Island Lake vs Sand Lake
Water quality, depth, fish species, and recreation comparison.
Sand Lake has a higher water quality grade (B, Good) than Island Lake (C, Fair). Both are in Pine County, Minnesota.
Island Lake and Sand 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: Island Lake (C) 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.
Island Lake
Moderate clarity, visible to about 7 ft.
Sand Lake
Good clarity, visible to about 10 ft.
Side-by-Side Metrics
| Metric | Island Lake | Sand Lake |
|---|---|---|
| Overall Grade | C (Fair) | B (Good) |
| Water Clarity | 7 ft | 10 ft |
| Phosphorus | No data | No data |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 42 ft | 47 ft |
| Surface Area | 526.7 acres | 527.23 acres |
| Public Access | Yes | Yes |
| Fish Species | 1 | 1 |
| Trophic State | mesotrophic | mesotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Sand Lake wins on overall water quality with a Grade B versus Island Lake's Grade C. Water clarity: 10 ft vs 7 ft. For fishing diversity, Sand Lake also leads with 1 species.