Montana Lake

Oconto, Marinette County, Wisconsin

OverviewFacts & Figures

Physical Characteristics

Surface Area (Acres)143
Maximum Depth (ft)28
Mean Depth (ft)15
Shoreline (miles)—
Bottom Composition35% sand, 0% gravel, 0% rock, 65% muck
Water Clarity — Secchi Depth (ft)—
Trophic Status—
Drainage BasinDRAINAGE
Lake Classlake
Public Access—
Township—
GPS Coordinates45.04840° N, 88.11590° W
WBIC (DNR ID)518300

Fish Species

3 species documented

AbundantCommonPresentRare
SpeciesAbundanceLast Survey
Largemouth BassPresent—
Northern PikePresent—
PanfishPresent—

Boat Landings

1 landing

NameTypeRampTrailersFee♿
Montana Lake AccessRAMP—6-10NoNo

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
Chinese Mystery SnailConfirmed—
Eurasian Water-MilfoilConfirmed—

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