Little Mccall Lake

On the LakeGrade rubric, Little Mccall Lake pulls an A: clarity readings still being added and 14 µg/L of phosphorus 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 near 42 places Little Mccall Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. The lake bottoms out at 21 ft — a moderate depth that supports a warm-water fishery without the year-round cold refuge a deeper basin provides. The lake is compact at 9 acres, with partial shoreline records and little volume to buffer nutrient inputs. Within the 22 graded lakes of Marinette County, Little Mccall Lake sits at rank 21, near the bottom of the county list.

No invasive species are currently listed at Little Mccall Lake — the lake remains off the Wisconsin infested-waters roster. 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.