What is the water clarity of Alexander Lake?

Alexander Lake has a Secchi depth (water clarity) of 4 feet. That is moderate clarity, typical of lakes with some nutrient enrichment.

Does Alexander Lake have an algae problem?

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

How Clean Is Alexander Lake?

Q: Is Alexander Lake polluted?

Alexander Lake shows pollution indicators consistent with nutrient over-enrichment (typically phosphorus from agricultural runoff, fertilizer, or failing septic systems). Its has a water quality grade of D (Nutrient-rich), reflecting elevated nutrient and algae levels.

Alexander Lake is nutrient-rich, with elevated phosphorus and algae. It received a water quality grade of D (Nutrient-rich) based on EPA monitoring data. Water clarity (Secchi depth): 4 ft. Phosphorus: 46.2 µg/L. Trophic State Index: 58.

Cleanliness Snapshot

Metric	Alexander Lake	Wisconsin avg
Overall Grade	D	B
Water Clarity (Secchi)	4 ft	—
Phosphorus	46.2 µg/L	<30 = clean
Trophic State Index	58	<50 = clean

How does Alexander Lake compare?

Alexander Lake's grade of D falls below the Wisconsin state average of B. It ranks #13 of 13 lakes in Lincoln County by water quality score.

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More on Alexander Lake

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