Mohammad Karamouz - Professor, School of Civil Engineering, University of Theran
Ali Moridi - ph.D Candidate, School of civil and Environmental Engineering Amrikabir University (Tehran Polytechnic), Tehran , Iran
Hossein Mohammadi Fayyazi - Gradurate Research Assistant , School of civil and Environmental Enginnering, Amrikabir University (Tehran polytechnic), Tehran, Iran
Reza Kerachian - Assistant professor, School of Civil Enginnering, University of Tehran

Available water resources are often not sufficient or too polluted to satisfy the needs of all water users. Therefore conflict on water , as a result of limitations on quantity and quality of water is a major challenge in water allocation. In this study, a methodology for conflict resolution in water allocation in river- reservoir system is presented . The proposed model includes an integrated GA-based optimization and a simulation model. The objective function of the optimization model is based on the Nash bargaining theory. Nash theory can incorporate the utility functions of the decision makers and the stakeholders as well ad their relative authorities on the water allocation process. A water quality simulation model is under development in other to simulate the reservoir discharge quality and also the water quality downstream of the reservoir will be simulated. The models are been applied to the Karkheh River-Reservoir system in southern part of Iran. The utility functions will be based on the reliability of the allocated water to different sectors specially the environmental water demands, and other quality and quantity requirements. The preliminary results show that this model can be effectively used in optimal water allocation of river-reservoir system with conflicting objectives.

Water allocation , Conflict resolution , Water quality , Nash theory , Genetic algorithm , River and Reservoir simulation