OPTIMAL OPERATION OF COUNJUNCTIVE SURFACE WATER AND GROUNDWATER IN TEHRAN METROPOLIS

Recently, conjunctive use of surface water and ground water has been one of the efficient ways in optimal management of water resources. Using conjunctive optimal use and management of conjunctive, we can compensate the nonuniform spatial and temporal distribution of precipitation. Without recent advances in computer hardware and software technology such as geographic information system (GIS) and data base management system technology (DBMS), it is not possible to develop a computer base conjunctive management of groundwater and surface water model. Developed Network flow models for analyzing optimal management of conjunctive use of surface water and groundwater have been used. The real physical system is represented in this system as a network system including nodes and links. Nodes are used for representing storage and non-storage points and links represent the natural channels or canals as connecting elements. Dynamically designing of this model allows the user to interactively develop the given water resource system. A mixed integer linear programming is used for optimum conjunctive operation of groundwater and surface water systems. In this study, conjunctive surface and ground water resources model has been applied in Tehran metropolitan. Tehran field water resources, which meet the potable, agricultural, industrial, environmental and urban water demands, include five reservoirs and several aquifers. Results obtained show the ability of the tools and the methods in integrated management of large scale water resources systems.