WI · ranked by public data
5 Jefferson 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.
Jefferson County, WI
12.8 ft water clarity (Aug 2025) · 420 acres, 44 ft max depth · 2 public landings
Jefferson County, WI
8 ft water clarity (Jun 2026) · 1,365 acres, 60 ft max depth · 5 public landings
Jefferson County, WI
6.9 ft water clarity (Sep 2025) · 136 acres, 27 ft max depth · 1 public landing
Jefferson County, WI
3 ft water clarity (Jun 2026) · 84 acres, 22 ft max depth · No verified public access · DNR impairment listed
Jefferson County, WI
2.3 ft water clarity (Jul 2025) · 344 acres, 6 ft max depth · 1 public landing
Methodology
FAQ
Lake Ripley — By most recent Secchi reading, Lake Ripley in Jefferson County is the clearest monitored lake in Jefferson County, with 12.8 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.