Pewaukee Lake

Waukesha County, Wisconsin

OverviewFacts & Figures

Physical Characteristics

Surface Area (Acres)2,437
Maximum Depth (ft)45
Mean Depth (ft)15
Shoreline (miles)—
Bottom Composition20% sand, 25% gravel, 0% rock, 55% muck
Water Clarity — Secchi Depth (ft)—
Trophic Status—
Drainage BasinDRAINAGE
Lake Classlake
Public Access—
Township—
GPS Coordinates43.07290° N, 88.30670° W
WBIC (DNR ID)772000

Fish Species

5 species documented

AbundantCommonPresentRare
SpeciesAbundanceLast Survey
Largemouth BassCommon—
MuskyCommon—
Northern PikeCommon—
PanfishCommon—
WalleyePresent—

Boat Landings

3 landings

NameTypeRampTrailersFee♿
Garden Road Boat LaunchRAMP—1-5NoNo
Pewaukee LakeRAMP—6-10YesNo
Pewaukee Lake Boat RampRAMP—Gr25YesYes

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
Chinese Mystery SnailConfirmed—
Curly-Leaf PondweedConfirmed—
Eurasian Water-MilfoilConfirmed—
Purple LoosestrifeConfirmed—
Rusty CrayfishConfirmed—
Starry StonewortConfirmed—
Zebra MusselConfirmed—

Data sourced from Wisconsin DNR lake surveys. Last scraped: 4/30/2026.