Round Lake

On the LakeGrade rubric, Round Lake pulls an A: clarity at 26.2 ft and phosphorus readings still being added put it in the top bracket for Wisconsin. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.

The lake's low TSI puts it in oligotrophic territory — the cleanest of the four trophic classes, but also the most vulnerable to nutrient-driven shifts. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake is compact at 69 acres, with partial shoreline records and little volume to buffer nutrient inputs. Within Forest County's 35 graded waters, Round Lake sits at rank 2, near the top of the local distribution.

Round Lake has no invasive species recorded in Wisconsin state databases as of 2019, though prevention practices still apply at all access points. 2 fish species are documented at Round Lake, a mixed warm-water community typical for Wisconsin lakes of this size. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.