Bullhead Lake
Bullhead Lake in Langlade County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9 ft visibility.
- Clarity
- 9 ft
- Trend
- ↓ Declining
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Why Bullhead Lake 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 Bullhead Lake, 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.
Bullhead Lake is a lake in Langlade County, Wisconsin. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2021-08-20. Grade methodology: LakeQuality methodology.
Watch Bullhead Lake water quality
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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 Bullhead Lake
These readings exist but are not enough for an A–F grade — see why.
Moderate clarity, visible to about 9 ft. Trophic State Index: 45.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Bullhead Lake
Compare lakeside cabins, hotels, and vacation rentals near Bullhead Lake in Langlade 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 Bullhead Lake
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Fishing Bullhead Lake
Water Quality Trend: ↓ Declining
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | 0 m/yr | 7 |
| Phosphorus | ↓ Declining | +1.79 µg/L/yr | 7 |
EPA Impairment Status
Bullhead Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit WI10007039 · Official waterbody report · Matched by proximity (2.64 km)
Graded lakes near Bullhead Lake
Bullhead Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Langlade County
Frequently asked questions about Bullhead Lake
Where is Bullhead Lake?
- Bullhead Lake is a lake in Langlade 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 Bullhead Lake?
- Bullhead Lake in Langlade County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9 ft visibility.
Is Bullhead Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Bullhead Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
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Where this data comes from
1 measurement from 1 monitoring station, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX1 sample · 2021
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
Impairment status from EPA ATTAINS 303(d) database