Interactive depth contours for Lake Chetac in Sawyer 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
2 converted map sheets. 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 2113300 · 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
Lake Chetac is 26 feet deep at its deepest point and averages about 14 feet, according to Wisconsin DNR records.
Yes. LakeList publishes a free interactive depth contour map of Lake Chetac 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.