
South Turtle Lake vs Stalker Lake
Water quality, depth, fish species, and recreation comparison.
South Turtle Lake reads lower on nutrients and algae than Stalker Lake. Both are in Otter Tail County, Minnesota.
South Turtle Lake and Stalker 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. These two sit close on the readings, South Turtle Lake versus Stalker Lake. The deciding factors for a recreational visitor are likely physical (depth, access, fish species) rather than water-quality differences.
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.
South Turtle Lake
Good clarity, visible to about 14.1 ft.
Stalker Lake
Murky, only visible to about 6.6 ft.
Side-by-Side Metrics
| Metric | South Turtle Lake | Stalker Lake |
|---|---|---|
| Water Clarity | 14.1 ft Better | 6.6 ft |
| Phosphorus | 20 µg/L Better | 22 µg/L |
| Chlorophyll-a (Algae) | 3.7 µg/L Better | 7.1 µg/L |
| Maximum Depth | 35 ft | 95 ft Better |
| Surface Area | 837 acres | 1,357 acres |
| Public Access | Yes | Yes |
| Fish Species | 13 | 17 Better |
| Trophic State | mesotrophic | mesotrophic |
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 South Turtle Lake or Stalker Lake against a different lake.
Verdict
South Turtle Lake reads lower on nutrients and algae than Stalker Lake. Water clarity: 14.1 ft vs 6.6 ft. For more fish-species variety, Stalker Lake edges ahead with 17 documented species.
Source: EPA National Aquatic Resource Surveys, 2026.