How Clean Is Frances Lake?
Frances Lake is nutrient-rich, with elevated phosphorus and algae. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 6 ft. Phosphorus: 23 µg/L. Chlorophyll-a (algae): 20.6 µg/L. Trophic State Index: 54.
Cleanliness Snapshot
| Metric | Frances Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 6 ft | — |
| Phosphorus | 23 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 20.6 µg/L | <10 = clean |
| Trophic State Index | 54 | <50 = clean |
How does Frances Lake compare?
Frances Lake's readings run above the Minnesota state average. It ranks #4 of 13 lakes in Le Sueur County by water quality score. Multi-year monitoring data shows water quality is improving based on 6 years of records.
Watch Frances Lake water quality
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