Little Pine Lake

Little Pine Lake comes in at a B on the grading rubric — a respectable showing for a Wisconsin lake of its size and depth. The lake's weakest score is on Secchi depth — the water looks more turbid than its phosphorus number alone would predict.

A TSI near 45 places Little Pine Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. Little Pine Lake reaches 32 ft at its deepest point — typical for Wisconsin mid-sized lakes, with seasonal stratification but limited cold-water refuge. Little Pine Lake is small — 18 acres alongside partial shoreline records — which makes it sensitive to even modest changes in watershed runoff or recreational pressure. Little Pine Lake ranks 8 of 33 in Iron County, putting it in the upper tier of locally monitored lakes.

Little Pine Lake has no invasive species recorded in Wisconsin state databases as of 2022, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Little Pine 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.