This section provides information on surveying in Wisconsin primarily as related to mapping. From here you have access to applications for statewide geodetic control stations and Public Land Survey System corners (PLSS), and CORS data for Wisconsin (including links to the WISCRS). Users can also obtain information pertaining to the WI-Height Modernization Program (HMP) which improves the density of geodetic control stations listed in the National Spatial Reference System (NSRS) with accurate orthometric heights (elevations) throughout the state. In addition, our resource links provide quick access to a variety of survey-related topics.