Willow Flowage

Oneida County, Wisconsin

OverviewFacts & Figures

Physical Characteristics

Surface Area (Acres)4,217
Maximum Depth (ft)30
Mean Depth (ft)10
Shoreline (miles)
Bottom Composition85% sand, 8% gravel, 2% rock, 5% muck
Water Clarity — Secchi Depth (ft)
Trophic Status
Drainage BasinDRAINAGE
Lake Classflowage
Public Access
Township
GPS Coordinates45.71950° N, 89.88130° W
WBIC (DNR ID)1528300

Fish Species

6 species documented

AbundantCommonPresentRare
SpeciesAbundanceLast Survey
PanfishAbundant
Northern PikeCommon
WalleyeCommon
Largemouth BassPresent
MuskyPresent
Smallmouth BassPresent

Boat Landings

4 landings

NameTypeRampTrailersFee
Boat Landing 1Public
Boat Landing 2Public
Boat Landing 3Public
Boat Landing 4Public

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
Eurasian Water-MilfoilConfirmed
Rusty CrayfishConfirmed

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

Willow Flowage — Facts & Figures | Stay Northern