Designation of decision support systems for crisis management (Case study: Tehran water crisis management with use " Vensim" software)

At the future, certainly one of important problem in geopolitics aboutTerritorial planning Of country is water geography. Water waste has two parts: an actual part and a false part.The actual part includes waste of water from joints, transmission lines, and supply lines.The false part includes calculating process and unfair usage.
For optimum management of water resources, and to decrease water waste, using of decision support systems &softwarecan considerable help in studying and recognition of supply & demand of drinking water about decrease appearance losses for control and management of water crisis.
Problem in this research, knowledge about decision support systems & designation of crisis management that etude “Vensim” software for Tehran water crisis that resulted of analysis chart, define without accommodating plan, after 2020, accidence calamitous & critical water crisis.
Finally, it should be mentioned that to have a proper management of drinking water in Tehran city, the monitoring of water waste and its control, also having a consumption criteria accepted and followed by the people are really necessary.