St. Louis River Outlet Upstream of John A. Blatnik Memorial Bridge Lake

On the LakeGrade rubric St. Louis River Outlet Upstream of John A. Blatnik Memorial Bridge Lake fails the cutoffs — a TSI of 62 and persistent algal pressure put it in the bottom tier. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.

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. St. Louis River Outlet Upstream of John A. Blatnik Memorial Bridge Lake ranks 40 of 40 in Douglas County — at the lower end of the locally monitored distribution.

No invasive species are currently listed at St. Louis River Outlet Upstream of John A. Blatnik Memorial Bridge Lake — the lake remains off the Wisconsin infested-waters roster. The state fisheries records do not list documented species for St. Louis River Outlet Upstream of John A. Blatnik Memorial Bridge Lake, 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.