Cast Gill

Shallow Lake

Monroe County, Wisconsin · WBIC 1691000

Official regulationsDNR lake map

The DNR lists this lake's watershed (Fleming Creek-Black River) as suspect or infected with VHS, a fish virus. The listing covers the watershed, not a test of this lake. About VHS

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

Size

9.0 acres

Max depth

8 ft

DNR lake type

Simple, Harsh

Water clarity

2.7 ft

Low, measured Aug 2000

A lake type the DNR marks as having harsh conditions for fish. This describes the lake type in general, not this lake in particular.

Outline

Drawn from the DNR's 24K hydrography (surveyed 1983), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.

Water clarity

2.7 ft Secchi depthLowOlder reading

Last measured Aug 29, 2000. 1 reading on record, 2000.

Only one reading is 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 SHALLOW LAKE - SHALLOW LAKE. Checked Oct 23, 2026.

Water temperature

A typical year Modeled estimate

  • Ice goes outabout Apr 9 (Apr 4 to Apr 19)
  • Surface reaches 48°Fabout Apr 17 (Apr 12 to Apr 24)
  • Surface reaches 64°Fabout May 1 (Apr 19 to May 8)
  • June surface75°F, usually 74 to 77°F
  • July surface81°F, usually 79 to 83°F
  • August surface77°F, usually 75 to 78°F

Forms a warm top layer around Apr 16, lasting about 177 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.

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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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