Big Hills Lake

On the LakeGrade rubric, Big Hills Lake pulls an A: clarity at 26.7 ft and 17 µg/L of phosphorus put it in the top bracket for Wisconsin. 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.

Trophically, Big Hills Lake reads as oligotrophic — nutrient-poor, clear, and ecologically more sensitive to disturbance than richer lakes. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake's surface area is not consistently recorded across state datasets — physical context remains partial. Within the 30 graded lakes of Waushara County, Big Hills Lake sits at rank 24, near the bottom of the county list.

No invasive species are currently listed at Big Hills Lake — the lake remains off the Wisconsin infested-waters roster. The state fisheries records do not list documented species for Big Hills Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.