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Tuesday, 23 September 2014 00:00

Restoring sediment fluxes downstream of large dams: The case of the Lower Ebro River (Global Water Forum)

The construction of dams produces a number of social benefits. But, in producing these benefits, dams also alter the natural balance of sediment flow in rivers by impounding sediment within and upstream of the reservoir and discharging clean water downstream...

...Sediment retained in reservoirs also leads to the disruption of the transport continuity while reducing the land–ocean sediment transfer. Under these conditions the morphological system is dramatically altered, leading to the imbalance between the fluvial and the marine processes that cause coastal retreat and land subsidence. A clear example is the case of the Ebro River, located in the North-East of the Iberian Peninsula

Dr. Albert Rovira & Dr. Carles Ibáñez, IRTA-Aquatic Ecosystems, Catalonia, Spain

 

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