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Mildred Lake
Enhanced dataInteractive depth contours
Mildred LakeOneida 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 57% of the lake. Small gaps between recordings are smoothly connected; larger unrecorded areas follow the lake's depth model calibrated to the DNR-documented 45-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 Mildred Lake.
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Fishing forecast
Best windows for Mildred 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
Mildred Lake 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.
DNR water check
Water quality quick take
From Wisconsin DNR / Citizen Lake Monitoring readings at Mildred Lake at Maximum Depth.
Sampled Jun 2026Volunteer monitoring since 1992
Very clear, low-algae water — summer clarity of 16.5 ft puts it among the clearest quarter of monitored Wisconsin lakes.
Based on July–August 2025 averages across 4 volunteer readings.35Oligotrophic5-yr summer TSI
Very clear, low-nutrient water — often deep, with limited plant growth.
Water claritySecchi disk depth
16.5 ftJul–Aug 2025 avg (2 readings)
Crystal clearStable since 2018
Clearer than 89% of 596 monitored Wisconsin lakes with current readings.
AlgaeChlorophyll-a
1.5 µg/LJul–Aug 2025 avg (2 readings)
Very lowStable since 2018
NutrientsTotal phosphorus — fuels plant & algae growth
10 µg/LLatest single sample · 2021-07-25
Very lowVery low phosphorus means very 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 | 16.5 ft (2) | 1.5 µg/L (2) | — |
| 2024 | 16.7 ft (3) | 2.0 µg/L (2) | — |
| 2023 | 19.5 ft (2) | 2.0 µg/L (2) | — |
| 2022 | 20.5 ft (2) | 2.0 µg/L (2) | — |
| 2021 | 17.0 ft (2) | 2.0 µg/L (2) | 10.0 µg/L (1) |
| 2020 | 21.0 ft (1) | 2.0 µg/L (1) | — |
| 2019 | 20.0 ft (2) | 2.0 µg/L (2) | — |
| 2018 | 25.0 ft (2) | 1.0 µg/L (2) | — |
| 2017 | 17.5 ft (2) | 2.0 µg/L (2) | — |
| 2016 | 18.5 ft (2) | 1.0 µg/L (1) | — |
Latest individual samples: Secchi 17 ft (2026-06-29), chlorophyll-a 1 µg/L (2026-06-29), and total phosphorus 10 µg/L (2021-07-25).
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.
Mildred Lake at Maximum DepthStation 443195 · TSI based on chlorophyll
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 maps2 converted map sheetsView 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
Mildred Lake depth maps
2 converted map sheets. These historical surveys are not for navigation.
Navigable depth map
Mildred 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 1004600 · 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.
Official fishing intelligence
Fishing reports and forecasts
LakeList matched these official resources by exact lake name and county. Report text stays with the publisher.
Forecasts describe DNR survey findings and expected opportunities; they are not real-time catch reports or a guarantee of fishing conditions.
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 2025 comprehensive treaty-protocol survey using early-spring fyke netting, early/late-spring and fall electrofishing plus supplemental muskellunge angling. Gear components and adult estimates remain separate.
DNR found generally average abundance but unusually large size structure, stocking-dependent walleye and muskellunge, limited recent walleye recruitment, and strong stakeholder interest in maintaining a balanced fishery.
- No bass or northern-pike population estimate is loaded because recaptures were insufficient.
- The male walleye growth model did not converge; only the explicit female model is retained.
- Gear-specific counts and CPUE remain separate from combined catches and the adult walleye estimate.
- Historical 2005 values, stocking-table releases, survey-response counts and regulation recommendations are context rather than current fish metrics.
Black crappie
126 fishTotal captured · p. 73.1 fish/net-nightSpring-net CPUE · p. 74.1 inchesMinimum captured length · p. 712.3 inchesMaximum captured length · p. 7
Bluegill
259 fishTotal captured · p. 111.1 inchesMinimum captured length · p. 118.6 inchesMaximum captured length · p. 116.3 inchesMean captured length · p. 11
Green sunfish
11 fishTotal captured · p. 22
Green sunfish x Bluegill hybrid
6 fishTotal captured · p. 22
Johnny darter
2 fishTotal captured · p. 22
Largemouth bass
68 fishTotal captured · p. 123 inchesMinimum captured length · p. 1216.5 inchesMaximum captured length · p. 1211 inchesMean captured length · p. 12
Muskellunge
28 fishTotal captured · p. 1433.3 inchesMinimum captured length · p. 1444.5 inchesMaximum captured length · p. 1438 inchesMean captured length · p. 14
Northern pike
14 fishTotal captured · p. 1615 inchesMinimum captured length · p. 1628.7 inchesMaximum captured length · p. 1623.1 inchesMean captured length · p. 16
Pumpkinseed
1 fishTotal captured · p. 22
Pumpkinseed x Bluegill hybrid
1 fishTotal captured · p. 22
Smallmouth bass
183 fishTotal captured · p. 172.6 inchesMinimum captured length · p. 1716.2 inchesMaximum captured length · p. 1710.5 inchesMean captured length · p. 17
Walleye
256 fishTotal captured · p. 188 inchesMinimum captured length · p. 1828 inchesMaximum captured length · p. 1817.4 inchesMean captured length · p. 18
White sucker
1 fishTotal captured · p. 22
Yellow perch
41 fishTotal captured · p. 212.8 inchesMinimum captured length · p. 218.4 inchesMaximum captured length · p. 216.7 inchesMean captured length · p. 21
2025 Mildred Fisheries Survey Report, Oneida CountyMatched by exact wbic and name county · WBICs 1004600 · verified 2026-07-18Wisconsin DNR fisheries survey report; LakeList operator documented permission to leverage this report with source attribution.
168surface acres
45max depth feet
1public access points
45.6757, -89.5379latitude, longitude
Access
Public access points
Boat launchMildred Lake Access45.67523, -89.51889Managed by STATE(DNR)TOWN OF NEWBOLDRamp surface: Concrete PlankADA-accessible feature: NoVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
Largemouth BassMuskyPanfishWalleye
Depth FAQ
How deep is Mildred Lake?
Mildred Lake is 45 feet deep at its deepest point, according to Wisconsin DNR records.
Is there a free depth map of Mildred Lake?
Yes. LakeList publishes a free interactive depth contour map of Mildred 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 Mildred 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