ranking of scenarios for water allocation of zayandeh rud dam to different users using the expert multi attribute decision making models

population growth as well as development of industry and agriculture has increased the demand and competition over water resources in large watersheds especially in zayandeh rud basin and severely affected on agriculture and environment sectors. hence, providing a best scenario for the allocation of water in this basin is essential. in this study, due to alternating periods of wet, drought and normal conditions, five water allocation scenarios for each of these conditions were defined. also the five criteria include measures of social, economic and environmental were selected for quantitative evaluation of scenarios. for ranking the water allocation scenarios, four multi-attribute decision making (mcdm) techniques of electre-iii, ahp, topsis and cp have been applied. then, the borda method as a group decision making method has been used for final ranking of scenarios.