Incertitude dans les dbits de crues: Approche baysienne

Abstract A stochastic model for the prediction of the largest exceedance above a given discharge base level, at a given location of a river, has been presented by Todorovic and Zelenhasic. In the present paper a bayesian approach is followed in order to find the distribution function of the exceedance for a given return period when uncertainty arises in the parameters of the distribution function describing the model. The risks encountered in evaluating this exceedance using different lengths of period of record are compared.