Wisini Lake

On the LakeGrade scale Wisini Lake grades a B, with clarity at 10.0 ft and phosphorus readings still being added placing it above the Minnesota median. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

Mesotrophic conditions dominate at Wisini Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. At 68 ft of maximum depth, Wisini Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. Wisini Lake is small — 43 acres alongside 1.4 miles of shoreline — which makes it sensitive to even modest changes in watershed runoff or recreational pressure. Among the 142 graded lakes in Lake County, Wisini Lake sits at rank 46, above the county median.

No invasive species are currently listed at Wisini Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Wisini Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Wisini 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.