LakeList
FavoritesStateWisconsin
Gurno Lake
Enhanced dataInteractive depth contours
Gurno LakeSawyer County, WI
Contours load with map
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 27-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 Gurno Lake.
Start here
Fishing forecast
Best windows for Gurno Lake
Weather-based planning built from the National Weather Service hourly forecast near this lake.
Loading latest forecast…
Checking wind, precipitation, and near-term weather windows.
Water temperature
Gurno 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.
DNR water check
Water quality quick take
From Wisconsin DNR / Citizen Lake Monitoring readings at Gurno Lake (GUR-1).
Last sampled Aug 2024
Through 2024, moderate nutrients in the most recent monitored summers.
Based on July–August 2024 averages across 3 volunteer readings.NutrientsTotal phosphorus — fuels plant & algae growth
26 µg/LJul–Aug 2024 avg (3 readings)
Moderate2021–2024
Moderate phosphorus can support noticeable plant/algae growth.
No recent clarity readings — last measured 2011. No recent algae readings — last measured 2015.
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 |
|---|---|---|---|
| 2024 | — | — | 26.0 µg/L (3) |
| 2023 | — | — | 18.7 µg/L (3) |
| 2022 | — | — | 15.0 µg/L (3) |
| 2021 | — | — | 37.2 µg/L (6) |
| 2015 | — | 7.5 µg/L (2) | — |
| 2014 | 5.7 ft (1) | 10.0 µg/L (1) | — |
| 2013 | 7.4 ft (1) | — | — |
| 2012 | 8.3 ft (1) | 5.0 µg/L (1) | — |
| 2011 | 4.8 ft (3) | 13.0 µg/L (3) | — |
| 2010 | 7.0 ft (2) | 6.5 µg/L (2) | — |
Latest individual samples: Secchi 5.7 ft (2014-07-29), chlorophyll-a 7 µg/L (2015-08-11), and total phosphorus 22 µg/L (2024-08-31).
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.
Gurno Lake (GUR-1)Station 10039028
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
Gurno Lake depth maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Gurno 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 2448000 · 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.
Fishbrain community activity
Recent catch activity
Aggregated public catch activity matched to Gurno Lake. Exact catch locations and angler details are not shown.
Most reported species in this extract
Largemouth bass1
Catch analytics
Seasonal fish catch patterns
Pick a species to see when anglers reported it, compare against all fish by month, then scan year-by-year catch volume.
Largemouth bass by monthMonthly reports tagged as Largemouth bass.
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
All fish by monthTotal public catch reports across every listed species.
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Yearly catch viewYear-by-year public catch volume.
No yearly catch aggregates yet.
Catch counts are community reports, not a population survey or a guarantee of current fishing conditions.
View source on Fishbrain76surface acres
27max depth feet
0public access points
45.9104, -91.3720latitude, longitude
Access
Public access points
No mapped access points yet
LakeList has not matched a public launch, park, or shoreline access point for this lake yet.
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
Largemouth BassNorthern PikeMuskyPanfishWalleye
Wisconsin DNR stocking
Fish stocking history
The latest published year is 2025, when 700 fish were recorded across 1 entry.
2025
WalleyeChippewa/St. Croix · Large Fingerling
7007.1 in average
2022
WalleyeMississippi Headwaters · Large Fingerling
8607.4 in average
2021
WalleyeMississippi Headwaters · Large Fingerling
8607.1 in average
2018
WalleyeMississippi Headwaters · Large Fingerling
2157.3 in average
2014
WalleyeLac Courte Oreilles · Large Fingerling
3328.1 in average
2014
WalleyeLac Courte Oreilles · Small Fingerling
2,9831.6 in average
2012
WalleyeLac Courte Oreilles · Small Fingerling
3,0002.0 in average
2011
WalleyeLac Courte Oreilles · Large Fingerling
5937.8 in average
2010
WalleyeMississippi Headwaters · Small Fingerling
4,3451.8 in average
2010
WalleyeLac Courte Oreilles · Small Fingerling
4,3451.7 in average
Depth FAQ
How deep is Gurno Lake?
Gurno Lake is 27 feet deep at its deepest point and averages about 13 feet, according to Wisconsin DNR records.
Is there a free depth map of Gurno Lake?
Yes. LakeList publishes a free interactive depth contour map of Gurno Lake at a typical 5-foot interval, with an optional 3D underwater view, derived from LakeList depth model survey data.
Where does the Gurno 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 2026-07-12
Keep exploring