Mud Lake
Fond du Lac County, Wisconsin · WBIC 43700
Size
55 acres
Max depth
17 ft
DNR lake type
Simple, Harsh
Water clarity
1.3 ft
Low, measured Jul 2007
A lake type the DNR marks as having harsh conditions for fish. This describes the lake type in general, not this lake in particular.
Outline
Drawn from the DNR's 24K hydrography (surveyed 1974), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
1.3 ft Secchi depthLowOlder reading
Last measured Jul 17, 2007. 1 reading on record, 2007.
Only one reading is on record.
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 - Deep Hole. Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 5 (Mar 29 to Apr 11)
- Surface reaches 48°Fabout Apr 18 (Apr 11 to Apr 23)
- Surface reaches 64°Fabout May 2 (Apr 20 to May 8)
- June surface76°F, usually 75 to 77°F
- July surface82°F, usually 80 to 83°F
- August surface77°F, usually 75 to 79°F
Forms a warm top layer around Apr 28, lasting about 146 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 Fond du Lac County
- Kettle Moraine Lake0.7 miles away
- Spruce Lake1.4 miles away
- Cedar Lake1.6 miles away
- Long Lake2.9 miles away
- Crooked Lake4.1 miles away
- Butzke Lake4.1 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.
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