Lake Eau Galle
Dunn County, Wisconsin350 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for Lake Eau Galle. Here is what has been measured.
- Eutrophic
- 35 ft max depth
- Public access
- Limited data
Lake Eau Galle in Dunn County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 3 ft visibility. Phosphorus: 68.6 µg/L. Surface area: 350 acres.
Lake Eau Galle is a 350-acre productive, nutrient-rich eutrophic lake in Dunn County, Wisconsin with an estimated average depth of about 35 feet. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 2 public boat landings. Compared to the 2 other monitored lakes in Dunn County, Lake Eau Galle ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-09-13. Methodology: how these readings are compared.
Lake Eau Galle covers about 350 acres in Dunn County. It has 2 public boat landings, so a lakefront rental is not the only way to get a boat on the water. Vrbo is where to look for cabins and lake homes around Lake Eau Galle, and Booking.com and Expedia search hotels near the lake for your dates.
What Lake Eau Galle is good for
From access and monitoring records, not editorial picks.
- Boat launch2 documented ramps
Swimming conditions
Readings onlyLimited data
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 Lake Eau Galle 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 Lake Eau Galle
These are the measurements Wisconsin DNR publishes for Lake Eau Galle, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 3 ft of visibility. Phosphorus 68.6 µg/L. TSI 63.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 68.6µg/L | Poor 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. | 63 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Lake Eau Galle
Answers come straight from the public measurements and survey records on this page.
DNR Reports & Resources
Wisconsin DNR Fisheries scientists publish multi-year survey reports for Lake Eau Galle covering fish populations, stocking, water quality, and management. 1 report on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- 2023Lake Eau Galle spring survey, 2023Fisheries Survey · WI DNR · 2023 (PDF)
Lake Details
Max depth
~35 ft est.
Surface area
350 acres
Public access
Yes
Listed by Wisconsin DNR
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Wisconsin has not published bathymetry for Lake Eau Galle.
Lake Size & Watershed
Watershed (drainage) area
179 sq mi
HydroLAKES / HydroSHEDS
Shoreline
4.1 mi
HydroLAKES / HydroSHEDS
Elevation
748 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Recreation & Access
- Pineview ParkPublic
- 43rd AvenuePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Lake Eau Galle
Compare lakeside cabins, hotels, and vacation rentals near Lake Eau Galle in Dunn 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 readings cover nutrients and algae, not lodging. Cabins and rentals around Lake Eau Galle are listed below.
Top-rated places to stay near Lake Eau Galle
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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Follow Lake Eau Galle’s readings
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Fishing Lake Eau Galle
Water quality readings over time
3 seasons of samples on record (2022–2025). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Worsening3 years
Phosphorus
Worsening+2 µg/L/yr2 years
Reservoir Info (USACE NID)
Lake Eau Galle is a man-made reservoir impounded by the Eau Galle (completed 1913), built primarily for hydroelectric on the Eau Galle; buttress-type dam, 31 ft tall and 171 ft long.
- Surface area
- 350 ac
- Normal storage
- 2,070 ac-ft
- Max storage
- 2,070 ac-ft
- Drainage area
- 173 sq mi
- Hazard class
- Low
- Owner
- Eau Galle Renewable Energy Co.
All listed purposes: Hydroelectric;Recreation.
Source: USACE National Inventory of Dams, NID ID WI00008 · Operator website
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Lake Eau Galle under Clean Water Act (NPDES) discharge permits.
- Eau Galle Cheese Factory IncDurand · 1.1 mi away · NPDES WI0003182
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Nearby Lakes in Dunn County
Frequently asked questions about Lake Eau Galle
Where is Lake Eau Galle?
- Lake Eau Galle is a lake in Dunn County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Lake Eau Galle?
- Lake Eau Galle in Dunn County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 3 ft visibility. Phosphorus: 68.6 µg/L. Surface area: 350 acres.
Is Lake Eau Galle safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Lake Eau Galle?
- No published bathymetric survey covers Lake Eau Galle, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 35 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 350 acres.
Are there boat ramps on Lake Eau Galle?
- Lake Eau Galle has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Pineview Park, 43rd Avenue. Public access is listed as yes.
Can I fish at Lake Eau Galle?
- Lake Eau Galle has 2 documented boat landings 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 Lake Eau Galle 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 Dunn 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
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Other Lakes in Wisconsin
Eutrophic Lakes in Wisconsin
Where this data comes from
18 measurements from 2 monitoring stations, 2022–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX18 samples · 2022–2025
Analytical methods
- Phosphorus by Colorimetry
Monitoring station identifiers (2)
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Named boat-access points from the USGS National Boat Ramps inventory