Hasbrook Lake
Hasbrook Lake in Oneida County, Wisconsin has a water quality grade of B (Good). Water clarity: 21 ft visibility. Phosphorus: 10.3 µg/L. Maximum depth: 50 ft. Surface area: 307 acres.
Wisconsin DNR lists Panfish as common on Hasbrook Lake. DNR survey details →
- Clarity
- 21 ft
- Typical in August
- 70°F
- Max depth
- 50 ft
- Area
- 307 acres
- Type
- Oligotrophic
- Trend
- ↑ Improving
- Public access
- Yes
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Hasbrook Lake is a 307-acre cold, clear oligotrophic lake in Oneida 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. Public access is available with 2 public boat landings. Compared to the 66 other monitored lakes in Oneida County, Hasbrook Lake ranks #23 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-08-31. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyLow algae
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.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
Crystal clear, you can see 21 ft down. Phosphorus level: 10.3 µg/L. Trophic State Index: 36.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 21 ft | Not graded |
| Phosphorus | 10.3 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 36 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Hasbrook Lake
Compare lakeside cabins, hotels, and vacation rentals near Hasbrook Lake in Oneida 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 Hasbrook Lake
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Planning a whole trip? See where to stay at Wisconsin’s top lakes →
Water Temperature
Hasbrook Lake typically sits around 70°F at the surface in August. Summer average is about 73°F. Usually warmest in Jul (about 78°F) and coldest in Aug (about 70°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 8 field readings (2025–2025) via the EPA Water Quality Portal. See the full Hasbrook Lake water temperature breakdown →
Wisconsin DNR lists Panfish as common on Hasbrook Lake.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Hasbrook Lake B from EPA Water Quality Portal chemistry, and the water-quality trend over 6 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 1990. 1 station on file (most recent sample 2025).
Fish Species (DNR-rated)
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 50 ft |
| Surface Area | 307 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Wisconsin River - Hwy DPublic
- Hasbrook LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Hasbrook 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 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | -0.029 m/yr | 6 |
| Phosphorus | ↑ Improving | -0.67 µg/L/yr | 5 |
County Ranking
Ranked #23 of 67 lakes in Oneida County
Nearby Lakes in Oneida County
Frequently asked questions about Hasbrook Lake
Where is Hasbrook Lake?
- Hasbrook Lake is a lake in Oneida County, Wisconsin. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Hasbrook Lake?
- Hasbrook Lake in Oneida County, Wisconsin has a water quality grade of B (Good). Water clarity: 21 ft visibility. Phosphorus: 10.3 µg/L. Maximum depth: 50 ft. Surface area: 307 acres.
Is Hasbrook Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Hasbrook Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
What is the water temperature of Hasbrook Lake?
- Hasbrook Lake typically sits around 70°F at the surface in August, from 8 EPA Water Quality Portal field readings (2025–2025). That is a typical value for the month, not a live reading.
How deep is Hasbrook Lake?
- Hasbrook Lake has a maximum depth of 50 feet. The lake covers 307 acres.
What fish are in Hasbrook Lake?
- Fish species found in Hasbrook Lake include Musky, Panfish, Largemouth Bass, Smallmouth Bass, Walleye. Hasbrook Lake is located in Oneida County, Wisconsin.
What did the DNR fisheries survey find at Hasbrook Lake?
- Wisconsin DNR lists Panfish as common on Hasbrook Lake. A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Hasbrook Lake B from EPA Water Quality Portal chemistry, and the water-quality trend over 6 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
Are there boat ramps on Hasbrook Lake?
- Hasbrook Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Wisconsin River - Hwy D, Hasbrook Lake. Public access is listed as yes.
Explore Hasbrook Lake across LakeQuality
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Where this data comes from
127 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX127 samples · 2020–2025
Analytical methods
- Phosphorus by Colorimetry
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
Named boat-access points from the USGS National Boat Ramps inventory