Lost Lake
Door County, Wisconsin · WBIC 97900
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
Size
91 acres
Max depth
5 ft
DNR lake type
Simple, Warm, dark water color
Water clarity
0.9 ft
Low, measured Sep 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 1982), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
0.9 ft Secchi depthLowOlder reading
Last measured Sep 8, 2000. 1 reading on record, 2000.
Only one reading is 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 LOST LAKE - LOST LAKE. Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 7 (Mar 28 to Apr 14)
- Surface reaches 48°Fabout Apr 21 (Apr 15 to Apr 29)
- Surface reaches 64°Fabout May 23 (May 18 to May 28)
- June surface71°F, usually 70 to 73°F
- July surface79°F, usually 77 to 80°F
- August surface76°F, usually 74 to 78°F
Forms a warm top layer around May 29, lasting about 81 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 Door County
- Thorp Pond4.8 miles away
- Kangaroo Lake5.3 miles away
- Clark Lake5.3 miles away
- Schwartz Lake8.3 miles away
- Dunes Lake, Mud Lake9.5 miles away
- Mud Lake11 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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