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Hartlaub Lake
Enhanced dataHistorical depth chart
Hartlaub LakeManitowoc County, WI
Historical source depth chart available1 converted source DNR map sheet can be panned and zoomed in the browser. Interactive contours stay hidden until visual QA passes. Historical survey — not for navigation.
View browser depth chartLakeList assistant
Plan your lake day
Fishing spots, food, lodging, marinas, and rentals around Hartlaub Lake.
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Fishing forecast
Best windows for Hartlaub 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
Hartlaub Lake water temperature today
Modeled surface-temperature estimate built from seasonal climate, lake depth, and live National Weather Service air temperatures near this lake.
73°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
Impaired waterbody listed
The DNR lists this waterbody as impaired. This notice is not itself a closure; review the official assessment and current guidance before your trip.
303(d) / impairment recordRecreation restrictions noted
Impairment Unknown, Excess Algal GrowthPollutants: Total Phosphorus
- Status
- TMDL Approved
- Public health
- General Advice
- Recreation
- Recreational Restrictions
- 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 2026-03-25 · LakeList verified 2026-07-12
DNR water check
Water quality quick take
Historical volunteer-monitoring record for this lake.
Last sampled date unknown
Individual readings are not retained for this lake — the index below is what the monitoring record summarizes.
62 five-year summer trophic state index · Eutrophic. Nutrient-rich, greener water — more algae and plant growth, common in shallower lakes.
Listed as impaired on the DNR/EPA water-condition assessment — see the notice on this page for details.Hartlaub Lake - Deep HoleStation 363229 · TSI based on chlorophyll
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 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
Hartlaub Lake depth maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Hartlaub 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 67200 · 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 · 2026–2027 season
Lake-specific fishing regulations
Rule text published by the DNR for this waterbody, cached by WBIC and verified 2026-07-12.
All species
Catch and release fishing for largemouth and smallmouth bass is open year round unless otherwise noted. Motor Trolling is allowed with up to 3 hooks, baits, or lures, per angler.
Catfish
Season Dates: Open All Year. No minimum length limit and the daily bag limit is 10.
Cisco and whitefish
Season Dates: Open All Year. No minimum length limit and the daily bag limit is 10.
Lake sturgeon
Season Dates: Closed. No fishing allowed.
Largemouth and smallmouth bass
Season Dates: May 2, 2026 to March 7, 2027. The minimum length limit is 14" and the daily bag limit is 5.
Muskellunge and hybrids
Season Dates: May 2, 2026 to December 31, 2026 on open water. The minimum length limit is 40" and the daily bag limit is 1.
Northern pike
Season Dates: May 2, 2026 to March 7, 2027. The minimum length limit is 26" and the daily bag limit is 2.
Paddlefish
Season Dates: Closed. No fishing allowed.
Panfish
Season Dates: Open All Year. No minimum length limit and the daily bag limit is 25.
Rock, yellow, and white bass
Season Dates: Open All Year. No minimum length limit and the daily bag limit is unlimited.
Rough fish
Season Dates: Open All Year. No minimum length limit and the daily bag limit is unlimited.
Shovelnose sturgeon
Season Dates: Closed. No fishing allowed.
Trout and salmon
See Trout regulations layer.
Urban waters gamefish
This waterbody is not considered an urban water, Urban Waters Gamefish regulations do not apply.
Walleye, sauger, and hybrids
Season Dates: May 2, 2026 to March 7, 2027. The minimum length limit is 15" and the daily bag limit is 3.
Regulations can change. The official DNR page controls; verify seasons, boundaries, bag limits, and emergency rules before fishing.
37surface acres
60max depth feet
1public access points
44.0455, -87.7393latitude, longitude
Access
Public access points
Boat launchHartlaub Lake Boat Ramp44.04774, -87.73923Managed by COUNTYTOWN OF NEWTONRamp surface: PavedADA-accessible feature: NoVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
Largemouth BassPanfishNorthern Pike
Wisconsin DNR stocking
Fish stocking history
The latest published year is 2024, when 187 fish were recorded across 1 entry.
2024
WalleyeLake Michigan · Large Fingerling
1876.6 in average
2019
WalleyeUnspecified · Large Fingerling
3008.0 in average
2019
WalleyeRock-Fox · Small Fingerling
1,2251.7 in average
Depth FAQ
How deep is Hartlaub Lake?
Hartlaub Lake is 60 feet deep at its deepest point and averages about 20 feet, according to Wisconsin DNR records.
Is there a free depth map of Hartlaub Lake?
Yes. 1 scanned Wisconsin DNR lake survey map sheet is free to view and zoom on LakeList. These historical surveys are not for navigation.
Where does the Hartlaub Lake depth map come from?
The map sheets are converted from official Wisconsin DNR lake survey documents, with the source URL, checksum, and retrieval date retained for every sheet. Historical surveys are 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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