Fox Lake

On the LakeGrade rubric, Fox Lake pulls an A: clarity at 19.7 ft and phosphorus readings still being added put it in the top bracket for Wisconsin. 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.

A TSI value of 34 puts Fox Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. A maximum depth of 23 ft puts Fox Lake in the middle of Wisconsin's depth distribution. At 44 acres, Fox Lake sits below the Wisconsin median: a small water where shoreline activity has an outsized effect on water quality. Among the 34 graded lakes in Iron County, Fox Lake ranks 6 — in the top quartile locally.

Fox Lake has no invasive species recorded in Wisconsin state databases as of 2024, though prevention practices still apply at all access points. The fishery is bass-led, with 3 documented species across the lake's records. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.