Pat Shay Lake
Forest County, Wisconsin · WBIC 1607100
Size
120 acres
Max depth
5 ft
DNR lake type
Simple, Warm, dark water color
Water clarity
3 ft
Low, measured Aug 2000
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 1991), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
3 ft Secchi depthLowOlder reading
Last measured Aug 29, 2000. 2 readings on record, 1999 to 2000.
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 PAT SHAY LAKE - PAT SHAY LAKE. Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 24 (Apr 16 to May 1)
- Surface reaches 48°Fabout Apr 30 (Apr 23 to May 8)
- Surface reaches 64°Fabout May 19 (May 11 to May 25)
- June surface71°F, usually 69 to 72°F
- July surface76°F, usually 75 to 77°F
- August surface72°F, usually 70 to 74°F
Forms a warm top layer around May 26, lasting about 93 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 Forest County
- Sevenmile Lake1.2 miles away
- Echo Lake1.6 miles away
- Harmony Lake1.8 miles away
- Harriet Lake2.0 miles away
- Four Ducks Lake2.2 miles away
- Gertrude Lake2.6 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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