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Today, in most countries, both developed and developing, the position of research in various economic sectors, including agriculture and natural resources, is of great importance.to this end, relatively good financial resources in the field of agricultural research and natural resources have been spent over the past years based on pre-determined goals. Nevertheless, the effectiveness of research activities in Iran has always been accompanied by much debate by its proponents and opponents.With this approach, this study aims to evaluate the effectiveness of watershed management research, to evaluate and measure the effectiveness of applied research projects including flood spreading, rainwater catchment system, underground dam and Soil and Water ConservationProjectin Khorasan Razavi, North Khorasan, Kermanshah provinces. , Fars, Tehran, Qazvin, Zanjan and Semnan. to investigate this issue, research index projects based on solving the problems of watersheds in the above-mentioned provinces, their identification and effectiveness in achieving watershed management goals from an economic and social point of view were examined.In the present study, using cost-benefit method (B / C) and the level of satisfaction of watershed criteria before and after the implementation of measures, the effectiveness of research was evaluated. The results showed that in all selected provinces, the selected research projects have been implemented economically and socially, and economically, the benefit-cost ratio varies from a minimum of 1.08 to a maximum of 128.7 and from The social opinion is that the implementation of all projects is completely satisfied.Key words:Watershed, effectiveness, benefit-cost
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