Berry Lake
Oconto County, Wisconsin209 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Berry Lake. Here is what has been measured.
- Mesotrophic
- 27 ft max depth
- Public access
Berry Lake in Oconto County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 7.5 ft visibility. Phosphorus: 15.4 µg/L. Maximum depth: 27 ft. Surface area: 209 acres.
Wisconsin DNR lists Largemouth Bass as common on Berry Lake. DNR survey details →
Berry Lake is a 209-acre mesotrophic lake in Oconto County, Wisconsin with a maximum depth of 27 feet. Overall water quality is declining over recent sampling years. The lake supports 3 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Public access is available with 1 public boat landing. Compared to the 38 other monitored lakes in Oconto County, Berry Lake ranks #6 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-23. Methodology: how these readings are compared.
Berry Lake covers about 210 acres in Oconto County. It has one public boat landing. For a place on the water, look through cabin and lake-house rentals near Berry Lake on Vrbo. For a hotel or motel room, Booking.com and Expedia both search around the lake.
What Berry Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Fishing3 species recorded
Swimming conditions
Readings onlyLow algae
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Berry Lake is safe to swim in today is a call for the Wisconsin Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Berry Lake
These are the measurements Wisconsin DNR publishes for Berry Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 7.5 ft. Phosphorus 15.4 µg/L. TSI 46.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 7.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 15.4µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 46 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Berry Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Berry Lake typically sits around 76°F at the surface in August. Summer average is about 74°F. Usually warmest in Jul (about 77°F) and coldest in Jun (about 69°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (69°F) to its warmest (77°F).
Typical surface water temperature by month, from 14 field readings (2024–2026) via the EPA Water Quality Portal. See the full Berry Lake water temperature breakdown →
Wisconsin DNR lists Largemouth Bass as common on Berry Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Berry Lake’s water-quality measurements separately, and the water-quality trend over 7 years of monitoring is declining. 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 1999. 20 stations on file (most recent sample 2025).
Fish Species (DNR-rated)
Lake Details
Max depth
27 ft
Surface area
209 acres
Public access
Yes
Listed by Wisconsin DNR
Lake Size & Watershed
Watershed (drainage) area
3 sq mi
HydroLAKES / HydroSHEDS
Shoreline
2.8 mi
HydroLAKES / HydroSHEDS
Elevation
833 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Berry LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Berry Lake
Compare lakeside cabins, hotels, and vacation rentals near Berry 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 Berry Lake
Prices for Oct 16–18, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Wisconsin’s top lakes →
Follow Berry Lake’s readings
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Fish Species
Click a species to see every lake where it is documented.
Fishing Berry 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: Worsening
Based on 7 years of monitoring (2020–2026).
Water clarity
Worsening7 years
Phosphorus
Stable-0.13 µg/L/yr7 years
Nearby Lakes in Oconto County
Frequently asked questions about Berry Lake
Where is Berry Lake?
- Berry Lake is a lake in Oconto County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Berry Lake?
- Berry Lake in Oconto County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 7.5 ft visibility. Phosphorus: 15.4 µg/L. Maximum depth: 27 ft. Surface area: 209 acres.
Is Berry Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Berry Lake?
- Berry Lake typically sits around 76°F at the surface in August, from 14 EPA Water Quality Portal field readings (2024–2026). That is a typical value for the month, not a live reading.
How deep is Berry Lake?
- Berry Lake has a maximum depth of 27 feet. The lake covers 209 acres.
What fish are in Berry Lake?
- Fish species found in Berry Lake include Panfish, Largemouth Bass, Northern Pike. Berry Lake is located in Oconto County, Wisconsin.
What did the DNR fisheries survey find at Berry Lake?
- Wisconsin DNR lists Largemouth Bass as common on Berry Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Berry Lake’s water-quality measurements separately, and the water-quality trend over 7 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
Are there boat ramps on Berry Lake?
- Berry Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Berry Lake. Public access is listed as yes.
Can I fish at Berry Lake?
- Berry Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Wisconsin's fish and wildlife agency, so check its current regulations before you go.
Explore Berry Lake across LakeQuality
Depth, room, public access, and the state wake-sport rules
Fish species and the cleanest lakes across Wisconsin
Fish species and best lakes in Oconto County
Species activity outlook by water temperature and season
Where to stay at Wisconsin's top lakes, each with its readings
Wisconsin's cleanest lakes, ranked on agency measurements
More lakes in Wisconsin
Other Lakes in Wisconsin
Mesotrophic Lakes in Wisconsin
Where this data comes from
42 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_WQX42 samples · 2020–2026
Analytical methods
- Phosphorus by Colorimetry
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from 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