WI · ranked by public data
3 Juneau County lakes are at least 50 acres with a documented maximum depth, out of 38 documented lakes in the county. Updated July 2026.
Juneau County, WI
35 ft maximum depth · 13,955 acres · 10 public landings
Juneau County, WI
15 ft maximum depth · 196 acres · 1 public landing
Juneau County, WI
12 ft maximum depth · 350 acres · 1 public landing
Methodology
FAQ
Castle Rock Lake — Castle Rock Lake in Juneau County is the deepest documented lake in Juneau County, at 35 feet maximum depth.
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.