Fawn Lake

Fawn Lake sits at a C on the grading scale — not impaired, not pristine, with summer measurements that vary year to year. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

Mesotrophic conditions dominate at Fawn Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. Fawn Lake is a shallow lake at 10 ft maximum depth, which means it warms quickly, mixes constantly, and amplifies nutrient inputs. The lake is compact at 19 acres, with partial shoreline records and little volume to buffer nutrient inputs. Fawn Lake sits at rank 142 of 191 in Vilas County, in the lower half of the local distribution.

No invasive species are currently listed at Fawn Lake — the lake remains off the Wisconsin infested-waters roster. Walleye are documented at Fawn Lake, one of 5 fish species on record for the lake. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.