How Clean Is Zumbro Lake?
Zumbro Lake is nutrient-rich, with elevated phosphorus and algae. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 4 ft. Phosphorus: 69 µg/L. Chlorophyll-a (algae): 24.7 µg/L. Trophic State Index: 61.
Cleanliness Snapshot
| Metric | Zumbro Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 4 ft | — |
| Phosphorus | 69 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 24.7 µg/L | <10 = clean |
| Trophic State Index | 61 | <50 = clean |
How does Zumbro Lake compare?
Zumbro Lake's readings run above the Minnesota state average. It ranks #2 of 2 lakes in Olmsted 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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