Fawn Lake

On the LakeGrade rubric, Fawn Lake pulls an A: clarity at 31.2 ft and 20 µg/L of phosphorus put it in the top bracket for Wisconsin. 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 Fawn Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake's surface area is not consistently recorded across state datasets — physical context remains partial. Within Adams County's 20 graded lakes, Fawn Lake ranks 12 — below the local median, though not at the bottom.

No invasive species are currently listed at Fawn Lake — the lake remains off the Wisconsin infested-waters roster. The state fisheries records do not list documented species for Fawn Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.