Aswan Dam the water saved is lost due to evaporation in Lake Nasser, the amount of water available for irrigation still increased by 22 km. Other estimates put evaporation from Lake Nasser at between 10 and 16 cubic km per year. The dam powers twelve generators each rated at , with a total of . Power generation began in 1967. When the High Dam first reached peak output it produced around half of Egypt's production of electric power (about 15 percent by 1998), and it gave most Egyptian villages the use of electricity for the first time. The High Dam has also
Aswan Low Dam 1907–1912 and between 1929–1933, and generation of electricity was added. The first phase was supervised by Sir Benjamin Baker, though much of the detailed work was undertaken by Murdoch MacDonald. With its final raising (designed and supervised by MacDonald's firm, Sir M MacDonald & Partners), the dam is in length, with a crest level above the original riverbed; the dam provides the main route for traffic between the city and the airport. With the construction of the High Dam upstream, the Old Dam's ability to pass the flood's sediments was lost, as was the serviceability provided by the locks. The