North Turtle Lake vs Silver Lake
Water quality, depth, fish species, and recreation comparison.
Silver Lake has a higher water quality grade (A, Excellent) than North Turtle Lake (D, Poor). Both are in Otter Tail County, Minnesota.
Both North Turtle Lake and Silver 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. Silver Lake (A) is materially cleaner than North Turtle 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 — Silver 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?
North Turtle Lake
Murky, only visible to about 3.8 ft.
Silver Lake
Good clarity, visible to about 11.3 ft.
Side-by-Side Metrics
| Metric | North Turtle Lake | Silver Lake |
|---|---|---|
| Overall Grade | D (Poor) | A (Excellent) |
| Water Clarity | 3.8 ft | 11.3 ft |
| Phosphorus | 63 µg/L | 15 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 19 ft | 43 ft |
| Surface Area | 1.8K acres | 529.36 acres |
| Public Access | Yes | Yes |
| Fish Species | 1 | 1 |
| Trophic State | eutrophic | mesotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Silver Lake wins on overall water quality with a Grade A versus North Turtle Lake's Grade D. Water clarity: 11.3 ft vs 3.8 ft. For fishing diversity, Silver Lake also leads with 1 species.