Horseshoe Lake

Horseshoe Lake carries a solid B grade — strong on most parameters, with measurements that hold up well across the summer season. Phosphorus is the parameter holding the grade back — runoff from the surrounding watershed appears to keep nutrient levels elevated through the summer.

The lake sits in the mesotrophic zone — the band where most well-managed Wisconsin lakes fall. At 54 ft of maximum depth, Horseshoe Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. At 21 acres, Horseshoe Lake sits below the Wisconsin median: a small water where shoreline activity has an outsized effect on water quality. Horseshoe Lake sits at rank 10 of 18 in Manitowoc County, in the lower half of the local distribution.

Eurasian watermilfoil is established at Horseshoe Lake, which can dampen recreational access and pressure the native plant community. Bass fishing is part of the appeal: the species list runs to 4, anchored by largemouth and/or smallmouth bass. A documented public access point at Horseshoe 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.