Approaches for sediment management
Sediment management at the planning, operation and maintenance phase of hydropower projects are fundamental to reduce the loss of reservoir storage capacity resulting from sedimentation.
Hydropower energy production is being reduced by loss of reservoir storage capacity at an annual rate of one per cent globally as a result of sedimentation and extreme rainfall and erosion due to climate change will increase the rate of sediment erosion.
Sediment management seeks to maintain the sustainability of reservoirs, extending benefits such as energy and water supply and flood protection in the long term.
Nature-Based Infrastructure (NBI) creates opportunities to develop an integrated watershed approach when planning and operating a dam. It offers considerable potential to reduce erosion rates in the watershed, and other added benefits, in particular to reduce the risk of natural disaster. Prevention via good basin planning and NBI can even alleviate the need for other high-cost interventions in sediment routing and removal strategies.
This focus session aims to explore how sediment management is addressed at international, national and local level and how companies approach this issue. Are there new approaches to sediment management? What are the economic and financial returns of basin planning and NBI?
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