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Clark Lake
Enhanced dataInteractive depth contours
Clark LakeDoor County, WI
Contours load with map Access
Interactive depth contours5-foot typical interval · Modeled depth estimate · Not a survey · Not for navigation
Source: LakeList depth modelmedium confidence · QA passed · Select a contour to inspect its mapped depthModeled depth estimate: contours computed from the lake's shoreline shape and its documented 25-ft maximum depth (depth grows with distance from shore, calibrated to the documented mean depth where available). This is a smooth mathematical model, not a survey - real holes, bars, and drop-offs will differ. Community sonar (C-MAP Genesis) overlays where recorded. Not for navigation.LakeList assistant
Plan your lake day
Fishing spots, food, lodging, marinas, and rentals around Clark Lake.
Start here
Fishing forecast
Best windows for Clark 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
Clark Lake water temperature today
Modeled surface-temperature estimate built from seasonal climate, lake depth, and live National Weather Service air temperatures near this lake.
75°FPeak summer
Seasonal estimate. Checking current National Weather Service air temperatures…
Warmest water of the year. Fish hold deeper or feed in low light; swimming and watersports are at their best.
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 Clark Lake - Deepest Point.
Sampled Aug 2025Volunteer monitoring since 1988
Clear, low-algae water — summer clarity of 12.9 ft is clearer than most monitored Wisconsin lakes.
Based on July–August 2025 averages across 6 volunteer readings.38Oligotrophic5-yr summer TSI
Very clear, low-nutrient water — often deep, with limited plant growth.
Water claritySecchi disk depth
12.9 ftJul–Aug 2025 avg (3 readings)
ClearStable since 2018
Clearer than 64% of 596 monitored Wisconsin lakes with current readings.
AlgaeChlorophyll-a
1.7 µg/LJul–Aug 2025 avg (3 readings)
Very lowWorsening — up ~44% vs earlier years
NutrientsTotal phosphorus — fuels plant & algae growth
11 µg/LLatest single sample · 2023-06-19
LowLow phosphorus means 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 | 12.9 ft (3) | 1.7 µg/L (3) | — |
| 2024 | 11.4 ft (3) | 2.0 µg/L (3) | — |
| 2023 | 13.5 ft (3) | 4.0 µg/L (3) | — |
| 2022 | 10.5 ft (3) | 2.0 µg/L (3) | — |
| 2021 | 10.3 ft (2) | 2.0 µg/L (2) | — |
| 2020 | 15.8 ft (3) | 1.3 µg/L (3) | 11.0 µg/L (1) |
| 2019 | 12.3 ft (3) | 2.3 µg/L (3) | — |
| 2018 | 10.6 ft (4) | 2.0 µg/L (2) | — |
| 2017 | 10.5 ft (2) | 2.0 µg/L (2) | — |
| 2016 | 14.9 ft (3) | 1.0 µg/L (3) | — |
Latest individual samples: Secchi 11 ft (2025-08-15), chlorophyll-a 2 µg/L (2025-08-15), and total phosphorus 11 µg/L (2023-06-19).
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.
Clark Lake - Deepest PointStation 153112 · 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 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
Clark Lake depth maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Clark 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 97700 · 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 2013 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 contextClark Lake (WBIC 97700) only
Human-reviewed multi-gear catch, CPUE, length and population metrics for exact Clark Lake.
- Historical survey snapshot; not current regulations or navigation guidance.
- Stocking histories, regulations, recommendations, comparison-water values and unsupported chart-only values were excluded.
- Lauderdale values retain Green/Middle/Mill chain-combined scope and are not represented as a single basin.
