Abstract
This study aims to clarify the development process of the interaction between a civic group and government bodies for river management. We focused on the management of Tama River, Tokyo, which is now under taken by collaboration of civic groups and government bodies. We analyzed the interaction by classifying their activities into four categories, namely, government explanation, government request, civic groups scrutiny, and civic groups proposition. In this study, the interaction is developed when more positive activities, request and proposition are taken. Our study provides three results. Firstly, the interaction of the Civic Group and Government Bodies in Tama River management had developed, as the category of actions taken became more positive, and the content of each actions became more specific and technical. Secondly, factors for the development of the interaction from the Government side were, having rules about communication with civic groups, and enhancement of accountability to civic groups based on the rules. And thirdly, factors for the development of the interaction from the Civic Group side were, scrutiny and proposition by a well experienced and acquainted liaison person, succession of such liaison, and cooperation with other civic groups.
