Cast Gill

Smith Lake

Vilas County, Wisconsin · WBIC 1018200

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

43 acres

Max depth

18 ft

DNR lake type

Simple, Cool, clear water color

Water clarity

8.5 ft

Moderate, measured Sep 2024

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

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

8.5 ft Secchi depthModerate

Last measured Sep 14, 2024. 3 readings on record, 1992 to 2024.

Only a few readings are on record.

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 Smith Lake at Maximum Depth. Checked Oct 23, 2026.

Water temperature

A typical year Modeled estimate

  • Ice goes outabout Apr 23 (Apr 15 to Apr 28)
  • Surface reaches 48°Fabout Apr 29 (Apr 21 to May 8)
  • Surface reaches 64°Fabout May 19 (May 13 to May 25)
  • June surface69°F, usually 68 to 70°F
  • July surface75°F, usually 74 to 76°F
  • August surface71°F, usually 69 to 73°F

Forms a warm top layer around May 18, lasting about 85 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

Loading today's forecast…

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

Boat landings

  • Smith Lake Carry-in (listed under Washington County)Carry-in access · Unimproved surface · State(dnr)

Some landings are matched to this lake by name only, because the DNR list gives no location for them. They have no pin.

Wisconsin DNR public boat access sites. Checked Oct 23, 2026.

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More lakes in Vilas County

All Vilas County lakes

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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