Mirror Lake

Mirror Lake earns an A — water clarity, phosphorus, and chlorophyll-a all rate among the best monitored waters in Waupaca County. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

Trophically, Mirror Lake reads as oligotrophic — nutrient-poor, clear, and ecologically more sensitive to disturbance than richer lakes. The lake bottoms out at 43 ft — a moderate depth that supports a warm-water fishery without the year-round cold refuge a deeper basin provides. The lake is compact at 14 acres, with partial shoreline records and little volume to buffer nutrient inputs. Mirror Lake sits at rank 14 of 27 in Waupaca County, in the lower half of the local distribution.

Zebra mussel presence at Mirror Lake means the lake's clarity numbers carry an asterisk — filtered water is not the same as nutrient-poor water. The fishery is bass-led, with 4 documented species across the lake's records. A documented public access point at Mirror Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.