At the same time, the development of hydropower, inconsistencies in the allocation and use of water resources between the hydraulic power and related fields have not yet been satisfactorily resolved; along with the change of the natural flow regime under adverse trends, increase the threat of flooding rain, lack of water and saline penetration deeper than the dry season, the bulk transportation of sand and mud and silt down to the coast and the lower has been changed, losing weight by river Dynamics , naval coastal line, is one of the main causes increase the process scoured the river and shore erosion.
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