Flambeau Lake Deep
Vilas County, Wisconsin1,166 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Flambeau Lake Deep. Here is what has been measured.
- Purple Loosestrife
- 78 ft max depth
- Public access
- Limited data
Flambeau Lake Deep in Vilas County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 13 ft visibility. Maximum depth: 78 ft. Surface area: 1166 acres.
Wisconsin DNR lists Musky as common on Flambeau Lake Deep. DNR survey details →
Flambeau Lake Deep is a 1,166-acre lake in Vilas County, Wisconsin with a maximum depth of 78 feet. The lake supports 6 documented fish species including Musky, Panfish, and Largemouth Bass. Public access is available.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2023-09-14. Methodology: how these readings are compared.
What Flambeau Lake Deep is good for
From access and monitoring records, not editorial picks.
- Clear water13 ft of visibility
- Fishing6 species recorded
- Deep water78 ft surveyed max depth
- Big water1,166 acres
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Flambeau Lake Deep 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 Flambeau Lake Deep
These are the measurements Wisconsin DNR publishes for Flambeau Lake Deep, 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 13 ft. TSI 40.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 13ft | 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. | 40 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Flambeau Lake Deep
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Flambeau Lake Deep typically sits around 57°F at the surface in September. Summer average is about 58°F. Usually warmest in Jun (about 58°F) and coldest in Sep (about 57°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (57°F) to its warmest (58°F).
Typical surface water temperature by month, from 58 field readings (2024–2024) via the EPA Water Quality Portal. See the full Flambeau Lake Deep water temperature breakdown →
Wisconsin DNR lists Musky as common on Flambeau Lake Deep.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Flambeau Lake Deep’s water-quality measurements separately. 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. 2 stations on file (most recent sample 2020).
Fish Species (DNR-rated)
Lake Details
Max depth
78 ft
Surface area
1,166 acres
Public access
Yes
Listed by Wisconsin DNR
Stays via Stay22
Stays near Flambeau Lake Deep
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Fish Species
Click a species to see every lake where it is documented.
Fishing Flambeau Lake Deep
- → Flambeau Lake Deep fishing: DNR survey catch rates, species & stocking
- → Flambeau Lake Deep fishing forecast & best times (species outlook + 14-day solunar calendar)
- → Flambeau Lake Deep fishing regulations (limits, seasons, special rules)
- → Is it safe to eat fish from Flambeau Lake Deep? (mercury & PFAS guide)
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Nearby Lakes in Vilas County
Frequently asked questions about Flambeau Lake Deep
Where is Flambeau Lake Deep?
- Flambeau Lake Deep 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 Flambeau Lake Deep?
- Flambeau Lake Deep in Vilas County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 13 ft visibility. Maximum depth: 78 ft. Surface area: 1166 acres.
Is Flambeau Lake Deep 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 Flambeau Lake Deep?
- Flambeau Lake Deep typically sits around 57°F at the surface in September, from 58 EPA Water Quality Portal field readings (2024–2024). That is a typical value for the month, not a live reading.
How deep is Flambeau Lake Deep?
- Flambeau Lake Deep has a maximum depth of 78 feet. The lake covers 1166 acres.
What fish are in Flambeau Lake Deep?
- Fish species found in Flambeau Lake Deep include Musky, Panfish, Largemouth Bass, Smallmouth Bass, Northern Pike, Walleye. Flambeau Lake Deep is located in Vilas County, Wisconsin.
What did the DNR fisheries survey find at Flambeau Lake Deep?
- Wisconsin DNR lists Musky as common on Flambeau Lake Deep. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Flambeau Lake Deep’s water-quality measurements separately. Catch rate is not a swim clearance and is not a weekly bite report.
Can I fish at Flambeau Lake Deep?
- Public access to Flambeau Lake Deep 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 Flambeau Lake Deep across LakeQuality
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Where this data comes from
326 measurements from 1 monitoring station, 2020–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Lac Du Flambeau Band of Lake Superior Chippewa Indians Water Program (Tribal)
LDFWATER2007326 samples · 2020–2023
Analytical methods
- Turbidity by Nephelometry
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