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.
Best warmouth Lakes in Minnesota
| Rank | Lake | County | Grade | Clarity | Depth |
|---|---|---|---|---|---|
| 1 | Big Ole Lake | Itasca | A | 21.8 ft | 65 ft |
| 2 | Winona Lake | Winona | D | 2.6 ft | 38 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.