Fiske Lake

Fiske Lake comes in at a B on the grading rubric — a respectable showing for a Minnesota lake of its size and depth.

A TSI near 40 places Fiske Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. A maximum depth of 26 ft puts Fiske Lake in the middle of Minnesota's depth distribution. Fiske Lake covers 254 acres alongside 5.3 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Within Otter Tail County's 97 graded lakes, Fiske Lake ranks 61 — below the local median, though not at the bottom.

No invasive species are currently listed at Fiske Lake — the lake remains off the Minnesota infested-waters roster. Walleye are documented at Fiske Lake, one of 11 fish species on record for the lake. Public access is available — the lake is on the Minnesota PCA public-access list. The lake has a partial ice record — 6 observed ice-outs, centered near Apr 6. 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.