This paper recognises that the irrigation sector provides a rich source of experience and lessons in user participation. It argues that participation by farmers in system design and management helps to ensure sustainability of the system, reduces the public expenditure burden, and improves efficiency, equity and standards of service. The report further presents that mobilising support at all levels and establishing the participatory process, however, involves costs; this also demands knowledge of the incentives facing each group of stakeholders, and of the essential elements in building effective usersÆ organisations. The paper costs, benefits and limitations involved in participation in this irrigation projects, it looks at the role and the incentives required in engaging the various participants, who are World Bank Task Managers, Policy Makers, Agency Staff, Farmers and others. Lessons learnt in organising Farmer Participation in different contexts is discussed and finally the process of building participation into the projects cycle through identification, preparation, appraisal supervision and evaluation is discussed.