Is Thomas Lake Safe for Swimming?
Thomas Lake in Lake County, Minnesota has a water quality grade of B (Good). Good for swimming, clear water with low algae levels. Water clarity: 14 ft visibility. Always check local health department advisories before swimming.
Key Metrics
| Metric | Value |
|---|---|
| Overall Grade | B (Good) |
| Water Clarity (Secchi Depth) | 14 ft |
| Maximum Depth | 110 ft |
| Location | Lake County, Minnesota |
How does Thomas Lake compare?
With an overall water quality grade of B, Thomas Lake matches or beats the Minnesota state average of Grade C. It ranks #42 of 142 lakes in Lake County by water quality score.
Water clarity (Secchi depth) sits at 14 feet. That counts as exceptional clarity — sunlight penetrates deep, supporting submerged plants and limiting algae.