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. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

A TSI value of 37 puts Eddy Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. The lake's 95 ft maximum depth is in the upper tier for Minnesota — deep enough for cold-water fish to find refuge in summer. 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. Within Lake County's 142 graded waters, Eddy Lake sits at rank 2, near the top of the local distribution.

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.