Round Lake vs Sand Lake
Water quality, depth, fish species, and recreation comparison.
Round Lake has a higher water quality grade (A, Excellent) than Sand Lake (B, Good). Both are in Sawyer County, Wisconsin.
Both Round Lake and Sand Lake sit in Wisconsin. 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. The grades are close: Round Lake (A) and Sand 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.
Round Lake
Crystal clear, you can see 21.1 ft down.
Sand Lake
Good clarity, visible to about 9.9 ft.
Side-by-Side Metrics
| Metric | Round Lake | Sand Lake |
|---|---|---|
| Overall Grade | A (Excellent) | B (Good) |
| Water Clarity | 21.1 ft | 9.9 ft |
| Phosphorus | 14.4 µg/L | 23.8 µg/L |
| Chlorophyll-a (Algae) | 1 µg/L | 3.5 µg/L |
| Maximum Depth | 74 ft | 50 ft |
| Surface Area | 3.3K acres | 949 acres |
| Public Access | Unknown | Unknown |
| Fish Species | 0 | 0 |
| Trophic State | oligotrophic | mesotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Round Lake wins on overall water quality with a Grade A versus Sand Lake's Grade B. Water clarity: 21.1 ft vs 9.9 ft. For fishing diversity, Round Lake also leads with 0 species.