Breakfast Lake
Bayfield County, Wisconsin11 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Breakfast Lake. Here is what has been measured.
- 19 ft max depth
- Limited data
Breakfast Lake in Bayfield County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 12.5 ft visibility. Phosphorus: 10.7 µg/L. Maximum depth: 19 ft. Surface area: 11 acres.
Wisconsin DNR lists Panfish as common on Breakfast Lake. DNR survey details →
Breakfast Lake is a 11-acre lake in Bayfield County, Wisconsin with a maximum depth of 19 feet. Overall water quality is improving over recent sampling years. The lake supports 2 documented fish species including Panfish and Largemouth Bass.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-07-02. Methodology: how these readings are compared.
Breakfast Lake covers about 11 acres in Bayfield County. Vrbo is where to look for cabins and lake homes around Breakfast Lake, and Booking.com and Expedia search hotels near the lake for your dates.
What Breakfast Lake is good for
From access and monitoring records, not editorial picks.
- Clear water12.5 ft of visibility
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Breakfast 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 Breakfast Lake
These are the measurements Wisconsin DNR publishes for Breakfast Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 12.5 ft. Phosphorus 10.7 µg/L. TSI 40.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 12.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 10.7µg/L | Measured, not scored 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. | 40 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Breakfast Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Breakfast Lake typically sits around 59°F at the surface in October. Summer average is about 74°F. Usually warmest in Aug (about 76°F) and coldest in Apr (about 58°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (58°F) to its warmest (76°F).
Typical surface water temperature by month, from 62 field readings (2024–2026) via the EPA Water Quality Portal. See the full Breakfast Lake water temperature breakdown →
Wisconsin DNR lists Panfish as common on Breakfast Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Breakfast Lake’s water-quality measurements separately, and the water-quality trend over 7 years of monitoring is improving. 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. Monitored by volunteers since 2007. 1 station on file (most recent sample 2025).
Fish Species (DNR-rated)
Lake Details
Max depth
19 ft
Surface area
11 acres
Stays via Stay22
Stays near Breakfast Lake
Compare lakeside cabins, hotels, and vacation rentals near Breakfast Lake in Bayfield 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 Breakfast Lake
Prices for Oct 9–11, 4 adults. Change dates on the map below.
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Fish Species
Click a species to see every lake where it is documented.
Fishing Breakfast 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: Improving
Based on 7 years of monitoring (2020–2026).
Water clarity
Improving7 years
Nearby Lakes in Bayfield County
Frequently asked questions about Breakfast Lake
Where is Breakfast Lake?
- Breakfast Lake is a lake in Bayfield County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Breakfast Lake?
- Breakfast Lake in Bayfield County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 12.5 ft visibility. Phosphorus: 10.7 µg/L. Maximum depth: 19 ft. Surface area: 11 acres.
Is Breakfast Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Breakfast Lake?
- Breakfast Lake typically sits around 59°F at the surface in October, from 62 EPA Water Quality Portal field readings (2024–2026). That is a typical value for the month, not a live reading.
How deep is Breakfast Lake?
- Breakfast Lake has a maximum depth of 19 feet. The lake covers 11 acres.
What fish are in Breakfast Lake?
- Fish species found in Breakfast Lake include Panfish, Largemouth Bass. Breakfast Lake is located in Bayfield County, Wisconsin.
What did the DNR fisheries survey find at Breakfast Lake?
- Wisconsin DNR lists Panfish as common on Breakfast Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Breakfast Lake’s water-quality measurements separately, and the water-quality trend over 7 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
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Where this data comes from
76 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_WQX76 samples · 2020–2026
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
Fish and recreation data from Wisconsin DNR Lakes