Bolger Lake

On the LakeGrade rubric, Bolger Lake pulls an A: clarity at 54.1 ft and phosphorus readings still being added put it in the top bracket for Wisconsin. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

Trophically, Bolger Lake reads as oligotrophic — nutrient-poor, clear, and ecologically more sensitive to disturbance than richer lakes. A maximum depth of 45 ft puts Bolger Lake in the middle of Wisconsin's depth distribution. At 115 acres, Bolger Lake fits the Wisconsin median for monitored lakes, with partial shoreline records. Bolger Lake ranks 42 of 140 in Oneida County — solidly in the upper half of the local distribution.

An invasive species record — Chinese Mystery Snail — has been logged at Bolger Lake; Wisconsin DNR maintains the official infested-waters list. Walleye are documented at Bolger Lake, one of 5 fish species on record for the lake. Public access is available — the lake is on the Wisconsin DNR public-access list. 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.