Cast Gill

Lehman Lake

Marinette County, Wisconsin · WBIC 625100

Official regulationsDNR lake map

This lake has fishing rules that differ from the standard ones for its area. Check the official rules before you fish. Official regulations

Size

24 acres

Max depth

15 ft

DNR lake type

Simple, Warm, dark water color

Water clarity

12.5 ft

Clear, 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 1972), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.

Water clarity

12.5 ft Secchi depthClearOlder reading

Last measured Sep 8, 2000. 2 readings on record, 1999 to 2000.

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 LEHMAN LAKE - LEHMAN LAKE. Checked Oct 23, 2026.

Water temperature

A typical year Modeled estimate

  • Ice goes outabout Apr 14 (Apr 3 to Apr 22)
  • Surface reaches 48°Fabout Apr 21 (Apr 15 to Apr 29)
  • Surface reaches 64°Fabout May 13 (May 9 to May 23)
  • June surface73°F, usually 71 to 74°F
  • July surface78°F, usually 77 to 79°F
  • August surface75°F, usually 73 to 76°F

Forms a warm top layer around Apr 17, lasting about 189 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

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Forecast: National Weather Service (no endorsement implied). Sunrise, sunset and moon phase are calculated. The moon phase can be a day off.

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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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