How Clean Is Osakis Lake?
Osakis Lake is nutrient-rich, with elevated phosphorus and algae. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 10.5 ft. Phosphorus: 75 µg/L. Chlorophyll-a (algae): 9.6 µg/L. Trophic State Index: 54.
Cleanliness Snapshot
| Metric | Osakis Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 10.5 ft | — |
| Phosphorus | 75 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 9.6 µg/L | <10 = clean |
| Trophic State Index | 54 | <50 = clean |
How does Osakis Lake compare?
Osakis Lake's readings run above the Minnesota state average. It ranks #7 of 8 lakes in Todd County on nutrient and algae readings. Multi-year monitoring data shows water quality is improving based on 4 years of records.
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