A multiobjective fuzzy stochastic program for water resources optimization: the case of lake management

In many real decision situations more than one objective has to be considered and different kinds of uncertainty must be handled. The uncertainty is generally of two natures: stochastic uncertainty related to environmental data and fuzzy uncertainty related to expert judgement. This paper proposes a fuzzy chance constrained approach to solve mathematical programs integrating fuzzy and stochastic parameters with multiple objective aspects. Our approach is applied to determine reservoirs releases in the Echkeul basin in Tunisia.