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D

Amber Lake

Oneida County, WisconsinLimited DataEutrophic

Amber Lake pulls a D on the LakeGrade rubric — phosphorus loading and limited clarity hold it below the Wisconsin average. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.

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 134 graded lakes of Oneida County, Amber Lake sits at rank 121, near the bottom of the county list.

No invasive species are currently listed at Amber Lake — the lake remains off the Wisconsin infested-waters roster. The state fisheries records do not list documented species for Amber 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 2023-05-07. Grade methodology: LakeGrade methodology.

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Swimming Safety

Swimming not recommended, poor water quality with high algae risk

Water Quality Grade: D, Poor

Murky, only visible to about 3.5 ft. Trophic State Index: 59.

MetricValueGrade
Water Clarity (Secchi Depth)3.5 ftD
PhosphorusNo data
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)59Eutrophic

High nutrients, frequent algae, reduced clarity

Water Quality Trend: Declining

Based on 2 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Declining-0.75 m/yr2

Location

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County Ranking

Ranked #121 of 134 lakes in Oneida County

Cleaner Lakes Within 30 Miles

Amber Lake holds Grade D. 4 nearby lakes hold higher grades.

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: 2023-05-07

Monitoring stations: 1

Where to stay near Amber Lake

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