Granite Lake at

Granite Lake at sits at a C on the grading scale — not impaired, not pristine, with summer measurements that vary year to year. Clarity is the limiting factor — phosphorus is reasonable but suspended particles or algal cells keep water transparency below Wisconsin norms.

At a TSI of 51, Granite Lake at reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. Granite Lake at reaches 34 ft at its deepest point — typical for Wisconsin mid-sized lakes, with seasonal stratification but limited cold-water refuge. At 155 acres, Granite Lake at fits the Wisconsin median for monitored lakes, with partial shoreline records. Granite Lake at sits at rank 19 of 37 in Barron County, in the lower half of the local distribution.

Granite Lake at has at least one documented invasive species (Curly-Leaf Pondweed), so boaters and anglers should observe clean-drain-dry steps when leaving the lake. The fishery includes walleye alongside the lake's other 4 documented species — a notable draw for Wisconsin anglers. 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.