Uncertainty Analysis of Stage-Discharge Rating Curves In Rivers

The primary purpose of this paper is to analyze the uncertainty by assessing gauging deviations of the stage-discharge rating curve in rivers. In this research, the basis of the estimation of the rating curve is the concept of isovel contours in the Single Point Measurement method (SPM). Observed data in the Nazli-chai River in Iran, Main River in England and Colorado River in Argentina are used to investigate the global uncertainty in the rating curve estimation. The results can be used to improve flood control and water resource management.