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The data for method 2 is from a list maintained by the Office of Ocean and Coastal Resource Management of NOAA. [note 1] The state coastline lengths were computed by an unspecified method that includes tidal areas not included in the first method. [3] These numbers also include the Great Lakes coastlines, which do not have similar tidal areas.
National seashores and lakeshores are coastal areas federally designated by Congress as being of natural and recreational significance as a preserved area. [1] All of the national lakeshores are on Lakes Michigan and Superior, and nine of the ten national seashores are on the Atlantic Ocean, including two on the Gulf of Mexico.
Some coastal animals are used to humans in developed areas, such as dolphins and seagulls who eat food thrown for them by tourists. Since the coastal areas are all part of the littoral zone, there is a profusion of marine life found just off-coast, including sessile animals such as corals, sponges, starfish, mussels, seaweeds, fishes, and sea ...
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The West Coast of the continental United States makes up part of the Pacific Ring of Fire, an area of heavy tectonic and volcanic activity that is the source of 90% of the world's earthquakes. [28] The American Northwest sees the highest concentration of active volcanoes in the United States, in Washington , Oregon and northern California along ...
The place name East Coast derives from the idea that the contiguous 48 states are defined by two major coastlines, one at the western edge and one on the eastern edge. Other terms for referring to this area include the Eastern Seaboard, which is another term for coastline, [3] Atlantic Coast, and Atlantic Seaboard because the coastline lies along the Atlantic Ocean.
U.S. Census Bureau regions and divisions. Since 1950, the United States Census Bureau defines four statistical regions, with nine divisions. [1] [2] The Census Bureau region definition is "widely used ... for data collection and analysis", [3] and is the most commonly used classification system.
The American Coast Pilot had long been lacking in current information when the Coast Survey took control of it in 1867, and the Survey had recognized that deficit but had been hindered by a lack of funding and the risks associated with mooring vessels in deep waters or along dangerous coasts in order to collect the information necessary for ...