Mb-2a Cul Lake

On the LakeGrade rubric Mb-2a Cul Lake fails the cutoffs — a TSI of 82 and persistent algal pressure put it in the bottom tier. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

Hypereutrophic conditions mean the lake is operating at the upper end of the productivity scale, with all the bloom risk that implies. 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. Mb-2a Cul Lake ranks 52 of 52 in Sawyer County — at the lower end of the locally monitored distribution.

No invasive species are currently listed at Mb-2a Cul Lake — the lake remains off the Wisconsin infested-waters roster. The state fisheries records do not list documented species for Mb-2a Cul Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. 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.