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LakeQuality
B

Laurel Lake

Oneida County, WisconsinMesotrophic

Laurel Lake comes in at a B on the grading rubric — a respectable showing for a Wisconsin lake of its size and depth. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

Mesotrophic conditions dominate at Laurel Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. 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 140 graded lakes of Oneida County, Laurel Lake sits at rank 116, near the bottom of the county list.

Laurel Lake has no invasive species recorded in Wisconsin state databases as of 2023, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Laurel 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 2023-09-22. Grade methodology: LakeGrade methodology.

Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Good clarity, visible to about 12.3 ft. Phosphorus level: 25.1 µg/L. Trophic State Index: 46.

MetricValueGrade
Water Clarity (Secchi Depth)12.3 ftB
Phosphorus25.1 µg/LB
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)46Mesotrophic

Moderate nutrients, good water quality

Water Quality Trend: Improving

Based on 5 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+0.275 m/yr5
Phosphorus Improving-5.13 µg/L/yr4
See year-by-year chart →

Location

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County Ranking

Ranked #116 of 140 lakes in Oneida County

Cleaner Lakes Within 30 Miles

Laurel Lake holds Grade B. 5 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Oneida County

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2023-09-22

Monitoring stations: 2