The geometric supersites are all built by mosaicking panchromatic Digital Orthophoto Quadrangles (DOQs) that have been reduced in resolution from 1 meter to 15 meters to match that of the ETM+ PAN band. DOQs themselves are designed to meet the national map accuracy standards at 1:24,000-scale and have a horizontal root-mean-square accuracy of approximately 6 meters. The term supersite is one the Landsat geometric Image Assessment System (IAS) team has given to any WRS-2 path/row in which wall-to-wall coverage of DOQs have been assembled for geometric characterization and calibration purposes.

There are currently 30 Medium Resolution Geometric Sites in the catalog. To view these sites, click on a hyperlink (G) below. At this time, the geometry sites are only over the continental United States, CONUS.