Great Bass Lake
Oneida County, Wisconsin · WBIC 1851600
Size
118 acres
Max depth
15 ft
DNR lake type
Simple, Warm, dark water color
Water clarity
12 ft
Clear, measured Sep 2026
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 1990), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
12 ft Secchi depthClear
Last measured Sep 29, 2026. 72 readings on record, 1995 to 2026.
Typical summer clarity (June to September): 10.5 ft, clear, from 35 readings (2023 to 2026).
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 BASS LAKE - DEEP HOLE. Checked Oct 23, 2026.
Water temperature
63°F surface, measured Sep 29, 2026
Measured near the surface (0.3 m down). A single reading, not a daily value.
A typical year Modeled estimate
- Ice goes outabout Apr 23 (Apr 14 to Apr 30)
- Surface reaches 48°Fabout May 3 (Apr 23 to May 8)
- Surface reaches 64°Fabout May 25 (May 20 to Jun 1)
- June surface69°F, usually 67 to 70°F
- July surface74°F, usually 73 to 75°F
- August surface71°F, usually 69 to 73°F
Mixes regularly through the summer instead of forming a warm top layer.
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.
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 Oneida County
- Diamond Lake1.4 miles away
- Booth Lake1.7 miles away
- Clear Lake1.8 miles away
- Baycat Lake2.0 miles away
- Fuller Lake2.3 miles away
- Amber Lake2.9 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
- Measured temperatureWisconsin 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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