How Clean Is Vermillion Lake?
Vermillion Lake has fair water quality — typical of lakes with moderate nutrient enrichment. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 12.6 ft. Phosphorus: 25 µg/L. Chlorophyll-a (algae): 10 µg/L. Trophic State Index: 48.
Cleanliness Snapshot
| Metric | Vermillion Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 12.6 ft | — |
| Phosphorus | 25 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 10 µg/L | <10 = clean |
| Trophic State Index | 48 | <50 = clean |
How does Vermillion Lake compare?
Vermillion Lake's readings match or beat the Minnesota state average. It ranks #99 of 104 lakes in Cass County on nutrient and algae readings. Multi-year monitoring data shows water quality is improving based on 2 years of records.
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