Blackduck Lake vs Kabetogama Lake
Water quality, depth, fish species, and recreation comparison.
Blackduck Lake has a higher water quality grade (C, Fair) than Kabetogama Lake (D, Poor). Both are in St. Louis County, Minnesota.
Both Blackduck Lake and Kabetogama 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. These two are within a letter of each other on the rubric — Blackduck Lake (C) versus Kabetogama Lake (D). The deciding factors for a recreational visitor are likely physical (depth, access, fish species) rather than water-quality differences.
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.
Blackduck Lake
Moderate clarity, visible to about 6.8 ft.
Kabetogama Lake
Murky, only visible to about 3.8 ft.
Side-by-Side Metrics
| Metric | Blackduck Lake | Kabetogama Lake |
|---|---|---|
| Overall Grade | C (Fair) | D (Poor) |
| Water Clarity | 6.8 ft | 3.8 ft |
| Phosphorus | No data | No data |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 30 ft | 80 ft |
| Surface Area | 1.2K acres | 24.0K acres |
| Public Access | Yes | Yes |
| Fish Species | 1 | 1 |
| Trophic State | mesotrophic | eutrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Blackduck Lake wins on overall water quality with a Grade C versus Kabetogama Lake's Grade D. Water clarity: 6.8 ft vs 3.8 ft. For fishing diversity, Blackduck Lake also leads with 1 species.