Haskell Lake
Haskell Lake in Vilas County, Wisconsin has a water quality grade of B (Good). Phosphorus: 21 µg/L. Maximum depth: 50 ft. Surface area: 89 acres.
Wisconsin DNR lists Panfish as common on Haskell Lake. DNR survey details →
- Max depth
- 50 ft
- Area
- 89 acres
- Type
- Mesotrophic
- Trend
- ↑ Improving
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Haskell Lake is a 89-acre mesotrophic lake in Vilas County, Wisconsin with a maximum depth of 50 feet. Water quality is graded B based on 1 sampling years through 2025. Overall water quality is improving over recent sampling years. The lake supports 5 documented fish species including Musky, Panfish, and Largemouth Bass. Compared to the 102 other monitored lakes in Vilas County, Haskell Lake ranks #85 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-07-31. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyBacteria A
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Based on E. coli testing, Haskell Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 7 samples across 6 seasons.
This is a historical summary of past testing, not a current condition — bacteria levels change quickly, especially after rain. Always check Wisconsin’s current beach and health-department advisories before swimming.
Water Quality Grade: B (Good)
No clarity data. Phosphorus level: 21 µg/L. Trophic State Index: 48.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 21 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 48 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Haskell Lake
Compare lakeside cabins, hotels, and vacation rentals near Haskell Lake 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 Haskell Lake
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Wisconsin DNR lists Panfish as common on Haskell Lake.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Haskell Lake B from EPA Water Quality Portal chemistry, and the water-quality trend over 4 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. 10 stations on file (most recent sample 2007).
Fish Species (DNR-rated)
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 50 ft |
| Surface Area | 89 acres |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Haskell Lake
Water Quality Trend: ↑ Improving
Based on 4 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↑ Improving | -11.15 µg/L/yr | 4 |
County Ranking
Ranked #85 of 103 lakes in Vilas County
Nearby Lakes in Vilas County
Frequently asked questions about Haskell Lake
Where is Haskell Lake?
- Haskell Lake is a lake in Vilas County, Wisconsin. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Haskell Lake?
- Haskell Lake in Vilas County, Wisconsin has a water quality grade of B (Good). Phosphorus: 21 µg/L. Maximum depth: 50 ft. Surface area: 89 acres.
Is Haskell Lake safe to swim in?
- Based on E. coli testing, Haskell Lake never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 7 samples across 6 seasons. That works out to a bacteria swim-safety grade of A — a historical summary of past testing, not a current reading. Haskell Lake has a water quality grade of B (Good). Bacteria levels can spike quickly after heavy rain, so always check Wisconsin's current beach and health-department advisories before you swim.
How deep is Haskell Lake?
- Haskell Lake has a maximum depth of 50 feet. The lake covers 89 acres.
What fish are in Haskell Lake?
- Fish species found in Haskell Lake include Musky, Panfish, Largemouth Bass, Northern Pike, Walleye. Haskell Lake is located in Vilas County, Wisconsin.
What did the DNR fisheries survey find at Haskell Lake?
- Wisconsin DNR lists Panfish as common on Haskell Lake. A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Haskell Lake B from EPA Water Quality Portal chemistry, and the water-quality trend over 4 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
Explore Haskell Lake across LakeQuality
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Fish species and best lakes in Vilas County
Species activity outlook by water temperature and season
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Moderate nutrients, good water quality
Wisconsin's cleanest and most-polluted lakes, ranked
More Wisconsin Lake Rankings
Other Grade B Lakes in Wisconsin
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Where this data comes from
9 measurements from 1 monitoring station, 2021–2025. 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)
LDFWATER20079 samples · 2021–2025
Analytical methods
- 4500 P E ~ Phosphorus in Water by Colorimetry- Ascorbic Acid Method
- 4500 P F ~ Phosphorus in Water by Colorimetry Automated Ascorbic Acid Method
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