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D

Amik Lake

Vilas County, WisconsinEutrophic

On the scoring rubric Amik Lake grades a D: clarity at 2.8 ft and 39 µg/L of phosphorus keep it in the lower bracket for Vilas County. Clarity is the limiting factor — phosphorus is reasonable but suspended particles or algal cells keep water transparency below Wisconsin norms.

Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. At only 8 ft deep, Amik Lake is shallow — wind keeps the water column mixed and sediment resuspension drives phosphorus levels harder to manage. At 141 acres, Amik Lake fits the Wisconsin median for monitored lakes, with partial shoreline records. Within the 191 graded lakes of Vilas County, Amik Lake sits at rank 177, near the bottom of the county list.

Amik Lake has at least one documented invasive species (Chinese Mystery Snail), so boaters and anglers should observe clean-drain-dry steps when leaving the lake. The fishery includes walleye alongside the lake's other 6 documented species — a notable draw for Wisconsin anglers. 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 2026-04-29. 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

Very murky, less than 2.8 ft of visibility. Phosphorus level: 38.9 µg/L. Trophic State Index: 60.

MetricValueGrade
Water Clarity (Secchi Depth)2.8 ftF
Phosphorus38.9 µg/LC
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)60Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

CharacteristicValue
Maximum Depth8 ft
Surface Area141 acres

Fish Species

Click a species to see every graded lake where it is documented.

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

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

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

Invasive & Introduced Species

Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.

Chinese Mystery SnailRusty Crayfish

Water Quality Trend: Stable

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

MetricTrendChange/YearYears
Water Clarity Declining-0.065 m/yr5
Phosphorus Improving-1.07 µg/L/yr6
See year-by-year chart →

Location

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County Ranking

Ranked #177 of 191 lakes in Vilas County

Cleaner Lakes Within 30 Miles

Amik Lake holds Grade D. 5 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Vilas County

WI DNR Lake Profile

Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 1996. 1 station on file (most recent sample 2025).

DNR Assessment
Good · Shallow Lowland lake
Trophic State Index 61 (eutrophic) · 5-year average

Fish Species (DNR-rated)

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

EPA Impairment Status

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

Causes of impairment

Nutrients (phosphorus, nitrogen)

Source: EPA ATTAINS assessment unit WI10003623 · 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

Fish and recreation data from Wisconsin DNR Lakes

Most recent sample: 2026-04-29

Monitoring stations: 1

Where to stay near Amik Lake

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

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