Each quadrangle consists of three files - .tif, .rrd, and .aux - presented in a single ZIPed file. The TIFF format is readable by many GIS and remote sensing software. To download a quadrangle DEM, click on the quadrangle (below) and Save the ZIP file to disk. Then, uncompress (unZIP) the file into a folder and add to your viewer.
Each town consists of three files - .tif, .rrd, and .aux - presented in a single ZIPed file. The TIFF format is readable by many GIS and remote sensing software. To download a town DEM, select the town name from the menu (below) and Save the ZIP file to disk. Then, uncompress (unZIP) the file into a folder and add to your viewer.