Bealeau Lake

Bealeau Lake earns an A — water clarity, phosphorus, and chlorophyll-a all rate among the best monitored waters in Shawano County. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

A TSI value of 34 puts Bealeau Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. Bealeau Lake reaches 24 ft at its deepest point — typical for Wisconsin mid-sized lakes, with seasonal stratification but limited cold-water refuge. At 27 acres, Bealeau Lake sits below the Wisconsin median: a small water where shoreline activity has an outsized effect on water quality. Bealeau Lake sits at rank 14 of 27 in Shawano County, in the lower half of the local distribution.

Bealeau Lake carries an invasive watermilfoil record — boat-launch decontamination and shoreline care matter more here than at uninfested lakes. Walleye are documented at Bealeau Lake, one of 4 fish species on record for the lake. A documented public access point at Bealeau Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.