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♿
Grandfather Flowage AccessCARRY-IN—0NoNo

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: 4/29/2026.