Castle Rock Lake

Juneau, Adams County, Wisconsin

OverviewFacts & Figures

Physical Characteristics

Surface Area (Acres)13,955
Maximum Depth (ft)35
Mean Depth (ft)
Shoreline (miles)
Bottom Composition
Water Clarity — Secchi Depth (ft)
Trophic Status
Drainage BasinDRAINAGE
Lake Classflowage
Public Access
Township
GPS Coordinates43.95560° N, 90.03790° W
WBIC (DNR ID)1345700

Fish Species

8 species documented

AbundantCommonPresentRare
SpeciesAbundanceLast Survey
PanfishCommon
WalleyeCommon
CatfishPresent
Largemouth BassPresent
MuskyPresent
Northern PikePresent
Smallmouth BassPresent
SturgeonPresent

Boat Landings

10 landings

NameTypeRampTrailersFee
Mays PointRAMP6-10NoYes
Launch DRAMP1-5YesNo
Castle Rock Flowage AccessRAMP11-15YesNo
33rd/22nd picnicCARRY-INUnknownNo
Buckhorn Launch CRAMPGr50YesYes
Castle Rock Flowage AccessRAMP6-10NoNo
Castle Rock Lake - Osprey LandingRAMP11-15NoYes
Castle Rock Park Boat RampRAMPGr50YesNo
Boat Launch A RampRAMPGr25YesNo
Boat Launch E RampRAMP1-5No

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
Eurasian Water-MilfoilConfirmed
Zebra MusselConfirmed

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