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 LaunchRAMP—6-10NoNo
Lake Wisconsin Access Corning St. Boat LaunchRAMP—0NoNo
Summer Oak Cove LandingRAMP—Gr50YesNo
Whalen Grade LandingRAMP—16-20NoNo
Lake WisconsinRAMP—0NoNo
Wisconsin River AccessRAMP—0NoNo
West Point Public Boat LandingRAMP—1-5NoNo
Harmony Drive W. Boat LaunchRAMP—1-5NoNo
Pine Bluff AccessRAMP—0NoNo
Lake Wisconsin Boat Access - Okee AccessRAMP—Gr25NoNo
Lake Wisconsin Boat Access - Sunset Bay LandingRAMP—Gr25NoNo
Lake Wisconsin Boat Access - Moon Valley AccessRAMP—11-15NoYes
West Point Public Boat LandingRAMP—0NoNo

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.

Lake Wisconsin — Facts & Figures | Stay Northern