| Survey of the Coast (1807–1836) United States Coast Survey (1836–1878) United States Coast and Geodetic Survey (1878–1970) | |
 The seal of the United States Coast and Geodetic Survey | |
 The United States Coast and Geodetic Survey flag, in use from 1899 to 1970 | |
| Agency overview | |
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| Formed | February 10, 1807 |
| Preceding agency |
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| Dissolved | October 3, 1970 |
| Superseding agency | |
| Jurisdiction | United States federal government |
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The United States Coast and Geodetic Survey (abbreviated USC&GS; known as the Survey of the Coast from 1807 to 1836, and as the United States Coast Survey from 1836 until 1878) was the first scientific agency of the United States Government. It existed from 1807 to 1970, and throughout its history was responsible for mapping and charting the coast of the United States, and later the coasts of U.S. territories. In 1871, it gained the additional responsibility of surveying the interior of the United States and geodesy became a more important part of its work, leading to it being renamed the U.S. Coast and Geodetic Survey in 1878.
Long the U.S. government's only scientific agency, the Survey accumulated other scientific and technical responsibilities as well, including astronomy, cartography, metrology, meteorology, geology, geophysics, hydrography, navigation, oceanography, exploration, pilotage, tides, and topography. It also was responsible for the standardization of weights and measures throughout the United States from 1836 to 1901. In 1959, it was assigned the responsibility for U.S. government oceanographic studies worldwide.
By the mid-19th century, the Coast and Geodetic Survey operated a fleet of survey ships that constituted a distinct seagoing service of the United States until 1970. The Survey supported U.S. military operations in wartime, and in 1917 the Coast and Geodetic Survey Corps was created as a new uniformed service of the United States to carry out both wartime and peacetime surveying and related operations.
In 1970, the Coast and Geodetic Survey was abolished when it merged with other government agencies to create the National Oceanic and Atmospheric Administration (NOAA), but its elements were reorganized and incorporated into NOAA as the National Ocean Survey, later renamed the National Ocean Service. In addition to the National Ocean Service, NOAA's National Geodetic Survey, Office of Coast Survey, and NOAA fleet all trace their ancestry in whole or in part to the Coast and Geodetic Survey, and the NOAA Commissioned Officer Corps is the descendant of the Coast and Geodetic Survey Corps. In addition, the modern National Institute of Standards and Technology, although long separated from the Coast and Geodetic Survey, traces its ancestry to the Coast and Geodetic Survey's Office of Weights and Measures.