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Halsey Lake
Enhanced dataInteractive depth contours
Halsey LakeFlorence 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 39% of the lake. Small gaps between recordings are smoothly connected; larger unrecorded areas follow the lake's depth model calibrated to the DNR-documented 10-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 Halsey Lake.
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Fishing forecast
Best windows for Halsey 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
Halsey Lake water temperature today
Modeled surface-temperature estimate built from seasonal climate, lake depth, and live National Weather Service air temperatures near this lake.
77°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.
DNR water check
Water quality quick take
From Wisconsin DNR / Citizen Lake Monitoring readings at Halsey Lake - Deep Hole.
Sampled Jul 2026Volunteer monitoring since 1995
Somewhat hazy water — summer clarity of 5.9 ft is lower than most monitored Wisconsin lakes.
Based on July–August 2025 averages across 6 volunteer readings.Water claritySecchi disk depth
5.9 ftJul–Aug 2025 avg (6 readings)
HazyStable since 2016
Clearer than 34% of 596 monitored Wisconsin lakes with current readings.
No recent algae readings — last measured 2020. No recent nutrient readings — last measured 2020.
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 |
|---|---|---|---|
| 2026 | 6.5 ft (1) | — | — |
| 2025 | 5.9 ft (6) | — | — |
| 2024 | 6.6 ft (4) | — | — |
| 2020 | 7.2 ft (3) | 6.0 µg/L (2) | 18.0 µg/L (1) |
| 2019 | 6.3 ft (3) | 5.0 µg/L (2) | — |
| 2018 | 4.8 ft (3) | 6.5 µg/L (2) | 20.0 µg/L (1) |
| 2017 | 6.4 ft (3) | 4.0 µg/L (2) | — |
| 2016 | 3.8 ft (3) | 8.0 µg/L (2) | — |
| 2015 | 4.3 ft (2) | 6.5 µg/L (2) | — |
| 2014 | 5.3 ft (5) | 6.5 µg/L (2) | — |
Latest individual samples: Secchi 6.5 ft (2026-07-07), chlorophyll-a 7 µg/L (2020-08-17), and total phosphorus 18 µg/L (2020-08-17).
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.
Halsey Lake - Deep HoleStation 193047
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
Halsey Lake depth maps
1 converted map sheet · 1 map-aligned. These historical surveys are not for navigation.
Navigable depth map
Halsey 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 679300 · map alignment passed · 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 2024 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-specific 2024 comprehensive survey across early/late spring fyke netting, walleye recapture electrofishing, bass electrofishing and fall gamefish sampling.
DNR found a low-density stocked walleye population with strong growth and size structure, low pike and bass abundance, recovering panfish populations and abundant aggregate bullhead.
- Two method dates are printed as 2025 inside the 2024 report; those dates are excluded and metric scopes retain only unambiguous 2024 survey context.
- The report gives conflicting totals of 190, 181 and 181 different adult walleye across sections; only the explicit 190-fish size-structure sample is retained, while sex-share calculations tied to conflicting denominators are excluded.
- Transferred/stocked fish counts and historical comparators are not relabeled as 2024 survey catches.
