

5
Minnesota Lakes
B
Avg. Grade
4
Grade A Lakes
5
Counties

Best brown trout Lakes in Minnesota

RankLakeCountyGradeClarityDepth
1Big Watab LakeStearnsA20.5 ft123 ft
2Chester LakeCookA39 ft-
3Upper Gull LakeCassA10 ft54 ft
4Island LakeClearwaterA14.1 ft58 ft
5Loon LakeAitkinD4 ft21 ft

Frequently Asked Questions

How many Minnesota lakes have brown trout?

brown trout are found in 5 lakes in Minnesota. The average water quality grade of these lakes is B (Good).

What are the best brown trout lakes in Minnesota?

The best brown trout lakes in Minnesota by water quality are Big Watab Lake, Chester Lake, Upper Gull Lake, Island Lake, Loon Lake.

Source: EPA National Aquatic Resource Surveys, 2026.