Mohammad Azmi - PhD Candidate of Water Resources Engineering University of Tehran, IRAN
Parvaneh Kazemi - PhD Candidate of Water Resources EngineeringUniversity of Tehran, IRAN
Fahimeh Sarmadi - Ms Student of Irrigation and Drainage Engineering International University of Qhazvin, IRAN

In current condition of world, due to population growing and increasing the food requirement and other facilities, development in many aspects are inevitable. Water asa food is used not only for food production but also as a driving force in other parts such as industry, agriculture, society and politic that improves development level. Inthis research, water is considered as a one of the parameters that affect on development in macro scale and causal mapping between water (as a developmentparameter) and municipal, industrial and agricultural development is modeled with system dynamics approach. For evaluating the several statuses, some scenarios areregarded. In these scenarios with respect to time horizon, available water, allenvironmental, drinking and municipal, industrial and agricultural demands are estimated. All the variables are simulated in VENSIM-DSS. Results show that usingsystem dynamics approach in VENSIM-DSS software and developed model it should be able to make a decision support system in macro scale for decision makers

sustainable development, system dynamics, VENSIM-DSS, Urmia