Abstract
A two dimensional model of the dynamic of sediment deposition in rivers is described and evaluated in the paper. It is based on the hypotheses that sediment concentration is proportional to concentration at the equilibrium and settling velocity tends asymptotically to a maximum value as wash load increases. The model requires the estimation of only two parameters, which may easily be calibrated from turbidity data. It has been applied to determine the sediment deposition over a 35 kilometers long stretch of the Po river, in Northern Italy, in different flow, load and temperature conditions and its performances turned out to be surprisingly high, given the complexity of this kind of phenomenon.
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