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1. 1:1,000,000-Scale National Wilderness Preservation System of the United States, 2014
2014. National Atlas of the United States. This polygon shapefile consists of National Wilderness Preservation System areas of 320 acres or more, in the United States, Puerto Rico, and the U... National Atlas of the United States.
2. Bailey's Ecoregions and Subregions of the United States, 2004
2004. United States. Forest Service. This polygon shapefile is commonly called Bailey's ecoregions and shows ecosystems of regional extent in the United States, Puerto Rico, and the U.... National Atlas of the United States.
3. Classification of Forest Fragmentation in North America, 1992
1992. Ritters, Kurt. This raster layer is a grid map of North America including the Caribbean and most of Mexico in GeoTIFF format. The map layer is an excerpt from a g... National Atlas of the United States.
4. Hazardous Waste, Generated, Shipped, Received 2001-2007
2001. National Atlas of the United States. This polygon shapefile portrays the hazardous waste generated, shipped, and received by state and other areas within the United States, Puerto Rico... National Atlas of the United States.
5. National Wilderness Preservation System of the United States, 2006
1972. National Atlas of the United States. This polygon shapefile contains National Wilderness Preservation System areas of 640 acres or more, in the United States, Puerto Rico, and the U.S.... National Atlas of the United States.
6. Nonattainment Areas for Carbon Monoxide Pollution: United States and Territories, 1971
1971. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the carbon mono... United States. Bureau of Transportation Statistics.
7. Nonattainment Areas for Carbon Monoxide Pollution: United States and Territories, 1990
1990. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the carbon mono... United States. Bureau of Transportation Statistics.
8. Nonattainment Areas for Lead Pollution: United States and Territories, 1978
1978. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the lead (Pb) 3... United States. Bureau of Transportation Statistics.
9. Nonattainment Areas for Lead Pollution: United States and Territories, 2008
2008. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the lead (Pb) 3... United States. Bureau of Transportation Statistics.
10. Nonattainment Areas for Nitrogen Dioxide Pollution: United States and Territories, 1971
1971. Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the nitrogen di... United States. Bureau of Transportation Statistics.
11. Nonattainment Areas for Nitrogen Dioxide Pollution: United States and Territories, 1990
1990. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the nitrogen di... United States. Bureau of Transportation Statistics.
12. Nonattainment Areas for Ozone Pollution: United States and Territories, 1979
1979. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the ozone (O3) ... United States. Bureau of Transportation Statistics.
13. Nonattainment Areas for Ozone Pollution: United States and Territories, 1990
1990. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the ozone (O3)1... United States. Bureau of Transportation Statistics.
14. Nonattainment Areas for Ozone Pollution: United States and Territories, 1997
1997. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the ozone (O3) ... United States. Bureau of Transportation Statistics.
15. Nonattainment Areas for Ozone Pollution: United States and Territories, 2008
2008. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the ozone (O3) ... United States. Bureau of Transportation Statistics.
16. Nonattainment Areas for Patriculate Matter Pollution: United States and Territories, 1987
1987. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the particulate... United States. Bureau of Transportation Statistics.
17. Nonattainment Areas for Patriculate Matter Pollution: United States and Territories, 1990
1990. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the particulate... United States. Bureau of Transportation Statistics.
18. Nonattainment Areas for Patriculate Matter Pollution: United States and Territories, 1997
1997. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the particulate... United States. Bureau of Transportation Statistics.
19. Nonattainment Areas for Patriculate Matter Pollution: United States and Territories, 2006
2006. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the particulate... United States. Bureau of Transportation Statistics.
20. Nonattainment Areas for Sulfur Dioxide Pollution, United States and Territories, 1971
1971. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the sulfur diox... United States. Bureau of Transportation Statistics.
21. Nonattainment Areas for Sulfur Dioxide Pollution, United States and Territories, 1978
1978. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the sulfur diox... United States. Bureau of Transportation Statistics.
22. Nonattainment Areas for Sulfur Dioxide Pollution, United States and Territories, 2010
2010. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the sulfur diox... United States. Bureau of Transportation Statistics.
23. Significant United States Earthquakes, 1568-2009
1568. Geological Survey (U.S.). This point shapefile contains the locations and attributes of significant, historic earthquakes that caused deaths, property damage, and geological... National Atlas of the United States.
24. Spread of Africanized Honey Bees in the United States, 1990-2005
1990. United States. Agricultural Research Service. This polygon shapefile portrays the spread, by year, of the Africanized honey bee (AHB) in the United States, Puerto Rico, and the U.S. Virgin Isla... National Atlas of the United States.
25. United States Parks, 2010-2014
2010. Tele Atlas (Firm : U.S.) and Environmental Systems Research Institute (Redlands, Calif.). This polygon shapefile contains the boundaries of parks, gardens, and forests within the United States at national, state, county, regional, and lo... Environmental Systems Research Institute (Redlands, Calif.).
26. U.S. Geographic Names Information System Summit 2002
2000. United States Geological Survey. U.S. Geographic Names Information System Summit represents an automated inventory of the proper names and locations of physical and cultural geogra... Environmental Systems Research Institute, Inc. (ESRI).
27. U.S. National Atlas Federal Land Areas, 2014
2014. National Atlas of the United States and the United States Geological Survey and Esri. U.S. National Atlas Federal Land Areas represents the federally owned or administered land areas (for example, National Wildlife Refuges, National ... Esri.
28. U.S. National Atlas Federal Land Lines, 2015
2015. National Atlas of the United States and the United States Geological Survey and Esri. U.S. National Atlas Federal Land Lines represents the linear federally owned or administered land features (for example, national parkways and wild... Esri.
29. U.S. Parks 2008
2007. Tele Atlas North America, Inc. U.S. Parks represents parks and forests within United States at national, state, and local levels. ESRI.
30. U.S. Parks, 2013
2012. TomTom North America, Inc. U.S. Parks represents parks, gardens, and forests within the United States at national, state, county, regional, and local levels.
31. U.S. Parks, 2018
2018. TomTom North America, Inc. and Esri. U.S. Parks represents parks, gardens, and forests within the United States at national, state, county, regional, and local levels. Esri.
32. U.S. Recreational Areas, 2018
2018. TomTom North America, Inc. and Esri. U.S. Recreational Areas represents point locations within the United States for common recreational landmarks including golf courses, beaches, amus... Esri.