USCGS Coast survey. NEW JERSEY Delaware Bay. Philadelphia New York NYC 1881 map'United States Coast and Geodetic survey sketch showing the Triangulation and Geographical Positions in section No. II from New York City to cape Henlopen' National Geodetic Survey National Geodetic Survey, formerly called the U. S. Coast and Geodetic Survey (U. S. C. G. S.), is a United States federal agency that defines and manages a national coordinate system, providing the foundation for transportation and communication; mapping and charting; and