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Prong Lake
Enhanced dataHistorical depth chart
Prong LakeVilas County, WI
Historical source depth chart available3 converted source DNR map sheets can be panned and zoomed in the browser. Interactive contours stay hidden until visual QA passes. Historical survey — not for navigation.
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Fishing spots, food, lodging, marinas, and rentals around Prong Lake.
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Fishing forecast
Best windows for Prong 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
Prong 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
Historical volunteer-monitoring record for this lake.
Last sampled Sep 2024Volunteer monitoring 1978–2024
DNR volunteers monitored this lake for about 46 years, ending in 2024. In 1981 the water showed clear water (~15.1 ft Secchi), moderate algae (chlorophyll ~5.5 µg/L), and high nutrients (phosphorus ~105 µg/L). After 2 years without samples, these readings describe the lake as it was, not as it is.
| Year | Secchi | Chlorophyll-a | Total phosphorus |
|---|---|---|---|
| 1981 | 15.1 ft (3) | 5.5 µg/L (4) | 105.0 µg/L (2) |
| 1980 | 13.5 ft (3) | 6.5 µg/L (4) | 60.0 µg/L (3) |
| 1979 | 15.1 ft (2) | 5.0 µg/L (1) | — |
| 1978 | 16.4 ft (1) | 11.0 µg/L (1) | — |
Prong Lake - Deep HoleStation 643045
Historical record only — no current water-quality data exists for this lake. 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 maps3 converted map sheetsView 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
Prong Lake depth maps
3 converted map sheets · 1 map-aligned. These historical surveys are not for navigation.
Navigable depth map
Prong 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 1013200 · map alignment passed · 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.
31surface acres
50max depth feet
1public access points
45.9218, -89.5979latitude, longitude
Access
Public access points
Boat launchProng Lake Carry-in45.91999, -89.59972Managed by State(Dnr)TOWN OF ARBOR VITAERamp surface: UnimprovedLanding type: CARRY-INADA-accessible feature: NoVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
PanfishLargemouth Bass
Depth FAQ
How deep is Prong Lake?
Prong Lake is 50 feet deep at its deepest point, according to Wisconsin DNR records.
Is there a free depth map of Prong Lake?
Yes. 3 scanned Wisconsin DNR lake survey map sheets are free to view and zoom on LakeList. These historical surveys are not for navigation.
Where does the Prong 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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