Silver lamprey Lakes in Minnesota & Wisconsin

Silver lamprey is a rough-fish species — typically common in productive, nutrient-rich lakes, sometimes treated as a management nuisance by anglers targeting game-fish. 7 lakes carry documentation. Silver lamprey is narrowly distributed — only 0 Minnesota lakes and 7 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 Silver lamprey lake list below against the LakeGrade rubric: lakes with both an A or B grade and Silver lamprey documented are the best places to start for recreational targeting.