Assessment risk Mashhad water supply options and their set priorities

Infrastructure supply is one of the most important concerns of managers and programmers in countries in many parts of the world, especially in the field of water supply that is determined as a main limiting factor for development due to severe shortages in various parts of Resources, Energy and funding. Today, water supply for various parts is the most basic challenges ahead in Iran. Accordingly, water transport from other regions and implementation of the projects is one of the solutions along with the nonstructural activities. These projects consume a huge part of the national budgets. Now, Mashhad plain has faced to serious challenges in surface and ground water resources besides population growing and water contamination. In this research, challenges and opportunities of Mashhad water supply projects are investigated and a consistent method for assessing the risk is presented. Therefore, it is perused risk factors in Mashhad water supply projects in the first part of this article, based on brainstorming, and the average of risk is calculated for each option. Results show, although Hezar Masjed project has the lowest risk, waste water transfer to the east of the plain for replacing with agricultural water has the lowst possibility domain of risk. In fact, Results say using a range of risk areas to prioritize options (managerial decisions) can be more helpful. The paper also re-prioritizes various options of water supply based on the parameters of the project cost, the volume of water for each project; risk factor and water are recycled index.