WI · ranked by public data
2 Sauk County lakes are at least 50 acres with a current DNR water-clarity reading, out of 28 documented lakes in the county. Updated July 2026.
Sauk County, WI
6 ft water clarity (Oct 2025) · 72 acres, 10 ft max depth · 1 public landing
Sauk County, WI
2 ft water clarity (Sep 2024) · 635 acres, 36 ft max depth · 3 public landings · DNR impairment listed
Methodology
FAQ
Long Lake — By most recent Secchi reading, Long Lake in Sauk County is the clearest monitored lake in Sauk County, with 6 feet of visibility.
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.