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Spider Lake
Enhanced dataInteractive depth contours
Spider LakeSawyer 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 58% of the lake. Small gaps between recordings are smoothly connected; larger unrecorded areas follow the lake's depth model calibrated to the DNR-documented 64-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 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 - Little Spider Basin.
Sampled Jul 2026Volunteer monitoring since 1989
Clear water — summer clarity of 10.1 ft puts it among the clearest quarter of monitored Wisconsin lakes.
Based on July–August 2025 averages across 3 volunteer readings.Water claritySecchi disk depth
10.1 ftJul–Aug 2025 avg (3 readings)
ClearImproving — up ~19% vs earlier years
Clearer than 82% of 596 monitored Wisconsin lakes with current readings.
No recent algae readings — last measured 2001. No recent nutrient readings — last measured 2001.
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 |
|---|---|---|---|
| 2026 | 14.3 ft (1) | — | — |
| 2025 | 10.1 ft (3) | — | — |
| 2024 | 12.1 ft (2) | — | — |
| 2023 | 10.1 ft (3) | — | — |
| 2022 | 10.2 ft (4) | — | — |
| 2021 | 10.4 ft (3) | — | — |
| 2020 | 8.6 ft (4) | — | — |
| 2019 | 9.0 ft (4) | — | — |
| 2018 | 9.6 ft (2) | — | — |
| 2017 | 10.3 ft (2) | — | — |
Latest individual samples: Secchi 14.3 ft (2026-07-09), chlorophyll-a 3 µg/L (2001-09-03), and total phosphorus 10 µg/L (2001-09-03).
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 - Little Spider BasinStation 583048
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 maps2 converted map sheetsFishing 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
2 converted map sheets. 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 2435700 · 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.
Official fishing intelligence
Fishing reports and forecasts
LakeList matched these official resources by exact lake name and county. Report text stays with the publisher.
Forecasts describe DNR survey findings and expected opportunities; they are not real-time catch reports or a guarantee of fishing conditions.
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 contextCombined Spider Chain assessment. Netting covers Big Spider, Little Spider, Clear, Fawn and North lakes; panfish/bass electrofishing excludes North Lake; walleye density estimates remain split into North Lake and the rest of the chain.
DNR documented declining muskellunge abundance, separate low-density walleye estimates, increasing small northern pike, modest panfish size and more largemouth than smallmouth bass.
- The source is chain-wide and prints no WBIC; no metric is represented as Spider-Lake-only.
- Extended netting likely saturated the system and reduced catch rates; CPUE retains that caveat through exact scope.
- North Lake is excluded from bass/panfish metrics and remains separate in walleye density metrics.
- No future muskellunge estimate is invented from the report's planned 2025 work.
Black crappie
12 fish at least 5 inches/net-nightCPUE for fish at least 5 inches · p. 227 percentShare at least 8 inches · p. 21 percentShare at least 10 inches · p. 2
Largemouth bass
20 fish at least 8 inches/mileCPUE for fish at least 8 inches · p. 343 percentShare at least 12 inches · p. 313 percentShare at least 15 inches · p. 3
Northern pike
2.5 fish at least 14 inches/net-nightCPUE for fish at least 14 inches · p. 216 percentShare at least 21 inches · p. 21 percentShare at least 28 inches · p. 2
Smallmouth bass
4 fish at least 7 inches/mileCPUE for fish at least 7 inches · p. 326 percentShare at least 14 inches · p. 36 percentShare at least 17 inches · p. 3
Walleye
3.6 fish at least 10 inches/net-nightCPUE for fish at least 10 inches · p. 240 percentShare at least 20 inches · p. 20.2 adult fish/acreNorth Lake adult density estimate · p. 50.1 adult fish/acreNorth Lake density plus-or-minus amount · p. 5
Yellow perch
9 fish at least 5 inches/net-nightCPUE for fish at least 5 inches · p. 319 percentShare at least 8 inches · p. 32 percentShare at least 10 inches · p. 3
2024 Spring Fisheries Survey Summary: Spider Chain, Sawyer CountyMatched by exact queue target wbic name county with explicit combined spider chain source scope · WBICs · verified 2026-07-19Wisconsin DNR fisheries survey report; LakeList operator documented permission to leverage this report with source attribution.
1,194surface acres
64max depth feet
1public access points
46.0974, -91.2233latitude, longitude
Access
Public access points
Boat launchSpider Lake Access46.07478, -91.23803Managed by TOWNSHIPTOWN OF SPIDER LAKERamp surface: Concrete PlankADA-accessible feature: NoVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
MuskyLargemouth BassWalleyePanfishSmallmouth Bass
Wisconsin DNR stocking
Fish stocking history
The latest published year is 2025, when 15,132 fish were recorded across 1 entry.
2025
WalleyeUnspecified · Large Fingerling
15,132Length not listed
2024
WalleyeUnspecified · Large Fingerling
11,000Length not listed
2021
WalleyeMississippi Headwaters · Large Fingerling
6,5696.5 in average
2021
WalleyeUnspecified · Large Fingerling
13,9406.0 in average
2019
WalleyeMississippi Headwaters · Large Fingerling
5,9726.4 in average
2015
WalleyeMississippi Headwaters · Large Fingerling
5,9717.8 in average
2013
WalleyeUnspecified · Large Fingerling
8,0007.0 in average
2012
WalleyeUnspecified · Large Fingerling
4,0007.2 in average
2011
WalleyeUnspecified · Large Fingerling
4,0007.2 in average
Depth FAQ
How deep is Spider Lake?
Spider Lake is 64 feet deep at its deepest point and averages about 14 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 2026-05-25
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