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Sugar Camp Lake

Oneida County, WisconsinOligotrophic

On the LakeGrade rubric, Sugar Camp Lake pulls an A: clarity at 16.5 ft and 10 µg/L of phosphorus put it in the top bracket for Wisconsin. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

Trophically, Sugar Camp Lake reads as oligotrophic — nutrient-poor, clear, and ecologically more sensitive to disturbance than richer lakes. 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. Sugar Camp Lake ranks 1 of 134 in Oneida County, putting it in the upper tier of locally monitored lakes.

No invasive species are currently listed at Sugar Camp Lake — the lake remains off the Wisconsin infested-waters roster. The state fisheries records do not list documented species for Sugar Camp Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.

Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-07-03. Grade methodology: LakeGrade methodology.

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Swimming Safety

Excellent for swimming, crystal clear water with minimal algae

Water Quality Grade: A, Excellent

Crystal clear, you can see 16.5 ft down. Phosphorus level: 10.3 µg/L. Trophic State Index: 37.

MetricValueGrade
Water Clarity (Secchi Depth)16.5 ftA
Phosphorus10.3 µg/LA
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)37Oligotrophic

Low nutrients, clear water, excellent for swimming

Water Quality Trend: Declining

Based on 6 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Declining-0.371 m/yr6
Phosphorus Stable-0.23 µg/L/yr6
See year-by-year chart →

Recreation & Access

3
Boat Landings
Yes
Public Access

Location

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County Ranking

Ranked #1 of 134 lakes in Oneida County

Nearby Lakes in Oneida County

EPA Impairment Status

Sugar Camp Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

Mercury

Source: EPA ATTAINS assessment unit WI10007452 · Official waterbody report

Data Sources

Water quality data from the EPA Water Quality Portal

Impairment status from EPA ATTAINS 303(d) database

Grading methodology based on Metropolitan Council standards

Public boat-access points from the USGS National Boat Ramps inventory

Most recent sample: 2025-07-03

Monitoring stations: 2

Where to stay near Sugar Camp Lake

Compare lakeside cabins, hotels, and vacation rentals near Sugar Camp Lake in Oneida County, Wisconsin — live availability and prices for your trip.

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