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Lake Winnebago
Enhanced dataInteractive depth contours
Lake WinnebagoWinnebago 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 27% of the lake. Small gaps between recordings are smoothly connected; larger unrecorded areas follow the lake's depth model calibrated to the DNR-documented 21-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 Winnebago.
Start here
Fishing forecast
Best windows for Lake Winnebago
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 Winnebago 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.
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.
64 five-year summer trophic state index · Eutrophic. Nutrient-rich, greener water — more algae and plant growth, common in shallower lakes.
Lake Winnebago - 2 Mi From NeenahStation 713243 · TSI based on chlorophyll
Historical record only — no current water-quality data exists for this lake. LakeList verified 2026-07-12.What visitors and local sources report
Lake experiences
Dated, source-linked observations about swimming and other lake activities. These are historical reports, not live conditions or a safety grade.
SwimmingSwimmer's itch
Swimmer's itch mentioned in local coverage
A June 2025 WBAY segment connected Lake Winnebago swimming concerns with blue-green algae and swimmer's itch. This is a media report, not an official diagnosis or current closure notice.
WBAY: Blue-green algae causing swimmer's itch in Lake WinnebagoRead reports in context.
Conditions can change by date and shoreline. A report does not establish a lake-wide or current hazard, and no indexed report does not mean an issue has never occurred. Check current official notices before entering the water.
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
Lake Winnebago depth maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Lake Winnebago · 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 131100 · 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 · 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
Bag limits are for fish caught in all lakes in the WINNEBAGO CHAIN including CINCOE LAKE, LAKE BUTTE DES MORTS, LAKE POYGAN, LAKE WINNECONNE, PARTRIDGE CROP LAKE, PARTRIDGE LAKE 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. Open all year for all species except muskellunge, northern pike, flathead catfish and lake sturgeon.
Catfish
Season Dates: Open All Year. See specific species regulations in this group.
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: Open All Year. 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 50" 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 25.
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: Open All Year. No minimum length limit and the daily bag is 3, only one of which may be a sauger or hybrid.
Regulations can change. The official DNR page controls; verify seasons, boundaries, bag limits, and emergency rules before fishing.
131,939surface acres
21max depth feet
20public access points
44.0028, -88.4305latitude, longitude
Access
Public access points
Boat launch24th Avenue Boat Launch43.99177, -88.53573Managed by CITYTOWN OF OSHKOSHRamp surface: ConcreteADA-accessible feature: YesVerified 2026-07-12
Boat launchAsylum Point Park & Boat Landing44.06543, -88.51688Managed by COUNTYTOWN OF OSHKOSHRamp surface: ConcreteADA-accessible feature: NoVerified 2026-07-12
Boat launchBrothertown Harbor Off Cty H43.96628, -88.32043Managed by Wisconsin DNR
DNR verifiedDirections
Boat launchCalumet - Columbia Park43.91642, -88.32897Managed by Wisconsin DNR
DNR verifiedDirections
Boat launchCalumet County Boat Launch44.10414, -88.32703Managed by Wisconsin DNR
DNR verifiedDirections
Boat launchColumbia Park Boat Access - Google MapLake Winnebago -- Oshkosh - Fugleburg Park43.99477, -88.53553Managed by Wisconsin DNR
DNR verifiedDirections
Boat launchDoemel Point Access44.03960, -88.51008Managed by CITYCITY OF OSHKOSHRamp surface: ConcreteLanding type: CARRY-INADA-accessible feature: NoVerified 2026-07-12
Boat launchDoty Park Boat Ramp44.18509, -88.44959Managed by CITYCITY OF NEENAHRamp surface: ConcreteADA-accessible feature: YesVerified 2026-07-12
Boat launchFishermans Park / Taycheedah43.87342, -88.36214Managed by Wisconsin DNR
DNR verifiedDirections
Boat launchFond Du Lac - Lakeside West Park - Supple Marsh43.79500, -88.45592Managed by Wisconsin DNR
DNR verifiedDirections
Boat launchFugleburg Park Boat Ramp43.99669, -88.53633Managed by CITYTOWN OF OSHKOSHRamp surface: ConcreteADA-accessible feature: YesVerified 2026-07-12
Boat launchGrundman Park Boat Landing44.10527, -88.48334Managed by COUNTYTOWN OF VINLANDRamp surface: ConcreteADA-accessible feature: NoVerified 2026-07-12
Boat launchHighway 45 Wayside Park Boat Ramp43.84399, -88.46182Managed by Wisconsin DNR
DNR verifiedDirections
Boat launchLake Winnebago Access44.01148, -88.51747Managed by CITYCITY OF OSHKOSHRamp surface: GravelLanding type: CARRY-INADA-accessible feature: NoVerified 2026-07-12
Boat launchMenominee Park Boat Ramp44.02763, -88.52012Managed by CITYCITY OF OSHKOSHRamp surface: ConcreteADA-accessible feature: NoVerified 2026-07-12
Boat launchNagy Park/Black Wolf Boat Landing43.91250, -88.47109Managed by COUNTYTOWN OF BLACK WOLFRamp surface: ConcreteADA-accessible feature: NoVerified 2026-07-12
Boat launchOshkosh - Mill Street Access44.01132, -88.52910Managed by Wisconsin DNR
DNR verifiedDirections
Boat launchRecreation Park Boat Ramp44.17568, -88.44569Managed by CITYTOWN OF NEENAHRamp surface: ConcreteADA-accessible feature: NoVerified 2026-07-12
Boat launchSherwood - High Cliff State Park44.16673, -88.29529Managed by Wisconsin DNR
DNR verifiedDirections
Boat launchStockbridge - Ecker Lakeland Dr.44.00049, -88.32436Managed by Wisconsin DNR
DNR verifiedDirections
Nearby
Trip-planning places
LodgingOshkosh Marriott Waterfront Hotel & Convention Center5.4 miles away
LodgingBrayton B&B5.6 miles away
CampgroundVintage Camping6.8 miles away
CampgroundWarbird Camping6.8 miles away
CampgroundHomebuilt Camping6.8 miles away
CampgroundUltralight Camping6.9 miles away
LodgingLakeview Motel & Restaurant6.9 miles away
CampgroundBoelter's Campground6.9 miles away
LodgingHilton Garden Inn7.0 miles away
CampgroundRelleumdats Campground7.1 miles away
LodgingQuality Inn7.1 miles away
LodgingStaff Lodge7.2 miles away
LodgingAir Academy Lodge7.2 miles away
CampgroundCamp Scholler7.3 miles away
LodgingFairfield Inn & Suites Oshkosh7.5 miles away
LodgingLa Quinta Inn7.8 miles away
CampgroundSouth End Campground8.6 miles away
CampgroundWest End Campground8.8 miles away
CampgroundUpper Park Campground9.0 miles away
CampgroundCalumet County Park9.1 miles away
Fishery
Notable species
CatfishPanfishSturgeonWalleyeLargemouth BassSmallmouth BassMuskyNorthern Pike
Depth FAQ
How deep is Lake Winnebago?
Lake Winnebago is 21 feet deep at its deepest point, according to Wisconsin DNR records.
Is there a free depth map of Lake Winnebago?
Yes. LakeList publishes a free interactive depth contour map of Lake Winnebago 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 Winnebago 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 2026-07-18
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