Crystal Lake

Crystal 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 23 puts Crystal Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. Crystal Lake reaches 36 ft at its deepest point — typical for Wisconsin mid-sized lakes, with seasonal stratification but limited cold-water refuge. Crystal Lake is small — 75 acres alongside partial shoreline records — which makes it sensitive to even modest changes in watershed runoff or recreational pressure. Crystal Lake ranks 7 of 32 in Langlade County, putting it in the upper tier of locally monitored lakes.

No invasive species are currently listed at Crystal Lake — the lake remains off the Wisconsin infested-waters roster. Bass fishing is part of the appeal: the species list runs to 3, anchored by largemouth and/or smallmouth bass. A documented public access point at Crystal 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.