Knowledge Note

Dams provide critical services such as flood protection, irrigation, hydropower generation, and water supply for 156 million people in the Eastern Nile sub-basin spanning Egypt, Ethiopia, Sudan and South Sudan. Thirty transboundary dams operate in the region – including Roseires in Sudan, Aswan in Egypt, and many smaller dams no higher than 15 meters – with a combined storage capacity of 210 billion cubic meters. More, including on the mighty Blue Nile, are being built. Attention to dam safety is critical: issues with design or inadequate monitoring and maintenance could increase the risk of dam failure, which could have significant flood consequences and affect river bank settlements, fisheries, power generation, agriculture, the environment, and the regional economy overall.

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