WI · ranked by public data
3 Iowa County lakes cover at least 50 acres, out of 14 documented lakes in the county. Updated July 2026.
Iowa County, WI
136 acres · 32 ft max depth · 1 public landing · DNR impairment listed
Iowa County, WI
81 acres · 28 ft max depth · 1 public landing · DNR impairment listed
Iowa County, WI
56 acres · 14 ft max depth · 1 public landing
Methodology
FAQ
Twin Valley Lake — Twin Valley Lake in Iowa County is the biggest lake in Iowa County, at 136 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.