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F

Unnamed Lake

Chippewa County, WisconsinLimited DataEutrophic

Unnamed Lake grades an F: every scored parameter (clarity) rates poorly, placing it among the most stressed lakes monitored in Wisconsin.

A TSI in the eutrophic range signals a lake doing what nutrient-loaded waters do — supporting an active algal community at the cost of clear water. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake's surface area is not consistently recorded across state datasets — physical context remains partial. Within the 15 graded lakes of Chippewa County, Unnamed Lake sits at rank 15, near the bottom of the county list.

No invasive species are currently listed at Unnamed Lake — the lake remains off the Wisconsin infested-waters roster. The state fisheries records do not list documented species for Unnamed Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. 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.

Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2022-07-12. Grade methodology: LakeGrade methodology.

Reviewed by LakeQuality Editorial Team · Updated

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Swimming Safety

Avoid swimming, very poor water quality, potential algae toxins

Water Quality Grade: F, Very Poor

Very murky, less than 1.9 ft of visibility. Trophic State Index: 68.

MetricValueGrade
Water Clarity (Secchi Depth)1.9 ftF
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)68Eutrophic

High nutrients, frequent algae, reduced clarity

Location

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County Ranking

Ranked #15 of 15 lakes in Chippewa County

Cleaner Lakes Within 30 Miles

Unnamed Lake holds Grade F. 4 nearby lakes hold higher grades.

Nearby Lakes in Chippewa County

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2022-07-12

Monitoring stations: 1