What is the water clarity of Clear Lake?

Secchi depth (water clarity) data is not available for Clear Lake.

Does Clear Lake have an algae problem?

Chlorophyll-a (algae) data is not available for Clear Lake. Phosphorus and Secchi readings can still indicate bloom risk indirectly.

How Clean Is Clear Lake?

Q: Is Clear Lake polluted?

Clear Lake does not show severe pollution. It has nutrient and algae measurements on record from state and federal monitoring, and nutrient and algae levels are within or below typical regional ranges.

Clear Lake is a clean lake by Wisconsin standards. Its nutrient and algae readings come from EPA monitoring data. Phosphorus: 10.8 µg/L. Trophic State Index: 38.

Cleanliness Snapshot

Metric	Clear Lake	Wisconsin avg
Phosphorus	10.8 µg/L	<30 = clean
Trophic State Index	38	<50 = clean

How does Clear Lake compare?

Clear Lake's readings match or beat the Wisconsin state average. It ranks #4 of 67 lakes in Oneida County by water quality score. Multi-year monitoring data shows water quality is improving based on 2 years of records.

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More on Clear Lake

Is Clear Lake safe for swimming? →What fish are in Clear Lake? →Is Clear Lake polluted? →Full water quality report →Oneida County lakes →Cleanest lakes in Oneida County →Cleanest lakes in Wisconsin →