Crystal Lake
Douglas County, Wisconsin · WBIC 2459700
Size
288 acres
Max depth
22 ft
DNR lake type
Complex, Warm, clear water color
Water clarity
7.5 ft
Moderate, measured Oct 2011
A warm-water lake type: the DNR groups it with lakes that warm up through summer. This describes the lake type in general, not this lake in particular.
Outline
Numbered dots are boat landings; tap one for directions. The list below has the same numbers. Drawn from the DNR's 24K hydrography (surveyed 1982), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
7.5 ft Secchi depthModerateOlder reading
Last measured Oct 21, 2011. 106 readings on record, 1999 to 2011.
Nothing has been measured in the last 5 years, so this may not match the lake today.
Secchi depth is how far down a white disk stays visible. A bigger number means clearer water. Clear means a Secchi depth of 10 feet or more, moderate 5 to 10 feet, low under 5 feet.
Wisconsin DNR water monitoring (volunteer and staff), via the Water Quality Portal; station CRYSTAL LAKE - NEAR DEEP HOLE. Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 20 (Apr 12 to Apr 26)
- Surface reaches 48°Fabout May 3 (Apr 22 to May 8)
- Surface reaches 64°Fabout May 28 (May 23 to Jun 4)
- June surface71°F, usually 69 to 72°F
- July surface76°F, usually 75 to 78°F
- August surface73°F, usually 71 to 75°F
Forms a warm top layer around Jun 11, lasting about 39 days.
A computer model of this lake's typical weather and water, built from 15 years, 2005 to 2019. Ranges show the middle half of years. The model was not calibrated against measured temperatures for this lake. It is an estimate, not a measurement.
Modeled: U.S. Geological Survey lake temperature data release (doi:10.5066/P9CA6XP8).
Today at the lake
Forecast: National Weather Service (no endorsement implied). Sunrise, sunset and moon phase are calculated. The moon phase can be a day off.
Boat landings
- 1Crystal Lake AccessBoat ramp · Paved surface · Township
Directions
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
More lakes in Douglas County
- Person Lake0.9 miles away
- Cranberry Lake1.1 miles away
- Wilson Lake1.7 miles away
- Round Lake2.7 miles away
- Minong Flowage(L Nancy)2.9 miles away
- Snipe Lake3.0 miles away
Where this comes from
- Size, depth and lake typeWisconsin DNR lake classifications, checked Oct 23, 2026
- OutlineWisconsin DNR 24K hydrography, checked Oct 23, 2026
- Regulations linkWisconsin DNR fishing regulations (linked, not restated), checked Oct 23, 2026
- Boat landingsWisconsin DNR public boat access sites, checked Oct 23, 2026
- Water clarityWisconsin DNR water monitoring, via the Water Quality Portal, checked Oct 23, 2026
- Typical-year temperatureU.S. Geological Survey lake temperature model (modeled estimate), checked Oct 23, 2026
- VHS statusWisconsin DNR VHS status by watershed, checked Oct 24, 2026
- Depth map linkWisconsin DNR lake maps list, checked Oct 24, 2026
See data sources for what each source covers, and about for how the numbers are matched to lakes.
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