WI · ranked by public data
3 Juneau County lakes cover at least 50 acres, out of 38 documented lakes in the county. Updated July 2026.
Juneau County, WI
13,955 acres · 35 ft max depth · 10 public landings
Juneau County, WI
350 acres · 12 ft max depth · 1 public landing
Juneau County, WI
196 acres · 15 ft max depth · 1 public landing
Methodology
FAQ
Castle Rock Lake — Castle Rock Lake in Juneau County is the biggest lake in Juneau County, at 13,955 acres.
Source data: Wisconsin DNR lake and monitoring records as aggregated by LakeList. Figures reflect the most recent documented values, not new surveys — verify access and rules before you go. Lake outlines are shoreline shapes from LakeList and the USGS National Hydrography Dataset; they illustrate a lake's form and are not depth or navigation charts.