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2014. National Atlas of the United States. This line shapefile includes Global Map data showing the coastline of the United States, Puerto Rico, and the U.S. Virgin Islands. The United State... National Atlas of the United States.
2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, and 2022. United States. National Oceanic and Atmospheric Administration. This line shapefile represents existing and planned electric transmission lines through 2022 in the New England coastal region (United States). A t... United States. National Oceanic and Atmospheric Administration.