Montgomery Lake

The LakeGrade rubric puts Montgomery Lake at a C: clarity at 6.8 ft, phosphorus readings still being added, and a TSI of 50 signal an intermediate trophic state.

The lake sits in the mesotrophic zone — the band where most well-managed Wisconsin lakes fall. 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 39 graded lakes of Florence County, Montgomery Lake sits at rank 34, near the bottom of the county list.

Montgomery Lake has no invasive species recorded in Wisconsin state databases as of 2023, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Montgomery 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.