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Bass Lake
Enhanced dataInteractive depth contours
Bass LakeWashburn County, WI
Contours load with map Access
Interactive depth contours5-foot typical interval · Modeled depth estimate · Not a survey · Not for navigation
Source: LakeList depth modelmedium confidence · QA passed · Select a contour to inspect its mapped depthModeled depth estimate: contours computed from the lake's shoreline shape and its documented 31-ft maximum depth (depth grows with distance from shore, calibrated to the documented mean depth where available). This is a smooth mathematical model, not a survey - real holes, bars, and drop-offs will differ. Community sonar (C-MAP Genesis) overlays where recorded. Not for navigation.LakeList assistant
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Fishing spots, food, lodging, marinas, and rentals around Bass Lake.
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Fishing forecast
Best windows for Bass 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
Bass 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.
DNR water check
Water quality quick take
From Wisconsin DNR / Citizen Lake Monitoring readings at Bass Lake - Site 1-Deep Hole.
Sampled Sep 2025Volunteer monitoring since 1990
Clear, low-algae water — summer clarity of 15 ft is clearer than most monitored Wisconsin lakes.
Based on July–August volunteer averages from 2023–2024; each value shows its own year.39Oligotrophic5-yr summer TSI
Very clear, low-nutrient water — often deep, with limited plant growth.
Water claritySecchi disk depth
15 ftJul–Aug 2023 avg (2 readings)
ClearDeclining — down ~19% vs earlier years
Clearer than 69% of 596 monitored Wisconsin lakes with current readings.
AlgaeChlorophyll-a
2 µg/LJul–Aug 2024 avg (2 readings)
Very lowStable since 2017
NutrientsTotal phosphorus — fuels plant & algae growth
11 µg/LLatest single sample · 2025-07-23
LowLow phosphorus means light plant/algae growth pressure.
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 |
|---|---|---|---|
| 2025 | — | 3.0 µg/L (1) | 11.0 µg/L (1) |
| 2024 | — | 2.0 µg/L (2) | 11.0 µg/L (1) |
| 2023 | 15.0 ft (2) | 1.0 µg/L (1) | — |
| 2022 | 14.6 ft (5) | 3.0 µg/L (2) | — |
| 2021 | 16.0 ft (5) | — | — |
| 2020 | 19.0 ft (5) | 2.0 µg/L (1) | — |
| 2019 | 20.4 ft (5) | 2.0 µg/L (1) | — |
| 2018 | 17.0 ft (6) | 2.0 µg/L (1) | — |
| 2017 | 15.4 ft (6) | 3.0 µg/L (1) | — |
| 2016 | 17.6 ft (5) | 1.5 µg/L (2) | — |
Latest individual samples: Secchi 12 ft (2025-09-10), chlorophyll-a 3 µg/L (2025-07-23), and total phosphorus 11 µg/L (2025-07-23).
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.
Bass Lake - Site 1-Deep HoleStation 663050 · TSI based on Secchi
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
Bass Lake depth maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Bass 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 2451300 · 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.
132surface acres
31max depth feet
1public access points
45.7071, -91.6477latitude, longitude
Access
Public access points
Boat launchAccess45.91289, -92.00503Managed by Wisconsin DNR
DNR verifiedDirections
Nearby
Trip-planning places
CampgroundSac2.5 miles away
CampgroundChoctaw2.6 miles away
CampgroundSeneca2.7 miles away
CampgroundWinnebago2.7 miles away
CampgroundFox2.7 miles away
CampgroundShoshone2.8 miles away
CampgroundBlackfoot2.8 miles away
CampgroundComanche2.8 miles away
CampgroundHuron2.8 miles away
CampgroundMingo2.9 miles away
CampgroundMiami2.9 miles away
CampgroundOneida2.9 miles away
CampgroundMenomonee2.9 miles away
CampgroundCheyenne2.9 miles away
CampgroundCherokee3.0 miles away
CampgroundSantee3.0 miles away
CampgroundArapahoe3.0 miles away
CampgroundPawnee3.0 miles away
CampgroundCrow3.0 miles away
CampgroundDakota3.0 miles away
Fishery
Notable species
PanfishLargemouth BassNorthern PikeWalleye
Depth FAQ
How deep is Bass Lake?
Bass Lake is 31 feet deep at its deepest point and averages about 18 feet, according to Wisconsin DNR records.
Is there a free depth map of Bass Lake?
Yes. LakeList publishes a free interactive depth contour map of Bass Lake at a typical 5-foot interval, with an optional 3D underwater view, derived from LakeList depth model survey data.
Where does the Bass Lake depth map come from?
The interactive depth contours are derived from LakeList depth model. Each contour set passes a visual QA review against the source document before it is published. The depths are a modeled estimate calibrated to the lake's documented maximum depth - not a survey, and not for navigation.
Trust and freshness
Where this lake data comes from
Wisconsin DNR Lake Mapsname, coordinates, county, source identifiers
LakeList record updated 2026-07-21
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