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Hemlock Lake
Enhanced dataInteractive depth contours
Hemlock LakeBarron 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 77% 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 Hemlock Lake.
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Fishing forecast
Best windows for Hemlock 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
Hemlock 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 Hemlock Lake - Deep Hole.
Sampled May 2026
High algae readings in the most recent monitored summers.
Based on July–August 2025 averages across 2 volunteer readings.AlgaeChlorophyll-a
23 µg/LJul–Aug 2025 avg (2 readings)
HighWorsening — up ~71% vs earlier years
No recent clarity readings — last measured 2018. No recent nutrient readings — last measured 2015.
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 | — | 23.0 µg/L (2) | — |
| 2022 | — | 27.0 µg/L (2) | — |
| 2021 | — | 20.0 µg/L (1) | — |
| 2020 | — | 16.0 µg/L (2) | — |
| 2019 | — | 12.0 µg/L (2) | — |
| 2018 | 7.1 ft (7) | 13.0 µg/L (2) | — |
| 2017 | 3.9 ft (2) | 16.0 µg/L (1) | — |
| 2016 | 4.1 ft (2) | 15.0 µg/L (2) | — |
| 2015 | 4.6 ft (2) | 11.0 µg/L (1) | — |
| 2014 | 6.3 ft (2) | 7.0 µg/L (2) | — |
Latest individual samples: Secchi 6.5 ft (2020-10-29), chlorophyll-a 2 µg/L (2026-05-18), and total phosphorus 34 µg/L (2015-09-01).
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.
Hemlock Lake - Deep HoleStation 033142
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
Hemlock Lake depth maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Hemlock 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 2109800 · 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.
Wisconsin 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 contextHemlock Lake metrics where lake-specific values are reported; Hemlock Lake walleye population estimate was excluded due to high estimate error, and chain-wide context retained where the report presents only combined values.
The 2023 Wisconsin DNR survey excluded the Hemlock Lake walleye population estimate due to high estimate error, but found Hemlock had high northern pike, bluegill, and black crappie catch rates relative to the rest of the Red Cedar Chain. Hemlock panfish abundance was greatest in the chain, likely due to shallower and more vegetated habitat.
- Maintain adult walleye density between 2 and 4 fish/acre and rolling five-year mean age-0 fall electrofishing catch rate above 15 fish/mile.
- Next comprehensive fisheries survey scheduled for 2029; fall walleye recruitment surveys continue annually.
- Maintain current bass, northern pike, and panfish regulations; no specific management actions recommended for northern pike, bluegill, or black crappie at this time.
- Protect natural shorelines and nearshore walleye spawning habitat; maintain invasive species monitoring and control programs.
Black crappie
28 fish/mileLate spring electrofishing CPUE · p. 288.5 inchesMean length · p. 2994 PSD-8PSD-8 size structure · p. 2933 PSD-10PSD-10 size structure · p. 29
Bluegill
196 fish/mileLate spring electrofishing CPUE · p. 256 inchesMean length · p. 2558 PSD-6PSD-6 size structure · p. 257 PSD-8PSD-8 size structure · p. 25
Largemouth bass
17.3 fish/mileLate spring electrofishing CPUE · p. 1683 PSD-12PSD-12 size structure · p. 1755 PSD-14PSD-14 size structure · p. 17
Northern pike
6.6 fish/net nightSpring netting CPUE · p. 1421 PSD-21PSD-21 size structure · p. 14
Smallmouth bass
0.8 fish/mileLate spring electrofishing CPUE · p. 2184 PSD-11PSD-11 size structure · p. 2145 PSD-14PSD-14 size structure · p. 21
Walleye
Not reportedAdult population estimate · p. 8
Fishery Survey Report for The Red Cedar Chain of Lakes, Barron and Washburn counties, Wisconsin, 2023Matched by exact wbic and name county · WBICs 2112800, 2109800, 2109600 · verified 2026-07-17Wisconsin 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 Hemlock Lake. Exact catch locations and angler details are not shown.
Most reported species in this extract
Largemouth bass6Black crappie3Northern pike2Bluegill2Rock bass1White bass1Walleye1
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 Fishbrain364surface acres
21max depth feet
1public access points
45.5676, -91.5692latitude, longitude
Access
Public access points
Boat launchHemlock Lake Public Boat Landing45.56400, -91.57034Managed by COUNTYTOWN OF CEDAR LAKERamp surface: ConcreteADA-accessible feature: NoVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
Largemouth BassNorthern PikePanfishSmallmouth BassWalleye
Depth FAQ
How deep is Hemlock Lake?
Hemlock Lake is 21 feet deep at its deepest point and averages about 8 feet, according to Wisconsin DNR records.
Is there a free depth map of Hemlock Lake?
Yes. LakeList publishes a free interactive depth contour map of Hemlock 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 Hemlock 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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