This work was developed with the aim to study the capability of the DSS WSM to define the strategies for water resource management in the Agri Sinni hydraulic system. The WSM-DSS model allowed to formulate and evaluate short and mid-term water policies through economic instruments and address issues related to water shortage. Under possible hydrological and social scenarios, the model enabled to analyze different water management options. Finally, through the selection of indicators, the options may be compared and evaluated according to goals defined for each region.