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Black Lake
Enhanced dataInteractive depth contours
Black LakeSawyer 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 97% of the lake. Small gaps between recordings are smoothly connected; larger unrecorded areas follow the lake's depth model calibrated to the DNR-documented 17-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 Black Lake.
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Fishing forecast
Best windows for Black 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
Black 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.
Wisconsin DNR water assessment
Public-health advice and impairment listed
The DNR assessment indicates specific public-health advice for this waterbody. Review current official guidance before your trip or eating your catch.
303(d) / impairment recordSpecific public-health advice
Mercury Contaminated Fish TissuePollutants: Mercury
- Status
- 303d Listed
- Public health
- Specific Advice
- Recreation
- Full Body Contact
- Aquatic life
- Not specified
Water is impaired due to one or more pollutants and associated quality impacts.
Review DNR water quality Check consumption advice Source updated 2025-02-10 · LakeList verified 2026-07-12
DNR water check
Water quality quick take
Historical volunteer-monitoring record for this lake.
Last sampled Sep 2004Volunteer monitoring 1979–2004
DNR volunteers monitored this lake for about 25 years, ending in 2004. In 2004 the water showed hazy water (~4 ft Secchi), moderate algae (chlorophyll ~8 µg/L), and moderate nutrients (phosphorus ~30 µg/L). After 22 years without samples, these readings describe the lake as it was, not as it is.
| Year | Secchi | Chlorophyll-a | Total phosphorus |
|---|---|---|---|
| 1979 | — | 14.0 µg/L (1) | 20.0 µg/L (1) |
Black Lake - Deep HoleStation 583173
Historical record only — no current water-quality data exists for this lake. 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
Black Lake depth maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Black 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 2401300 · 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.
133surface acres
17max depth feet
2public access points
45.9881, -90.9343latitude, longitude
Access
Public access points
Boat launchBlack Lake Access45.98889, -90.93060Managed by FEDERALTOWN OF ROUND LAKERamp surface: ConcreteADA-accessible feature: NoVerified 2026-07-12
Boat launchBlack Lake Access45.98418, -90.93420Managed by FEDERALTOWN OF ROUND LAKERamp surface: ConcreteADA-accessible feature: NoVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
Largemouth BassMuskyNorthern PikePanfishWalleye
Wisconsin DNR stocking
Fish stocking history
The latest published year is 2023, when 666 fish were recorded across 1 entry.
2023
WalleyeChippewa/St. Croix · Large Fingerling
6666.7 in average
2021
WalleyeMississippi Headwaters · Large Fingerling
6666.7 in average
2019
WalleyeMississippi Headwaters · Large Fingerling
7476.0 in average
2017
WalleyeMississippi Headwaters · Large Fingerling
6793.7 in average
2015
WalleyeMississippi Headwaters · Large Fingerling
7147.7 in average
2013
WalleyeMississippi Headwaters · Large Fingerling
6456.8 in average
Depth FAQ
How deep is Black Lake?
Black Lake is 17 feet deep at its deepest point and averages about 8 feet, according to Wisconsin DNR records.
Is there a free depth map of Black Lake?
Yes. LakeList publishes a free interactive depth contour map of Black 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 Black 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
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