Long Lake
Shawano County, Wisconsin · WBIC 321300
The DNR lists this lake's watershed (School Section Creek-Wolf River) as suspect or infected with VHS, a fish virus. The listing covers the watershed, not a test of this lake. About VHS
Size
86 acres
Max depth
35 ft
DNR lake type
Simple, Warm, dark water color
Water clarity
6 ft
Moderate, measured Oct 2025
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 1982), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
6 ft Secchi depthModerate
Last measured Oct 12, 2025. 379 readings on record, 1990 to 2025.
Typical summer clarity (June to September): 6 ft, moderate, from 40 readings (2012 to 2025).
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 LONG LAKE - DEEP HOLE. Checked Oct 23, 2026.
Water temperature
Last measured Oct 12, 2025, too long ago to show as the current temperature.
A typical year Modeled estimate
- Ice goes outabout Mar 14 (Mar 10 to Mar 28)
- Surface reaches 48°Fabout Mar 30 (Mar 25 to Apr 8)
- Surface reaches 64°Fabout Apr 23 (Apr 17 to May 3)
- June surface80°F, usually 78 to 81°F
- July surface85°F, usually 84 to 86°F
- August surface81°F, usually 79 to 83°F
Forms a warm top layer around Apr 8, lasting about 198 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 calibrated against measured temperatures for this lake. It is an estimate, not a measurement.
Measured: Wisconsin DNR via the Water Quality Portal (checked Oct 23, 2026). 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 Shawano County
- Schoenick Lake1.0 miles away
- Pine Lake1.1 miles away
- Grass Lake1.4 miles away
- Round Lake1.8 miles away
- Wagner Lake3.8 miles away
- Pella Pond8.8 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
- 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.