Clearwater Lake vs Thomas Lake
Water quality, depth, fish species, and recreation comparison.
Clearwater Lake has a higher water quality grade (A, Excellent) than Thomas Lake (B, Good). Both are in Lake County, Minnesota.
Clearwater Lake and Thomas 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. The grades are close: Clearwater Lake (A) and Thomas Lake (B) are within one letter of each other on the LakeGrade rubric. The per-parameter sub-grades below will show where the small differences actually live.
With grades this close, the choice between the two lakes turns on non-water-quality factors: depth, fish species, public access, distance from home. The per-lake pages below cover all of those.
Clearwater Lake
Crystal clear, you can see 18 ft down.
Thomas Lake
Good clarity, visible to about 14 ft.
Side-by-Side Metrics
| Metric | Clearwater Lake | Thomas Lake |
|---|---|---|
| Overall Grade | A (Excellent) | B (Good) |
| Water Clarity | 18 ft | 14 ft |
| Phosphorus | No data | No data |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 46 ft | 110 ft |
| Surface Area | 640.18 acres | 1.5K acres |
| Public Access | No | No |
| Fish Species | 0 | 0 |
| Trophic State | oligotrophic | oligotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Clearwater Lake wins on overall water quality with a Grade A versus Thomas Lake's Grade B. Water clarity: 18 ft vs 14 ft. For fishing diversity, Clearwater Lake also leads with 0 species.