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2002. National Atlas of the United States. The color conterminous United States shaded relief data were derived from National Elevation Dataset (NED) data, and show the terrain of the conter... National Atlas of the United States.
2002. National Atlas of the United States. The color conterminous United States shaded relief data were derived from National Elevation Dataset (NED) data, and show the terrain of the conter... National Atlas of the United States.
1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, and 2002. USGS National Center for EROS. The North America Shaded Relief data were derived from the GTOPO30 elevation data. GTOPO30 is a global digital elevation model (DEM) with a horizon... National Atlas of the United States.
2003. Geological Survey (U.S.) Minerals Information Team. This point shapefile represents construction minerals operations in the United States. The data represent commodities covered by the Minerals Infor... National Atlas of the United States.
2001. Godt, Jonathan W. This polygon shapefile shows point locations of costly individual landslide events in the 50 United States and Puerto Rico. Landslide locations wer... National Atlas of the United States.
2001. Godt, Jonathan W. This polygon shapefile contains information on costly regional landslide events in the 50 United States and Puerto Rico. The extents of the regiona... National Atlas of the United States.
2007. United States. National Oceanic and Atmospheric Administration, United States. National Ocean Service, and United States. Department of Commerce. This polygon shapefile represents county boundaries in the Northeastern United States. The TIGER/Line Shapefiles are an extract of selected geograp... United States. National Ocean Service.
1980. Geological Survey (U.S.). This polygon shapefile contains the 1980 state and county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer ... Geological Survey (U.S.).
1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, and 1990. Geological Survey (U.S.). This polygon shapefile portrays the 1990 state and county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer ... Geological Survey (U.S.).
2000. Geological Survey (U.S.). This polygon shapefile portrays the 2000 state and county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer ... Geological Survey (U.S.).