Silver lamprey Lakes in Michigan

Rough fish like Silver lamprey are often associated with eutrophic, nutrient-loaded waters. Their presence — documented in 7 Michigan lakes — is often a signal of how the rest of the fishery is functioning. Silver lamprey is narrowly distributed — only 7 lakes in Michigan 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.