The purpose of 2007/60 UE Directive is namely the establishment of a framework for measures to reduce the risks of flood damage in Europe. In Italy, the Po Basin District Authority, with the contribution of the regional Authorities, published the hazard and risk maps, which are now in force and available for public participation. A common methodology to evaluate risks is now necessary, in order to set priorities for flood management and the financing of countermeasures (ReNDiS procedure). An analysis for the quantification of risk of flooding is presented in the chapter by means of the proportional index of risk (IRP). In particular, it is focused on the flood’s lamination strategy, at the entrance of Turin, in terms of hazard and the risk reduction. The sensitivity analysis of the main variables that affect the results is presented and discussed. The benefits of the designed countermeasures are evaluated and quantified in terms of percentage risk reduction. The methodology proves to be a suitable means for decision-makers to compare flooding risks in the flood-prone areas, which are mapped by the 2007/60 UE Directive.
Part of the book: River Basin Management