Lake Desair
Lake Desair in Barron County, Wisconsin has a water quality grade of D (Nutrient-rich). Water clarity: 4 ft visibility. Phosphorus: 40.7 µg/L. Maximum depth: 33 ft. Surface area: 81 acres.
- Clarity
- 4 ft
- Typical in August
- 75°F
- Max depth
- 33 ft
- Area
- 81 acres
- Type
- Eutrophic
- Trend
- ↓ Declining
- Public access
- Yes
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Lake Desair →
Next lake in Barron County
Lake Desair is a 81-acre productive, nutrient-rich eutrophic lake in Barron County, Wisconsin with a maximum depth of 33 feet. Water quality is graded D based on 1 sampling years through 2026. 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 27 other monitored lakes in Barron County, Lake Desair ranks #24 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-06-15. 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 4 ft. Phosphorus level: 40.7 µg/L. Trophic State Index: 57.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4 ft | Not graded |
| Phosphorus | 40.7 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 57 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lake Desair
Compare lakeside cabins, hotels, and vacation rentals near Lake Desair in Barron 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 Lake Desair are listed below.
Top-rated places to stay near Lake Desair
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Planning a whole trip? See where to stay at Wisconsin’s top lakes →
Water Temperature
Lake Desair typically sits around 75°F at the surface in August. Summer average is about 75°F. Usually warmest in Jul (about 77°F) and coldest in Mar (about 41°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 20 field readings (2024–2026) via the EPA Water Quality Portal. See the full Lake Desair water temperature breakdown →
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 33 ft |
| Surface Area | 81 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Lake DesairPublic
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Lake Desair
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 1993. 1 station on file (most recent sample 2026).
Fish Species (DNR-rated)
Water Quality Trend: ↓ Declining
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.183 m/yr | 5 |
| Phosphorus | ↓ Declining | +5.2 µg/L/yr | 7 |
EPA Impairment Status
Lake Desair 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 WI10004580 · Official waterbody report
County Ranking
Ranked #24 of 28 lakes in Barron County
Nearby Lakes With Higher Grades
Lake Desair holds Grade D. 3 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 Barron County
Frequently asked questions about Lake Desair
What is the water quality grade for Lake Desair?
- Lake Desair in Barron County, Wisconsin has a water quality grade of D (Nutrient-rich). Water clarity: 4 ft visibility. Phosphorus: 40.7 µg/L. Maximum depth: 33 ft. Surface area: 81 acres.
Is Lake Desair safe to swim in?
- Nutrients and algae run higher than average — check local advisories before swimming, and skip the water if you see scum. Lake Desair has a water quality grade of D (Nutrient-rich). Always check local health department advisories before swimming.
What is the water temperature of Lake Desair?
- Lake Desair typically sits around 75°F at the surface in August, from 20 EPA Water Quality Portal field readings (2024–2026). That is a typical value for the month, not a live reading.
How deep is Lake Desair?
- Lake Desair has a maximum depth of 33 feet. The lake covers 81 acres.
What fish are in Lake Desair?
- Fish species found in Lake Desair include Panfish, Largemouth Bass, Northern Pike. Lake Desair is located in Barron County, Wisconsin.
Are there boat ramps on Lake Desair?
- Lake Desair has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Desair. Public access is listed as yes.
Explore Lake Desair across LakeGrade
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Where this data comes from
77 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_WQX77 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