Black crappie
4.5 fish/net-nightSurvey CPUE · p. 1386.4 percentShare at least 8 inches long · p. 1337.1 percentShare at least 10 inches long · p. 1325 percentShare at least 12 inches long · p. 13
Bluegill
8.7 fish/net-nightSurvey CPUE · p. 11104 fishTotal captured · p. 1184.6 percentShare at least 6 inches long · p. 1125 percentShare at least 7 inches long · p. 11
Bullhead (all species)
46.5 fish/net-nightEarly-spring CPUE · p. 1534.3 fish/net-nightLate-spring CPUE · p. 15173 fishFish measured · p. 1595.4 percentShare at least 9 inches long · p. 15
Creek chub
1 fishTotal captured · p. 17
Largemouth bass
3.9 adult fish/mileAdult CPUE · p. 107 fishAdults captured · p. 103 fishAdults at least 14 inches · p. 1010 inchesminimum captured length · p. 10
Northern pike
1.3 fish/net-nightSurvey CPUE · p. 839 fishTotal captured · p. 856.4 percentShare at least 21 inches long · p. 841 percentShare at least 28 inches long · p. 8
Pumpkinseed
2.7 fish/net-nightSurvey CPUE · p. 1434 fishTotal captured · p. 1482.4 percentShare at least 6 inches long · p. 1435.3 percentShare at least 7 inches long · p. 14
Smallmouth bass
8 fishTotal captured · p. 107 fishAdults captured · p. 103.9 adult fish/mileAdult CPUE · p. 101 fishFish at least 10 inches · p. 11
Walleye
110 fishAdults captured and marked · p. 592 fishAdults captured in recapture run · p. 521 fishMarked adults recaptured · p. 5462 adult fishAdult population estimate · p. 5
White sucker
4.7 fish/net-nightSurvey CPUE · p. 16130 fishFish measured · p. 1684.6 percentShare at least 10 inches long · p. 1665.4 percentShare at least 13 inches long · p. 16
Yellow perch
0.7 fish/net-nightSurvey CPUE · p. 1711 fishTotal captured · p. 177 inchesAll captured fish shorter than 7 inches · p. 17
2024 Halsey Lake Comprehensive Survey Report, Florence CountyMatched by exact wbic and name county · WBICs 679300 · verified 2026-07-19Wisconsin DNR fisheries survey report; LakeList operator documented permission to leverage this report with source attribution.
Wisconsin DNR · 2026–2027 season
Lake-specific fishing regulations
Rule text published by the DNR for this waterbody, cached by WBIC and verified 2026-07-12.
All species
Catch and release fishing for largemouth and smallmouth bass is open year round unless otherwise noted. Motor Trolling is allowed with 1 hook, bait, or lure per angler, and 3 hooks, baits, or lures maximum per boat.
Catfish
Season Dates: Open All Year. No minimum length limit and the daily bag limit is 10.
Cisco and whitefish
Season Dates: Open All Year. No minimum length limit and the daily bag limit is 10.
Lake sturgeon
Season Dates: Closed. No fishing allowed.
Largemouth and smallmouth bass
Season Dates: June 20, 2026 to March 7, 2027. No minimum length, but largemouth bass and smallmouth bass from 14" to 18" may not be kept, and only 1 fish over 18 is allowed. The daily bag limit is 5.
Muskellunge and hybrids
Season Dates: May 2, 2026 to December 31, 2026 on open water. The minimum length limit is 40" and the daily bag limit is 1.
Northern pike
Season Dates: May 2, 2026 to March 7, 2027. No minimum length limit and the daily bag limit is 5.
Paddlefish
Season Dates: Closed. No fishing allowed.
Panfish
Season Dates: Open All Year. No minimum length limit and the daily bag limit is 10.
Rock, yellow, and white bass
Season Dates: Open All Year. No minimum length limit and the daily bag limit is unlimited.
Rough fish
Season Dates: Open All Year. No minimum length limit and the daily bag limit is unlimited.
Shovelnose sturgeon
Season Dates: Closed. No fishing allowed.
Trout and salmon
See Trout regulations layer.
Urban waters gamefish
This waterbody is not considered an urban water, Urban Waters Gamefish regulations do not apply.
Walleye, sauger, and hybrids
Season Dates: May 2, 2026 to March 7, 2027. The minimum length is 15", but walleye, sauger, and hybrids from 20" to 24" may not be kept, and only 1 fish over 24" is allowed. The daily bag limit is 3.
Regulations can change. The official DNR page controls; verify seasons, boundaries, bag limits, and emergency rules before fishing.
506surface acres
10max depth feet
1public access points
45.8476, -88.6319latitude, longitude
Access
Public access points
Boat launchHalsey Lake Access45.85372, -88.62267Managed by FEDERALTOWN OF LONG LAKERamp surface: GravelADA-accessible feature: NoVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
Largemouth BassNorthern PikePanfishWalleye
Depth FAQ
How deep is Halsey Lake?
Halsey Lake is 10 feet deep at its deepest point, according to Wisconsin DNR records.
Is there a free depth map of Halsey Lake?
Yes. LakeList publishes a free interactive depth contour map of Halsey Lake 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 Halsey 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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