Sauk County High Accuracy Reference Network (HARN)

The establishment of twenty-five Global Positioning System (GPS) control stations called HARN (High Accuracy Reference Network) was completed in December 1999. The HARN provides an accurate county coordinate system which will assist with present and future parcel mapping.

To view the Primary and Secondary HARN Stations, including Geographic, State Plane and Sauk County Coordinate information, please see the links below.