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Windfall Lake
Enhanced dataInteractive depth contours
Windfall LakeSawyer County, WI
Contours load with map
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 66% of the lake. Small gaps between recordings are smoothly connected; larger unrecorded areas follow the lake's depth model calibrated to the DNR-documented 16-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 Windfall Lake.
Start here
Fishing forecast
Best windows for Windfall 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
Windfall 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.
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
Windfall Lake depth maps
1 converted map sheet · 1 map-aligned. These historical surveys are not for navigation.
Navigable depth map
Windfall 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 2046500 · 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 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 April fyke-net survey across 30 net-nights and May 14 whole-shoreline electrofishing across 1.6 miles.
DNR found a solid adult-walleye density, exceptional northern-pike size, low-density high-quality crappie, very abundant smaller largemouth bass and a bluegill population recovering from winterkill.
- The report describes several percentile categories without exact catch rates; those qualitative comparisons are not converted into numeric metrics.
- No counts are back-calculated from survey effort or rounded density.
- Bluegill winterkill/recovery and crappie abundance remain narrative because no exact current values are printed.
Largemouth bass
7 percentShare at least 15 inches long · p. 3
Northern pike
40 percentShare at least 28 inches long · p. 341 inchesMaximum captured length · p. 3
Walleye
4.2 adult fish/acreAdult density estimate · p. 3
2025 Spring Fisheries Survey Summary: Windfall Lake, Sawyer CountyMatched by exact wbic and name county · WBICs 2046500 · verified 2026-07-18Wisconsin DNR fisheries survey report; LakeList operator documented permission to leverage this report with source attribution.
Fishbrain community activity
Recent catch activity
Aggregated public catch activity matched to Windfall Lake. Exact catch locations and angler details are not shown.
Most reported species in this extract
Largemouth bass4Longear sunfish1Black crappie1
Catch analytics
Seasonal fish catch patterns
Pick a species to see when anglers reported it, compare against all fish by month, then scan year-by-year catch volume.
Largemouth bass by monthMonthly reports tagged as Largemouth bass.
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All fish by monthTotal public catch reports across every listed species.
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Yearly catch viewYear-by-year public catch volume.
No yearly catch aggregates yet.
Catch counts are community reports, not a population survey or a guarantee of current fishing conditions.
View source on Fishbrain104surface acres
16max depth feet
0public access points
45.6639, -91.2111latitude, longitude
Access
Public access points
No mapped access points yet
LakeList has not matched a public launch, park, or shoreline access point for this lake yet.
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
WalleyeLargemouth BassMuskyNorthern PikePanfishSmallmouth BassTrout
Wisconsin DNR stocking
Fish stocking history
The latest published year is 2025, when 510 fish were recorded across 1 entry.
2025
WalleyeChippewa/St. Croix · Large Fingerling
5107.1 in average
2022
WalleyeMississippi Headwaters · Large Fingerling
6,6037.4 in average
2020
WalleyeUnspecified · Large Fingerling
5107.6 in average
Depth FAQ
How deep is Windfall Lake?
Windfall Lake is 16 feet deep at its deepest point and averages about 12 feet, according to Wisconsin DNR records.
Is there a free depth map of Windfall Lake?
Yes. LakeList publishes a free interactive depth contour map of Windfall 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 Windfall 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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