Eddy Lake

Eddy Lake sits at the top of the Minnesota PCA grading rubric with an A, a mark reached by the cleanest lakes in Minnesota.

The lake's low TSI puts it in oligotrophic territory — the cleanest of the four trophic classes, but also the most vulnerable to nutrient-driven shifts. At 95 ft of maximum depth, Eddy Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. The lake's 122 acres and 4.5 miles of shoreline put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Eddy Lake ranks 2 of 142 in Lake County, putting it in the upper tier of locally monitored lakes.

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