Lake Wisconsin

Sauk, Columbia County, Wisconsin

OverviewFacts & Figures

Physical Characteristics

Surface Area (Acres)7,197
Maximum Depth (ft)24
Mean Depth (ft)
Shoreline (miles)
Bottom Composition
Water Clarity — Secchi Depth (ft)
Trophic Status
Drainage BasinDRAINAGE
Lake Classflowage
Public Access
Township
GPS Coordinates43.37100° N, 89.60310° W
WBIC (DNR ID)1260600

Fish Species

7 species documented

AbundantCommonPresentRare
SpeciesAbundanceLast Survey
Largemouth BassCommon
Northern PikeCommon
Smallmouth BassCommon
WalleyeCommon
CatfishPresent
PanfishPresent
TroutPresent

Boat Landings

15 landings

NameTypeRampTrailersFee
Boat Landing 1Public
Boat Landing 2Public
Boat Landing 3Public
Boat Landing 4Public
Boat Landing 5Public
Boat Landing 6Public
Boat Landing 7Public
Boat Landing 8Public
Boat Landing 9Public
Boat Landing 10Public
Boat Landing 11Public
Boat Landing 12Public
Boat Landing 13Public
Boat Landing 14Public
Boat Landing 15Public

Invasive Species

Invasive species have been documented in or near this lake. Please clean, drain, and dry all watercraft and equipment before leaving to prevent spread.

SpeciesStatusFirst Detected
Curly-Leaf PondweedConfirmed
Eurasian Water-MilfoilConfirmed
Purple LoosestrifeConfirmed
Zebra MusselConfirmed

Data sourced from Wisconsin DNR lake surveys. Last scraped: 3/24/2026.

Lake Wisconsin — Facts & Figures | Stay Northern