2020 Volume 75 Issue 6 Pages I_249-I_257
In recent years, river improvement based on the natural environment and the local culture is required, as well as the flood control and water utilization function. Especially it is said that “kawa-machidukuri”, the community development from the river, which various stakeholders collaborate to create rivers and community development together for creating sustainable society and environment. The aim of this research is to clarify the process and structure of participation and collaboration for consensus building which necessary for creation of public space and activities in water-front. So, it is analyzed that transformation of the river basin and community development activities in the Kikuchi River basin of Kumamoto prefecture, by using literature, historical materials and newspaper database. And collaboration process in the Kawamachidukuri project in Kikuchi city is observed as a case study As a result, it is clarified that the “Ba” is important to think together river improvement and community development along the river, and it is necessary for various stakeholders communication in flat relation, seamless public space design and sustainable collaboration system.