Swan Lake vs Wall Lake
Water quality, depth, fish species, and recreation comparison.
Swan Lake and Wall Lake read the same on nutrients and algae. Both are in Otter Tail County, Minnesota.
Both Swan Lake and Wall 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: Swan Lake and Wall 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.
Swan Lake
Good clarity, visible to about 12.1 ft.
Wall Lake
Moderate clarity, visible to about 8.7 ft.
Side-by-Side Metrics
| Metric | Swan Lake | Wall Lake |
|---|---|---|
| Water Clarity | 12.1 ft Better | 8.7 ft |
| Phosphorus | 18 µg/L Better | 21 µg/L |
| Chlorophyll-a (Algae) | 4 µg/L Better | 6.5 µg/L |
| Maximum Depth | 44 ft Better | 34 ft |
| Surface Area | 749 acres | 727 acres |
| Public Access | Yes | Yes |
| Fish Species | 16 | 19 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 Swan Lake or Wall Lake against a different lake.
Verdict
Both lakes earn the same Grade A. The tiebreakers come down to clarity (Swan Lake: 12.1 ft, Wall Lake: 8.7 ft) and what you want from the lake. Swan Lake has fewer fish species than Wall Lake.
Source: EPA National Aquatic Resource Surveys, 2026.