Oak Lake
Washburn County, Wisconsin · WBIC 1871300
Size
33 acres
Max depth
50 ft
DNR lake type
Simple, Cool, clear water color
Water clarity
14 ft
Clear, measured Sep 2009
A cool-water lake type: the DNR groups it with lakes that stay cooler through summer. This describes the lake type in general, not this lake in particular.
Outline
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
14 ft Secchi depthClearOlder reading
Last measured Sep 15, 2009. 70 readings on record, 1989 to 2009.
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 OAK LAKE - NEAR CENTER. Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 16 (Apr 6 to Apr 25)
- Surface reaches 48°Fabout Apr 19 (Apr 18 to Apr 29)
- Surface reaches 64°Fabout May 17 (May 10 to May 24)
- June surface72°F, usually 70 to 73°F
- July surface78°F, usually 77 to 79°F
- August surface74°F, usually 73 to 76°F
Forms a warm top layer around Apr 18, lasting about 189 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 Washburn County
- Deep Lake1.1 miles away
- Holmes Lake1.4 miles away
- Schullenberger Lake1.6 miles away
- Glendennon Lake1.8 miles away
- Leesome Lake1.8 miles away
- Moody Lake2.0 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
- 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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