On the lack of information in hydraulic engineering models

This paper is concerned with the problems connected with the lack of information in hydraulic engineering models. The paper focusses on hydraulic engineering models that result in a probability of failure. The different types of uncertainty in such models will be discussed. Future research might give information and reduce some of the uncertainties. It will be discussed how to present the current and the uncertain future probability of failure. A simplified model which calculates the probability of failure of a dike will be used as an example.