Sandhill Lake

On the LakeGrade scale Sandhill Lake grades a B, with clarity at 24.6 ft and 31 µg/L of phosphorus placing it above the Wisconsin median. Of the three parameters, phosphorus is the worst — at 31 µg/L of phosphorus, it keeps the lake susceptible to algal blooms in warm years.

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. At 5 acres, Sandhill Lake sits below the Wisconsin median: a small water where shoreline activity has an outsized effect on water quality. Sandhill Lake ranks 3 of 9 in Ozaukee County — solidly in the upper half of the local distribution.

Sandhill Lake has no invasive species recorded in Wisconsin state databases as of 2025, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Sandhill 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.