WI · ranked by public data

Deepest Lakes in Trempealeau County, Wisconsin, Ranked

1 Trempealeau County lake are at least 50 acres with a documented maximum depth, out of 15 documented lakes in the county. Updated July 2026.

19 ft
117 acres
Trempealeau County, WI
Marinuka Lake
enhancedDepth mapStockedDNR impairmentWater data
44.09, -91.35117 acres | 9 ft max1 public access pointLargemouth Bass, Panfish
9 ft maximum depth · 117 acres · 1 public landing · DNR impairment listed

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

Trempealeau County lake records

What is the deepest lake in Trempealeau County?

Marinuka Lake — Marinuka Lake in Trempealeau County is the deepest documented lake in Trempealeau County, at 9 feet maximum depth.

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