Latoka Lake vs Red Rock Lake
Water quality, depth, fish species, and recreation comparison.
Latoka Lake has a higher water quality grade (A, Excellent) than Red Rock Lake (C, Fair). Both are in Douglas County, Minnesota.
Both Latoka Lake and Red Rock 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. Latoka Lake (A) is materially cleaner than Red Rock 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 — Latoka 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?
Latoka Lake
Crystal clear, you can see 19 ft down.
Red Rock Lake
Murky, only visible to about 3.6 ft.
Side-by-Side Metrics
| Metric | Latoka Lake | Red Rock Lake |
|---|---|---|
| Overall Grade | A (Excellent) | C (Fair) |
| Water Clarity | 19 ft | 3.6 ft |
| Phosphorus | 11 µg/L | 53.5 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 108 ft | 22 ft |
| Surface Area | 766.63 acres | 904.1 acres |
| Public Access | Yes | Yes |
| 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
Latoka Lake wins on overall water quality with a Grade A versus Red Rock Lake's Grade C. Water clarity: 19 ft vs 3.6 ft. For fishing diversity, Latoka Lake also leads with 1 species.