Jacks Lake

Jacks Lake sits at a C on the grading scale — not impaired, not pristine, with summer measurements that vary year to year. 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.

Mesotrophic conditions dominate at Jacks Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. The lake's 55 ft maximum depth is in the upper tier for Wisconsin — deep enough for cold-water fish to find refuge in summer. The lake is compact at 19 acres, with partial shoreline records and little volume to buffer nutrient inputs. Jacks Lake sits at rank 9 of 15 in Chippewa County, in the lower half of the local distribution.

Jacks Lake has no invasive species recorded in Wisconsin state databases as of 2024, 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.