How Clean Is Andrusia Lake?
Andrusia Lake is among the cleanest lakes in Minnesota. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 15.1 ft. Phosphorus: 14.5 µg/L. Chlorophyll-a (algae): 3.6 µg/L. Trophic State Index: 41.
Cleanliness Snapshot
| Metric | Andrusia Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 15.1 ft | — |
| Phosphorus | 14.5 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 3.6 µg/L | <10 = clean |
| Trophic State Index | 41 | <50 = clean |
How does Andrusia Lake compare?
Andrusia Lake's readings match or beat the Minnesota state average. It ranks #12 of 85 lakes in Beltrami County on nutrient and algae readings. Multi-year monitoring data shows water quality is declining based on 6 years of records.
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