Round Lake
Chippewa County, Wisconsin216 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Round Lake. Here is what has been measured.
- Mesotrophic
- Impaired · Mercury
- 18 ft max depth
- Public access
Round Lake in Chippewa County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 8.4 ft visibility. Phosphorus: 18.1 µg/L. Maximum depth: 18 ft. Surface area: 216 acres.
Wisconsin DNR lists Musky as common on Round Lake. DNR survey details →
Round Lake is a 216-acre mesotrophic lake in Chippewa County, Wisconsin with a maximum depth of 18 feet. 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. Compared to the 6 other monitored lakes in Chippewa County, Round Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-04-21. Methodology: how these readings are compared.
What Round Lake is good for
From access and monitoring records, not editorial picks.
- Fishing5 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. Round Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
Whether Round 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 Round Lake
These are the measurements Wisconsin DNR publishes for Round 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 8.4 ft. Phosphorus 18.1 µg/L. TSI 46.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 8.4ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 18.1µg/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 Round Lake
Answers come straight from the public measurements and survey records on this page.
Wisconsin DNR lists Musky as common on Round Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Round Lake’s water-quality measurements separately, 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. 4 stations on file (most recent sample 2025).
Fish Species (DNR-rated)
Lake Details
Max depth
18 ft
Surface area
216 acres
Public access
Yes
Listed by Wisconsin DNR
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Fish Species
Click a species to see every lake where it is documented.
Fishing Round Lake
Water Quality Trend: Improving
Based on 6 years of monitoring (2020–2025).
Water clarity
Improving5 years
Phosphorus
Improving-1.02 µg/L/yr6 years
EPA Impairment Status
Round Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Fish consumption.
Source: EPA ATTAINS assessment unit WI10008932 · Official waterbody report
Nearby Lakes in Chippewa County
Frequently asked questions about Round Lake
Where is Round Lake?
- Round Lake is a lake in Chippewa County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Round Lake?
- Round Lake in Chippewa County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 8.4 ft visibility. Phosphorus: 18.1 µg/L. Maximum depth: 18 ft. Surface area: 216 acres.
Is Round Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Round Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
How deep is Round Lake?
- Round Lake has a maximum depth of 18 feet. The lake covers 216 acres.
What fish are in Round Lake?
- Fish species found in Round Lake include Musky, Panfish, Largemouth Bass, Northern Pike, Walleye. Round Lake is located in Chippewa County, Wisconsin.
What did the DNR fisheries survey find at Round Lake?
- Wisconsin DNR lists Musky as common on Round Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows Round Lake’s water-quality measurements separately, 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.
Can I fish at Round Lake?
- Public access to Round Lake is listed as yes on the lake record. 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 Round Lake across LakeQuality
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Where this data comes from
44 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_WQX44 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
Impairment status from EPA ATTAINS 303(d) database
Fish and recreation data from Wisconsin DNR Lakes