Big Mcdonald Lake vs Sybil Lake
Water quality, depth, fish species, and recreation comparison.
Big Mcdonald Lake and Sybil Lake both received the same overall water quality grade of A (Excellent). Both are in Otter Tail County, Minnesota.
A
Big Mcdonald Lake
Otter Tail County, Minnesota
Crystal clear, you can see 16.4 ft down.
A
Sybil Lake
Otter Tail County, Minnesota
Crystal clear, you can see 20 ft down.
Side-by-Side Metrics
| Metric | Big Mcdonald Lake | Sybil Lake |
|---|---|---|
| Overall Grade | A (Excellent) | A (Excellent) |
| Water Clarity | 16.4 ft | 20 ft |
| Phosphorus | 11 µg/L | 9 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 46 ft | 74 ft |
| Surface Area | 991.7 acres | 682.86 acres |
| Public Access | Yes | Yes |
| Fish Species | 15 | 16 |
| Trophic State | oligotrophic | oligotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Both lakes earn the same Grade A. The tiebreakers come down to clarity (Big Mcdonald Lake: 16.4 ft, Sybil Lake: 20 ft) and what you want from the lake. Big Mcdonald Lake has fewer fish species than Sybil Lake.