Long Lake

On the LakeGrade scale Long Lake grades a B, with clarity at 10.5 ft and phosphorus readings still being added placing it above the Wisconsin median. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

Mesotrophic conditions dominate at Long Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. At 58 ft of maximum depth, Long Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. At 113 acres, Long Lake fits the Wisconsin median for monitored lakes, with partial shoreline records. Among the 134 graded lakes in Oneida County, Long Lake sits at rank 41, above the county median.

Long Lake has no invasive species recorded in Wisconsin state databases as of 2023, though prevention practices still apply at all access points. Walleye are documented at Long Lake, one of 4 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.