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LakeQuality

longnose sucker Lakes in Minnesota & Wisconsin

Other SpeciesFound in 9 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
Total Lakes
9
Minnesota
0
Wisconsin
D
Avg. Grade
161 ft
Avg. Depth

Water Quality of longnose sucker Lakes

A
0
0%
B
0
0%
C
3
33%
D
6
67%
F
0
0%

Best longnose sucker Lakes by Water Quality

Top 50 lakes with longnose sucker ranked by overall water quality grade.

RankLakeCountyStateGradeDepthSpecies
1Rainy LakeSt. LouisMNC161 ft17
2Rainy LakeSt. LouisMNC161 ft17
3Rainy LakeKoochichingMNC161 ft17
4Rainy LakeKoochichingMND161 ft17
5Rainy LakeSt. LouisMND161 ft17
6Rainy LakeKoochichingMND161 ft17
7Rainy LakeKoochichingMND161 ft17
8Rainy LakeKoochichingMND161 ft17
9Rainy LakeKoochichingMND161 ft17

Frequently Asked Questions

How many lakes have longnose sucker?

longnose sucker are found in 9 lakes across Minnesota and Wisconsin, 9 in Minnesota and 0 in Wisconsin. The average water quality grade of lakes with longnose sucker is D (Poor).

What are the best lakes for longnose sucker?

The best longnose sucker lakes by water quality are Rainy Lake, Rainy Lake, Rainy Lake, Rainy Lake, Rainy Lake. These lakes have the highest water quality grades among all lakes where longnose sucker have been documented by state DNR surveys.

What other fish are found with longnose sucker?

longnose sucker are most commonly found alongside black bullhead, black crappie, burbot, cisco species, lake whitefish. These species share similar habitat preferences in the region's lakes.

Source: EPA National Aquatic Resource Surveys, 2026.