Is Carlos Lake Safe for Swimming?
Carlos Lake in Douglas County, Minnesota has a water quality grade of A (Excellent). Excellent for swimming, crystal clear water with minimal algae. Water clarity: 17.2 ft visibility. Phosphorus: 13 µg/L. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | A (Excellent) |
| Water Clarity (Secchi Depth) | 17.2 ft |
| Phosphorus | 13 μg/L |
| Location | Douglas County, Minnesota |
How does Carlos Lake compare?
With an overall water quality grade of A, Carlos Lake matches or beats the Minnesota state average of Grade C. It ranks #12 of 51 lakes in Douglas County by water quality score.
Water clarity (Secchi depth) sits at 17.2 feet. That counts as exceptional clarity — sunlight penetrates deep, supporting submerged plants and limiting algae.