Big Sandy Lake vs Round Lake
Water quality, depth, fish species, and recreation comparison.
Round Lake has a higher water quality grade (A, Excellent) than Big Sandy Lake (C, Fair). Both are in Aitkin County, Minnesota.
C
Big Sandy Lake
Aitkin County, Minnesota
Murky, only visible to about 4.5 ft.
A
Round Lake
Aitkin County, Minnesota
Crystal clear, you can see 15.3 ft down.
Side-by-Side Metrics
| Metric | Big Sandy Lake | Round Lake |
|---|---|---|
| Overall Grade | C (Fair) | A (Excellent) |
| Water Clarity | 4.5 ft | 15.3 ft |
| Phosphorus | 29.5 µg/L | No data |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 84 ft | 59 ft |
| Surface Area | 6.1K acres | 634.03 acres |
| Public Access | Yes | Yes |
| Fish Species | 22 | 15 |
| Trophic State | eutrophic | oligotrophic |
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 Big Sandy Lake's Grade C. Water clarity: 15.3 ft vs 4.5 ft. For more fish-species variety, Big Sandy Lake edges ahead with 22 documented species.