Gibson Lake

Gibson Lake sits at a C on the grading scale — not impaired, not pristine, with summer measurements that vary year to year. 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 46 places Gibson Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. Gibson Lake reaches 24 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. The lake is compact at 33 acres, with 1.2 miles of shoreline and little volume to buffer nutrient inputs. Within Lake County's 142 graded lakes, Gibson Lake ranks 91 — below the local median, though not at the bottom.

No invasive species are currently listed at Gibson Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Gibson Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Gibson Lake — most use is by shoreline residents and their guests. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.