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Nagawicka Lake
Enhanced dataInteractive depth contours
Nagawicka LakeWaukesha County, WI
Contours load with map Access
Interactive depth contours10-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 56% of the lake. Small gaps between recordings are smoothly connected; larger unrecorded areas follow the lake's depth model calibrated to the DNR-documented 90-ft maximum depth. More accurate than a pure model, but still an estimate. Not for navigation.LakeList assistant
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Fishing spots, food, lodging, marinas, and rentals around Nagawicka Lake.
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Fishing forecast
Best windows for Nagawicka Lake
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
Nagawicka Lake 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 Nagawicka Lake - Deep Hole.
Last sampled Sep 2025
Through 2025, clear, low-algae water — summer clarity of 15.4 ft puts it among the clearest quarter of monitored Wisconsin lakes.
Based on July–August volunteer averages from 2021–2023; each value shows its own year.46Mesotrophic5-yr summer TSI
Moderately clear with moderate nutrients — a typical profile for good swimming lakes.
Water claritySecchi disk depth
15.4 ftJul–Aug 2023 avg (2 readings)
ClearImproving — up ~37% vs earlier years
Clearer than 82% of 596 monitored Wisconsin lakes with current readings.
AlgaeChlorophyll-a
5 µg/LJul–Aug 2022 avg (2 readings)
LowWorsening — up ~18% vs earlier years
NutrientsTotal phosphorus — fuels plant & algae growth
13.5 µg/LJul–Aug 2021 avg (2 readings)
Low2016–2021
Low 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 | 11.6 ft (1) | 6.0 µg/L (1) | — |
| 2023 | 15.4 ft (2) | 2.0 µg/L (1) | — |
| 2022 | 8.2 ft (3) | 5.0 µg/L (2) | — |
| 2021 | 11.0 ft (4) | 4.0 µg/L (2) | 13.5 µg/L (2) |
| 2020 | 11.1 ft (4) | 3.0 µg/L (2) | — |
| 2019 | 3.8 ft (2) | 4.0 µg/L (2) | — |
| 2018 | 9.2 ft (4) | 3.0 µg/L (2) | 13.0 µg/L (1) |
| 2017 | 9.8 ft (2) | 3.5 µg/L (2) | — |
| 2016 | 8.9 ft (4) | 2.5 µg/L (2) | 12.0 µg/L (1) |
| 2015 | 9.5 ft (3) | 3.0 µg/L (2) | — |
Latest individual samples: Secchi 14.1 ft (2025-09-11), chlorophyll-a 7 µg/L (2025-09-11), and total phosphorus 13 µg/L (2021-08-12).
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.
Nagawicka Lake - Deep HoleStation 683129 · 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
Nagawicka Lake depth maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Nagawicka Lake · 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 828000 · 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 2010 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 contextNagawicka Lake (WBIC 828000) only
Human-reviewed multi-gear catch, CPUE, population, length, and size-structure metrics for exact Nagawicka Lake.
- Historical survey snapshot; not current regulations or navigation guidance.
- Stocking histories, regulations, recommendations, comparison-water values, and unsupported chart-only values were excluded.
All fish
2.8 hours2010 walleye electrofishing effort · p. 225.8 hours2010 bass electrofishing effort · p. 20.3 hours2010 catch all electrofishing effort · p. 2289 net-nights2010 fyke net effort · p. 4
Black Crappie
186 fish2010 fyke net catch count · p. 160.6 fish/net-night2010 fyke net cpue · p. 1610.2 inches2010 fyke net mean length · p. 162.5 inches2010 fyke net length sd · p. 16
Bluegill
4,975 fish2010 fyke net catch count · p. 1617.2 fish/net-night2010 fyke net cpue · p. 165.9 inches2010 fyke net mean length · p. 161.1 inches2010 fyke net length sd · p. 16
Bowfin
69 fish2010 catch count · p. 180.2 fish/net-night2010 cpue · p. 18
Brown Bullhead
1 fish2010 catch count · p. 180 fish/net-night2010 cpue · p. 18
Common Carp
2 fish2010 catch count · p. 180 fish/net-night2010 cpue · p. 18
Golden Shiner
1 fish2010 catch count · p. 180.4 fish/net-night2010 cpue · p. 18
Lake Chubsucker
7 fish2010 catch count · p. 180 fish/net-night2010 cpue · p. 18
Largemouth Bass
613 fish2010 electrofishing catch count · p. 1423.8 fish/hour2010 electrofishing cpue · p. 1413.5 inches2010 electrofishing mean length · p. 141.9 inches2010 electrofishing length sd · p. 14
Northern Pike
291 fish2010 male catch count · p. 71 fish/hour2010 male cpue · p. 718.8 inches2010 male mean length · p. 73.8 inches2010 male length sd · p. 7
Pumpkinseed
6 fish2010 fyke net catch count · p. 160 fish/net-night2010 fyke net cpue · p. 164.3 inches2010 fyke net mean length · p. 164.3 inches2010 fyke net max length · p. 16
Rock Bass
2,479 fish2010 fyke net catch count · p. 168.6 fish/net-night2010 fyke net cpue · p. 166 inches2010 fyke net mean length · p. 162 inches2010 fyke net length sd · p. 16
Smallmouth Bass
277 fish2010 electrofishing catch count · p. 1110.8 fish/hour2010 electrofishing cpue · p. 1112.8 inches2010 electrofishing mean length · p. 112.8 inches2010 electrofishing length sd · p. 11
Walleye
46 fish2010 male catch count · p. 40.2 fish/hour2010 male cpue · p. 419 inches2010 male mean length · p. 41.1 inches2010 male length sd · p. 4
White Sucker
87 fish2010 catch count · p. 180.3 fish/net-night2010 cpue · p. 18
Yellow Bass
1 fish2010 catch count · p. 180 fish/net-night2010 cpue · p. 18
Yellow Bullhead
53 fish2010 catch count · p. 180.2 fish/net-night2010 cpue · p. 18
Yellow Perch
746 fish2010 fyke net catch count · p. 162.6 fish/net-night2010 fyke net cpue · p. 165.2 inches2010 fyke net mean length · p. 161 inches2010 fyke net length sd · p. 16
Nagawicka Lake comprehensive fishery survey, 2010Matched by exact wbic name county and lakelist uuid · WBICs 828000 · verified 2026-07-21Wisconsin DNR fisheries report; LakeList operator documented permission to leverage this public report with source attribution.
981surface acres
90max depth feet
1public access points
43.0779, -88.3873latitude, longitude
Access
Public access points
Boat launchNagawicka Lake Boat Launch43.06422, -88.37993Managed by COUNTYCITY OF DELAFIELDRamp surface: Concrete PlankADA-accessible feature: YesVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
Largemouth BassNorthern PikePanfishSmallmouth BassWalleye
Depth FAQ
How deep is Nagawicka Lake?
Nagawicka Lake is 90 feet deep at its deepest point and averages about 36 feet, according to Wisconsin DNR records.
Is there a free depth map of Nagawicka Lake?
Yes. LakeList publishes a free interactive depth contour map of Nagawicka Lake at a typical 10-foot interval, with an optional 3D underwater view, derived from C-MAP Genesis community sonar (derived) survey data.
Where does the Nagawicka Lake 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 Mapsname, coordinates, county, source identifiers
LakeList record updated 2026-07-14
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