The Guidelines for Submission, Appraisal and Clearance of Irrigation and Multipurpose Project, 1989 had been prepared by the Project Appraisal Organisation (PAO), Central Water commission (CWC) on the basis of the recommendations of the National Conference of Irrigation and Water Resources Ministers held in July, 1986. The present modified Guidelines 2010 are applicable to major and medium projects on inter-State rivers or their tributaries.