Marshall Millpond

Dane County, Wisconsin

OverviewFacts & Figures

Physical Characteristics

Surface Area (Acres)129
Maximum Depth (ft)5
Mean Depth (ft)
Shoreline (miles)
Bottom Composition15% sand, 5% gravel, 0% rock, 80% muck
Water Clarity — Secchi Depth (ft)
Trophic Status
Drainage BasinDRAINAGE
Lake Classflowage
Public Access
Township
GPS Coordinates43.17470° N, 89.07130° W
WBIC (DNR ID)839100

Fish Species

2 species documented

AbundantCommonPresentRare
SpeciesAbundanceLast Survey
Largemouth BassAbundant
PanfishPresent

Boat Landings

1 landing

NameTypeRampTrailersFee
Riley-Deppe County Park Boat RampRAMP6-10NoNo

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
Curly-Leaf PondweedConfirmed
Purple LoosestrifeConfirmed

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

Marshall Millpond — Facts & Figures | Stay Northern