Julia Lake vs Little Turtle Lake
Water quality, depth, fish species, and recreation comparison.
Julia Lake has a higher water quality grade (A, Excellent) than Little Turtle Lake (C, Fair). Both are in Beltrami County, Minnesota.
Julia Lake and Little Turtle 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. Julia Lake (A) is materially cleaner than Little Turtle Lake (C). 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 — Julia 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?
Julia Lake
Moderate clarity, visible to about 9.2 ft.
Little Turtle Lake
Murky, only visible to about 6.5 ft.
Side-by-Side Metrics
| Metric | Julia Lake | Little Turtle Lake |
|---|---|---|
| Overall Grade | A (Excellent) | C (Fair) |
| Water Clarity | 9.2 ft | 6.5 ft |
| Phosphorus | 21 µg/L | 23.5 µg/L |
| Chlorophyll-a (Algae) | 4.5 µg/L | 12 µg/L |
| Maximum Depth | 43 ft | 25 ft |
| Surface Area | 511 acres | 469 acres |
| Public Access | Yes | No |
| Fish Species | 10 | 15 |
| Trophic State | mesotrophic | eutrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Julia Lake wins on overall water quality with a Grade A versus Little Turtle Lake's Grade C. Water clarity: 9.2 ft vs 6.5 ft. For more fish-species variety, Little Turtle Lake edges ahead with 15 documented species.
Source: EPA National Aquatic Resource Surveys, 2026.