Mud Lake
Polk County, Wisconsin · WBIC 2615700
The DNR lists this lake's watershed (Balsam Branch-Apple River) as suspect or infected with VHS, a fish virus. The listing covers the watershed, not a test of this lake. About VHS
Size
43 acres
Max depth
12 ft
DNR lake type
Simple, Warm, dark water color
Water clarity
2.5 ft
Low, measured Sep 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
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
2.5 ft Secchi depthLowOlder reading
Last measured Sep 14, 2020. 6 readings on record, 2019 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 Mud Lake - Center. Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 10 (Apr 5 to Apr 22)
- Surface reaches 48°Fabout Apr 17 (Apr 10 to Apr 25)
- Surface reaches 64°Fabout Apr 30 (Apr 19 to May 8)
- June surface77°F, usually 75 to 78°F
- July surface83°F, usually 81 to 85°F
- August surface77°F, usually 75 to 80°F
Forms a warm top layer around May 17, lasting about 99 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 Polk County
- Big Lake0.8 miles away
- Wind Lake0.9 miles away
- Church Pine Lake1.4 miles away
- Marlpit Spring1.4 miles away
- Rice Lake1.5 miles away
- Round Lake1.6 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
- 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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