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Reservoir sedimentation is a growing problem around the world. The existing literature on reservoir desiltation has, therefore, been systematically examined and evaluated. The review is divided into three topics dealing with different aspects of reservoir desiltation. The first topic treats different hydraulic reservoir desilting-techniques. The emphases are put on flushing of already deposited sediment and routing of incoming sediments from upstream, through a reservoir, but alternative methods, such as transporting sediment through flexible pipes and siphoning, are also described. The second topic treats resulting reservoir geomorphology after hydraulic reservoir flushings. This includes cross-sectional and longitudinal variations in geomorphology due to flushing, but also the available literature on physical and analytical models. The third topic treats downstream geomorphological and sedimentological effects during and after reservoir flushing operations. Attention is given to water flow-, sediment concentration-, and deposition patterns, as well as transported and deposited sediment characteristics.
The existing literature on reservoir desiltation has, therefore, been systematically examined and evaluated. The review is divided into three topics dealing with different aspects of reservoir desiltation. The first topic treats different hydraulic reservoir desilting- techniques. The emphases are put on flushing of already deposited sediment and routing of incoming sediments from upstream, through a reservoir, but alternative methods, such as transporting sediment through flexible pipes and siphoning, are also described. The second topic treats resulting reservoir geomorphology after hydraulic reservoir flushings. This includes cross-sectional and longitudinal variations in geomorphology due to flushing, but also the available literature on physical and analytical models. The third topic treats downstream geomorphological and sedimentological effects during and after reservoir flushing operations. Attention is given to wate r flow-, sediment concentration-, and deposition patterns, as well as transported and deposited sediment characteristics.