Big Pine Lake vs Eagle Lake
Water quality, depth, fish species, and recreation comparison.
Eagle Lake has a higher water quality grade (A, Excellent) than Big Pine Lake (B, Good). Both are in Otter Tail County, Minnesota.
Both Big Pine Lake and Eagle Lake sit in Minnesota. A same-state comparison strips out the state-level water-quality regime as a variable: any grade differences here are about the lakes themselves, not the agencies grading them. The grades are close: Big Pine Lake (B) and Eagle Lake (A) 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 Pine Lake
Moderate clarity, visible to about 8.7 ft.
Eagle Lake
Crystal clear, you can see 22.6 ft down.
Side-by-Side Metrics
| Metric | Big Pine Lake | Eagle Lake |
|---|---|---|
| Overall Grade | B (Good) | A (Excellent) |
| Water Clarity | 8.7 ft | 22.6 ft |
| Phosphorus | 26 µg/L | 5 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 76 ft | 46 ft |
| Surface Area | 4.7K acres | 907.4 acres |
| Public Access | Yes | Yes |
| Fish Species | 20 | 10 |
| Trophic State | mesotrophic | oligotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Eagle Lake wins on overall water quality with a Grade A versus Big Pine Lake's Grade B. Water clarity: 22.6 ft vs 8.7 ft. For more fish-species variety, Big Pine Lake edges ahead with 20 documented species.