Sediment-transport curves

The process of developing a sediment transport curve is discussed with respect to the choice of dependent and independent variables, procedures for developing a transport curve, and the effects that seasons, major sediment transporting events, and timing of peaks can have on the shape of sediment transport curves. Examples of the visual fit, linear regression, and group average methods are given. Problems associated with computer generated transport curves and potential errors are also discussed. If computer programs are used to fit the sediment-transport curves to the data points, these curves should be check for their reasonableness and consistency over the full range of water discharges for which they will be used. The best curve to use is the simplest one that still defines the relation between sediment and water discharge. (Lantz-PTT)