Lake Tomah

Monroe County, Wisconsin

OverviewFacts & Figures

Physical Characteristics

Surface Area (Acres)245
Maximum Depth (ft)19
Mean Depth (ft)4
Shoreline (miles)
Bottom Composition50% sand, 0% gravel, 0% rock, 50% muck
Water Clarity — Secchi Depth (ft)
Trophic Status
Drainage BasinDRAINAGE
Lake Classflowage
Public Access
Township
GPS Coordinates43.98160° N, 90.52310° W
WBIC (DNR ID)1342100

Fish Species

3 species documented

AbundantCommonPresentRare
SpeciesAbundanceLast Survey
Largemouth BassCommon
Northern PikeCommon
PanfishCommon

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
Chinese Mystery SnailConfirmed
Curly-Leaf PondweedConfirmed
Eurasian Water-MilfoilConfirmed
Rusty CrayfishConfirmed

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

Lake Tomah — Facts & Figures | Stay Northern