Grandfather Flowage

Lincoln County, Wisconsin

OverviewFacts & Figures

Physical Characteristics

Surface Area (Acres)184
Maximum Depth (ft)32
Mean Depth (ft)
Shoreline (miles)
Bottom Composition70% sand, 12% gravel, 3% rock, 15% muck
Water Clarity — Secchi Depth (ft)
Trophic Status
Drainage BasinDRAINAGE
Lake Classflowage
Public Access
Township
GPS Coordinates45.31860° N, 89.78370° W
WBIC (DNR ID)1502400

Fish Species

6 species documented

AbundantCommonPresentRare
SpeciesAbundanceLast Survey
Largemouth BassPresent
MuskyPresent
Northern PikePresent
PanfishPresent
Smallmouth BassPresent
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
Rusty CrayfishConfirmed

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