The Tsurumi River is a typical urban river system, but its environment is being disrupted by invasive plant species such as Canadian goldenrod and burr cucumber, and its traditional greenery, such as Amur silver-grass and reeds, is under threat. However, the reality is that the long-term planning and implementation of restoration initiatives and a review of management processes are not urgent issues for the governments responsible for the river. This project aims to establish environmental restoration and regular management models with NPOs and residents as precedents to encourage collaboration from government and other sectors, and then implement initiatives based on these models in the downstream area of Tsunashima, including restoring ecosystems, formulating maintenance and management standards, and establishing a long-term management framework. Finally, a manual will be created containing these management methods.