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Summary:
Fluvial sediment management is the holistic management of sediment supply from rivers to the coast, taking the full range of human activities at the river basin level into account.
Sediment transported by rivers makes up 95% of the sediment entering the ocean, with an annual discharge of 15-20 billion tonnes (Syvitski et al. 2003; Milliman and Mei-e 1995). Human activities can both increase and reduce this sediment supply. However, the general reduction of fluvial sediment supply, particularly due to sediment trapping by dams, is a major global challenge. Many of the world's rivers have experienced a dramatic decrease in sediment supply over the past few decades (Walling 2006). Consequently, downstream coastal areas often suffer major sediment deficits, with associated erosion, inundation and flooding.
https://www.ctc-n.org/resources/climate-change-adaptation-technologies-…