Rose Lake

Rose Lake comes in at a B on the grading rubric — a respectable showing for a Minnesota lake of its size and depth. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.

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. Rose Lake is unusually deep for Minnesota at 130 ft, which buffers the lake against summer warming and helps the deep water stay oxygenated. Rose Lake covers 477 acres alongside 7.6 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Among the 128 graded lakes in Cook County, Rose Lake sits at rank 48, above the county median.

Rose Lake has no invasive species recorded in Minnesota state databases as of 2024, though prevention practices still apply at all access points. Bass fishing is part of the appeal: the species list runs to 5, anchored by largemouth and/or smallmouth bass. No formal public access is documented at Rose 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.