The majority of the 1-Degree DEMs were originally produced by the US Defense Mapping Agency. The DNR anticipates having statewide coverage 30-meter DEM coverage for Wisconsin by the end of 1999. The spatial extent this data layer is the state of Wisconsin, plus a buffer around the perimeter extending 10,000 meters beyond the state boundary. Elevation units are in meters.
Attribute accuracy is unknown.
No independent evaluation of the accuracy of the source data was performed. The DEM is visually inspected for completeness for the purpose of performing a final quality control and identifying any edits which may be needed. Horizontal positional accuracy is unknown. No independent evaluation of the accuracy of the source data was performed. Vertical positional accuracy is unknown.