Yankee Lake
Marinette County, Wisconsin14 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Yankee Lake. Here is what has been measured.
- Eutrophic
- 20 ft max depth
- Public access
- Limited data
Yankee Lake in Marinette County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 3 ft visibility. Phosphorus: 26.5 µg/L. Maximum depth: 20 ft. Surface area: 14 acres.
Wisconsin DNR lists Panfish as present on Yankee Lake. DNR survey details →
Yankee Lake is a 14-acre productive, nutrient-rich eutrophic lake in Marinette County, Wisconsin with a maximum depth of 20 feet. Water clarity is improving over recent sampling years. The lake supports 2 documented fish species including Panfish and Largemouth Bass. Public access is available. Compared to the 9 other monitored lakes in Marinette County, Yankee Lake ranks #10 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2024-07-29. Methodology: how these readings are compared.
Yankee Lake covers about 14 acres in Marinette County. If you are planning to stay, you can search lake houses and cabins around Yankee Lake on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
Swimming conditions
Readings onlyLimited data
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Yankee 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 Yankee Lake
These are the measurements Wisconsin DNR publishes for Yankee Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 3 ft of visibility. Phosphorus 26.5 µg/L. TSI 56.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 26.5µg/L | Fair GoodFairPoor |
| 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. | 56 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Yankee Lake
Answers come straight from the public measurements and survey records on this page.
Wisconsin DNR lists Panfish as present on Yankee Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Yankee Lake’s water-quality measurements separately, and the water-quality trend over 6 years of monitoring is stable. Catch rate is not a swim clearance and is not a weekly bite report.
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2024).
Fish Species (DNR-rated)
Lake Details
Max depth
20 ft
Surface area
14 acres
Public access
Yes
Listed by Wisconsin DNR
Stays via Stay22
Stays near Yankee Lake
Compare lakeside cabins, hotels, and vacation rentals near Yankee Lake in Marinette County, Wisconsin — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Yankee Lake
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Fish Species
Click a species to see every lake where it is documented.
Fishing Yankee Lake
Water Quality Trend: Stable
Based on 6 years of monitoring (2021–2026).
Water clarity
Improving6 years
Phosphorus
Worsening+2.09 µg/L/yr3 years
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Yankee Lake under Clean Water Act (NPDES) discharge permits.
- Jfrp Enter Llc D/B/A Tall Oaks General StoreStephenson · 0.2 mi away · NPDES WI0057142
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Nearby Lakes in Marinette County
Frequently asked questions about Yankee Lake
Where is Yankee Lake?
- Yankee Lake is a lake in Marinette County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Yankee Lake?
- Yankee Lake in Marinette County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 3 ft visibility. Phosphorus: 26.5 µg/L. Maximum depth: 20 ft. Surface area: 14 acres.
Is Yankee Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Yankee Lake?
- Yankee Lake has a maximum depth of 20 feet. The lake covers 14 acres.
What fish are in Yankee Lake?
- Fish species found in Yankee Lake include Panfish, Largemouth Bass. Yankee Lake is located in Marinette County, Wisconsin.
What did the DNR fisheries survey find at Yankee Lake?
- Wisconsin DNR lists Panfish as present on Yankee Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Yankee Lake’s water-quality measurements separately, and the water-quality trend over 6 years of monitoring is stable. Catch rate is not a swim clearance and is not a weekly bite report.
Can I fish at Yankee Lake?
- Public access to Yankee Lake is listed as yes on the lake record. Seasons, size and bag limits, and whether you need a license are set by Wisconsin's fish and wildlife agency, so check its current regulations before you go.
Explore Yankee Lake across LakeQuality
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Where this data comes from
17 measurements from 1 monitoring station, 2021–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX17 samples · 2021–2024
Analytical methods
- Phosphorus by Colorimetry
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Fish and recreation data from Wisconsin DNR Lakes