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Sediment Mobilization Coastal Erosion Coastal erosion occurs when sediments from upstream fail to replenish shore sediments. The latter are constantly eroded by wave action and, thus, coast lines undergo dramatic change. Reduction of sediments is primarily due to the construction of structures for hydrological modifications and diversions, in particular dams. The effect of dams on the relative ecology of an area is a subject which has been studied in detail. This is due to the dramatic consequences seen in all rivers once large-scale dams have been constructed. Given below is a detailed account of the effects of dams on aquatic habitats. Dams are constructed for various reasons and very few are built for a single purpose. Agriculture may be viewed as a primary factor, however, as it is responsible for the majority of water abstracted from reservoirs created by dam construction. The effect of damming a waterway is to effectively halt...

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