Tea Lake
Tea Lake in Ashland County, Wisconsin has a water quality grade of B (Good). Phosphorus: 18.8 µg/L. Maximum depth: 48 ft. Surface area: 50 acres.
- Max depth
- 48 ft
- Area
- 50 acres
- Type
- Mesotrophic
- Public access
- Yes
Next lake in Ashland County
Tea Lake is a 50-acre mesotrophic lake in Ashland County, Wisconsin with a maximum depth of 48 feet. Water quality is graded B based on 1 sampling years through 2020. The lake supports 4 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Public access is available with 1 public boat landing. Compared to the 2 other monitored lakes in Ashland County, Tea Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2020-08-24. Grade methodology: LakeGrade methodology.
Watch Tea Lake water quality
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Swimming Safety
Grade onlyLimited data
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)
No clarity data. Phosphorus level: 18.8 µg/L. Trophic State Index: 46.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 18.8 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 46 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Tea Lake
Compare lakeside cabins, hotels, and vacation rentals near Tea Lake in Ashland 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.
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 48 ft |
| Surface Area | 50 acres |
| Public Access | Yes |
Recreation & Access
- Beaver LakePublic
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Tea Lake
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. 1 station on file (most recent sample 2020).
Fish Species (DNR-rated)
County Ranking
Ranked #2 of 3 lakes in Ashland County
Nearby Lakes in Ashland County
Frequently asked questions about Tea Lake
What is the water quality grade for Tea Lake?
- Tea Lake in Ashland County, Wisconsin has a water quality grade of B (Good). Phosphorus: 18.8 µg/L. Maximum depth: 48 ft. Surface area: 50 acres.
Is Tea Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Tea Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
How deep is Tea Lake?
- Tea Lake has a maximum depth of 48 feet. The lake covers 50 acres.
What fish are in Tea Lake?
- Fish species found in Tea Lake include Panfish, Largemouth Bass, Northern Pike, Walleye. Tea Lake is located in Ashland County, Wisconsin.
Are there boat ramps on Tea Lake?
- Tea Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Beaver Lake. Public access is listed as yes.
Explore Tea Lake across LakeGrade
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Species activity outlook by water temperature and season
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Moderate nutrients, good water quality
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Other Grade B Lakes in Wisconsin
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Where this data comes from
4 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX4 samples · 2020
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
Fish and recreation data from Wisconsin DNR Lakes
Named boat-access points from the USGS National Boat Ramps inventory