Big Wolf Lake vs Little Wolf Lake
Water quality, depth, fish species, and recreation comparison.
Big Wolf Lake has a higher water quality grade (B, Good) than Little Wolf Lake (C, Fair). Both are in Minnesota.
Big Wolf Lake and Little Wolf Lake are both in Minnesota — a same-state head-to-head where the comparison comes down to lake-specific differences in depth, watershed, and monitoring history rather than the broader state-level water-quality regime. The grades are close: Big Wolf Lake (B) and Little Wolf Lake (C) are within one letter of each other on the LakeGrade rubric. The per-parameter sub-grades below will show where the small differences actually live.
With grades this close, the choice between the two lakes turns on non-water-quality factors: depth, fish species, public access, distance from home. The per-lake pages below cover all of those.
Big Wolf Lake
Good clarity, visible to about 11.5 ft.
Little Wolf Lake
Moderate clarity, visible to about 7 ft.
Side-by-Side Metrics
| Metric | Big Wolf Lake | Little Wolf Lake |
|---|---|---|
| Overall Grade | B (Good) | C (Fair) |
| Water Clarity | 11.5 ft | 7 ft |
| Phosphorus | 21 µg/L | 26.5 µg/L |
| Chlorophyll-a (Algae) | No data | 12.7 µg/L |
| Maximum Depth | 57 ft | 24 ft |
| Surface Area | 1,076 acres | 525 acres |
| Public Access | Yes | Yes |
| Fish Species | 18 | 13 |
| Trophic State | mesotrophic | eutrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Big Wolf Lake wins on overall water quality with a Grade B versus Little Wolf Lake's Grade C. Water clarity: 11.5 ft vs 7 ft. For fishing diversity, Big Wolf Lake also leads with 18 species.
Source: EPA National Aquatic Resource Surveys, 2026.