Osakis Lake vs Smith Lake
Water quality, depth, fish species, and recreation comparison.
Osakis Lake reads lower on nutrients and algae than Smith Lake. Both are in Minnesota.
Osakis Lake and Smith 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, Osakis Lake versus Smith 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.
Osakis Lake
Good clarity, visible to about 10.5 ft.
Smith Lake
Murky, only visible to about 3.6 ft.
Side-by-Side Metrics
| Metric | Osakis Lake | Smith Lake |
|---|---|---|
| Water Clarity | 10.5 ft Better | 3.6 ft |
| Phosphorus | 75 µg/L | 58 µg/L Better |
| Chlorophyll-a (Algae) | 9.6 µg/L Better | 36 µg/L |
| Maximum Depth | 73 ft Better | 30 ft |
| Surface Area | 6,389 acres | 666 acres |
| Public Access | Yes | Yes |
| Fish Species | 18 Better | 15 |
| Trophic State | eutrophic | eutrophic |
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 Osakis Lake or Smith Lake against a different lake.
Verdict
Osakis Lake reads lower on nutrients and algae than Smith Lake. Water clarity: 10.5 ft vs 3.6 ft. For fishing diversity, Osakis Lake also leads with 18 species.
Source: EPA National Aquatic Resource Surveys, 2026.