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.

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 39 of 40 in Douglas County — at the lower end of the locally monitored distribution.

St. Louis River Outlet Upstream of John A. Blatnik Memorial Bridge Lake has no invasive species recorded in Wisconsin state databases as of 2024, though prevention practices still apply at all access points. 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. 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.