Combined simulation-optimization models have been widely used to address the management of water resources issues. This … paper presents a simulation-optimization model for conjunctive use of surface water and groundwater at a basin-wide scale … basin and irrigation system level. The conjunctive use model that coupled numerical simulation with nonlinear optimization …

regulation. This paper focuses on the simulation-optimization for conjunctive use of surface water and groundwater on a basin … surface water and groundwater interaction while a genetic algorithm is developed as the optimization model. The main goal of … the simulation-optimization model is to minimize shortages in meeting irrigation demands for three irrigation systems …