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Lake Winneconne
Enhanced dataInteractive depth contours
Lake WinneconneWinnebago County, WI
Contours load with map Access
Interactive depth contours5-foot typical interval · Sonar-derived depth (C-MAP Genesis) · Gaps interpolated · Not for navigation
Source: C-MAP Genesis community sonar (derived)high confidence · QA passed · Select a contour to inspect its mapped depthDepths decoded from C-MAP Genesis Social Map community sonar recordings (used with permission), covering 43% of the lake. Small gaps between recordings are smoothly connected; larger unrecorded areas follow the lake's depth model calibrated to the DNR-documented 9-ft maximum depth. More accurate than a pure model, but still an estimate. Not for navigation.LakeList assistant
Plan your lake day
Fishing spots, food, lodging, marinas, and rentals around Lake Winneconne.
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Fishing forecast
Best windows for Lake Winneconne
Weather-based planning built from the National Weather Service hourly forecast near this lake.
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Checking wind, precipitation, and near-term weather windows.
Water temperature
Lake Winneconne water temperature today
Modeled surface-temperature estimate built from seasonal climate, lake depth, and live National Weather Service air temperatures near this lake.
78°FPeak summer
Seasonal estimate. Checking current National Weather Service air temperatures…
Warmest water of the year. Fish hold deeper or feed in low light; swimming and watersports are at their best.
Estimates are modeled, not measured. Actual temperatures vary with depth, wind mixing, and recent weather — verify conditions before swimming, boating, or heading onto ice.
Wisconsin DNR water assessment
Impaired waterbody listed
The DNR lists this waterbody as impaired. This notice is not itself a closure; review the official assessment and current guidance before your trip.
303(d) / impairment recordRecreation restrictions noted
Degraded Habitat, Excess Algal Growth, Degraded Aquatic Vegetation, EutrophicationPollutants: Mercury, Total Phosphorus, Sediment/Total Suspended Solids, PCBs, Unknown Pollutant
- Status
- TMDL Approved, 303d Listed, Pollutant Removed
- Public health
- General Advice
- Recreation
- Recreational Restrictions
- Aquatic life
- Not specified
Water is impaired due to one or more pollutants and associated quality impacts.
Review DNR water quality Check consumption advice Source updated 2026-03-25 · LakeList verified 2026-07-12
DNR water check
Water quality quick take
From Wisconsin DNR / Citizen Lake Monitoring readings at Lake Winneconne - Central (Wi-2).
Sampled May 2026Volunteer monitoring since 2000
Murky, algae-prone water — summer clarity of 2.2 ft ranks among the lowest of monitored Wisconsin lakes.
Based on July–August volunteer averages from 2024–2025; each value shows its own year.58Eutrophic5-yr summer TSI
Nutrient-rich, greener water — more algae and plant growth, common in shallower lakes.
Water claritySecchi disk depth
2.2 ftJul–Aug 2025 avg (4 readings)
MurkyStable since 2011
Clearer than 14% of 596 monitored Wisconsin lakes with current readings.
AlgaeChlorophyll-a
33 µg/LJul–Aug 2024 avg (2 readings)
HighImproving — down ~16% vs earlier years
NutrientsTotal phosphorus — fuels plant & algae growth
76.5 µg/LJul–Aug 2025 avg (2 readings)
HighStable since 2009
High phosphorus points to heavy plant/algae growth pressure.
All readings by year · station details · methodology
Summer averages (July/August)
July/August means; counts in parentheses show how many samples went into each average.
| Year | Secchi | Chlorophyll-a | Total phosphorus |
|---|---|---|---|
| 2025 | 2.2 ft (4) | 62.0 µg/L (1) | 76.5 µg/L (2) |
| 2024 | 3.3 ft (4) | 33.0 µg/L (2) | 79.0 µg/L (2) |
| 2023 | 2.3 ft (2) | 12.0 µg/L (1) | 81.5 µg/L (2) |
| 2022 | 2.4 ft (4) | 47.5 µg/L (2) | 62.5 µg/L (2) |
| 2021 | 2.3 ft (2) | 22.0 µg/L (2) | 48.5 µg/L (2) |
| 2020 | 2.2 ft (4) | — | — |
| 2012 | 1.5 ft (1) | — | — |
| 2011 | 1.9 ft (4) | 57.8 µg/L (4) | 104.3 µg/L (4) |
| 2010 | 1.9 ft (3) | 60.7 µg/L (3) | 117.3 µg/L (3) |
| 2009 | 2.7 ft (4) | 13.0 µg/L (4) | 71.8 µg/L (4) |
Latest individual samples: Secchi 4 ft (2026-05-27), chlorophyll-a 14 µg/L (2025-10-16), and total phosphorus 58 µg/L (2025-10-16).
