Abstract: Sustainability is the motive of any development project layout, when not attained all the energy used seems like wasted. The outcomes of a project depend really on the commitment of the participants of the project. The overall objective of this research was to identify the relationship between beneficiary participation and project sustainability in the Community-based Watershed Management in Kirehe. This study aimed at searching about the project targeted community participation in the planning, implementation of the KWAMP looking and aiming at finding if this project was or will be sustainable.