Cast Gill

Chapman Lake

Chippewa County, Wisconsin · WBIC 2147200

Official regulationsDNR lake map

The DNR lists this lake's watershed (North Fork Eau Claire River) as suspect or infected with VHS, a fish virus. The listing covers the watershed, not a test of this lake. About VHS

Size

34 acres

Max depth

9 ft

DNR lake type

Simple, Riverine

Water clarity

2.2 ft

Low, measured Jul 1987

A river-like water type, with flow instead of a still basin. This describes the lake type in general, not this lake in particular.

Outline

Chapman Lake Access1

Numbered dots are boat landings; tap one for directions. The list below has the same numbers. Drawn from the DNR's 24K hydrography (surveyed 1979), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.

Water clarity

2.2 ft Secchi depthLowOlder reading

Last measured Jul 3, 1987. 10 readings on record, 1986 to 1987.

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 CHAPMAN LAKE - DEEP HOLE. Checked Oct 23, 2026.

Water temperature

A typical year Modeled estimate

  • Ice goes outabout Apr 11 (Apr 3 to Apr 22)
  • Surface reaches 48°Fabout Apr 16 (Apr 13 to Apr 25)
  • Surface reaches 64°Fabout Apr 26 (Apr 20 to May 4)
  • June surface78°F, usually 77 to 79°F
  • July surface84°F, usually 82 to 87°F
  • August surface78°F, usually 76 to 80°F

Forms a warm top layer around May 26, lasting about 69 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.

Stocking history

  • Largemouth Basslast stocked 2023 (adult (broodstock) and large fingerling); stocked in 5 years since 2010
  • Yellow Perchlast stocked 2022 (adult, large fingerling and yearling); stocked in 3 years since 2010
  • Northern Pikelast stocked 2021 (adult, large fingerling and small fingerling); stocked in 5 years since 2010
  • Bluegilllast stocked 2013 (large fingerling); stocked in 4 years since 2010

Stocking shows what was added to the lake, not what is in it now.

Wisconsin DNR annual fish stocking summary. Checked Oct 23, 2026.

Boat landings

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

Share this lake

More lakes in Chippewa County

All Chippewa 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
  • Stocking historyWisconsin DNR annual fish stocking summary, 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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