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LakeQuality

warmouth Lakes in Minnesota

Found in 2 Minnesota lakes

warmouth is a rough-fish species — typically common in productive, nutrient-rich lakes, sometimes treated as a management nuisance by anglers targeting game-fish. 2 lakes carry documentation. warmouth is narrowly distributed — only 2 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 warmouth lake list below against the LakeGrade rubric: lakes with both an A or B grade and warmouth documented are the best places to start for recreational targeting.

2
Minnesota Lakes
B
Avg. Grade
1
Grade A Lakes
2
Counties

Best warmouth Lakes in Minnesota

RankLakeCountyGradeClarityDepth
1Big Ole LakeItascaA21.8 ft65 ft
2Winona LakeWinonaD2.6 ft38 ft

Frequently Asked Questions

How many Minnesota lakes have warmouth?

warmouth are found in 2 lakes in Minnesota. The average water quality grade of these lakes is B (Good).

What are the best warmouth lakes in Minnesota?

The best warmouth lakes in Minnesota by water quality are Big Ole Lake, Winona Lake.

Source: EPA National Aquatic Resource Surveys, 2026.