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 LaunchRAMP1-5NoNo
Pewaukee LakeRAMP6-10YesNo
Pewaukee Lake Boat RampRAMPGr25YesYes

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.