Wimer Lake

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

Mesotrophic conditions dominate at Wimer Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. At 58 ft of maximum depth, Wimer Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. Wimer Lake covers 293 acres alongside 3.7 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Wimer Lake ranks 41 of 97 in Otter Tail County — solidly in the upper half of the local distribution.

No invasive species are currently listed at Wimer Lake — the lake remains off the Minnesota infested-waters roster. The fishery includes walleye alongside the lake's other 16 documented species — a notable draw for Minnesota anglers. No formal public access is documented at Wimer 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.