Little Spirit Lake vs Loon Lake
Water quality, depth, fish species, and recreation comparison.
Little Spirit Lake reads lower on nutrients and algae than Loon Lake. Both are in Jackson County, Minnesota.
Both Little Spirit Lake and Loon Lake sit in Minnesota. A same-state comparison strips out the state-level water-quality regime as a variable: any differences in the readings here are about the lakes themselves, not the agencies sampling them. The readings are close: Little Spirit Lake and Loon Lake sit within a narrow band of each other on phosphorus, chlorophyll-a and clarity. The per-parameter table below shows where the small differences actually live.
With readings 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.
Little Spirit Lake
Very murky, less than 3.3 ft of visibility.
Loon Lake
Very murky, less than 0.9 ft of visibility.
Side-by-Side Metrics
| Metric | Little Spirit Lake | Loon Lake |
|---|---|---|
| Water Clarity | 3.3 ft Better | 0.9 ft |
| Phosphorus | 236 µg/L Better | 274 µg/L |
| Chlorophyll-a (Algae) | 19.3 µg/L Better | 110 µg/L |
| Maximum Depth | 8 ft | 8 ft |
| Surface Area | 624 acres | 708 acres |
| Public Access | Yes | Yes |
| Fish Species | 23 Better | 18 |
| Trophic State | eutrophic | hypereutrophic |
A green ✓ marks the better value for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better). Surface area and trophic state carry no tick — a bigger lake is not a better lake.
Swap a lake
Compare Little Spirit Lake or Loon Lake against a different lake.
Verdict
Little Spirit Lake reads lower on nutrients and algae than Loon Lake. Water clarity: 3.3 ft vs 0.9 ft. For fishing diversity, Little Spirit Lake also leads with 23 species.
Source: EPA National Aquatic Resource Surveys, 2026.