Big Muskego Lake

Waukesha County, Wisconsin

OverviewFacts & Figures

Physical Characteristics

Surface Area (Acres)2,194
Maximum Depth (ft)23
Mean Depth (ft)
Shoreline (miles)
Bottom Composition10% sand, 0% gravel, 0% rock, 90% muck
Water Clarity — Secchi Depth (ft)
Trophic Status
Drainage BasinDRAINAGE
Lake Classlake
Public Access
Township
GPS Coordinates42.87650° N, 88.11280° W
WBIC (DNR ID)762400

Fish Species

3 species documented

AbundantCommonPresentRare
SpeciesAbundanceLast Survey
Largemouth BassCommon
Northern PikePresent
PanfishPresent

Boat Landings

2 landings

NameTypeRampTrailersFee
Boat Landing 1Public
Boat Landing 2Public

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
Spiny NaiadConfirmed
Starry StonewortConfirmed

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