Ledge Lake
Oconto County, Wisconsin · WBIC 539000
Size
34 acres
Max depth
19 ft
DNR lake type
Simple, Harsh
Water clarity
10 ft
Clear, measured Jul 2015
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 1991), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
10 ft Secchi depthClearOlder reading
Last measured Jul 29, 2015. 2 readings on record, 2015.
Only a few readings are 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 Ledge Lake deep hole. Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 10 (Apr 1 to Apr 21)
- Surface reaches 48°Fabout Apr 18 (Apr 15 to Apr 26)
- Surface reaches 64°Fabout May 13 (May 8 to May 23)
- June surface73°F, usually 72 to 75°F
- July surface79°F, usually 77 to 80°F
- August surface75°F, usually 73 to 77°F
Forms a warm top layer around Apr 17, lasting about 203 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 Oconto County
- Cedar Lake0.7 miles away
- Dell Lake0.8 miles away
- Flower Lake1.8 miles away
- Gilkey Lake2.6 miles away
- Crooked Lake2.9 miles away
- Bass Lake3.0 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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