Upper Saint Croix Lake

Douglas County, Wisconsin

OverviewFacts & Figures

Physical Characteristics

Surface Area (Acres)828
Maximum Depth (ft)22
Mean Depth (ft)13
Shoreline (miles)
Bottom Composition40% sand, 30% gravel, 20% rock, 10% muck
Water Clarity — Secchi Depth (ft)
Trophic Status
Drainage BasinDRAINAGE
Lake Classlake
Public Access
Township
GPS Coordinates46.35660° N, 91.80390° W
WBIC (DNR ID)2747300

Fish Species

6 species documented

AbundantCommonPresentRare
SpeciesAbundanceLast Survey
Northern PikeAbundant
Largemouth BassCommon
PanfishCommon
WalleyeCommon
MuskyPresent
Smallmouth BassPresent

Boat Landings

4 landings

NameTypeRampTrailersFee
Upper Saint Croix Lake AccessRAMP6-10NoYes
Upper Saint Croix Lake AccessRAMP1-5NoNo
Upper Saint Croix Lake - South AccessRAMP1-5NoNo
Upper Saint Croix Lake - North AccessRAMP16-20NoNo

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
Purple LoosestrifeConfirmed
Rusty CrayfishConfirmed
Yellow IrisConfirmed

Data sourced from Wisconsin DNR lake surveys. Last scraped: 4/30/2026.