Communal irrigation systems (CIS) are a category of irrigation systems that are typically small scale and constructed with the participation of farmer-beneficiaries through their irrigators association. This Policy Note examines the common technical problems associated with the construction and operation and management of CIS based on a study of 66 CIS in 11 provinces in Luzon. The specific technical concerns examined include the sources of water, sedimentation, and design considerations from headworks to the distribution systems of CIS.
