In Tokyo, efforts are underway to introduce green infrastructure that utilizes the functions of the natural environment to suppress rainwater runoff. The development of rain gardens and similar facilities not only promotes watershed management by controlling rainwater runoff, but also contributes to creating a richer daily life by mitigating heat, improving the landscape, and preserving biodiversity.
Based on our past efforts and knowledge, we have created the “Rainwater Green Infrastructure CONCEPT BOOK Ver.2” to clearly communicate the role, functions, and examples of green infrastructure that contribute to controlling rainwater runoff to municipalities, Tokyo residents, and businesses.
The Tokyo Metropolitan Government will utilize this concept book and, in collaboration with not only the administration but also citizens and businesses, promote initiatives to allow rainwater to seep in and be stored, aiming to realize a flood-resistant and sustainable city.

Publication materials

Amamizu Green Infrastructure CONCEPT BOOK Ver.2

This project is an initiative to promote the “Tokyo 2050 Strategy.”
Strategy 19: Greenery and Water: “Towards a city of tranquility and relaxation woven from abundant greenery and water.”
Strategy 21: Strengthening urban resilience: “Towards becoming the world’s most resilient city, protecting Tokyo residents from the threat of disasters.”

Contact: Urban Development Bureau, Urban Infrastructure Department, Coordination Division Phone: 03-5388-3386