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

13 landings

NameTypeRampTrailersFee
Eagle Drive Boat LaunchRAMP6-10NoNo
Lake Wisconsin Access Corning St. Boat LaunchRAMP0NoNo
Summer Oak Cove LandingRAMPGr50YesNo
Whalen Grade LandingRAMP16-20NoNo
Lake WisconsinRAMP0NoNo
Wisconsin River AccessRAMP0NoNo
West Point Public Boat LandingRAMP1-5NoNo
Harmony Drive W. Boat LaunchRAMP1-5NoNo
Pine Bluff AccessRAMP0NoNo
Lake Wisconsin Boat Access - Okee AccessRAMPGr25NoNo
Lake Wisconsin Boat Access - Sunset Bay LandingRAMPGr25NoNo
Lake Wisconsin Boat Access - Moon Valley AccessRAMP11-15NoYes
West Point Public Boat LandingRAMP0NoNo

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: 4/29/2026.