Little Turtle Lake vs Shallow Lake
Water quality, depth, fish species, and recreation comparison.
Shallow Lake has a higher water quality grade (A, Excellent) than Little Turtle Lake (D, Poor). Both are in Itasca County, Minnesota.
Both Little Turtle Lake and Shallow 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. Shallow Lake (A) is materially cleaner than Little 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 — Shallow 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?
Little Turtle Lake
Murky, only visible to about 6 ft.
Shallow Lake
Crystal clear, you can see 16.4 ft down.
Side-by-Side Metrics
| Metric | Little Turtle Lake | Shallow Lake |
|---|---|---|
| Overall Grade | D (Poor) | A (Excellent) |
| Water Clarity | 6 ft | 16.4 ft |
| Phosphorus | No data | 9 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 29 ft | 85 ft |
| Surface Area | 491.68 acres | 538.95 acres |
| Public Access | Yes | Yes |
| Fish Species | 1 | 1 |
| Trophic State | eutrophic | oligotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Shallow Lake wins on overall water quality with a Grade A versus Little Turtle Lake's Grade D. Water clarity: 16.4 ft vs 6 ft. For fishing diversity, Shallow Lake also leads with 1 species.