Dune Lake

On the LakeGrade rubric Dune Lake fails the cutoffs — a TSI of 81 and persistent algal pressure put it in the bottom tier.

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. Dune Lake ranks 92 of 92 in Beltrami County — at the lower end of the locally monitored distribution.

No invasive species are currently listed at Dune Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Dune 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.