Secchi clarity is how deep a black-and-white disk stays visible from the surface — more feet means clearer water.
Chlorophyll-a is an algae pigment; higher values signal more algae in the water column.
Total phosphorus is a nutrient that feeds algae and aquatic plants. It is not a weed survey — depth, bottom type, water movement, and management change the actual lake experience.
Lake Winneconne - Central (Wi-2)Station 713282 · TSI based on chlorophyll
Modeled from DNR/CLMN monitoring — not a safety or swim-condition report. Verify current conditions locally. LakeList verified 2026-07-12.Official Wisconsin information
Plan with DNR sources
LakeList links to the authoritative record so you can verify maps, rules, and current notices before leaving.
Historical DNR depth maps3 converted map sheetsFishing regulationsVerify current seasons, limits, and restrictionsOfficial DNR lake pageFacts, advisories, boating, and water qualityWater quality reportsMonitoring stations, clarity, and DNR reportsInvasive speciesVerified, observed, and historical AIS recordsBoating ordinancesLocal slow-no-wake and water-use restrictionsFish consumption advisoriesStatewide and waterbody-specific health guidance
Historical depth maps are not for navigation. Verify regulations and access at the official source before your trip.
Historical Wisconsin DNR maps
Lake Winneconne depth maps
3 converted map sheets. These historical surveys are not for navigation.
Navigable depth map
Lake Winneconne · sheet 1
Pan, zoom, and inspect the converted Wisconsin DNR historical map image in the browser. Historical survey — not for navigation.
Source: Wisconsin DNR · WBIC 241600 · image navigation only; spatial alignment pending · Historical lake maps are not for navigation.
Source: Wisconsin Department of Natural Resources. Converted for browser access with source URLs, checksums, and retrieval dates retained. Historical lake maps are not for navigation.
4,553surface acres
9max depth feet
2public access points
44.1389, -88.7346latitude, longitude
Access
Public access points
Boat launchLake Winneconne Access44.13414, -88.70361Managed by TOWNSHIPTOWN OF WINNECONNERamp surface: ConcreteADA-accessible feature: NoVerified 2026-07-12
Boat launchLake Winneconne Park Boat Ramp44.11361, -88.70563Managed by VILLAGEVILLAGE OF WINNECONNERamp surface: ConcreteADA-accessible feature: NoVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
CatfishNorthern PikePanfishSturgeonLargemouth BassWalleyeMuskySmallmouth Bass
Wisconsin DNR stocking
Fish stocking history
The latest published year is 2021, when 2,500 fish were recorded across 1 entry.
2021
MuskellungeGreat Lakes Spotted · Large Fingerling
2,50010.1 in average
Depth FAQ
How deep is Lake Winneconne?
Lake Winneconne is 9 feet deep at its deepest point, according to Wisconsin DNR records.
Is there a free depth map of Lake Winneconne?
Yes. LakeList publishes a free interactive depth contour map of Lake Winneconne at a typical 5-foot interval, with an optional 3D underwater view, derived from C-MAP Genesis community sonar (derived) survey data.
Where does the Lake Winneconne depth map come from?
The interactive depth contours are derived from C-MAP Genesis community sonar (derived). Each contour set passes a visual QA review against the source document before it is published. The depths are derived from community sonar recordings (C-MAP Genesis Social Map, used with permission), with gaps between recordings interpolated; not for navigation.
Trust and freshness
Where this lake data comes from
Wisconsin DNR Lake Pagesname, coordinates, county, source identifiers
LakeList record updated 2026-07-12
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