Friday, October 23, 2009
Aswan is a city on the first cataract of the Nile in Egypt. Two dams straddle the river at this point: the newer Aswan High Dam, and the older Aswan Dam or Aswan Low Dam. Before impoundment the Nile River would flood each year during summer, as waters from East Africa flowed down the river. These floods brought nutrients and minerals that made the soil around the Nile fertile and ideal for farming. As the population along the river grew, there came a need to control the flood waters to protect farmland and cotton fields. In a high-water year, the whole crop may be entirely wiped out, while in a low-water year there was widespread drought and famine. The aim of this water project was to prevent the river’s flooding, generate electricity and provide water for agriculture.
The British began construction of the first dam in 1899. Construction lasted until 1902. It was opened in December 10, 1902. The initial design was soon found to be inadequate and the height of the dam was raised in two phases, 1907–1912 and 1929–1933. The High Dam, as-Sad al-’Aali, was completed on July 21, 1970, with the first stage finished in 1964. The reservoir began filling in 1964 while the dam was still under construction and first reached capacity in 1976. The reservoir raised concerns from archaeologists and a rescue operation was begun in 1960 under UNESCO. Sites were surveyed and excavated and 24 major monuments were moved to safer locations (see Abu Simbel) or granted to countries that helped with the works (such as the Debod temple in Madrid and the Temple of Dendur in New York).
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