Tomahawk Riverlake Nokomis

On the scoring rubric Tomahawk Riverlake Nokomis grades a D: clarity at 4.0 ft and phosphorus readings still being added keep it in the lower bracket for Oneida County. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

At a TSI of 57, Tomahawk Riverlake Nokomis reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. A maximum depth of 33 ft puts Tomahawk Riverlake Nokomis in the middle of Wisconsin's depth distribution. At 2,274 acres, Tomahawk Riverlake Nokomis is one of the larger lakes in Oneida County, with partial shoreline records supporting multiple distinct use patterns. Tomahawk Riverlake Nokomis ranks 118 of 134 in Oneida County — at the lower end of the locally monitored distribution.

Eurasian watermilfoil is established at Tomahawk Riverlake Nokomis, which can dampen recreational access and pressure the native plant community. Walleye are documented at Tomahawk Riverlake Nokomis, one of 6 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.