Farm Lake

Farm Lake comes in at a B on the grading rubric — a respectable showing for a Minnesota lake of its size and depth. Secchi readings are the weakest of the three parameters, suggesting suspended sediment or algal biomass dominates the optical signal.

A TSI near 48 places Farm Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. At 56 ft of maximum depth, Farm Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. Farm Lake covers 1,292 acres alongside 20.0 miles of shoreline, large enough that conditions can vary meaningfully between bays. Within Lake County's 142 graded lakes, Farm Lake ranks 81 — below the local median, though not at the bottom.

Farm Lake has no invasive species recorded in Minnesota state databases as of 2024, though prevention practices still apply at all access points. Walleye are documented at Farm Lake, one of 12 fish species on record for the lake. A documented public access point at Farm Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. Ice-out has been recorded 18 times at Farm Lake, with a median around Apr 28. 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.