Climatic and anthropogenic impacts on the decrease of sediment discharge to the Mediterranean coast from the largest river of Maghreb

The current study focuses on the issue of decrease in sediment discharge to Mediterranean Sea by largest river Algeria, Wadi Cheliff (i.e. River). This clarifies effect climatic and anthropogenic factors changes sedimentary dynamics River discharging sea. data used (rainfall, water discharge, discharge) concern Sidi Bel Attar gaging station River, only 18 km from Sea. A power-type statistical regression model was fill 74.2% gap Suspended Solids (SS) measurements establishment a SS database for period 1951–2012. results show that transport suspended discharged sea is about 487 t/km2/yr. Statistical tests breaks highlight rainfall decreased 26% input declined 74% 63% 1981–2012. correlation analysis shows contribution at outlet equal 77.9% 77.8%, respectively, during 1980–2012, compared 1968–1980. However, double mass method reflects other than These mainly include large dams, which intercepted 71% total volume 1968–2010. In addition dams reduction more important rainfall. management also contributes increase deficit through prioritization interception expense releases, socio-economic purposes, 68.4% diverted human use. has led an mean bed level bankfull downstream, where gave up 51% its width floodplain between 1996 2009. light scarcity North Africa many areas, provides reference framework studies: providing useful information transfer land sea, links with needs.