2016
DOI: 10.17265/2159-5879/2016.01.005
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Clay Fraction Distribution in the Sediments of the Senegal River Estuary after the Diama (Senegal) Dam Construction

Abstract: Abstract:Clay fraction contents distribution in the Senegal River estuary after the building of the anti-salt Diama dam has shown that upstream sediments are very muddy. Clay fraction content is as high as 60 % of sediments in the middle of the channel with a pronounced downstream decreasing trend on the banks comparing to the contents in the middle of the channel. Towards the river mouth, the fine fraction tends to disappear leading to a shelly sand sediment type essentially. During low water period, clay fra… Show more

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“…This has changed the lower estuary's water circulation, which has an impact on the processes of sedimentation and erosion. According to several studies, the retention zone of the dam is subject to almost critical sedimentation, and the river estuary is subject to an erosion regime [15]. The spit hindered a quick evacuation of the river waters during flooding and acted as a natural barrier to protect the beach from hydrodynamic agents [16].…”
Section: Introductionmentioning
confidence: 99%
“…This has changed the lower estuary's water circulation, which has an impact on the processes of sedimentation and erosion. According to several studies, the retention zone of the dam is subject to almost critical sedimentation, and the river estuary is subject to an erosion regime [15]. The spit hindered a quick evacuation of the river waters during flooding and acted as a natural barrier to protect the beach from hydrodynamic agents [16].…”
Section: Introductionmentioning
confidence: 99%