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LakeQuality

longnose sucker Lakes in Minnesota

Found in 9 Minnesota lakes

longnose sucker is a rough-fish species — typically common in productive, nutrient-rich lakes, sometimes treated as a management nuisance by anglers targeting game-fish. 9 lakes carry documentation. longnose sucker is narrowly distributed — only 9 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 longnose sucker lake list below against the LakeGrade rubric: lakes with both an A or B grade and longnose sucker documented are the best places to start for recreational targeting.

9
Minnesota Lakes
D
Avg. Grade
0
Grade A Lakes
2
Counties

Best longnose sucker Lakes in Minnesota

RankLakeCountyGradeClarityDepth
1Rainy LakeSt. LouisC9.5 ft161 ft
2Rainy LakeSt. LouisC7.2 ft161 ft
3Rainy LakeKoochichingC7.5 ft161 ft
4Rainy LakeKoochichingD3.6 ft161 ft
5Rainy LakeSt. LouisD5.9 ft161 ft
6Rainy LakeKoochichingD6.6 ft161 ft
7Rainy LakeKoochichingD4.9 ft161 ft
8Rainy LakeKoochichingD3.6 ft161 ft
9Rainy LakeKoochichingD5.2 ft161 ft

Frequently Asked Questions

How many Minnesota lakes have longnose sucker?

longnose sucker are found in 9 lakes in Minnesota. The average water quality grade of these lakes is D (Poor).

What are the best longnose sucker lakes in Minnesota?

The best longnose sucker lakes in Minnesota by water quality are Rainy Lake, Rainy Lake, Rainy Lake, Rainy Lake, Rainy Lake.

Source: EPA National Aquatic Resource Surveys, 2026.