Mott MacDonald a British civil engineer and later politician. The company formed out of affairs relating directly to British infrastructure development in Egypt between 1890 and 1930, in particular MacDonald's involvement with Aswan Low Dam, starting in 1898. MacDonald was involved in the original construction of the Aswan Dam and later became an advisor to the Egyptian Ministry of Public Works after the dam was completed in 1902. He became closely associated with the development and first heightening of the Aswan Low Dam for the development of hydroelectricity. MacDonald retired from his service with the Egyptian government in 1921 and returned to
Aswan Dam mere 460 tons in 1968, but then gradually recovered to 8,590 tons in 1992. A scientific article in the mid-1990s noted that "the mismatch between low primary productivity and relatively high levels of fish production in the region still presents a puzzle to scientists." A concern before the construction of the High Dam had been the potential drop in river-bed level downstream of the Dam as the result of erosion caused by the flow of sediment-free water. Estimates by various national and international experts put this drop at between 2 and 10 meters. However, the actual drop has been measured