Boot Lake

Boot 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 Boot Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. At 83 ft of maximum depth, Boot Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. The lake's 197 acres and 4.6 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, Boot Lake sits at rank 8, near the top of the local distribution.

Boot Lake has no invasive species recorded in Minnesota state databases as of 2023, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Boot Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Boot 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.