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

3 landings

NameTypeRampTrailersFee♿
Bow Street Boat RampRAMP—1-5NoNo
Winnebago Park Boat RampRAMP—6-10NoNo
Juneau Street 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—
Rusty CrayfishConfirmed—

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

Lake Tomah — Facts & Figures | Stay Northern