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 AccessRAMP—6-10NoYes
Upper Saint Croix Lake AccessRAMP—1-5NoNo
Upper Saint Croix Lake - South AccessRAMP—1-5NoNo
Upper Saint Croix Lake - North AccessRAMP—16-20NoNo

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.

Upper Saint Croix Lake — Facts & Figures | Stay Northern