Alpine Lake vs Red Rock Lake
Water quality, depth, fish species, and recreation comparison.
Alpine Lake and Red Rock Lake both received the same overall water quality grade of B (Good). Both are in Cook County, Minnesota.
Alpine Lake and Red Rock 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: Alpine Lake (B) and Red Rock 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.
Alpine Lake
Good clarity, visible to about 12 ft.
Red Rock Lake
Good clarity, visible to about 12.7 ft.
Side-by-Side Metrics
| Metric | Alpine Lake | Red Rock Lake |
|---|---|---|
| Overall Grade | B (Good) | B (Good) |
| Water Clarity | 12 ft | 12.7 ft |
| Phosphorus | No data | No data |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 65 ft | 64 ft |
| Surface Area | 908.63 acres | 450.9 acres |
| Public Access | No | No |
| Fish Species | 0 | 1 |
| Trophic State | mesotrophic | mesotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Both lakes earn the same Grade B. The tiebreakers come down to clarity (Alpine Lake: 12 ft, Red Rock Lake: 12.7 ft) and what you want from the lake. Alpine Lake has fewer fish species than Red Rock Lake.