ABSTRACT
Sediment accumulation hampers optimal water resources management of reservoirs. In the Roseires Reservoir across the Blue Nile River, in Sudan, about 30% of the storage capacity has been lost by sedimentation before dam heightening (2012), despite regular sediment sluicing and flushing. At the same time, increasing soil erosion in the upper river basin in Ethiopia is significantly reducing land productivity.
Acknowledgements
The authors are grateful to the Ministry of Water Resources and Electricity, Hydraulic Research Station, Wad Madani, and the Dam Implementation Unit, Khartoum, Sudan, for providing data free of charge. The authors wish to thank Mohamed Osman and Yasir Abo ElGasim for their helpful support during the field work. The authors also acknowledge the Ministry of Water Resources in Ethiopia and ENTRO for the help provided during the field campaign in the upper basin.
Disclosure statement
No potential conflict of interest was reported by the authors.