How Clean Is Clear Lake?
Clear Lake is algae-prone, with a higher bloom risk in warm months. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 2.5 ft. Phosphorus: 151 µg/L. Chlorophyll-a (algae): 59.3 µg/L. Trophic State Index: 70.
Cleanliness Snapshot
| Metric | Clear Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 2.5 ft | — |
| Phosphorus | 151 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 59.3 µg/L | <10 = clean |
| Trophic State Index | 70 | <50 = clean |
How does Clear Lake compare?
Clear Lake's readings run above the Minnesota state average. It ranks #2 of 2 lakes in Waseca County on nutrient and algae readings. Multi-year monitoring data shows water quality is declining based on 5 years of records.
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