WI · ranked by public data
5 Columbia County lakes are at least 50 acres with a documented maximum depth, out of 44 documented lakes in the county. Updated July 2026.
Columbia County, WI
82 ft maximum depth · 407 acres · 1 public landing · DNR impairment listed
Columbia County, WI
42 ft maximum depth · 70 acres · 2 public landings
Columbia County, WI
27 ft maximum depth · 330 acres · 4 public landings
Columbia County, WI
24 ft maximum depth · 7,197 acres · 15 public landings · DNR impairment listed
Columbia County, WI
20 ft maximum depth · 109 acres · 1 public landing
Methodology
FAQ
Swan Lake — Swan Lake in Columbia County is the deepest documented lake in Columbia County, at 82 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.