ADF Esri ArcInfo Binary Grid File Format Export Options
Surfer imports and exports Esri ArcInfo Binary Grid files. These files are uniform grids.
Use the Grids | Edit | Convert command in the plot document, or File | Save | Save As in the Grid Editor to export .ADF files. The Spatial References page is displayed when exporting a .ADF file when the grid file contains a coordinate system. The dialog controls how spatial reference information is stored.