WI · ranked by public data

Deepest Lakes in Green County, Wisconsin, Ranked

1 Green County lake are at least 50 acres with a documented maximum depth, out of 6 documented lakes in the county. Updated July 2026.

112 ft
63 acres
Green County, WI
Beckman Lake
enhancedDepth mapWater data
42.58, -89.7763 acres | 12 ft max1 public access pointPanfish, Largemouth Bass
12 ft maximum depth · 63 acres · 1 public landing

Methodology

How this list is built

Ranked strictly by documented maximum depth from DNR lake records. No estimates, no hearsay depths.
Lakes without a documented maximum depth are excluded rather than guessed at.
Lakes under 50 acres — or without documented acreage — are excluded from rankings.
Public access is shown for every lake but never affects the ranking — a deep lake ranks whether or not you can launch on it.

FAQ

Green County lake records

What is the deepest lake in Green County?

Beckman Lake — Beckman Lake in Green County is the deepest documented lake in Green County, at 12 feet maximum depth.

Deepest lakes statewide Biggest lakes in Green County Clearest lakes in Green County Lakes with the most public access in Green County All Green County lakes

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.