Alexander Lake vs Shamineau Lake
Water quality, depth, fish species, and recreation comparison.
Alexander Lake and Shamineau Lake both received the same overall water quality grade of A (Excellent). Both are in Morrison County, Minnesota.
Both Alexander Lake and Shamineau Lake sit in Minnesota. 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. These two are within a letter of each other on the rubric — Alexander Lake (A) versus Shamineau Lake (A). The deciding factors for a recreational visitor are likely physical (depth, access, fish species) rather than water-quality differences.
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.
Alexander Lake
Crystal clear, you can see 16.5 ft down.
Shamineau Lake
Good clarity, visible to about 12.5 ft.
Side-by-Side Metrics
| Metric | Alexander Lake | Shamineau Lake |
|---|---|---|
| Overall Grade | A (Excellent) | A (Excellent) |
| Water Clarity | 16.5 ft | 12.5 ft |
| Phosphorus | 16 µg/L | 14 µg/L |
| Chlorophyll-a (Algae) | 2.7 µg/L | 4 µg/L |
| Maximum Depth | 64 ft | 52 ft |
| Surface Area | 2,709 acres | 1,434 acres |
| Public Access | Yes | Yes |
| Fish Species | 19 | 18 |
| 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 A. The tiebreakers come down to clarity (Alexander Lake: 16.5 ft, Shamineau Lake: 12.5 ft) and what you want from the lake. Alexander Lake supports more documented fish species.
Source: EPA National Aquatic Resource Surveys, 2026.