WI · ranked by public data
6 Sauk County lakes cover at least 50 acres, out of 28 documented lakes in the county. Updated July 2026.
Sauk County, WI
635 acres · 36 ft max depth · 3 public landings · DNR impairment listed
Sauk County, WI
374 acres · 47 ft max depth · 2 public landings
Sauk County, WI
249 acres · 16 ft max depth · 1 public landing
Sauk County, WI
139 acres · 19 ft max depth · 2 public landings · DNR impairment listed
Sauk County, WI
72 acres · 10 ft max depth · 1 public landing
Sauk County, WI
52 acres · 10 ft max depth · No verified public access
Methodology
FAQ
Lake Redstone — Lake Redstone in Sauk County is the biggest lake in Sauk County, at 635 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.