Porcupine Lake
Oconto County, Wisconsin · WBIC 443500
The DNR lists this lake's watershed (Little 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
30 acres
Max depth
20 ft
DNR lake type
Simple, Harsh
Water clarity
10 ft
Clear, measured Aug 2023
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
Numbered dots are boat landings; tap one for directions. The list below has the same numbers. Drawn from the DNR's 24K hydrography (surveyed 1973), 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 depthClear
Last measured Aug 23, 2023. 16 readings on record, 1976 to 2023.
Typical summer clarity (June to September): 5.6 ft, moderate, from 12 readings (2019 to 2023).
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 Porcupine Lake-Deep Hole. Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 1 (Mar 25 to Apr 11)
- Surface reaches 48°Fabout Apr 14 (Apr 5 to Apr 25)
- Surface reaches 64°Fabout May 5 (May 2 to May 12)
- June surface75°F, usually 73 to 76°F
- July surface80°F, usually 78 to 81°F
- August surface77°F, usually 75 to 78°F
Forms a warm top layer around Apr 16, lasting about 206 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.
Boat landings
- 1PORCUPINE LAKE ACCESSBoat ramp · Gravel surface · Township
Directions
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
More lakes in Oconto County
- First Lake3.2 miles away
- Johnson Lake3.4 miles away
- Montana Lake3.6 miles away
- Rost Lake4.0 miles away
- Kelly Lake4.6 miles away
- Round Lake4.6 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
- Boat landingsWisconsin DNR public boat access sites, 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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