Boelter Lake
Portage County, Wisconsin · WBIC 182700
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
14 acres
Max depth
5 ft
DNR lake type
Simple, Harsh
Water clarity
2 ft
Low, measured Aug 2011
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 1969), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
2 ft Secchi depthLowOlder reading
Last measured Aug 9, 2011. 3 readings on record, 2011.
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 Boelter Lake - Deep Hole. Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 12 (Apr 4 to Apr 16)
- Surface reaches 48°Fabout Apr 17 (Apr 12 to Apr 25)
- Surface reaches 64°Fabout May 5 (Apr 21 to May 9)
- June surface77°F, usually 76 to 79°F
- July surface83°F, usually 81 to 85°F
- August surface77°F, usually 74 to 78°F
Forms a warm top layer around Jun 13, lasting about 60 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 Portage County
- Peters Lake0.6 miles away
- Riley Lake1.1 miles away
- Jim Lake1.2 miles away
- Pleasant Lake1.7 miles away
- Pine Lake1.7 miles away
- Silver Lake1.8 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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