Mill Lake

Walworth County, Wisconsin

OverviewFacts & Figures

Physical Characteristics

Surface Area (Acres)271
Maximum Depth (ft)40
Mean Depth (ft)—
Shoreline (miles)—
Bottom Composition20% sand, 10% gravel, 0% rock, 70% muck
Water Clarity — Secchi Depth (ft)—
Trophic Status—
Drainage BasinDRAINAGE
Lake Classlake
Public Access—
Township—
GPS Coordinates42.75900° N, 88.56360° W
WBIC (DNR ID)755600

Fish Species

4 species documented

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

Boat Landings

No boat landing data available.

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
Banded Mystery SnailConfirmed—
Chinese Mystery SnailConfirmed—
Curly-Leaf PondweedConfirmed—
Eurasian Water-MilfoilConfirmed—
Phragmites (non-native)Confirmed—
Purple LoosestrifeConfirmed—
Spiny NaiadConfirmed—
Starry StonewortConfirmed—
Zebra MusselConfirmed—

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