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Lake Nancy
Enhanced dataInteractive depth contours
Lake NancyWashburn County, WI
Contours load with map Access
Interactive depth contours5-foot typical interval · Modeled depth estimate · Not a survey · Not for navigation
Source: LakeList depth modelmedium confidence · QA passed · Select a contour to inspect its mapped depthModeled depth estimate: contours computed from the lake's shoreline shape and its documented 39-ft maximum depth (depth grows with distance from shore, calibrated to the documented mean depth where available). This is a smooth mathematical model, not a survey - real holes, bars, and drop-offs will differ. Community sonar (C-MAP Genesis) overlays where recorded. Not for navigation.LakeList assistant
Plan your lake day
Fishing spots, food, lodging, marinas, and rentals around Lake Nancy.
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Fishing forecast
Best windows for Lake Nancy
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 Nancy water temperature today
Modeled surface-temperature estimate built from seasonal climate, lake depth, and live National Weather Service air temperatures near this lake.
74°FWarm
Seasonal estimate. Checking current National Weather Service air temperatures…
Comfortable summer pattern. Bass and panfish are active; early and late hours beat the midday heat.
Estimates are modeled, not measured. Actual temperatures vary with depth, wind mixing, and recent weather — verify conditions before swimming, boating, or heading onto ice.
DNR water check
Water quality quick take
From Wisconsin DNR / Citizen Lake Monitoring readings at Lake Nancy - Site B - Deep Hole Se Basin.
Sampled Aug 2025Volunteer monitoring since 2001
Clear, low-algae water — summer clarity of 13.8 ft is clearer than most monitored Wisconsin lakes.
Based on July–August 2025 averages across 4 volunteer readings.39Oligotrophic5-yr summer TSI
Very clear, low-nutrient water — often deep, with limited plant growth.
Water claritySecchi disk depth
13.8 ftJul–Aug 2025 avg (2 readings)
ClearStable since 2017
Clearer than 67% of 596 monitored Wisconsin lakes with current readings.
AlgaeChlorophyll-a
3 µg/LJul–Aug 2025 avg (2 readings)
LowStable since 2018
NutrientsTotal phosphorus — fuels plant & algae growth
20 µg/LLatest single sample · 2023-06-24
LowLow phosphorus means light 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 | 13.8 ft (2) | 3.0 µg/L (2) | — |
| 2024 | — | 2.0 µg/L (2) | — |
| 2023 | 13.0 ft (1) | 5.0 µg/L (1) | — |
| 2022 | 18.0 ft (1) | 5.0 µg/L (1) | 14.0 µg/L (1) |
| 2021 | 15.0 ft (1) | 2.0 µg/L (1) | — |
| 2020 | 14.0 ft (2) | 2.0 µg/L (1) | — |
| 2019 | 18.0 ft (1) | 2.0 µg/L (1) | — |
| 2018 | 14.3 ft (2) | 2.5 µg/L (2) | — |
| 2017 | 14.0 ft (4) | 1.5 µg/L (2) | — |
| 2016 | 12.9 ft (4) | 2.5 µg/L (2) | — |
Latest individual samples: Secchi 11.5 ft (2025-08-17), chlorophyll-a 4 µg/L (2025-08-17), and total phosphorus 20 µg/L (2023-06-24).
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 Nancy - Site B - Deep Hole Se BasinStation 663151 · 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 maps1 converted map sheetView DNR depth mapHistorical map · not for navigationFishing 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 Nancy depth maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Lake Nancy · 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 2691500 · 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.
Wisconsin DNR fisheries survey
Fish population survey
Structured LakeList extraction from the 2012 DNR fisheries survey. Population estimates, density, and catch-rate indices use different units, methods, and scopes, so each value is presented in its original form rather than normalized against a different measure.
Survey indicatorsValues keep their source unit and method; unlike measures are not scaled or compared.
Management contextLake Nancy (WBIC 2691500) only
Human-reviewed catch, CPUE, length and size-structure metrics for exact Lake Nancy.
- Historical survey snapshot; not current regulations or navigation guidance.
- Stocking histories, regulations, creel/angler-use metrics, recommendations, comparison-water values and unsupported chart-only values were excluded.
Black Crappie
3.1 inches2012 min length · p. 712.8 inches2012 max length · p. 76.7 inches2012 mean length · p. 72.4 inches2012 length sd · p. 7
Bluegill
332 fish2012 catch count · p. 74.9 inches2012 mean length · p. 71.7 inches2012 length sd · p. 7221 fish/mile2012 electrofishing cpue · p. 7
Largemouth Bass
10.1 inches2012 mean length · p. 72.8 inches2012 length sd · p. 73.7 inches2012 min length · p. 719.6 inches2012 max length · p. 7
Northern Pike
153 fish2012 catch count · p. 76.9 inches2012 min length · p. 736 inches2012 max length · p. 717.4 inches2012 male mean length · p. 7
Walleye
37 fish2012 adult catch count · p. 718.5 inches2012 min adult length · p. 728.9 inches2012 max adult length · p. 718.7 inches2012 male mean length · p. 7
Nancy Lake fishery survey, 2012Matched by exact wbic name county and lakelist uuid · WBICs 2691500 · verified 2026-07-21Wisconsin DNR fisheries report; LakeList operator documented permission to leverage this public report with source attribution.
757surface acres
39max depth feet
2public access points
46.0860, -91.9938latitude, longitude
Access
Public access points
Boat launchAccess - off Karling Ct46.08731, -91.97710Managed by Wisconsin DNR
DNR verifiedDirections
Boat launchLake Nancy Ramp46.09295, -91.99696Managed by TOWNSHIPTOWN OF MINONGRamp surface: GravelADA-accessible feature: NoVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
PanfishLargemouth BassNorthern PikeWalleyeMuskySmallmouth Bass
Depth FAQ
How deep is Lake Nancy?
Lake Nancy is 39 feet deep at its deepest point and averages about 11 feet, according to Wisconsin DNR records.
Is there a free depth map of Lake Nancy?
Yes. LakeList publishes a free interactive depth contour map of Lake Nancy at a typical 5-foot interval, with an optional 3D underwater view, derived from LakeList depth model survey data.
Where does the Lake Nancy depth map come from?
The interactive depth contours are derived from LakeList depth model. Each contour set passes a visual QA review against the source document before it is published. The depths are a modeled estimate calibrated to the lake's documented maximum depth - not a survey, and not for navigation.
Trust and freshness
Where this lake data comes from
Wisconsin DNR Lake Mapsname, coordinates, county, source identifiers
LakeList record updated 2026-07-14