Skip to main content
LakeQuality
A

Sugarbush Lake

Vilas County, WisconsinOligotrophic

Sugarbush Lake earns an A — water clarity, phosphorus, and chlorophyll-a all rate among the best monitored waters in Vilas County. 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.

Trophically, Sugarbush Lake reads as oligotrophic — nutrient-poor, clear, and ecologically more sensitive to disturbance than richer lakes. A maximum depth of 29 ft puts Sugarbush Lake in the middle of Wisconsin's depth distribution. The lake's 141 acres and partial shoreline records put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Sugarbush Lake ranks 45 of 202 in Vilas County, putting it in the upper tier of locally monitored lakes.

Sugarbush Lake has at least one documented invasive species (Rusty Crayfish), so boaters and anglers should observe clean-drain-dry steps when leaving the lake. Walleye are documented at Sugarbush Lake, one of 6 fish species on record for the 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 2023-09-04. 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 51.7 ft down. Phosphorus level: 11 µg/L. Trophic State Index: 30.

MetricValueGrade
Water Clarity (Secchi Depth)51.7 ftA
Phosphorus11 µg/LA
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)30Oligotrophic

Low nutrients, clear water, excellent for swimming

Lake Details

CharacteristicValue
Maximum Depth29 ft
Surface Area141 acres

Fish Species

Click a species to see all Wisconsin and Minnesota lakes where it is found.

→ Best fishing times for Sugarbush Lake (14-day solunar calendar)

→ Is it safe to eat fish from Sugarbush Lake? (mercury & PFAS guide)

Sugarbush Lake fishing regulations (limits, seasons, special rules)

Invasive Species

Rusty Crayfish

Water Quality Trend: Declining

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

MetricTrendChange/YearYears
Water Clarity Stable+0.294 m/yr5
Phosphorus Declining+0.38 µg/L/yr3
See year-by-year chart →

Location

Loading map…

County Ranking

Ranked #45 of 202 lakes in Vilas County

Nearby Lakes in Vilas County

WI DNR Lake Profile

Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2023).

Fish Species (DNR-rated)

Musky(Common)Walleye(Common)Panfish(Present)Largemouth Bass(Present)Smallmouth Bass(Present)Northern Pike(Present)

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Fish and recreation data from Wisconsin DNR Lakes

Most recent sample: 2023-09-04

Monitoring stations: 1