NLCD 1992, NLCD 2001, and NLCD 2006 are National Land Cover Database classification schemes based primarily on Landsat data along with ancillary data sources, such as topography, census and agricultural statistics, soil characteristics, wetlands, and other land cover maps. NLCD 1992 is a 21-class land cover classification scheme that has been applied consistently across the conterminous U.S. at a spatial resolution of 30 meters. NLCD 2001 is a 16-class land cover classification scheme that also has been applied to the conterminous U.S. at a spatial resolution of 30 meters, and includes Alaska, Hawaii, and Puerto Rico. NLCD 2006 quantifies land cover change for the conterminous U.S. between the years 2001 to 2006. Generation of NLCD 2006 helped identify and correct issues in the NLCD 2001 land cover and impervious surface products only, and no changes were made to the NLCD 2001 canopy product. For additional information, go to http://www.mrlc.gov/.

ArcIMS Web Map Service: USGS_EDC_LandCover_NLCD2001

ArcIMS Web Map Service: USGS_EDC_Ortho_Arizona

ArcIMS Web Map Service: USGS_EDC_Ortho_Tennessee

ArcIMS Web Map Service: USGS_EDC_Elev_NED_9

ArcIMS Web Map Service: USGS_EDC_Ortho_Georgia

WMS

The USGS Landsat archive has over 3 million images from around the globe and spans over 4 decades. The products displayed in this service are 3-band composites called LandsatLook. These data cannot be used for rigorous scientific analysis, but are intended for visual interpretation and education. For more information on LandsatLook products, please visit: http://landsat.usgs.gov/LandsatLookImages.php. For more information about full Landsat data products, resolutions, map projection and so forth, please visit: http://landsat.usgs.gov/Landsat_Processing_Details.php.

ArcIMS Web Map Service: USGS_EDC_Ortho_Arkansas

ArcIMS Web Map Service: USGS_EDC_Ortho_Maryland