river carpsucker Lakes in Minnesota
Found in 10 Minnesota lakes
Rough fish like river carpsucker are often associated with eutrophic, nutrient-loaded waters. Their presence — documented in 10 Minnesota lakes — is often a signal of how the rest of the fishery is functioning. river carpsucker is narrowly distributed — only 10 lakes in Minnesota 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 river carpsucker lake list below against the LakeGrade rubric: lakes with both an A or B grade and river carpsucker documented are the best places to start for recreational targeting.
Best river carpsucker Lakes in Minnesota
| Rank | Lake | County | Grade | Clarity | Depth |
|---|---|---|---|---|---|
| 1 | Lake St. Croix | Washington | B | 5.2 ft | 78 ft |
| 2 | St. Croix Lake | Washington | C | 8.7 ft | 78 ft |
| 3 | Pool of Lake St. Croix | Washington | C | 4.3 ft | 78 ft |
| 4 | Pool on Lake St. Croix | Washington | C | 5.9 ft | 78 ft |
| 5 | Zumbro Lake | Olmsted | D | 4 ft | 43 ft |
| 6 | Madison Lake | Blue Earth | D | 4 ft | 59 ft |
| 7 | Willmar Lake | Kandiyohi | D | 2 ft | 14 ft |
| 8 | Cannon Lake | Rice | D | 4.1 ft | 15 ft |
| 9 | Pepin Lake | Pepin | F | 3 ft | 60 ft |
| 10 | Spring Lake | Dakota | F | 2.1 ft | 17 ft |
Frequently Asked Questions
How many Minnesota lakes have river carpsucker?
river carpsucker are found in 10 lakes in Minnesota. The average water quality grade of these lakes is D (Poor).
What are the best river carpsucker lakes in Minnesota?
The best river carpsucker lakes in Minnesota by water quality are Lake St. Croix, St. Croix Lake, Pool of Lake St. Croix, Pool on Lake St. Croix, Zumbro Lake.
Source: EPA National Aquatic Resource Surveys, 2026.