Birch Lake vs Stony Lake
Water quality, depth, fish species, and recreation comparison.
Stony Lake has a higher water quality grade (A, Excellent) than Birch Lake (A, Excellent). Both are in Cass County, Minnesota.
A
Birch Lake
Cass County, Minnesota
Good clarity, visible to about 13.7 ft.
A
Stony Lake
Cass County, Minnesota
Crystal clear, you can see 23.3 ft down.
Side-by-Side Metrics
| Metric | Birch Lake | Stony Lake |
|---|---|---|
| Overall Grade | A (Excellent) | A (Excellent) |
| Water Clarity | 13.7 ft | 23.3 ft |
| Phosphorus | 12 µg/L | 7 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 45 ft | 50 ft |
| Surface Area | 1.3K acres | 563.21 acres |
| Public Access | Yes | Yes |
| Fish Species | 14 | 12 |
| Trophic State | oligotrophic | oligotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Stony Lake wins on overall water quality with a Grade A versus Birch Lake's Grade A. Water clarity: 23.3 ft vs 13.7 ft. For more fish-species variety, Birch Lake edges ahead with 14 documented species.