Duck Lake
Vilas County, Wisconsin106 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Duck Lake. Here is what has been measured.
- Rusty Crayfish
- 20 ft max depth
- Limited data
Duck Lake in Vilas County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 4 ft visibility. Maximum depth: 20 ft. Surface area: 106 acres.
Duck Lake is a 106-acre lake in Vilas County, Wisconsin with a maximum depth of 20 feet. The lake supports 6 documented fish species including Musky, Panfish, and Largemouth Bass.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-01. Methodology: how these readings are compared.
Duck Lake covers about 110 acres in Vilas County. Vrbo is where to look for cabins and lake homes around Duck Lake, and Booking.com and Expedia search hotels near the lake for your dates.
What Duck Lake is good for
From access and monitoring records, not editorial picks.
- Fishing6 species recorded
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Duck Lake is safe to swim in today is a call for the Wisconsin Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Duck Lake
These are the measurements Wisconsin DNR publishes for Duck Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 4 ft. TSI 57.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 4ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 57 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Duck Lake
Answers come straight from the public measurements and survey records on this page.
DNR Reports & Resources
Wisconsin DNR Fisheries scientists publish multi-year survey reports for Duck Lake covering fish populations, stocking, water quality, and management. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- 2025Duck Lake spring summary report, 2025Fisheries Survey · WI DNR · 2025 (PDF)
Lake Details
Max depth
20 ft
Surface area
106 acres
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Stays near Duck Lake
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Fish Species
Click a species to see every lake where it is documented.
Fishing Duck Lake
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Water Quality Trend: Stable
Based on 7 years of monitoring (2020–2026).
Water clarity
Stable7 years
Nearby Lakes in Vilas County
Frequently asked questions about Duck Lake
Where is Duck Lake?
- Duck Lake is a lake in Vilas County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Duck Lake?
- Duck Lake in Vilas County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 4 ft visibility. Maximum depth: 20 ft. Surface area: 106 acres.
Is Duck Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Duck Lake?
- Duck Lake has a maximum depth of 20 feet. The lake covers 106 acres.
What fish are in Duck Lake?
- Fish species found in Duck Lake include Musky, Panfish, Largemouth Bass, Smallmouth Bass, Northern Pike, Walleye. Duck Lake is located in Vilas County, Wisconsin.
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Where this data comes from
61 measurements from 1 monitoring station, 2020–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX61 samples · 2020–2026
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Fish and recreation data from Wisconsin DNR Lakes