VIKOR methods in management and site selection of stone-mortar ‎Dams, case study: Watershed Yakhlaqan Makoo‎

Site selection is the most significant and fundamental process in dam construction. Site selection of dam is one of the most important and effective steps of project implementation. Optimal site selection impacts on reducing the costs of dams establishing. Today, this matter is considered by managers and decision makers. So, different methods apply to site selection. Different parameters are important in text of site selection such as the sub-basins characteristics and hydraulic characteristics. This research determined the optimal location of stone–mortar dams implementation based on nine effective criteria in ten sub-watersheds in Yakhlaqan Makoo region. In this research, criteria weighting was done by AHP method. Then in order to implement stone-mortar dams, Priority of sub-watershed is identified by TOPSIS and VIKOR methods. According to the results, efficient criteria of stone-mortar dams site selection were the catchment area and channel length with 0.191, 0.204 weights. While, the road distance and villages distance were the inefficient criteria with 0.033 weights. The results of both methods identified sub-basins D1, D and H as suitable sub-basins to site selection. The purpose of this research was introduction of the decision support system techniques in identifying and ranking suitable sub-basins in the feild of stone-mortar dam's site selection.