Pequaywan Lake

Pequaywan Lake earns a C — middle-of-the-pack water quality, with one or two parameters dragging the average down from a stronger grade.

A TSI near 46 places Pequaywan Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. The lake bottoms out at 33 ft — a moderate depth that supports a warm-water fishery without the year-round cold refuge a deeper basin provides. At 425 acres, Pequaywan Lake fits the Minnesota median for monitored lakes, with 6.5 miles of shoreline. Pequaywan Lake sits at rank 114 of 187 in St. Louis County, in the lower half of the local distribution.

No invasive species are currently listed at Pequaywan Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Pequaywan Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Pequaywan 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.