2024
WalleyeChippewa/St. Croix · Large Fingerling
3,6217.1 in average
LakeList
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Upper Gresham Lake
Enhanced dataInteractive depth contours
Upper Gresham LakeVilas 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 99% of the lake. Small gaps between recordings are smoothly connected; larger unrecorded areas follow the lake's depth model calibrated to the DNR-documented 32-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 Upper Gresham Lake.
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Fishing
Fishing at Upper Gresham Lake
Fishery
Notable species
PanfishLargemouth BassMuskyWalleyeNorthern Pike
Angler reports · Fishbrain
What anglers catch here
Anglers have logged 34 catches on Upper Gresham Lake via Fishbrain — none in the last 30 days.
Latest reported catch: Jul 17, 2025
Most-reported species
- Largemouth bass
- Yellow perch
- Muskellunge
8 of the 34 logged catches didn’t name a species and aren’t listed above.
Counts reflect reporting activity, not fish populations. Waterbody location is provider-level; exact spots and angler details aren’t shown.
Fishery details for this lakeExplore this area on FishbrainWisconsin DNR stocking
Fish stocking history
The latest published year is 2024, when 3,621 fish were recorded across 1 entry.
2022
WalleyeMississippi Headwaters · Large Fingerling
2,7437.1 in average
2022
WalleyeMississippi Headwaters · Large Fingerling
1,4816.3 in average
2021
MuskellungeUpper Chippewa River · Large Fingerling
21513.9 in average
2020
WalleyeMississippi Headwaters · Large Fingerling
6,3126.7 in average
2019
MuskellungeUpper Wisconsin River · Large Fingerling
31311.2 in average
2018
WalleyeMississippi Headwaters · Large Fingerling
5,4326.9 in average
2017
MuskellungeUpper Wisconsin River · Large Fingerling
22710.9 in average
2016
MuskellungeUpper Wisconsin River · Large Fingerling
36310.3 in average
2016
WalleyeMississippi Headwaters · Large Fingerling
5,3027.8 in average
2015
MuskellungeUpper Wisconsin River · Large Fingerling
37211.8 in average
2014
WalleyeMississippi Headwaters · Large Fingerling
5,4327.4 in average
Showing the 12 most recent records from 16 published entries.
NWS weather
Weather windows
Weather-based planning from the National Weather Service hourly forecast near this lake — not a catch forecast.
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Checking wind, precipitation, and near-term weather windows.
Water temperature
Upper Gresham Lake water temperature today
Modeled surface-temperature estimate built from seasonal climate, lake depth, and live National Weather Service air temperatures near this lake.
69°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 Upper Gresham Lake - Deep Hole.
Sampled Jun 2026Volunteer monitoring since 1990
Clear, low-algae water — summer clarity of 13.5 ft puts it among the clearest quarter of monitored Wisconsin lakes.
Based on July–August 2025 averages across 4 volunteer readings.45Mesotrophic5-yr summer TSI
Moderately clear with moderate nutrients — some algae and plant growth through the season.
Water claritySecchi disk depth
13.5 ftJul–Aug 2025 avg (2 readings)
ClearImproving — up ~42% vs earlier years
Clearer than 78% of 593 monitored Wisconsin lakes with current readings.
AlgaeChlorophyll-a
3 µg/LJul–Aug 2025 avg (2 readings)
LowImproving — down ~33% vs earlier years
NutrientsTotal phosphorus — fuels plant & algae growth
16 µg/LLatest single sample · 2026-05-21
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 | 13.5 ft (2) | 3.0 µg/L (2) | — |
| 2024 | 12.8 ft (2) | 3.0 µg/L (1) | — |
| 2023 | 15.5 ft (1) | 3.0 µg/L (1) | — |
| 2022 | — | 7.5 µg/L (2) | — |
| 2021 | 10.4 ft (1) | 3.0 µg/L (1) | — |
| 2019 | 12.0 ft (1) | 3.0 µg/L (1) | — |
| 2018 | 7.0 ft (1) | 5.0 µg/L (1) | — |
| 2017 | 10.6 ft (2) | 3.3 µg/L (6) | — |
| 2016 | 10.5 ft (1) | 3.3 µg/L (4) | — |
| 2015 | 9.3 ft (3) | 3.8 µg/L (8) | 24.0 µg/L (1) |
Latest individual samples: Secchi 16.7 ft (2025-09-01), chlorophyll-a 4 µg/L (2026-06-17), and total phosphorus 16 µg/L (2026-05-21).
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.
Upper Gresham Lake - Deep HoleStation 643268 · 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
Upper Gresham Lake depth maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Upper Gresham 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 2330800 · 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.
362surface acres
32max depth feet
1public access points
46.0689, -89.7278latitude, longitude
Access
Public access points
Boat launchUpper Gresham Lake Access46.07550, -89.72819Managed by STATE(DNR)TOWN OF BOULDER JUNCTIONRamp surface: Concrete PlankADA-accessible feature: NoVerified 2026-07-12
Nearby
Trip-planning places
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Depth FAQ
How deep is Upper Gresham Lake?
Upper Gresham Lake is 32 feet deep at its deepest point and averages about 13 feet, according to Wisconsin DNR records.
Is there a free depth map of Upper Gresham Lake?
Yes. LakeList publishes a free interactive depth contour map of Upper Gresham 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 Upper Gresham 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
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