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Start Over Subject Imagery and Base Maps Creator Geological Survey (U.S.)
2014. Geological Survey (U.S.). This line shapefile shows elevation contour lines for the conterminous United States. The map layer was derived from the 100-meter resolution eleva... National Atlas of the United States.
1992 and 1993. Geological Survey (U.S.). This raster layer is a georeferenced grid map image of land cover characteristics for North America, excluding Hawaii, and including the Caribbean ... Geological Survey (U.S.).
1992. Geological Survey (U.S.). This raster layer is a georeferenced image of 1992 land cover for the conterminous United States, at a resolution of 200 meters. The map layer was ... Geological Survey (U.S.).
2002. United States. Forest Service and Geological Survey (U.S.). This raster layer portrays general forest cover types for the United States in GeoTIFF format. Data were derived from Advanced Very High Resolution... National Atlas of the United States.
2009. Geological Survey (U.S.) and Applied Science Associates. This raster layer contains the maximum (spring tide) current speed in the Massachusetts Ocean Partnership (MOP) planning area (and extended rectang... Applied Science Associates.
2009. Applied Science Associates and Geological Survey (U.S.). This raster layer contains the mean tidal current speed in the Massachusetts Ocean Partnership (MOP) planning area (and extended rectangular region...