The Mitsui & Co. Environment Fund

Introduction to Grant Projects

Tsurumi River Basin Networking (TR Net)

Implementing a model for the restoration and regular management of riverside nature spots along the Tsurumi and Tsunashima Rivers

Activity grant

Project Description

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.

Preservation of biodiversity and ecosystem
Grant year
FY2008 Activity Grants
Grant term
3 years
April 2009 - March 2012
Grant amount
6,275,000 yen
Activity region
The Hayabuchi River and mid-downstream Tsurumi River Basins, Yokohama, Japan
Conserving native reeds and Amur silver-grass at the confluence of the Tsurumi and Hayabuchi Rivers

Overview of the Organization

Yuji Kishi, Director
Yuji Kishi, Director
Establishment purpose
TR Net was established as a venue for partnership and exchange between community groups in order to promote various activities that will create a sustainable future and new culture for the Tsurumi River area, including reconsidering the nature and settlements of the Tsurumi River system regardless of manmade administrative divisions, and promoting citizen partnerships on a regional scale to create peaceful, safe river environments and communities that prioritize the environment and public welfare.
Main area of activity
The Tsurumi River area (Machida, Yokohama, Kawasaki)
5 full-time staff members, 8 part-time staff members, 23 full members
Annual operating budget
28.33 million yen in 2006, 26.80 million yen in 2007, 35.33 million yen in 2008
WEB site
Recent activity
  • (1) Tsurumi River Area Clean-up Strategy (2009, 16th version)
  • (2) Promoting tourism to the region with the Tsurumi River Spring Walk, etc.
  • (3) Biological surveys of fish and birds on a river system-wide scale, activities to conserve and restore biodiversity
  • (4) Supporting river environment education at elementary schools (about 4,150 participants in 2009)