Flood is one of the most destructive natural hazards associated with substantial damage in various world regions. In this study, Iran’s Kalan basin was divided into ten sub-watersheds. Then, 13 food-related morphometric criteria, i.e., drainage density (Dd), bifurcation ratio (Rb), frequency of streams (Fs), slope (S), time of concentration (Tc), form factor (Rf), shape factor (Bs), Gravelius factor (Rc), elongation ratio (Re), roughness factor (RR), mean elevation (H), and drainage density of mainstream (D), were derived for each sub-watershed. Afterward, the picture fuzzy-analytic hierarchy process (PF-AHP) and picture fuzzy-linear assignment model (PF-LAM) were combined to assign weights to selected morphometric criteria and rank the sub-watersheds based on the level of food susceptibility. The results showed that Ag and Aj sub-watersheds were the most susceptible sub-watersheds to fooding. In contrast, Ac and Ai sub-watersheds had the lowest susceptibility to fooding. Prioritization and ranking of sub-watersheds from the perspective of food susceptibility can be a powerful tool in terms of food prevention and in providing the most efective mitigation measures
