Ottman Lake
Waupaca County, Wisconsin · WBIC 264500
The DNR lists this lake's watershed (Waupaca River) as suspect or infected with VHS, a fish virus. The listing covers the watershed, not a test of this lake. About VHS
This lake has fishing rules that differ from the standard ones for its area. Check the official rules before you fish. Official regulations
Size
13 acres
Max depth
15 ft
DNR lake type
Simple, Warm, clear water color
Water clarity
7.2 ft
Moderate, measured Jul 2016
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 1982), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
7.2 ft Secchi depthModerateOlder reading
Last measured Jul 13, 2016. 3 readings on record, 1994 to 2016.
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 Ottman Lake - Deep Hole - Waupaca County. Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 8 (Apr 3 to Apr 14)
- Surface reaches 48°Fabout Apr 18 (Apr 11 to Apr 24)
- Surface reaches 64°Fabout May 5 (May 2 to May 10)
- June surface74°F, usually 73 to 76°F
- July surface80°F, usually 78 to 80°F
- August surface75°F, usually 73 to 77°F
Forms a warm top layer around May 15, lasting about 71 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 Waupaca County
- Youngs Lake0.4 miles away
- Limekiln Lake0.4 miles away
- Columbia Lake0.4 miles away
- Round Lake0.5 miles away
- Beasley Lake0.5 miles away
- Lake Orlando0.6 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
- 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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