Abstract
This paper shows the implementation framework, determining factors and the land improvement districts' management relevant to maintenance activities of main irrigation canals through Groundwork methods. As a case study, we investigate the land improvement district which is performing the maintenance activities by involvement of multiple actors in two main irrigation canals. Our research revealed that the land improvement district, as an intermediary, utilized the Ground work methods. Characteristics of region, facilities and actors were taken into consideration to carry out the maintenance activities. These results suggest that such performance is effective with promoting the partnership among multiple actors.