Blackwater Lake vs Blackwater Lake
Water quality, depth, fish species, and recreation comparison.
Blackwater Lake has a higher water quality grade (A, Excellent) than Blackwater Lake (B, Good). Both are in Cass County, Minnesota.
Blackwater Lake and Blackwater 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: Blackwater Lake (A) and Blackwater Lake (B) 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.
Blackwater Lake
Good clarity, visible to about 14.1 ft.
Blackwater Lake
Good clarity, visible to about 13.1 ft.
Side-by-Side Metrics
| Metric | Blackwater Lake | Blackwater Lake |
|---|---|---|
| Overall Grade | A (Excellent) | B (Good) |
| Water Clarity | 14.1 ft | 13.1 ft |
| Phosphorus | 11 µg/L | No data |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 67 ft | 67 ft |
| Surface Area | 771.45 acres | 771.45 acres |
| Public Access | Yes | Yes |
| Fish Species | 1 | 1 |
| Trophic State | oligotrophic | mesotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Blackwater Lake wins on overall water quality with a Grade A versus Blackwater Lake's Grade B. Water clarity: 14.1 ft vs 13.1 ft. For fishing diversity, Blackwater Lake also leads with 1 species.