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Bullhead Lake
Enhanced dataInteractive depth contours
Bullhead LakeManitowoc 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 100% of the lake. Small gaps between recordings are smoothly connected; larger unrecorded areas follow the lake's depth model calibrated to the DNR-documented 40-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 Bullhead Lake.
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Fishing forecast
Best windows for Bullhead 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
Bullhead Lake water temperature today
Modeled surface-temperature estimate built from seasonal climate, lake depth, and live National Weather Service air temperatures near this lake.
75°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
Impairment Unknown, Excess Algal Growth, EutrophicationPollutants: Mercury, Total Phosphorus
- Status
- TMDL Approved, 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
Historical volunteer-monitoring record for this lake.
Last sampled date unknown
Individual readings are not retained for this lake — the index below is what the monitoring record summarizes.
66 five-year summer trophic state index · Eutrophic. Nutrient-rich, greener water — more algae and plant growth, common in shallower lakes.
Listed as impaired on the DNR/EPA water-condition assessment — see the notice on this page for details.Bullhead Lake - Deep HoleStation 363064 · TSI based on chlorophyll
Historical record only — no current water-quality data exists for this lake. 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 sheetFishing 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
Bullhead Lake depth maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Bullhead 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 68300 · 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 2025 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 2025 spring fyke-net and late-spring electrofishing survey. Encounter totals, unique counts and modeled adult abundance remain distinct.
DNR found a low-density, older northern-pike population despite high encounter CPUE, a low-density stocked walleye fishery, very high-density slow-growing largemouth bass, fast-growing but low-to-moderate bluegill, and very few black crappie or yellow perch.
- The detailed northern-pike result is 49 adults with a reported range of 38-68; the discussion rounds the estimate to 50, so LakeList retains the detailed value and notes the rounding.
- Fyke nets were pulled at 40°F, potentially before walleye, black crappie and yellow perch were fully vulnerable to the gear.
- Approximate electrofishing lengths for one black crappie and one yellow perch are excluded rather than converted to exact measurements.
- Historical CPUE/PSD values and stocking-table rows are not relabeled as 2025 survey catches.
Black crappie
1 fishSpring-net catch count · p. 210 fish/net-nightSpring-net CPUE · p. 2111.6 inchesSpring-net fish length · p. 22
Bluegill
66 fishTotal captured · p. 1852.8 fish/mileSurvey CPUE · p. 182.3 inchesMinimum captured length · p. 189.1 inchesMaximum captured length · p. 18
Largemouth bass
272 fishTotal captured · p. 15217.6 fish/mileSurvey CPUE · p. 154.9 inchesMinimum captured length · p. 1516.7 inchesMaximum captured length · p. 15
Northern pike
143 fishTotal fyke-net encounters · p. 85.7 fish/mileSurvey CPUE · p. 821.1 inchesMinimum captured length · p. 828.9 inchesMaximum captured length · p. 8
Walleye
5 fishTotal captured · p. 120.2 fish/mileSurvey CPUE · p. 1213.3 inchesMinimum captured length · p. 1223.6 inchesMaximum captured length · p. 12
Yellow perch
1 fishSpring-net catch count · p. 230 fish/net-nightSpring-net CPUE · p. 2310.2 inchesSpring-net fish length · p. 24
2025 Comprehensive Survey Report for Bullhead Lake, Manitowoc CountyMatched by exact wbic and name county · WBICs 68300 · verified 2026-07-18Wisconsin 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 up to 3 hooks, baits, or lures, per angler.
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: May 2, 2026 to March 7, 2027. The minimum length limit is 14" and 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. The minimum length limit is 26" and the daily bag limit is 2.
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 limit is 15" and the daily bag limit is 3.
Regulations can change. The official DNR page controls; verify seasons, boundaries, bag limits, and emergency rules before fishing.
70surface acres
40max depth feet
1public access points
44.1035, -88.0377latitude, longitude
Access
Public access points
Boat launchBullhead Lake Boat Ramp44.10185, -88.03975Managed by COUNTYTOWN OF ROCKLANDRamp surface: ConcreteADA-accessible feature: YesVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
Largemouth BassPanfishNorthern PikeWalleye
Depth FAQ
How deep is Bullhead Lake?
Bullhead Lake is 40 feet deep at its deepest point and averages about 13 feet, according to Wisconsin DNR records.
Is there a free depth map of Bullhead Lake?
Yes. LakeList publishes a free interactive depth contour map of Bullhead 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 Bullhead 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 Pagesname, coordinates, county, source identifiers
LakeList record updated 2026-07-12
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