Horseshoe Lake

Horseshoe Lake earns an A — water clarity, phosphorus, and chlorophyll-a all rate among the best monitored waters in Langlade County. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

A TSI value of 38 puts Horseshoe Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. Horseshoe Lake reaches 29 ft at its deepest point — typical for Wisconsin mid-sized lakes, with seasonal stratification but limited cold-water refuge. At 11 acres, Horseshoe Lake sits below the Wisconsin median: a small water where shoreline activity has an outsized effect on water quality. Within Langlade County's 32 graded waters, Horseshoe Lake sits at rank 1, near the top of the local distribution.

Horseshoe Lake has no invasive species recorded in Wisconsin state databases as of 2025, though prevention practices still apply at all access points. The fishery is bass-led, with 2 documented species across the lake's records. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.