Lost Lake
Marinette County, Wisconsin · WBIC 502600
This lake has fishing rules that differ from the standard ones for its area. Check the official rules before you fish. Official regulations
Size
19 acres
Max depth
20 ft
DNR lake type
Simple, Warm, dark water color
Water clarity
15 ft
Clear, measured Aug 1996
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 1972), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
15 ft Secchi depthClearOlder reading
Last measured Aug 20, 1996. 5 readings on record, 1996.
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 - DEEP SPOT. Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 17 (Apr 5 to Apr 23)
- Surface reaches 48°Fabout Apr 25 (Apr 16 to Apr 29)
- Surface reaches 64°Fabout May 21 (May 10 to May 26)
- June surface70°F, usually 68 to 72°F
- July surface76°F, usually 75 to 77°F
- August surface73°F, usually 71 to 75°F
Forms a warm top layer around May 15, lasting about 76 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 Marinette County
- Deer Lake0.4 miles away
- Harwell Lake1.2 miles away
- Murbou Lake1.3 miles away
- Little Newton Lake2.5 miles away
- Spring Lake2.6 miles away
- Newton Lake2.7 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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