Hoffman Lake

On the LakeGrade scale Hoffman Lake grades a B, with clarity at 8.5 ft and 25 µg/L of phosphorus placing it above the Minnesota median. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

A TSI near 48 places Hoffman Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. Hoffman Lake reaches 20 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. At 157 acres, Hoffman Lake fits the Minnesota median for monitored lakes, with 2.3 miles of shoreline. Hoffman Lake ranks 74 of 97 in Otter Tail County — at the lower end of the locally monitored distribution.

No invasive species are currently listed at Hoffman Lake — the lake remains off the Minnesota infested-waters roster. The fishery is bass-led, with 1 documented species across the lake's records. No formal public access is documented at Hoffman Lake — most use is by shoreline residents and their guests. 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.