Sheas Lake

Sheas Lake pulls a D on the LakeGrade rubric — phosphorus loading and limited clarity hold it below the Wisconsin average. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

A TSI in the eutrophic range signals a lake doing what nutrient-loaded waters do — supporting an active algal community at the cost of clear water. A maximum depth of 24 ft puts Sheas Lake in the middle of Wisconsin's depth distribution. The lake is compact at 32 acres, with partial shoreline records and little volume to buffer nutrient inputs. Within the 5 graded lakes of Kewaunee County, Sheas Lake sits at rank 5, near the bottom of the county list.

Sheas Lake carries an invasive watermilfoil record — boat-launch decontamination and shoreline care matter more here than at uninfested lakes. The fishery is bass-led, with 3 documented species across the lake's records. A documented public access point at Sheas Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. 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.