Flambeau Lake Deep
Flambeau Lake Deep in Vilas County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. 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 →
- Clarity
- 13 ft
- Typical in July
- 58°F
- Max depth
- 78 ft
- Area
- 1,166 acres
- Public access
- Yes
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Why Flambeau Lake Deep has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Flambeau Lake Deep, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity, but not phosphorus and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by WI DNR and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
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. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Flambeau Lake Deep
These readings exist but are not enough for an A–F grade — see why.
Good clarity, visible to about 13 ft. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 13 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 40 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Flambeau Lake Deep
Compare lakeside cabins, hotels, and vacation rentals near Flambeau Lake Deep in Vilas 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 Flambeau Lake Deep
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Planning a whole trip? See where to stay at Wisconsin’s top lakes →
Water Temperature
Flambeau Lake Deep typically sits around 58°F at the surface in July. 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.
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 a water-quality grade. LakeQuality does not assign an A–F grade on Flambeau Lake Deep — official chemistry is on file, not a letter. 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
| Characteristic | Value |
|---|---|
| Maximum Depth | 78 ft |
| Surface Area | 1,166 acres |
| Public Access | Yes |
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Flambeau Lake Deep
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
Graded lakes near Flambeau Lake Deep
Flambeau Lake Deep has no grade, but these lakes within a short drive do.
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. LakeQuality has not rated this lake (UNRATED) — there is not enough recent sampling to assign a letter.
What is the water quality grade for Flambeau Lake Deep?
- Flambeau Lake Deep in Vilas County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 13 ft visibility. Maximum depth: 78 ft. Surface area: 1166 acres.
Is Flambeau Lake Deep safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Flambeau Lake Deep is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
What is the water temperature of Flambeau Lake Deep?
- Flambeau Lake Deep typically sits around 58°F at the surface in July, 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 a water-quality grade. LakeQuality does not assign an A–F grade on Flambeau Lake Deep — official chemistry is on file, not a letter. Catch rate is not a swim clearance and is not a weekly bite report.
Explore Flambeau Lake Deep across LakeQuality
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Species activity outlook by water temperature and season
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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)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)
Fish and recreation data from Wisconsin DNR Lakes