Little Muskego Lake

Waukesha County, Wisconsin

OverviewFacts & Figures

Physical Characteristics

Surface Area (Acres)470
Maximum Depth (ft)65
Mean Depth (ft)14
Shoreline (miles)—
Bottom Composition5% sand, 25% gravel, 0% rock, 70% muck
Water Clarity — Secchi Depth (ft)—
Trophic Status—
Drainage BasinDRAINAGE
Lake Classlake
Public Access—
Township—
GPS Coordinates42.91380° N, 88.14310° W
WBIC (DNR ID)762700

Fish Species

4 species documented

AbundantCommonPresentRare
SpeciesAbundanceLast Survey
Largemouth BassCommon—
PanfishCommon—
Northern PikePresent—
WalleyePresent—

Boat Landings

4 landings

NameTypeRampTrailersFee♿
Oak Court Public AccessRAMP—0YesNo
Idle Isle Park Boat RampRAMP—16-20YesNo
Pleasant View Drive Boat Ramp (Lake Access #9)RAMP—0YesNo
Little Muskego Public Access (Hillview Drive)RAMP—0YesNo

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
Asiatic Clam (Corbicula)Confirmed—
Chinese Mystery SnailConfirmed—
Curly-Leaf PondweedConfirmed—
Eurasian Water-MilfoilConfirmed—
Hybrid Eurasian / Northern Water-MilfoilConfirmed—
Starry StonewortConfirmed—
Zebra MusselConfirmed—

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