Halfmoon Lake

Eau Claire County, Wisconsin

OverviewFacts & Figures

Physical Characteristics

Surface Area (Acres)135
Maximum Depth (ft)9
Mean Depth (ft)6
Shoreline (miles)
Bottom Composition80% sand, 10% gravel, 5% rock, 5% muck
Water Clarity — Secchi Depth (ft)
Trophic Status
Drainage BasinSEEPAGE
Lake Classlake
Public Access
Township
GPS Coordinates44.80390° N, 91.52190° W
WBIC (DNR ID)2125400

Fish Species

3 species documented

AbundantCommonPresentRare
SpeciesAbundanceLast Survey
PanfishAbundant
Largemouth BassCommon
Northern PikePresent

Boat Landings

1 landing

NameTypeRampTrailersFee
Public Boat LandingPublic

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
Yellow IrisConfirmed

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