Swede Lake Deep

On the LakeGrade rubric Swede Lake Deep fails the cutoffs — a TSI of — and persistent algal pressure put it in the bottom tier. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

There is not yet enough seasonal data to settle the lake's trophic classification — the TSI window remains too narrow to call. 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. Within the 128 graded lakes of Cook County, Swede Lake Deep sits at rank 112, near the bottom of the county list.

No invasive species are currently listed at Swede Lake Deep — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Swede Lake Deep, which usually reflects a lack of formal fisheries survey work rather than an empty lake. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.