These Guidelines for analysis and assessment of irrigation projects been prepared within the framework of Component 2: Cooperative Regional Assessment, of the Eastern Nile Irrigation and Drainage Study. They aim to assist practitioners to plan irrigation investment projects that will realise and sustain their full potential. The guidelines cover the analysis of irrigation projects with a view of selecting the preferred projects and feasibility study (or assessment) of the selected projects. They were developed from the overall experience of the consultant, lessons learnt from the Engineering Component (Analysis Phase) of the EN-IDS and a review of a number reports on costs and benefits of irrigation projects in Sub-Saharan Africa, the Middle East and North Africa and Asia. The intended users are ENTRO staff and the National Irrigation Planning and Coordination Teams of the Eastern Nile countries, but may also be useful to consultants and for training of irrigation staff.