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Lake Keesus
Enhanced dataInteractive depth contours
Lake KeesusWaukesha 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 65% of the lake. Small gaps between recordings are smoothly connected; larger unrecorded areas follow the lake's depth model calibrated to the DNR-documented 42-ft maximum depth. More accurate than a pure model, but still an estimate. Not for navigation.LakeList assistant
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Fishing
Fishing at Lake Keesus
Fishery
Notable species
Largemouth BassPanfishNorthern PikeWalleye
Angler reports · Fishbrain
What anglers catch here
Anglers have logged 220 catches on Lake Keesus via Fishbrain — 1 in the last 30 days, most recently on Jul 26, 2026.
Most-reported species
- Largemouth bass
- Northern pike
- Bluegill
- Pumpkinseed
- Yellow perch
27 of the 220 logged catches didn’t name a species and aren’t listed above.
Seasonality
All fishOf the 220 logged catches, 178 carry a month and 175 carry a year; the charts cover those.
2024 had the most reports (35).
Counts reflect reporting activity, not fish populations. Waterbody location is provider-level; exact spots and angler details aren’t shown.
Fishery details for this lakeExplore this area on FishbrainWisconsin DNR fisheries survey
Fish population survey
Structured LakeList extraction from the 2023 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 contextThe report is specific to Lake Keesus and describes a single-night electrofishing survey on May 8, 2023. Catch counts and size metrics are preserved as sample statistics and are not presented as whole-population estimates.
The single-night survey found abundant panfish, including 48 black crappie with strong size and 45 bluegill with above-class size structure, plus 24 largemouth bass with half at legal size.
- DNR typically surveys Lake Keesus each fall to monitor the fishery and evaluate whether regulation changes may be needed.
Black crappie
48 fishBlack crappie captured · p. 29.6 inchesAverage length · p. 212.8 inchesMaximum length · p. 233 percentShare over 10 inches · p. 2
Bluegill
45 fishBluegill captured · p. 25.9 inchesAverage length · p. 29.3 inchesMaximum length · p. 215 percentShare over 8 inches · p. 2
Largemouth bass
24 fishLargemouth bass captured · p. 214.1 inchesAverage length · p. 218.8 inchesMaximum length · p. 250 percentShare at least 14 inches · p. 2
Northern pike
5 fishNorthern pike captured · p. 219.2 inchesMinimum observed length · p. 233.3 inchesMaximum observed length · p. 2
Pumpkinseed
5 fishPumpkinseed captured · p. 2
Walleye
6 fishWalleye captured · p. 29 inchesMinimum observed length · p. 221 inchesMaximum observed length · p. 2
Yellow perch
1 fishYellow perch captured · p. 2
Lake Keesus spring shocking survey, 2023Matched by exact lakelist id name county state wbic · WBICs 852400 · verified 2026-07-19Wisconsin DNR fisheries survey report; LakeList operator documented permission to leverage this report with source attribution.
NWS weather
Weather windows
Weather-based planning from the National Weather Service hourly forecast near this lake — not a catch forecast.
Loading latest forecast…
Checking wind, precipitation, and near-term weather windows.
Water temperature
Lake Keesus water temperature today
Modeled surface-temperature estimate built from seasonal climate, lake depth, and live National Weather Service air temperatures near this lake.
71°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
Lake Keesus depth maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Lake Keesus · 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 852400 · 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.
235surface acres
42max depth feet
1public access points
43.1670, -88.3139latitude, longitude
Access
Public access points
Boat launchAccess43.16333, -88.31041Managed by Wisconsin DNR
DNR verifiedDirections
Nearby
Trip-planning places
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Depth FAQ
How deep is Lake Keesus?
Lake Keesus is 42 feet deep at its deepest point, according to Wisconsin DNR records.
Is there a free depth map of Lake Keesus?
Yes. LakeList publishes a free interactive depth contour map of Lake Keesus 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 Keesus 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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