Interactive depth contours for Willow Lake in Oneida County, Wisconsin, derived from C-MAP Genesis community sonar (derived) survey data. Pan the map, inspect contour depths, or open the 3D underwater view.
Historical Wisconsin DNR maps
1 converted map sheet. These historical surveys are not for navigation.
Navigable depth map
Pan, zoom, and inspect the converted Wisconsin DNR historical map image in the browser. Historical survey — not for navigation.

Source: Wisconsin DNR · WBIC 1529500 · image navigation only; spatial alignment pending · Historical lake maps are not for navigation.
Source: Wisconsin Department of Natural Resources. Converted for browser access with source URLs, checksums, and retrieval dates retained. Historical lake maps are not for navigation.
Depth FAQ
Willow Lake is 6 feet deep at its deepest point, according to Wisconsin DNR records.
Yes. LakeList publishes a free interactive depth contour map of Willow Lake at a typical 5-foot interval, with an optional 3D underwater view, derived from C-MAP Genesis community sonar (derived) survey data.
The interactive depth contours are derived from C-MAP Genesis community sonar (derived). Each contour set passes a visual QA review against the source document before it is published. The depths are derived from community sonar recordings (C-MAP Genesis Social Map, used with permission), with gaps between recordings interpolated; not for navigation.