Grass Lake

Shawano County, Wisconsin

OverviewFacts & Figures

Physical Characteristics

Surface Area (Acres)90
Maximum Depth (ft)52
Mean Depth (ft)14
Shoreline (miles)
Bottom Composition30% sand, 40% gravel, 20% rock, 10% muck
Water Clarity — Secchi Depth (ft)
Trophic Status
Drainage BasinDRAINAGE
Lake Classflowage
Public Access
Township
GPS Coordinates44.69020° N, 88.66850° W
WBIC (DNR ID)299200

Fish Species

6 species documented

AbundantCommonPresentRare
SpeciesAbundanceLast Survey
Largemouth BassAbundant
PanfishAbundant
Northern PikeCommon
Smallmouth BassCommon
MuskyPresent
WalleyePresent

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
Curly-Leaf PondweedConfirmed
Eurasian Water-MilfoilConfirmed
Hybrid Eurasian / Northern Water-MilfoilConfirmed
Starry StonewortConfirmed
Zebra MusselConfirmed

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