Big Saint Germain Lake

Vilas County, Wisconsin

OverviewFacts & Figures

Physical Characteristics

Surface Area (Acres)1,622
Maximum Depth (ft)42
Mean Depth (ft)21
Shoreline (miles)
Bottom Composition75% sand, 10% gravel, 5% rock, 10% muck
Water Clarity — Secchi Depth (ft)
Trophic Status
Drainage BasinDRAINAGE
Lake Classlake
Public Access
Township
GPS Coordinates45.93430° N, 89.51980° W
WBIC (DNR ID)1591100

Fish Species

7 species documented

AbundantCommonPresentRare
SpeciesAbundanceLast Survey
MuskyCommon
Northern PikeCommon
PanfishCommon
WalleyeCommon
Largemouth BassPresent
Smallmouth BassPresent
TroutPresent

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
Banded Mystery SnailConfirmed
Chinese Mystery SnailConfirmed
Rusty CrayfishConfirmed

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