Clark Lake
Door County, Wisconsin · WBIC 97700
The DNR lists this lake's watershed (Door Peninsula-Frontal Lake Michigan) 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
868 acres
Max depth
25 ft
DNR lake type
Complex, Cool, dark water color
Water clarity
14 ft
Clear, measured Aug 2026
A cool-water lake type: the DNR groups it with lakes that stay cooler through summer. 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 1982), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
14 ft Secchi depthClear
Last measured Aug 12, 2026. 444 readings on record, 1975 to 2026.
Typical summer clarity (June to September): 12.5 ft, clear, from 70 readings (2012 to 2026).
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 CLARK LAKE - DEEPEST POINT. Checked Oct 23, 2026.
Water temperature
Last measured Aug 12, 2026, too long ago to show as the current temperature.
A typical year Modeled estimate
- Ice goes outabout Apr 6 (Mar 28 to Apr 11)
- Surface reaches 48°Fabout Apr 23 (Apr 17 to May 1)
- Surface reaches 64°Fabout Jun 1 (May 30 to Jun 10)
- June surface69°F, usually 67 to 71°F
- July surface77°F, usually 75 to 78°F
- August surface76°F, usually 74 to 78°F
Mixes regularly through the summer instead of forming a warm top layer.
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.
Measured: Wisconsin DNR via the Water Quality Portal (checked Oct 23, 2026). 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
- 1Clark Lake AccessBoat ramp · Concrete surface · Accessible features · Township
Directions
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
More lakes in Door County
- Schwartz Lake3.8 miles away
- Lost Lake5.3 miles away
- Dunes Lake, Mud Lake5.7 miles away
- Kangaroo Lake7.2 miles away
- Thorp Pond9.3 miles away
- Mud Lake13 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
- 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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