Roseires Dam

The Roseires Dam (Arabic خزان الروصيرص ) dammed the Blue Nile in the state of al - azraq Nile in Sudan.

Location

The Roseires dam is the first dam in the Sudanese Blue Nile below the Ethiopian- Sudanese border. Its reservoir extends over a length of about 55 km in the north-south direction with a width of 9 km at the city ad - Damazin.

History

The idea of ​​Roseires dam goes back to a person appointed by the British colonial administration in the 1950s study in which the engineering firm Sir Alexander Gibb and Partners suggested to create a Kenana Scheme called drainage project in the south of the Gezira project in comparable size and with to irrigate the help of a Roseires dam. The 1956 newly independent Sudan initially could not fund the project. Only after the Sudan had signed with Egypt, the 1959 Treaty on the use of the Nile water, the Roseires dam could be built with a loan from the World Bank and West Germany and completed in 1966.

Meanwhile, the Kenana project was considered too expensive. The water of the Roseires dam was therefore used for the improved irrigation of the Gezira project and for his al - Managil enlargement and later for the new Rahad project on the right side of the river.

Since the dam was just like the Khashm -el- Girba - made ​​reservoir on the Atbara lost by sedimentation a large part of its volume, the crown of Roseires dam was increased by 10 m. This work was completed in February 2013.

Building

In the Roseires dam is an approximately 1000 m wide buttress dam, which is taken by two Erdschütt dams. The 1966 completed dam originally had a height of 68 m, the dam was 13.5 km long. The dam has 5 bottom outlets with 6 m wide and 10.5 m high gates.

1971, the dam was equipped for power generation with 7 turbines.

It is estimated that the Blue Nile annually transported a sediment load of 140 million tons per year in the reservoir and that the original storage volume has been reduced from 3,300 million cubic meters by 1995 to 900 million m³. The reservoir is therefore emptied once a year at the rising tide across the bottom outlet to flush out as many sediments.

The dam was a total of 24,410 m by 2013 the finished topping the crown to 10 m. In this case, the power plant capacity was increased to 1800 MW. The work was funded by Kuwait, Saudi Arabia and other Arab states and executed by the China International Water & Electric Corporation.