Vaughan participated in a number of geological surveys of the West Indies (1901 and 1914), Panama Canal Zone (1911), the Dominican and Haitian Republics (1919 to 1921), the Virgin Islands and eastern Puerto Rico (1919), and the Atlantic and Gulf Coast Plains (1907–1923). Vaughan created programs in physical, chemical, and geological oceanography, augmented the biology program, and expanded the Institution's facilities. He retired in 1936 and was replaced by
Harald Sverdrup. Throughout his career he also served on scientific committees under the
National Research Council and the
National Academy of Sciences. While serving on the Committee on Oceanography for the National Academy of Sciences in the 1930s, Vaughan favored the creation of an east-coast counterpart to the Scripps Institution, and the committee encouraged the
Rockefeller Foundation to provide one million dollars to found the
Woods Hole Oceanographic Institution. A smaller donation also went to the Oceanographic Laboratories at the University of Washington. ==Later life and legacy==