WI · ranked by public data
6 Portage County lakes are at least 50 acres with a documented maximum depth, out of 79 documented lakes in the county. Updated July 2026.
Portage County, WI
55 ft maximum depth · 63 acres · 1 public landing
Portage County, WI
35 ft maximum depth · 108 acres · 2 public landings
Portage County, WI
33 ft maximum depth · 73 acres · 1 public landing
Portage County, WI
20 ft maximum depth · 89 acres · 1 public landing
Portage County, WI
19 ft maximum depth · 247 acres · 2 public landings
Portage County, WI
7 ft maximum depth · 84 acres · 2 public landings
Methodology
FAQ
Sunset Lake — Sunset Lake in Portage County is the deepest documented lake in Portage County, at 55 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, and conditions change — 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.