Kesagiagan Lake

Kesagiagan Lake sits at the top of the Minnesota PCA grading rubric with an A, a mark reached by the cleanest lakes in Minnesota. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

A TSI value of 34 puts Kesagiagan Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. 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. Kesagiagan Lake ranks 31 of 86 in Beltrami County — solidly in the upper half of the local distribution.

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