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Cedar Lake
Enhanced dataInteractive depth contours
Cedar LakeIron 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 91% 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 Cedar Lake.
Start here
Fishing forecast
Best windows for Cedar 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
Cedar 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 Cedar Lake - Center Of Lake.
Last sampled Aug 2023
Through 2023, somewhat hazy but low-algae water — summer clarity of 6.4 ft sits near the middle of monitored Wisconsin lakes.
Based on July–August volunteer averages from 2022–2023; each value shows its own year.Water claritySecchi disk depth
6.4 ftJul–Aug 2022 avg (2 readings)
Slight haze2019–2023
Clearer than 48% of 596 monitored Wisconsin lakes with current readings.
AlgaeChlorophyll-a
4 µg/LJul–Aug 2023 avg (2 readings)
LowNutrientsTotal phosphorus — fuels plant & algae growth
24 µg/LLatest single sample · 2023-05-12
ModerateModerate phosphorus can support noticeable plant/algae growth.
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 |
|---|---|---|---|
| 2023 | 8.1 ft (1) | 4.0 µg/L (2) | — |
| 2022 | 6.4 ft (2) | 13.0 µg/L (2) | — |
| 2019 | 6.8 ft (5) | — | — |
Latest individual samples: Secchi 8.1 ft (2023-07-31), chlorophyll-a 5 µg/L (2023-08-28), and total phosphorus 24 µg/L (2023-05-12).
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.
Cedar Lake - Center Of LakeStation 263158
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 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
Cedar Lake depth maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Cedar 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 2309700 · 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.
187surface acres
21max depth feet
1public access points
46.2080, -89.9500latitude, longitude
Access
Public access points
Boat launchCedar Lake Access46.20414, -89.95841Managed by STATE(DNR)TOWN OF MERCERRamp surface: PavedADA-accessible feature: NoVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
MuskyNorthern PikePanfishWalleyeLargemouth BassSmallmouth Bass
Wisconsin DNR stocking
Fish stocking history
The latest published year is 2022, when 1,866 fish were recorded across 1 entry.
2022
WalleyeMississippi Headwaters · Large Fingerling
1,8667.1 in average
2020
WalleyeMississippi Headwaters · Large Fingerling
1,8666.5 in average
2018
WalleyeMississippi Headwaters · Large Fingerling
1,8646.4 in average
2016
WalleyeMississippi Headwaters · Large Fingerling
1,8647.3 in average
2014
WalleyeMississippi Headwaters · Large Fingerling
1,8666.2 in average
2012
WalleyeMississippi Headwaters · Small Fingerling
6,6851.7 in average
2010
WalleyeMississippi Headwaters · Small Fingerling
6,6821.7 in average
Depth FAQ
How deep is Cedar Lake?
Cedar Lake is 21 feet deep at its deepest point and averages about 11 feet, according to Wisconsin DNR records.
Is there a free depth map of Cedar Lake?
Yes. LakeList publishes a free interactive depth contour map of Cedar 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 Cedar 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