Round Lake
Round Lake in Shawano County, Wisconsin has a water quality grade of B (Good). Water clarity: 11 ft visibility. Phosphorus: 14.5 µg/L. Maximum depth: 39 ft. Surface area: 27 acres.
- Clarity
- 11 ft
- Typical in July
- 79°F
- Max depth
- 39 ft
- Area
- 27 acres
- Type
- Mesotrophic
- Trend
- → Stable
- Public access
- Yes
Next lake in Shawano County
Round Lake is a 27-acre mesotrophic lake in Shawano County, Wisconsin with a maximum depth of 39 feet. Water quality is graded B based on 1 sampling years through 2026. Water clarity is declining over recent sampling years. 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 20 other monitored lakes in Shawano County, Round Lake ranks #7 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-22. Grade methodology: LakeGrade 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 11 ft. Phosphorus level: 14.5 µg/L. Trophic State Index: 43.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 11 ft | Not graded |
| Phosphorus | 14.5 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 43 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Round Lake
Compare lakeside cabins, hotels, and vacation rentals near Round Lake in Shawano 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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Water Temperature
Round Lake typically sits around 79°F at the surface in July. Summer average is about 79°F. Usually warmest in Jul (about 79°F) and coldest in Apr (about 53°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 9 field readings (2024–2026) via the EPA Water Quality Portal.
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 39 ft |
| Surface Area | 27 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Grass 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 1987. 1 station on file (most recent sample 2025).
Fish Species (DNR-rated)
Water Quality Trend: → Stable
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.429 m/yr | 6 |
| Phosphorus | ↑ Improving | -0.29 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 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit WI10000097 · Official waterbody report · Matched by proximity (2.81 km)
County Ranking
Ranked #7 of 21 lakes in Shawano County
Nearby Lakes in Shawano County
Frequently asked questions about Round Lake
What is the water quality grade for Round Lake?
- Round Lake in Shawano County, Wisconsin has a water quality grade of B (Good). Water clarity: 11 ft visibility. Phosphorus: 14.5 µg/L. Maximum depth: 39 ft. Surface area: 27 acres.
Is Round Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Round Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
What is the water temperature of Round Lake?
- Round Lake typically sits around 79°F at the surface in July, from 9 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 39 feet. The lake covers 27 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 Shawano 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 Grass Lake. Public access is listed as yes.
Explore Round Lake across LakeGrade
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Where this data comes from
57 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_WQX57 samples · 2020–2026
Analytical methods
- Phosphorus by Colorimetry
- Total Phosphorus After Block Digestion
- 2130 B ~ Nephelometric Method
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