Lake Julia

Lake Julia sits at the top of the Wisconsin DNR grading rubric with an A, a mark reached by the cleanest lakes in Wisconsin. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

A TSI value of 35 puts Lake Julia in the oligotrophic range, where biological productivity stays low and the water column remains clear. A maximum depth of 19 ft puts Lake Julia in the middle of Wisconsin's depth distribution. Lake Julia covers 241 acres alongside partial shoreline records — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Among the 140 graded lakes in Oneida County, Lake Julia sits at rank 51, above the county median.

Lake Julia has at least one documented invasive species (Chinese Mystery Snail), so boaters and anglers should observe clean-drain-dry steps when leaving the lake. The fishery includes walleye alongside the lake's other 6 documented species — a notable draw for Wisconsin anglers. 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.