De Neveu Lake
Fond du Lac County, Wisconsin80 acresView mapDirections
Wisconsin DNR publishes the water-quality measurements for De Neveu Lake. Here is what has been measured.
- Mesotrophic
- Impaired · Nutrients (phosphorus, nitrogen)
- 2 aquatic invasives
- 67 ft max depth
De Neveu Lake in Fond du Lac County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 11 ft visibility. Phosphorus: 18.1 µg/L. Maximum depth: 67 ft. Surface area: 80 acres.
Wisconsin DNR rates Panfish as abundant on De Neveu Lake. DNR survey details →
De Neveu Lake is a 80-acre mesotrophic lake in Fond du Lac County, Wisconsin with a maximum depth of 67 feet. Overall water quality is declining over recent sampling years. The lake supports 4 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Compared to the 8 other monitored lakes in Fond du Lac County, De Neveu Lake ranks #6 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-09-04. Methodology: how these readings are compared.
De Neveu Lake covers about 80 acres in Fond du Lac County. Vrbo is where to look for cabins and lake homes around De Neveu Lake, and Booking.com and Expedia search hotels near the lake for your dates.
What De Neveu Lake is good for
From access and monitoring records, not editorial picks.
- Clear water11 ft of visibility
- Fishing4 species recorded
- Deep water67 ft surveyed max depth
Swimming conditions
Readings onlyRecreation use not supported
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. De Neveu Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether De Neveu 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 De Neveu Lake
These are the measurements Wisconsin DNR publishes for De Neveu Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 11 ft. Phosphorus 18.1 µg/L. TSI 44.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 11ft | 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. | 44 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about De Neveu Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
De Neveu Lake typically sits around 70°F at the surface in September. Summer average is about 76°F. Usually warmest in Jul (about 78°F) and coldest in May (about 63°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (63°F) to its warmest (78°F).
Typical surface water temperature by month, from 17 field readings (2024–2025) via the EPA Water Quality Portal. See the full De Neveu Lake water temperature breakdown →
Wisconsin DNR rates Panfish as abundant on De Neveu Lake.
A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows De Neveu Lake’s water-quality measurements separately, and the water-quality trend over 5 years of monitoring is declining. 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. Monitored by volunteers since 2008. 1 station on file (most recent sample 2025).
Fish Species (DNR-rated)
Lake Details
Max depth
67 ft
Surface area
80 acres
Lake Size & Watershed
Watershed (drainage) area
0 sq mi
HydroLAKES / HydroSHEDS
Shoreline
1.8 mi
HydroLAKES / HydroSHEDS
Elevation
860 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Stays via Stay22
Stays near De Neveu Lake
Compare lakeside cabins, hotels, and vacation rentals near De Neveu Lake in Fond du Lac 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.
Top-rated places to stay near De Neveu Lake
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Fish Species
Click a species to see every lake where it is documented.
Fishing De Neveu 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.
Water Quality Trend: Worsening
Based on 5 years of monitoring (2021–2025).
Water clarity
Worsening5 years
Phosphorus
Stable+0.01 µg/L/yr5 years
EPA Impairment Status
De Neveu 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: Aquatic life, Recreation.
Source: EPA ATTAINS assessment unit WI10000952 · Official waterbody report
Regulated Pollution Sources Nearby
7 EPA-permitted facilities operate within about 5 miles of De Neveu Lake under Clean Water Act (NPDES) discharge permits. 2 facilities have a reported Clean Water Act violation in the past three years.
- Eden Wastewater Treatment FaciEden · 3.1 mi away · NPDES WI0030716Recent violation
- Theresa Wastewater Treatment FacilityTheresa · 3.8 mi away · NPDES WI0022322Recent violation
- Vir Clar Farms LlcEmpire, Town Of · 0.5 mi away · NPDES WI0062651
- Murph Ko Farms IncEden, Town Of · 3.2 mi away · NPDES WI0062740
- Lakeside Foods Inc EdenEden · 4.1 mi away · NPDES WI0000485
- Milk Specialties Global, Fond Du LacFond Du Lac · 4.4 mi away · NPDES WI0000132
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 Fond du Lac County
Frequently asked questions about De Neveu Lake
Where is De Neveu Lake?
- De Neveu Lake is a lake in Fond du Lac County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of De Neveu Lake?
- De Neveu Lake in Fond du Lac County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Water clarity: 11 ft visibility. Phosphorus: 18.1 µg/L. Maximum depth: 67 ft. Surface area: 80 acres.
Is De Neveu Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. De Neveu Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
What is the water temperature of De Neveu Lake?
- De Neveu Lake typically sits around 70°F at the surface in September, from 17 EPA Water Quality Portal field readings (2024–2025). That is a typical value for the month, not a live reading.
How deep is De Neveu Lake?
- De Neveu Lake has a maximum depth of 67 feet. The lake covers 80 acres.
What fish are in De Neveu Lake?
- Fish species found in De Neveu Lake include Panfish, Largemouth Bass, Northern Pike, Walleye. De Neveu Lake is located in Fond du Lac County, Wisconsin.
What did the DNR fisheries survey find at De Neveu Lake?
- Wisconsin DNR rates Panfish as abundant on De Neveu Lake. A DNR fisheries survey reports fish abundance and catch rates, not water quality. LakeQuality shows De Neveu Lake’s water-quality measurements separately, and the water-quality trend over 5 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
Explore De Neveu Lake across LakeQuality
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Where this data comes from
35 measurements from 1 monitoring station, 2021–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX35 samples · 2021–2025
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Fish and recreation data from Wisconsin DNR Lakes