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Siskiwit Lake
Enhanced dataInteractive depth contours
Siskiwit LakeBayfield 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 95% of the lake. Small gaps between recordings are smoothly connected; larger unrecorded areas follow the lake's depth model calibrated to the DNR-documented 13-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 Siskiwit Lake.
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Fishing forecast
Best windows for Siskiwit 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
Siskiwit Lake water temperature today
Modeled surface-temperature estimate built from seasonal climate, lake depth, and live National Weather Service air temperatures near this lake.
76°FPeak summer
Seasonal estimate. Checking current National Weather Service air temperatures…
Warmest water of the year. Fish hold deeper or feed in low light; swimming and watersports are at their best.
Estimates are modeled, not measured. Actual temperatures vary with depth, wind mixing, and recent weather — verify conditions before swimming, boating, or heading onto ice.
Wisconsin DNR water assessment
Public-health advice and impairment listed
The DNR assessment indicates specific public-health advice for this waterbody. Review current official guidance before your trip or eating your catch.
303(d) / impairment recordSpecific public-health advice
Mercury Contaminated Fish TissuePollutants: Mercury
- Status
- 303d Listed
- Public health
- Specific Advice
- Recreation
- Full Body Contact
- Aquatic life
- Not specified
Water is impaired due to one or more pollutants and associated quality impacts.
Review DNR water quality Check consumption advice Source updated 2025-02-10 · LakeList verified 2026-07-12
DNR water check
Water quality quick take
Historical volunteer-monitoring record for this lake.
Last sampled Sep 2022Volunteer monitoring 2005–2022
DNR volunteers monitored this lake for about 17 years, ending in 2022. Its final monitored summers showed hazy water (~4.5 ft Secchi) in 2013, moderate algae (chlorophyll ~6 µg/L) in 2022, and moderate nutrients (phosphorus ~21 µg/L) in 2022. After 4 years without samples, these readings describe the lake as it was, not as it is.
The DNR station record reports activity through 2024, but LakeList holds no readings after 2022 — check the station reports for anything newer.
| Year | Secchi | Chlorophyll-a | Total phosphorus |
|---|---|---|---|
| 2016 | 6.5 ft (1) | 7.0 µg/L (1) | — |
| 2013 | 4.5 ft (2) | — | — |
| 2012 | 3.3 ft (1) | — | — |
| 2011 | 4.5 ft (3) | — | — |
| 2010 | 5.5 ft (1) | — | — |
| 2009 | 5.4 ft (2) | — | — |
Siskiwit Lake - Deep HoleStation 043089
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 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
Siskiwit Lake depth maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Siskiwit 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 2882300 · 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.
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 contextLake-specific late-spring electrofishing with all species collected along one mile and gamefish collected along three additional miles.
DNR documented high smallmouth-bass and walleye catch rates, declining size structure, and small exact samples of large bluegill and pumpkinseed.
- The 2008 comparator column is excluded; only clearly labeled 2024 values are promoted.
- Northern pike, largemouth bass, black crappie and yellow perch are reported only as fewer than five fish, so no exact numeric metrics are created.
- High/low abundance statements and mercury-management context remain narrative rather than numeric population estimates.
Bluegill
6 fishTotal captured · p. 27.5 inchesMinimum captured length · p. 28.5 inchesMaximum captured length · p. 2
Pumpkinseed
8 fishTotal captured · p. 26.7 inchesMinimum captured length · p. 28.7 inchesMaximum captured length · p. 2
Smallmouth bass
50 fishTotal captured · p. 12.6 inchesMinimum captured length · p. 117.5 inchesMaximum captured length · p. 113 fish/mileSurvey CPUE · p. 1
Walleye
180 fishTotal captured · p. 26 inchesMinimum captured length · p. 215.8 inchesMaximum captured length · p. 245 fish/mileSurvey CPUE · p. 2
Siskiwit Lake Fisheries Information Sheet 2024Matched by exact wbic and name county · WBICs 2882300 · verified 2026-07-19Wisconsin DNR fisheries survey report; LakeList operator documented permission to leverage this report with source attribution.
285surface acres
13max depth feet
1public access points
46.7953, -91.1332latitude, longitude
Access
Public access points
Boat launchSiskiwit Lake Access46.79627, -91.12251Managed by TOWNSHIPTOWN OF BELLRamp surface: ConcreteADA-accessible feature: NoVerified 2026-07-12
Nearby
Trip-planning places
No nearby trip-planning places yet
Fishery
Notable species
Smallmouth BassWalleyeNorthern PikeLargemouth BassPanfish
Depth FAQ
How deep is Siskiwit Lake?
Siskiwit Lake is 13 feet deep at its deepest point and averages about 8 feet, according to Wisconsin DNR records.
Is there a free depth map of Siskiwit Lake?
Yes. LakeList publishes a free interactive depth contour map of Siskiwit 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 Siskiwit 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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