Jackfish Lake

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

A TSI near 49 places Jackfish Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. 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. Jackfish Lake ranks 114 of 142 in Lake County — at the lower end of the locally monitored distribution.

No invasive species are currently listed at Jackfish Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Jackfish Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Jackfish Lake — most use is by shoreline residents and their guests. 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.