Prinel Lake

On the LakeGrade rubric, Prinel Lake pulls an A: clarity at 32.8 ft and phosphorus readings still being added put it in the top bracket for Wisconsin. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

The lake's low TSI puts it in oligotrophic territory — the cleanest of the four trophic classes, but also the most vulnerable to nutrient-driven shifts. 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. Among the 70 graded lakes in Burnett County, Prinel Lake sits at rank 35, above the county median.

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