Question: It is one of the world's largest dams, built on the Nile River in southern Egypt. It creates hydroelectric power and helps irrigate Egyptian farmland. Name this dam.
Answer: ASWAN DAM
Aswan Dam refers to two dams, both located near Aswan, Egypt. Most commonly today the name refers to the High Dam, which is the newer of the two. Construction on the High Dam was completed in 1970, and has had immeasurable impacts on the economy and culture of Egypt. The earlier Old Aswan Dam, or Aswan Low Dam, was completed in 1902. The aim of both projects was to regulate river flooding, to provide storage of water for agriculture, and later, to generate electricity. The former cataract and the Old Aswan Dam are about 1,000 kilometres (620 mi) (686 kilometres (426 mi)) up-river and south-southeast of Cairo. The new Aswan High Dam is further 4 kilometres (2.5 mi) upriver from the older dam.
Before the dams were built, the River Nile flooded each year during summer, as water flowed down the valley from its East African drainage basin. These floods brought high water, plus natural nutrients and minerals that continuously enriched the fertile soil along the river and made the Nile valley ideal for farming, as it had since ancient times. As Egypt's population grew and conditions changed, there came a need to control the flood waters to both protect and support farmland and economically important cotton fields. In high-water years, the whole crop might be wiped out, while in low-water years widespread drought and famine occasionally occurred. With the reservoir storage provided by these dams, the floods could be lessened, and the water could be stored for later release.