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LakeQuality
A

White Lake

Oconto County, WisconsinLimited DataOligotrophic

White Lake earns an A — water clarity, phosphorus, and chlorophyll-a all rate among the best monitored waters in Oconto County. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

A TSI value of 21 puts White Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. 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. White Lake ranks 15 of 66 in Oconto County, putting it in the upper tier of locally monitored lakes.

White Lake has no invasive species recorded in Wisconsin state databases as of 2020, though prevention practices still apply at all access points. The state fisheries records do not list documented species for White 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 2020-09-21. Grade methodology: LakeGrade methodology.

Swimming Safety

Excellent for swimming, crystal clear water with minimal algae

Water Quality Grade: A, Excellent

Crystal clear, you can see 50.9 ft down. Trophic State Index: 21.

MetricValueGrade
Water Clarity (Secchi Depth)50.9 ftA
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)21Oligotrophic

Low nutrients, clear water, excellent for swimming

Water Quality Trend: Stable

Based on 7 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Declining-0.857 m/yr7
Phosphorus Improving-0.32 µg/L/yr6
See year-by-year chart →

Location

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County Ranking

Ranked #15 of 66 lakes in Oconto County

Nearby Lakes in Oconto County

DNR Reports & Resources

Wisconsin DNR Fisheries scientists publish multi-year survey reports for White Lake covering fish populations, stocking, water quality, and management. 1 report on file.

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2020-09-21

Monitoring stations: 2