Cunard Lake

Cunard Lake earns an A — water clarity, phosphorus, and chlorophyll-a all rate among the best monitored waters in Oneida County. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

The lake's low TSI puts it in oligotrophic territory — the cleanest of the four trophic classes, but also the most vulnerable to nutrient-driven shifts. Cunard Lake reaches 23 ft at its deepest point — typical for Wisconsin mid-sized lakes, with seasonal stratification but limited cold-water refuge. The lake is compact at 44 acres, with partial shoreline records and little volume to buffer nutrient inputs. Within Oneida County's 140 graded lakes, Cunard Lake ranks 83 — below the local median, though not at the bottom.

An invasive species record — Chinese Mystery Snail — has been logged at Cunard Lake; Wisconsin DNR maintains the official infested-waters list. Walleye are documented at Cunard 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. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.