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LakeQuality

Lake Beulah in Walworth County, Wisconsin has nutrient and algae measurements on record from state and federal monitoring. A water-quality reading is not a swimming clearance. The state water agency and county health departments post current advisories; check them before you swim.. Water clarity: 10 ft visibility. Phosphorus: 13.4 µg/L. Chlorophyll-a (algae): 2.5 µg/L. Always check local health department advisories before swimming.

Key Metrics

MetricValue
Water Clarity (Secchi Depth)10 ft
Phosphorus13.4 μg/L
Chlorophyll-a (Algae)2.5 μg/L
Maximum Depth58 ft
LocationWalworth County, Wisconsin

How does Lake Beulah compare?

On nutrient and algae readings, Lake Beulah matches or beats the Wisconsin state average. It ranks #2 of 19 lakes in Walworth County on nutrient and algae readings.

Water clarity (Secchi depth) sits at 10 feet. That counts as exceptional clarity — sunlight penetrates deep, supporting submerged plants and limiting algae. Algae levels (chlorophyll-a) measure 2.5 µg/L — low and well within safe swimming guidelines.

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