VOLUME REQUIREMENTS FOR THE SUBAERIAL BEACH AT EAST HAMPTON, NEW YORK.

A relationship between the amount of shoreline migration and the volume of sand needed to cause that migration is a useful empirical parameter. With it, elements of the coastal sand budget can be estimated from measurements of changes in the position of the shoreline from, for example, sequential aerial photographs. The conventional wisdom has it that an advance of the shoreline by one foot required an additional volume of 1 yd**3/ft of beach. Even though local conditions are extremely variable, this rule-of-thumb is especially useful in estimating the volume of sand needed for beach-filling projects or the volumetric changes due to long-term shoreline migration. The authors investigated the relationship between the change in beach width and corresponding changes in volume above mean sea level along a three-mile section of the beach on the south shore of Long Island at East Hampton, New York.