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Krohns Lake
Enhanced dataHistorical depth chart
Krohns LakeKewaunee 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
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Fishing forecast
Best windows for Krohns 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
Krohns 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 Krohns Lake - Middle.
Last sampled Oct 2025Volunteer monitoring since 2004
Through 2025, somewhat hazy but low-algae water — summer clarity of 6.5 ft is lower than most monitored Wisconsin lakes.
Based on July–August volunteer averages from 2023–2025; each value shows its own year.Water claritySecchi disk depth
6.5 ftJul–Aug 2025 avg (3 readings)
Slight hazeStable since 2017
Clearer than 37% of 597 monitored Wisconsin lakes with current readings.
AlgaeChlorophyll-a
4 µg/LJul–Aug 2023 avg (2 readings)
Low2016–2023
No recent nutrient readings — last measured 2016.
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 | 6.5 ft (3) | — | — |
| 2024 | 11.0 ft (4) | — | — |
| 2023 | 7.5 ft (7) | 4.0 µg/L (2) | — |
| 2021 | 9.0 ft (1) | — | — |
| 2020 | 6.9 ft (5) | — | — |
| 2019 | 7.1 ft (4) | — | — |
| 2018 | 7.4 ft (3) | — | — |
| 2017 | 5.3 ft (8) | 2.3 µg/L (3) | — |
| 2016 | 7.3 ft (7) | 3.0 µg/L (2) | 12.0 µg/L (1) |
| 2015 | 7.3 ft (6) | — | — |
Latest individual samples: Secchi 7 ft (2025-10-18), chlorophyll-a 3 µg/L (2023-09-05), and total phosphorus 12 µg/L (2016-07-26).
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.
Krohns Lake - MiddleStation 313030
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
Krohns Lake depth maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Krohns 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 94700 · 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 2021 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 contextThe 2021 late-spring electrofishing survey sampled Krohns Lake's entire 0.88-mile shoreline to assess adult bass and panfish populations.
The 2021 late-spring electrofishing survey sampled Krohns Lake's entire 0.88-mile shoreline to assess adult bass and panfish populations.
- Historical fisheries snapshot; not current fishing regulations or navigation guidance.
- Only metrics explicitly supported by the cited source page were promoted.
- Population estimates, relative-abundance indices, gear limitations and size thresholds retain source scope.
Bluegill
26 fishTotal catch · p. 229.5 fish/mileElectrofishing CPUE · p. 23.5 inchesMinimum observed length · p. 28.3 inchesMaximum observed length · p. 2
Green Sunfish
2 fishIncidental survey catch · p. 2
Largemouth Bass
36 fishTotal catch · p. 140.9 fish/mileElectrofishing CPUE · p. 14.4 inchesMinimum observed length · p. 115 inchesMaximum observed length · p. 1
Rock Bass
1 fishIncidental survey catch · p. 2
White Sucker
2 fishIncidental survey catch · p. 2
Krohns Lake spring shocking survey, 2021Matched by exact normalized name county · WBICs · verified 2026-07-19Wisconsin DNR fisheries survey 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 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.
19surface acres
38max depth feet
1public access points
44.5832, -87.4890latitude, longitude
Access
Public access points
Boat launchKrohns Lake County Access44.58503, -87.48569Managed by COUNTYTOWN OF PIERCERamp surface: ConcreteADA-accessible feature: YesVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
PanfishLargemouth BassTrout
Depth FAQ
How deep is Krohns Lake?
Krohns Lake is 38 feet deep at its deepest point and averages about 21 feet, according to Wisconsin DNR records.
Is there a free depth map of Krohns 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 Krohns 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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