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Patten Lake
Enhanced dataInteractive depth contours
Patten LakeFlorence 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 98% of the lake. Small gaps between recordings are smoothly connected; larger unrecorded areas follow the lake's depth model calibrated to the DNR-documented 52-ft maximum depth. More accurate than a pure model, but still an estimate. Not for navigation.LakeList assistant
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Fishing spots, food, lodging, marinas, and rentals around Patten Lake.
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Fishing forecast
Best windows for Patten 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
Patten Lake water temperature today
Modeled surface-temperature estimate built from seasonal climate, lake depth, and live National Weather Service air temperatures near this lake.
71°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 Patten Lake - East Basin - Deep Hole.
Sampled Aug 2025
Clear, low-algae water — summer clarity of 11.8 ft is clearer than most monitored Wisconsin lakes.
Based on July–August 2025 averages across 6 volunteer readings.41Mesotrophic5-yr summer TSI
Moderately clear with moderate nutrients — a typical profile for good swimming lakes.
Water claritySecchi disk depth
11.8 ftJul–Aug 2025 avg (3 readings)
ClearStable since 2015
Clearer than 61% of 596 monitored Wisconsin lakes with current readings.
AlgaeChlorophyll-a
2.7 µg/LJul–Aug 2025 avg (3 readings)
LowWorsening — up ~36% vs earlier years
NutrientsTotal phosphorus — fuels plant & algae growth
16 µg/LLatest single sample · 2025-07-15
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 | 11.8 ft (3) | 2.7 µg/L (3) | 16.0 µg/L (1) |
| 2024 | 10.5 ft (2) | 4.0 µg/L (2) | 15.0 µg/L (1) |
| 2023 | — | 1.5 µg/L (2) | — |
| 2021 | — | 2.0 µg/L (2) | — |
| 2020 | — | 2.0 µg/L (1) | — |
| 2019 | 11.3 ft (2) | 2.0 µg/L (2) | — |
| 2018 | 14.5 ft (1) | — | — |
| 2017 | 8.3 ft (2) | 6.5 µg/L (2) | — |
| 2016 | 12.3 ft (2) | 1.5 µg/L (2) | — |
| 2015 | 8.8 ft (2) | 4.0 µg/L (2) | — |
Latest individual samples: Secchi 10.3 ft (2025-08-29), chlorophyll-a 5 µg/L (2025-08-29), and total phosphorus 16 µg/L (2025-07-15).
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.
Patten Lake - East Basin - Deep HoleStation 193012 · 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
Patten Lake depth maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Patten 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 653700 · 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 2024 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 contextLake-specific 2024 comprehensive survey spanning walleye and pike mark-recapture, whole-shoreline bass electrofishing, panfish netting, recruitment monitoring and targeted removals.
DNR estimated 575 adult walleye and 467 adult northern pike, documented desirable bass size structure, low bluegill and crappie abundance, and continued bullhead/pike removals under the walleye rehabilitation project.
- The survey-effort table says it summarizes 2023 despite 2024 dates and report scope; the stray year label is not promoted.
- Historical comparison columns and graph-only annual recruitment values are excluded.
- Standard and pre-early-spring black-crappie CPUE retain separate temperature/effort scopes rather than being merged.
Black bullhead
1.8 fish/net-nightSurvey CPUE · p. 81,052 fishFish captured and removed · p. 9534 fishFish measured · p. 972.7 percentShare at least 10 inches long · p. 9
Black crappie
0.3 fish/net-nightStandard spring CPUE · p. 72.8 fish/net-nightPre-early-spring CPUE · p. 7139 fishFish measured · p. 792 fishFish shorter than 5 inches · p. 7
Bluegill
14.2 fish/net-nightSurvey CPUE · p. 6340 fishTotal captured · p. 652.1 percentRelative stock density at 6 inches · p. 638.5 percentRelative stock density at 7 inches · p. 6
Largemouth bass
26 fishAdults captured · p. 56.2 adult fish/mileAdult CPUE · p. 588.5 percentRelative stock density at 12 inches · p. 561.5 percentRelative stock density at 14 inches · p. 5
Northern pike
146 fishFish captured in marking period · p. 3142 fishAdults marked · p. 3134 fishFish captured in recapture period · p. 3133 fishAdults captured in recapture period · p. 3
Pumpkinseed
0.8 fish/net-nightSurvey CPUE · p. 9
Rock bass
3.3 fish/net-nightSurvey CPUE · p. 9
Smallmouth bass
44 fishAdults captured · p. 410.5 adult fish/mileAdult CPUE · p. 488.6 percentRelative stock density at 11 inches · p. 461.4 percentRelative stock density at 14 inches · p. 4
Walleye
256 fishWalleye captured in marking sample · p. 2255 fishAdults marked · p. 2124 fishAdults captured in recapture run · p. 254 fishMarked adults recaptured · p. 2
White sucker
0.6 fish/net-nightSurvey CPUE · p. 9
Yellow perch
2 fishTotal captured · p. 70 fish/net-nightSurvey CPUE · p. 7
2024 Comprehensive Survey Report: Patten Lake, Florence CountyMatched by exact wbic and name county · WBICs 653700 · verified 2026-07-19Wisconsin DNR fisheries survey report; LakeList operator documented permission to leverage this 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 1 hook, bait, or lure per angler, and 3 hooks, baits, or lures maximum per boat.
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 is 15", but walleye, sauger, and hybrids from 20" to 24" may not be kept, and only 1 fish over 24" is allowed. The daily bag limit is 3.
Regulations can change. The official DNR page controls; verify seasons, boundaries, bag limits, and emergency rules before fishing.
254surface acres
52max depth feet
1public access points
45.8544, -88.4217latitude, longitude
Access
Public access points
Boat launchPatten Lake Access45.85672, -88.42778Managed by COUNTYTOWN OF FLORENCERamp surface: ConcreteADA-accessible feature: YesVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
PanfishLargemouth BassWalleyeTrout
Depth FAQ
How deep is Patten Lake?
Patten Lake is 52 feet deep at its deepest point and averages about 18 feet, according to Wisconsin DNR records.
Is there a free depth map of Patten Lake?
Yes. LakeList publishes a free interactive depth contour map of Patten 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 Patten 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