Great Corn Lake
Vilas County, Wisconsin · WBIC 1851700
Size
32 acres
Max depth
28 ft
DNR lake type
Simple, Warm, dark water color
Water clarity
12.8 ft
Clear, measured Aug 2000
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
Drawn from the DNR's 24K hydrography (surveyed 1981), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
12.8 ft Secchi depthClearOlder reading
Last measured Aug 29, 2000. 1 reading on record, 2000.
Only one reading is on record.
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 GREAT CORN LAKE - GREAT CORN LAKE. Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 22 (Apr 15 to Apr 29)
- Surface reaches 48°Fabout May 1 (Apr 22 to May 8)
- Surface reaches 64°Fabout May 26 (May 21 to Jun 2)
- June surface69°F, usually 67 to 70°F
- July surface75°F, usually 73 to 76°F
- August surface72°F, usually 70 to 74°F
Forms a warm top layer around Apr 26, lasting about 195 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.
More lakes in Vilas County
- Little Corn Lake0.4 miles away
- Snort Lake0.6 miles away
- Middle Gresham Lake1.1 miles away
- Wild Rice Lake1.4 miles away
- Upper Gresham Lake1.6 miles away
- Lower Gresham Lake1.7 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
- 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
See data sources for what each source covers, and about for how the numbers are matched to lakes.
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