Minnesota · ranked from DNR surveys
Best walleye lakes near Willmar
37 surveyed walleye lakes sit within 25 miles of Willmar; 30 cleared this site's grade rubric, which reads DNR survey catch rates, size structure and trophy history the same way the live map does for every lake. The top 10 are ranked here.
Koronis (main lake) leads at grade A, with 22.3 walleye per net in gill nets in its 2025 survey and a 28-inch fish the biggest measured. Diamond Lake is next at A, 30.3 walleye per net in gill nets in its 2025 survey, 9% of the walleye netted over 20 inches. Minnetaga Lake rounds out the top three at A, a 27-inch fish the biggest measured.
| # | Lake | Grade | Acres | Survey catch rate | Over 20" | Biggest Surveyed | Avg wt | Surveyed |
|---|---|---|---|---|---|---|---|---|
| 1 | Koronis (main lake) | A | 2,968 | 22.3/net in gill nets | 5% | 28" | 1.8 lb | 2025 |
| 2 | Diamond Lake | A | 1,610 | 30.3/net in gill nets | 9% | 27" | 2.1 lb | 2025 |
| 3 | Minnetaga Lake | A | 791 | 40.3/net in gill nets | 4% | 27" | 1.1 lb | 2021 |
| 4 | Green Lake | A | 5,569 | 9.1/net in gill nets | 9% | 28" | 1.5 lb | 2025 |
| 5 | Big Kandiyohi Lake | A | 2,730 | 18/net in gill nets | 15% | 25" | 3 lb | 2024 |
| 6 | Florida Lake | A | 705 | 13.2/net in gill nets | 33% | 27" | 2.1 lb | 2024 |
| 7 | Wakanda Lake | A | 1,760 | 35.2/net in gill nets | 11% | 23" | 1.7 lb | 2024 |
| 8 | Long Lake | A− | 1,573 | 12/net in gill nets | 6% | 27" | 2.7 lb | 2025 |
| 9 | Monongalia Lake | A− | 2,290 | 4.7/net in gill nets | 53% | 27" | 3.7 lb | 2023 |
| 10 | Long Lake | A− | 783 | 13/net in gill nets | 32% | 24" | 2.6 lb | 2025 |
Also ranked near Willmar: Northern pike · Largemouth bass · Smallmouth bass · Yellow perch
All of Minnesota: Best walleye lakes in Minnesota
Grades are this site's rubric over Minnesota DNR survey data (catch per unit effort against DNR benchmarks, size structure, trophy history). See any lake's page for the underlying numbers. Survey years vary by lake; the table shows each lake's latest.