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Spider Lake
Enhanced dataInteractive depth contours
Spider LakeVilas County, WI
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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 40% of the lake. Small gaps between recordings are smoothly connected; larger unrecorded areas follow the lake's depth model calibrated to the DNR-documented 43-ft maximum depth. More accurate than a pure model, but still an estimate. Not for navigation.LakeList assistant
Plan your lake day
Fishing spots, food, lodging, marinas, and rentals around Spider Lake.
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Fishing forecast
Best windows for Spider 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
Spider 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 Spider Lake - Deep Hole.
Sampled Sep 2025Volunteer monitoring since 2006
Clear, low-algae water — summer clarity of 10.7 ft is clearer than most monitored Wisconsin lakes.
Based on July–August 2024 averages across 3 volunteer readings.43Mesotrophic5-yr summer TSI
Moderately clear with moderate nutrients — a typical profile for good swimming lakes.
Water claritySecchi disk depth
10.7 ftJul–Aug 2024 avg (3 readings)
ClearStable since 2015
Clearer than 69% of 596 monitored Wisconsin lakes with current readings.
AlgaeChlorophyll-a
4 µg/LLatest single sample · 2025-09-01
Low2023–2025
NutrientsTotal phosphorus — fuels plant & algae growth
11 µg/LLatest single sample · 2025-09-01
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 | — | 2.0 µg/L (1) | 13.0 µg/L (1) |
| 2024 | 10.7 ft (3) | 4.0 µg/L (1) | 15.0 µg/L (1) |
| 2023 | 11.5 ft (1) | 5.0 µg/L (1) | — |
| 2022 | 8.8 ft (4) | — | — |
| 2019 | 11.5 ft (2) | — | — |
| 2018 | 11.5 ft (2) | — | — |
| 2017 | 11.3 ft (2) | — | — |
| 2016 | 11.0 ft (2) | — | — |
| 2015 | 11.0 ft (2) | — | — |
| 2013 | 11.6 ft (2) | — | — |
Latest individual samples: Secchi 12 ft (2024-09-19), chlorophyll-a 4 µg/L (2025-09-01), and total phosphorus 11 µg/L (2025-09-01).
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.
Spider Lake - Deep HoleStation 643261 · 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 sheetFishing 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
Spider Lake depth maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Spider 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 2329300 · 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.
278surface acres
43max depth feet
0public access points
46.1214, -89.8210latitude, 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
MuskyNorthern PikePanfishWalleyeLargemouth BassSmallmouth Bass
Wisconsin DNR stocking
Fish stocking history
The latest published year is 2022, when 828 fish were recorded across 1 entry.
2022
MuskellungeUpper Chippewa River · Large Fingerling
82812.8 in average
2018
MuskellungeUpper Wisconsin River · Large Fingerling
39911.6 in average
2016
MuskellungeUpper Wisconsin River · Large Fingerling
43811.1 in average
2016
WalleyeUnspecified · Large Fingerling
2,7207.0 in average
2014
MuskellungeUpper Wisconsin River · Large Fingerling
40010.4 in average
2012
MuskellungeUpper Wisconsin River · Large Fingerling
40010.2 in average
2010
MuskellungeUpper Wisconsin River · Large Fingerling
24012.5 in average
Depth FAQ
How deep is Spider Lake?
Spider Lake is 43 feet deep at its deepest point and averages about 20 feet, according to Wisconsin DNR records.
Is there a free depth map of Spider Lake?
Yes. LakeList publishes a free interactive depth contour map of Spider 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 Spider 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 Pagesname, coordinates, county, source identifiers
LakeList record updated 2026-07-12
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