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2014. Geological Survey (U.S.). This polygon shapefile contains the county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands, by showing the counties as ar... Geological Survey (U.S.).
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.
2012. National Atlas of the United States. This polygon shapefile portrays the state boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer was created by e... National Atlas of the United States.
2014. National Atlas of the United States. This polygon shapefile portrays the state boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer was created by e... National Atlas of the United States.
2013. Baldwin Group. This polygon shapefile represents anchorages in the Northeastern United States. The areas described are designated as special anchorage areas for p... Coastal Services Center (U.S.).
2013. SeaPlan. This polygon shapefile represents aquaculture regions in the northeastern United States. Aquaculture in the northeast region is a diverse, vibrant ... Northeast Ocean Data.
2013. United States. National Oceanic and Atmospheric Administration. This polygon shapefile represents Board of Ocean Energy Management (BOEM) lease areas in the Northeastern United States. The Cape Wind Energy Proje... United States. National Oceanic and Atmospheric Administration.
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.).