How Clean Is Clara Lake?
Clara Lake is among the cleanest lakes in Minnesota. Its nutrient and algae readings come from EPA monitoring data. Water clarity (Secchi depth): 7.6 ft. Phosphorus: 15 µg/L. Chlorophyll-a (algae): 4 µg/L. Trophic State Index: 45.
Cleanliness Snapshot
| Metric | Clara Lake | Minnesota avg |
|---|---|---|
| Water Clarity (Secchi) | 7.6 ft | — |
| Phosphorus | 15 µg/L | <30 = clean |
| Chlorophyll-a (Algae) | 4 µg/L | <10 = clean |
| Trophic State Index | 45 | <50 = clean |
How does Clara Lake compare?
Clara Lake's readings match or beat the Minnesota state average. It ranks #27 of 44 lakes in Cook County on nutrient and algae readings. Multi-year monitoring data shows water quality is declining based on 2 years of records.
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