Lake Anna
Florence County, Wisconsin · WBIC 587400
This lake has fishing rules that differ from the standard ones for its area. Check the official rules before you fish. Official regulations
Size
36 acres
Max depth
61 ft
DNR lake type
Simple, Cool, clear water color
Water clarity
20.5 ft
Clear, measured Jun 2023
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
Numbered dots are boat landings; tap one for directions. The list below has the same numbers. Drawn from the DNR's 24K hydrography (surveyed 1962), so the shape is approximate and a landing can sit a little off the shore. Open the DNR lake map.
Water clarity
20.5 ft Secchi depthClear
Last measured Jun 30, 2023. 7 readings on record, 2003 to 2023.
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 Lake Anna - Deep Hole. Checked Oct 23, 2026.
Water temperature
A typical year Modeled estimate
- Ice goes outabout Apr 17 (Apr 6 to Apr 24)
- Surface reaches 48°Fabout Apr 26 (Apr 19 to Apr 29)
- Surface reaches 64°Fabout May 24 (May 13 to May 26)
- June surface71°F, usually 69 to 72°F
- July surface76°F, usually 75 to 78°F
- August surface73°F, usually 72 to 75°F
Forms a warm top layer around Apr 25, lasting about 194 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
Forecast: National Weather Service (no endorsement implied). Sunrise, sunset and moon phase are calculated. The moon phase can be a day off.
Boat landings
- 1Lake Anna AccessCarry-in access · Unimproved surface · Township
Directions
Wisconsin DNR public boat access sites. Checked Oct 23, 2026.
More lakes in Florence County
- Cosgrove Lake1.0 miles away
- Railroad Lake1.2 miles away
- Bass Lake, Spread Eagle Chain of Lakes1.4 miles away
- West Lake1.6 miles away
- Ellwood Lake1.7 miles away
- Middle Lake1.8 miles away
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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