2.1. SVA model
Dams and their facilities are assigned as critical infrastructures and key assets. Thus, the Risk assessment model should consider the attractiveness of facilities and probability of occurring a threat while the vulnerability due to each type of threat should be considered simultaneously. The Security Vulnerability Assessment (SVA) method is considered as a basic model for risk assessment in this study. Ranking in the SVA method includes a 5-level Likert scale that is classified with a query according to the experts’ suggestions. Level one of the assets shows the minimum value and level five shows the maximum (van Staalduinen et al., 2016). Figure 4 shows the 5-level solution SVA methodology.