Agnes Lake vs Nibin Lake
Water quality, depth, fish species, and recreation comparison.
Agnes Lake has a higher water quality grade (B, Good) than Nibin Lake (D, Poor). Both are in St. Louis County, Minnesota.
Both Agnes Lake and Nibin 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. Agnes Lake (B) is materially cleaner than Nibin Lake (D). A gap that wide is unlikely to close in a single year of remediation work; it reflects multi-decade differences in the lakes themselves.
For a recreational visitor, the wider grade gap is decisive — Agnes Lake is the better water-quality choice. For a researcher, the gap is the interesting part: what is different about the two watersheds, and which of those differences is mutable?
Agnes Lake
Good clarity, visible to about 13.5 ft.
Nibin Lake
Murky, only visible to about 5.6 ft.
Side-by-Side Metrics
| Metric | Agnes Lake | Nibin Lake |
|---|---|---|
| Overall Grade | B (Good) | D (Poor) |
| Water Clarity | 13.5 ft | 5.6 ft |
| Phosphorus | No data | No data |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 30 ft | 40 ft |
| Surface Area | 1.0K acres | 775.93 acres |
| Public Access | No | No |
| Fish Species | 1 | 1 |
| Trophic State | oligotrophic | eutrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Agnes Lake wins on overall water quality with a Grade B versus Nibin Lake's Grade D. Water clarity: 13.5 ft vs 5.6 ft. For fishing diversity, Agnes Lake also leads with 1 species.