Sand transport models are often based on semi-empirical equilibrium transport formulae that
relate sediment fluxes to physical properties such as velocity, depth and characteristic
sediment grain sizes. In engineering applications, errors in these physical properties affect
the accuracy of the sediment fluxes. The present analysis quantifies error propagation from
the input physical properties to the sediment fluxes, determines which ones control the final
errors, and provides insight into the relative strengths, weaknesses and limitations of four …