How Clean Is Sturgeon Lake?
Sturgeon Lake is among the cleanest lakes in Minnesota. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 13.8 ft. Phosphorus: 12.5 µg/L. Chlorophyll-a (algae): 2.7 µg/L. Trophic State Index: 40.
Cleanliness Snapshot
| Metric | Sturgeon Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 13.8 ft | — |
| Phosphorus | 12.5 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 2.7 µg/L | <10 = clean |
| Trophic State Index | 40 | <50 = clean |
How does Sturgeon Lake compare?
Sturgeon Lake's readings match or beat the Minnesota state average. It ranks #12 of 68 lakes in St. Louis County on nutrient and algae readings. Multi-year monitoring data shows water quality is stable based on 6 years of records.
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