PIM (Participatory Irrigation Management) has become one of the cornerstones of irrigation development. Its implementation always involves multilayered interaction between international ideologies, development project institutions that introduce it in national governance agendas, and local context shaped by social, economic, institutional, and political factors. This technical report draws from a three-year research program investigating the building of PIM in two newly established irrigation systems that form part of the Phước-Hòa multi-purpose project. The PIM in the project was implemented through the On-farm and Social Development Program (OSDP).