Round Lake
Round Lake in Burnett County, Wisconsin has a water quality grade of D (Nutrient-rich). Water clarity: 5.2 ft visibility. Phosphorus: 41.3 µg/L. Maximum depth: 27 ft. Surface area: 208 acres.
- Clarity
- 5.2 ft
- Typical in August
- 73°F
- Max depth
- 27 ft
- Area
- 208 acres
- Type
- Eutrophic
- Trend
- ↑ Improving
- Public access
- Yes
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Round Lake →
Next lake in Burnett County
Round Lake is a 208-acre productive, nutrient-rich eutrophic lake in Burnett County, Wisconsin with a maximum depth of 27 feet. Water quality is graded D based on 1 sampling years through 2026. Overall water quality is improving over recent sampling years. The lake supports 5 documented fish species including Panfish, Largemouth Bass, and Smallmouth Bass. Public access is available with 1 public boat landing. Compared to the 29 other monitored lakes in Burnett County, Round Lake ranks #27 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-07-12. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyElevated nutrients
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.
Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum
Water Quality Grade: D (Nutrient-rich)
Murky, only visible to about 5.2 ft. Phosphorus level: 41.3 µg/L. Trophic State Index: 56.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.2 ft | Not graded |
| Phosphorus | 41.3 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 56 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Round Lake
Compare lakeside cabins, hotels, and vacation rentals near Round Lake in Burnett 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. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Round Lake are listed below.
Top-rated places to stay near Round Lake
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 →
Water Temperature
Round Lake typically sits around 73°F at the surface in August. Summer average is about 75°F. Usually warmest in Jul (about 78°F) and coldest in Mar (about 38°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 25 field readings (2024–2026) via the EPA Water Quality Portal. See the full Round Lake water temperature breakdown →
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 27 ft |
| Surface Area | 208 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Round LakePublic
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Round 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.
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 1986. 9 stations on file (most recent sample 2026).
Fish Species (DNR-rated)
Water Quality Trend: ↑ Improving
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.392 m/yr | 6 |
| Phosphorus | → Stable | +0.23 µg/L/yr | 7 |
EPA Impairment Status
Round Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5R).
Causes of impairment
Source: EPA ATTAINS assessment unit WI10005130 · Official waterbody report
County Ranking
Ranked #27 of 30 lakes in Burnett County
Nearby Lakes With Higher Grades
Round Lake holds Grade D. 2 nearby lakes hold higher nutrient-and-algae grades — useful for a swim day, not a reason to skip lodging here.
See full comparison →Nearby Lakes in Burnett County
Frequently asked questions about Round Lake
What is the water quality grade for Round Lake?
- Round Lake in Burnett County, Wisconsin has a water quality grade of D (Nutrient-rich). Water clarity: 5.2 ft visibility. Phosphorus: 41.3 µg/L. Maximum depth: 27 ft. Surface area: 208 acres.
Is Round Lake safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Round Lake has a water quality grade of D (Nutrient-rich). Always check local health department advisories before swimming.
What is the water temperature of Round Lake?
- Round Lake typically sits around 73°F at the surface in August, from 25 EPA Water Quality Portal field readings (2024–2026). That is a typical value for the month, not a live reading.
How deep is Round Lake?
- Round Lake has a maximum depth of 27 feet. The lake covers 208 acres.
What fish are in Round Lake?
- Fish species found in Round Lake include Panfish, Largemouth Bass, Smallmouth Bass, Northern Pike, Walleye. Round Lake is located in Burnett County, Wisconsin.
Are there boat ramps on Round Lake?
- Round Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Round Lake. Public access is listed as yes.
Explore Round Lake across LakeGrade
Depth, room, public access, and the state wake-sport rules
Fish species and top-graded lakes across Wisconsin
Fish species and best lakes in Burnett County
Species activity outlook by water temperature and season
Where to stay at Wisconsin's top lakes, each with its grade
Lakes in the St. Croix Watershed, ranked by water quality
High nutrients, frequent algae, reduced clarity
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More Wisconsin Lake Rankings
State Parks Near Round Lake
Other Grade D Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Where this data comes from
94 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_WQX94 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
Impairment status from EPA ATTAINS 303(d) database
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