LakeList
FavoritesStateWisconsin
Crystal Lake
Enhanced dataInteractive depth contours
Crystal LakeIron County, WI
Contours load with map
Interactive depth contours5-foot typical interval · Modeled depth estimate · Not a survey · Not for navigation
Source: LakeList depth modelmedium confidence · QA passed · Select a contour to inspect its mapped depthModeled depth estimate: contours computed from the lake's shoreline shape and its documented 46-ft maximum depth (depth grows with distance from shore, calibrated to the documented mean depth where available). This is a smooth mathematical model, not a survey - real holes, bars, and drop-offs will differ. Community sonar (C-MAP Genesis) overlays where recorded. Not for navigation.LakeList assistant
Plan your lake day
Fishing spots, food, lodging, marinas, and rentals around Crystal Lake.
Start here
Fishing forecast
Best windows for Crystal Lake
Weather-based planning built from the National Weather Service hourly forecast near this lake.
Loading latest forecast…
Checking wind, precipitation, and near-term weather windows.
Water temperature
Crystal 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 2012Volunteer monitoring 2006–2012
DNR volunteers monitored this lake for about 6 years, ending in 2012. In 2012 the water showed clear water (~12.9 ft Secchi). After 14 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 2012 — check the station reports for anything newer.
| Year | Secchi | Chlorophyll-a | Total phosphorus |
|---|---|---|---|
| 2012 | 12.9 ft (4) | — | — |
| 2011 | 15.0 ft (1) | — | — |
| 2009 | 16.6 ft (5) | — | — |
| 2008 | 16.4 ft (5) | — | — |
| 2007 | 14.0 ft (6) | — | — |
| 2006 | 14.5 ft (6) | — | — |
Crystal Lake - Deep HoleStation 263181
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
Crystal Lake depth maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Crystal 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 1842500 · 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.
90surface acres
46max depth feet
0public access points
46.1651, -90.1114latitude, 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
Largemouth BassPanfishSmallmouth BassTrout
Depth FAQ
How deep is Crystal Lake?
Crystal Lake is 46 feet deep at its deepest point and averages about 17 feet, according to Wisconsin DNR records.
Is there a free depth map of Crystal Lake?
Yes. LakeList publishes a free interactive depth contour map of Crystal Lake at a typical 5-foot interval, with an optional 3D underwater view, derived from LakeList depth model survey data.
Where does the Crystal Lake depth map come from?
The interactive depth contours are derived from LakeList depth model. Each contour set passes a visual QA review against the source document before it is published. The depths are a modeled estimate calibrated to the lake's documented maximum depth - not a survey, and 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
Keep exploring