Waters flowing in streams and rivers have the ability to scour channel beds, to carry particles (heavier than water) and to deposit materials. This phenomenon of sediment transport can affect substantially the design of reservoirs. The paper describes four case studies of siltation which rendered useless water storage structures in less than 25 years. Although each dam had advanced structural f...

Silting in river is a dynamic process, so it needs to regular desilting. At present, underwater siltation monitoring still its early days and based on experience. This paper puts forward the criterion of discrimination, which flood discharge section decreased by 20%. It used method steady uniform flow open rectangular trapezoidal channel for calculation. The results show that reference values d...

Alongshore sediment transport rates are important in budget studies or design of coastal structures. Underestimated give rise to severe siltation updrift from cross-shore structures and erosion downdrift. Overestimates may lead over-design thus high costs. Currently, these estimates generally obtained equations, morphodynamic numerical modelling bathymetrical changes accumulation areas (Vandebr...

River cross-section morphology and water sediment conditions are deeply connected. In recent years, the lower Wei has experienced regular flooding drastic changes in river channel shape, causing significant harm to economy development of reaches. This research investigated morphological evolution features based on annual extensive data from hydrological stations Xianyang, Lintong, Huaxian Weihe...

Blind, through, combined transverse dams are widely used as regulation structures to protect riverbanks and regulate river channels. Under the influence of these structures, a redistribution liquid solid runoff, including suspended sediments, occurs. This article aims develop method for forecasting mud silting vortex zone behind dam. The concept coefficients siltation in width, area, volume is ...

Variation of streamflow and sediment load in the Yellow River basin has received considerable attention due to its drastic reduction during the past several decades. This paper presents a detailed investigation on the changes of streamflow and sediment load from 1952 to 2011 using monthly observations at four gauging stations along the Yellow River. The results show significant decreasing trend...

Increased energy demand has led to plans for building many new dams in the western Amazon, mostly in the Andean region. Historical data and mechanistic scenarios are used to examine potential impacts above and below six of the largest dams planned for the region, including reductions in downstream sediment and nutrient supplies, changes in downstream flood pulse, changes in upstream and downstr...