Lake Montello

Marquette County, Wisconsin

OverviewFacts & Figures

Physical Characteristics

Surface Area (Acres)341
Maximum Depth (ft)17
Mean Depth (ft)—
Shoreline (miles)—
Bottom Composition60% sand, 0% gravel, 0% rock, 40% muck
Water Clarity — Secchi Depth (ft)—
Trophic Status—
Drainage BasinDRAINAGE
Lake Classflowage
Public Access—
Township—
GPS Coordinates43.80360° N, 89.34030° W
WBIC (DNR ID)164300

Fish Species

3 species documented

AbundantCommonPresentRare
SpeciesAbundanceLast Survey
Largemouth BassCommon—
Northern PikeCommon—
PanfishCommon—

Boat Landings

1 landing

NameTypeRampTrailersFee♿
Montello Lake AccessRAMP—1-5NoNo

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—
Curly-Leaf PondweedConfirmed—
Eurasian Water-MilfoilConfirmed—
Hybrid Eurasian / Northern Water-MilfoilConfirmed—

Data sourced from Wisconsin DNR lake surveys. Last scraped: 4/29/2026.