Mesaba Lake

Mesaba Lake comes in at a B on the grading rubric — a respectable showing for a Minnesota lake of its size and depth. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

Mesotrophic conditions dominate at Mesaba Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. At 65 ft of maximum depth, Mesaba Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. The lake's 213 acres and 6.6 miles of shoreline put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Mesaba Lake ranks 56 of 128 in Cook County — solidly in the upper half of the local distribution.

No invasive species are currently listed at Mesaba Lake — the lake remains off the Minnesota infested-waters roster. 4 fish species are on record, with panfish making up the recreational core. No formal public access is documented at Mesaba 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.