Loon Lake
Barron County, Wisconsin · WBIC 2478600
Size
94 acres
Max depth
26 ft
DNR lake type
Complex, Warm, clear water color
Water clarity
9 ft
Moderate, measured Aug 2020
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 1978), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
9 ft Secchi depthModerateOlder reading
Last measured Aug 31, 2020. 125 readings on record, 1990 to 2020.
Typical summer clarity (June to September): 9 ft, moderate, from 39 readings (2012 to 2020).
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 Loon Lake - Deep Hole. Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 17 (Apr 9 to Apr 26)
- Surface reaches 48°Fabout Apr 28 (Apr 18 to May 7)
- Surface reaches 64°Fabout May 17 (May 11 to May 23)
- June surface72°F, usually 71 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 May 10, lasting about 128 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.
Stocking history
- Walleyelast stocked 2014 (large fingerling); stocked in 2 years since 2010
Stocking shows what was added to the lake, not what is in it now.
Wisconsin DNR annual fish stocking summary. Checked Oct 23, 2026.
Boat landings
- 1Loon Lake AccessBoat ramp · Gravel surface · State(dnr)
Directions
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
More lakes in Barron County
- Crystal Lake1.5 miles away
- Echo Lake1.7 miles away
- Gates Lake3.1 miles away
- Mud Lake3.1 miles away
- Scott Lake3.5 miles away
- Upper Turtle Lake3.6 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
- Stocking historyWisconsin DNR annual fish stocking summary, 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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