Anderson Lake
Anderson Lake in Oconto County, Wisconsin has a water quality grade of B (Good). Water clarity: 10 ft visibility. Phosphorus: 14.3 µg/L. Maximum depth: 40 ft. Surface area: 177 acres.
Wisconsin DNR lists Largemouth Bass as common on Anderson Lake. DNR survey details →
- Clarity
- 10 ft
- Typical in July
- 77°F
- Max depth
- 40 ft
- Area
- 177 acres
- Type
- Mesotrophic
- Trend
- → Stable
- Public access
- Yes
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Anderson Lake is a 177-acre mesotrophic lake in Oconto County, Wisconsin with a maximum depth of 40 feet. Water quality is graded B based on 1 sampling years through 2026. The lake supports 5 documented fish species including Musky, Panfish, and Largemouth Bass. Public access is available with 1 public boat landing. Compared to the 38 other monitored lakes in Oconto County, Anderson Lake ranks #10 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-22. 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)
Good clarity, visible to about 10 ft. Phosphorus level: 14.3 µg/L. Trophic State Index: 43.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 10 ft | Not graded |
| Phosphorus | 14.3 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 43 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Anderson Lake
Compare lakeside cabins, hotels, and vacation rentals near Anderson Lake in Oconto 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 Anderson Lake
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Planning a whole trip? See where to stay at Wisconsin’s top lakes →
Water Temperature
Anderson Lake typically sits around 77°F at the surface in July. Summer average is about 74°F. Usually warmest in Jul (about 77°F) and coldest in May (about 64°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 10 field readings (2024–2025) via the EPA Water Quality Portal. See the full Anderson Lake water temperature breakdown →
Wisconsin DNR lists Largemouth Bass as common on Anderson Lake.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Anderson Lake B from EPA Water Quality Portal chemistry, and the water-quality trend over 7 years of monitoring is stable. 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 2015. 3 stations on file (most recent sample 2025).
Fish Species (DNR-rated)
DNR Reports & Resources
Wisconsin DNR Fisheries scientists publish multi-year survey reports for Anderson Lake covering fish populations, stocking, water quality, and management. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- 2022Anderson Lake comprehensive summary report, 2022Comprehensive Survey · WI DNR · 2022 (PDF)
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 40 ft |
| Surface Area | 177 acres |
| Public Access | Yes |
Recreation & Access
- Anderson 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 Anderson 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: → Stable
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | +0.125 m/yr | 7 |
| Phosphorus | → Stable | -0.21 µg/L/yr | 7 |
County Ranking
Ranked #10 of 39 lakes in Oconto County
Nearby Lakes in Oconto County
Frequently asked questions about Anderson Lake
Where is Anderson Lake?
- Anderson Lake is a lake in Oconto County, Wisconsin. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Anderson Lake?
- Anderson Lake in Oconto County, Wisconsin has a water quality grade of B (Good). Water clarity: 10 ft visibility. Phosphorus: 14.3 µg/L. Maximum depth: 40 ft. Surface area: 177 acres.
Is Anderson Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Anderson Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
What is the water temperature of Anderson Lake?
- Anderson Lake typically sits around 77°F at the surface in July, from 10 EPA Water Quality Portal field readings (2024–2025). That is a typical value for the month, not a live reading.
How deep is Anderson Lake?
- Anderson Lake has a maximum depth of 40 feet. The lake covers 177 acres.
What fish are in Anderson Lake?
- Fish species found in Anderson Lake include Musky, Panfish, Largemouth Bass, Northern Pike, Walleye. Anderson Lake is located in Oconto County, Wisconsin.
What did the DNR fisheries survey find at Anderson Lake?
- Wisconsin DNR lists Largemouth Bass as common on Anderson Lake. A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Anderson Lake B from EPA Water Quality Portal chemistry, and the water-quality trend over 7 years of monitoring is stable. Catch rate is not a swim clearance and is not a weekly bite report.
Are there boat ramps on Anderson Lake?
- Anderson Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Anderson Lake. Public access is listed as yes.
Explore Anderson Lake across LakeQuality
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Moderate nutrients, good water quality
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Where this data comes from
43 measurements from 1 monitoring station, 2020–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX43 samples · 2020–2026
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