Cast Gill

Lower Ninemile Lake

Vilas County, Wisconsin · WBIC 1605200

Official regulationsDNR lake map

Size

646 acres

Max depth

5 ft

DNR lake type

Complex, Cool, dark water color

Water clarity

5.8 ft

Moderate, measured Aug 2025

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

Lower Ninemile Lake Access1Eagle River Boat Ramp2

Numbered dots are boat landings; tap one for directions. The list below has the same numbers. Drawn from the DNR's 24K hydrography (surveyed 1991), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.

Water clarity

5.8 ft Secchi depthModerate

Last measured Aug 19, 2025. 200 readings on record, 1993 to 2025.

Typical summer clarity (June to September): 5.5 ft, moderate, from 130 readings (2012 to 2025).

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 Lower Ninemile Lake - Max Depth. Checked Oct 23, 2026.

Water temperature

A typical year Modeled estimate

  • Ice goes outabout Apr 24 (Apr 16 to May 1)
  • Surface reaches 48°Fabout May 1 (Apr 23 to May 9)
  • Surface reaches 64°Fabout May 29 (May 25 to Jun 6)
  • June surface69°F, usually 67 to 71°F
  • July surface74°F, usually 73 to 76°F
  • August surface71°F, usually 70 to 73°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.

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.

Fish recorded near this lake

Recorded in open fish survey and museum records (GBIF). A record shows a fish was found near this lake in that year, not that it is there now, and says nothing about how many. Most coordinates are rounded to about 1 km, so a record is attached only when one lake is the clear match.

Open fish survey and museum records from GBIF; datasets are listed on the sources page. Checked Oct 23, 2026.

Boat landings

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

Share this lake

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
  • Fish recordedOpen fish survey and museum records, via GBIF, 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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