Roseires Dam

The Roseires Dam (Arabic: خزان الروصيرص) is a dam on the Blue Nile at Ad Damazin, just upstream of the town of Er Roseires, in Sudan. It consists of a concrete buttress dam 1 km wide with a maximum height of 68 m, and an earth dam on either side. The earth dam on the eastern bank is 4 km long, and that on the western bank is 8.5 km long. The reservoir has a surface area of about 290 km².

Roseires Reservoir lake

Roseires Dam
Location	Ad Damazin, Sudan
Coordinates	11°47′53″N 34°23′15″E
Construction began	1961
Opening date	1966
Dam and spillways
Height	78 m (256 ft)
Length	24,410 m (80,090 ft)
Reservoir
Total capacity	7.4 km3 (5,999,278 acre⋅ft)
Surface area	29,000 ha (71,661 acres)
Power Station
Turbines	7 x 40 MW
Installed capacity	280 MW

The dam was completed in 1966, initially for irrigation purposes. A power generation plant, with a maximum capacity of 280 megawatts, was added in 1971.[1][2]

Extension Project

The original maximum height of the dam was 68 m, which increased to 78 m in 2013 and the dam is now 25 km long. The dam contains five 3 m x 5 m low level sluice gates designed to pass floods and sluice sediment. The dam contains a gated ogre spillway with a discharge capacity of 694 m³/s. In addition, the dam was designed with five low level outlets with a discharge capacity of 5,208 m³/s to pass floods and sluice sediment through the reservoir.[3]