Helmer_nelson Pond Middle

On the LakeGrade rubric Helmer_nelson Pond Middle fails the cutoffs — a TSI of 64 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.

Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. 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, Helmer_nelson Pond Middle sits at rank 117, near the bottom of the county list.

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