All fish
44 fish2013 early electrofishing catch count · p. 1635.3 fish/hour2013 early electrofishing cpue hour · p. 1616.9 fish/mile2013 early electrofishing cpue · p. 1682 fish2013 fall catch count · p. 19
Bluegill
199 fish2013 fyke net catch count · p. 63.6 fish/net-night2013 fyke net cpue · p. 6159 mm2013 fyke net mean length · p. 691 mm2013 fyke net min length · p. 6
Bluntnose Minnow
2 fish2013 late spring catch count · p. 181 fish/hour2013 late spring cpue hour · p. 180.8 fish/mile2013 late spring cpue · p. 18
Bowfin
48 fish2013 fyke net catch count · p. 60.9 fish/net-night2013 fyke net cpue · p. 6
Common Carp
3 fish2013 fall catch count · p. 192.1 fish/hour2013 fall cpue hour · p. 191.2 fish/mile2013 fall cpue · p. 19
Common Shiner
1 fish2013 late spring catch count · p. 180.5 fish/hour2013 late spring cpue hour · p. 180.4 fish/mile2013 late spring cpue · p. 18
Largemouth Bass
7 fish2013 fyke net catch count · p. 60.1 fish/net-night2013 fyke net cpue · p. 6411 mm2013 fyke net mean length · p. 6256 mm2013 fyke net min length · p. 6
Longnose Sucker
114 fish2013 fyke net catch count · p. 62 fish/net-night2013 fyke net cpue · p. 6
Northern Pike
12 fish2013 fyke net catch count · p. 60.2 fish/net-night2013 fyke net cpue · p. 6624 mm2013 fyke net mean length · p. 6440 mm2013 fyke net min length · p. 6
Pumpkinseed
1 fish2013 fyke net catch count · p. 60 fish/net-night2013 fyke net cpue · p. 6145 mm2013 fyke net mean length · p. 6145 mm2013 fyke net min length · p. 6
Rock Bass
208 fish2013 fyke net catch count · p. 63.7 fish/net-night2013 fyke net cpue · p. 6169 mm2013 fyke net mean length · p. 695 mm2013 fyke net min length · p. 6
Smallmouth Bass
11 fish2013 fyke net catch count · p. 60.2 fish/net-night2013 fyke net cpue · p. 6464 mm2013 fyke net mean length · p. 6426 mm2013 fyke net min length · p. 6
Walleye
125 fish2013 fyke net catch count · p. 62.2 fish/net-night2013 fyke net cpue · p. 6411 mm2013 fyke net mean length · p. 6137 mm2013 fyke net min length · p. 6
White Sucker
73 fish2013 fyke net catch count · p. 61.3 fish/net-night2013 fyke net cpue · p. 61 fish2013 late spring catch count · p. 180.5 fish/hour2013 late spring cpue hour · p. 18
Yellow Perch
7 fish2013 fyke net catch count · p. 60.1 fish/net-night2013 fyke net cpue · p. 6179 mm2013 fyke net mean length · p. 6149 mm2013 fyke net min length · p. 6
Fishery survey of Clark Lake, 2013Matched by exact wbic name county and lakelist uuid · WBICs 97700 · verified 2026-07-21Wisconsin DNR fisheries report; LakeList operator documented permission to leverage this public report with source attribution.
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: June 20, 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. No minimum length limit and the daily bag limit is 5.
Paddlefish
Season Dates: Closed. No fishing allowed.
Panfish
Season Dates: Open All Year. No minimum length limit and the daily bag limit is 10.
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.
865surface acres
25max depth feet
1public access points
44.9376, -87.2057latitude, longitude
Access
Public access points
Boat launchClark Lake Access44.93713, -87.21245Managed by TOWNSHIPTOWN OF JACKSONPORTRamp surface: ConcreteADA-accessible feature: YesVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
Northern PikePanfishSmallmouth BassWalleyeLargemouth BassTrout
Depth FAQ
How deep is Clark Lake?
Clark Lake is 25 feet deep at its deepest point and averages about 7 feet, according to Wisconsin DNR records.
Is there a free depth map of Clark Lake?
Yes. LakeList publishes a free interactive depth contour map of Clark Lake at a typical 5-foot interval, with an optional 3D underwater view, derived from LakeList depth model survey data.
Where does the Clark Lake depth map come from?
The interactive depth contours are derived from LakeList depth model. Each contour set passes a visual QA review against the source document before it is published. The depths are a modeled estimate calibrated to the lake's documented maximum depth - not a survey, and 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