PROTECTIVE WORKS ON THE NILE DELTA COAST

The Nile Delta Coast is a dynamic system which in historic times was i n equilibrium or experienced an excess of sediment due to the large qu antities of sediments discharged to the Mediterranean Sea through the various Nile branches. With the construction of the nine barrages (dam ) along the main course of the river commencing at the beginning of th e 20th century, the Nile Delta coastal zone has exhibited a sediment d eficit and thus erosion, especially around the three main headlands, i .e., Rosetta, El Burullus, and Damietta. This erosion has been particu larly alarming since the construction of the Aswan High Dam in 1964, w hich trapped essentially ah the flood sediments in its storage basin. Erosion is not the only trouble affecting the Delta coast. High rates of easterly longshore transport which cause shoaling of the Nile mouth s and the outlets of the northern lagoons are also a serious problem; they directly affect coastal navigation and the eco-system of the lake s and consequently bah production. The aims of this paper are as follo ws: (1) to present a brief review of the major existing coastal proble ms along the Nile Delta Coast, and (2) to provide a general descriptio n of the protective measures that have been implemented in the coastal zone to address these problems.