Lake Kegonsa

Dane County, Wisconsin

OverviewFacts & Figures

Physical Characteristics

Surface Area (Acres)3,200
Maximum Depth (ft)32
Mean Depth (ft)17
Shoreline (miles)
Bottom Composition70% sand, 14% gravel, 1% rock, 15% muck
Water Clarity — Secchi Depth (ft)
Trophic Status
Drainage BasinDRAINAGE
Lake Classlake
Public Access
Township
GPS Coordinates42.96460° N, 89.25360° W
WBIC (DNR ID)802600

Fish Species

7 species documented

AbundantCommonPresentRare
SpeciesAbundanceLast Survey
PanfishAbundant
Largemouth BassCommon
Northern PikeCommon
WalleyeCommon
CatfishPresent
MuskyPresent
Smallmouth BassPresent

Boat Landings

4 landings

NameTypeRampTrailersFee
Lake Kegonsa State Park Boat AccessRAMPGr25YesYes
Lake KegonsaRAMP6-10YesNo
Amundsons LandingRAMP1-5NoYes
Fish Camp Launch Park Boat RampRAMP21-25YesYes

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
Spiny WaterfleaConfirmed
Zebra MusselConfirmed

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

Lake Kegonsa — Facts & Figures | Stay Northern