Minnesota · ranked from DNR surveys
Best largemouth bass lakes in Otter Tail County
The DNR has surveyed largemouth bass in 138 lakes in Otter Tail County. Of those, 87 earn a grade on this site, and the top 10 are ranked below. Grades come from survey catch rates, fish size and trophy history, scored the same way for every lake on the live map.
Wall Lake is first at A+. The DNR caught 150.4 largemouth bass per hour of electrofishing in the 2025 survey, and the biggest was 20 inches. Swan Lake is second at A+, with 236.4 largemouth bass per hour of electrofishing in the 2022 survey, and 46% of its largemouth bass measured over 15 inches. Tenmile Lake is third at A+, and its biggest largemouth bass was 19 inches.
| # | Lake | Grade | Acres | Survey catch rate | Over 15" | Biggest Surveyed | Avg wt | Surveyed |
|---|---|---|---|---|---|---|---|---|
| 1 | Wall Lake | A+ | 727 | 150.4/hr in electrofishing | 29% | 20" | 1.4 lb | 2025 |
| 2 | Swan Lake | A+ | 749 | 236.4/hr in electrofishing | 46% | 19" | 1.7 lb | 2022 |
| 3 | Tenmile Lake | A+ | 1,428 | 163.7/hr in electrofishing | 85% | 19" | 2.3 lb | 2025 |
| 4 | Pebble Lake | A | 195 | 179.9/hr in electrofishing | 21% | 20" | 0.3 lb | 2024 |
| 5 | Middle Lake | A | 225 | 222.9/hr in electrofishing | 18% | 19" | — | 2024 |
| 6 | Sewell Lake | A | 369 | 124.9/hr in electrofishing | 50% | 19" | 1.7 lb | 2024 |
| 7 | North Turtle Lake | A | 1,773 | 80.8/hr in electrofishing | 66% | 18" | — | 2025 |
| 8 | North Tenmile Lake | A | 654 | 95/hr in electrofishing | 19% | 18" | — | 2025 |
| 9 | Twin Lake | A | 369 | 90.6/hr in electrofishing | 32% | 19" | — | 2025 |
| 10 | East Spirit Lake | A | 561 | 144.7/hr in electrofishing | 16% | 17" | 1.1 lb | 2013 |
Also ranked in Otter Tail County: Walleye · Northern pike · Smallmouth bass · Crappie · Bluegill · Yellow perch
All of Minnesota: Best largemouth bass lakes in Minnesota
Grades are based on Minnesota DNR survey data: how many fish the DNR caught (scaled by lake size), how many reached quality size, and the biggest fish measured. Each lake's page has the numbers behind its grade. The table shows each lake's most recent survey year.