Experience the charm of Tokyo’s rivers

July is River Conservation Month (*). Tokyo will hold various river conservation events to help people become more familiar with and love Tokyo’s rivers. Please come along and participate. (Participation is free.)

(*) Reference: About River Conservation Month
In order to promote the conservation and restoration of good river environments and to foster awareness of river conservation, July has been designated River Protection Month every year, and various events are being held by the Ministry of Land, Infrastructure, Transport and Tourism, Tokyo Metropolitan Government, and other local governments.

In 2025, we will be holding facility tours at three locations. Staff will provide on-site explanations about the role and structure of each facility.

1）Experience the huge tunnel under the Circular Route 7 (Kanda River and Circular Route 7 Underground Regulating Pond) Horinouchi, Suginami Ward

Date and time

Four sessions will be held on Saturday, July 5 between 9:30 – 12:50.

Number of people recruiting

Total 200 people

We will visit a flood control reservoir that is 12.5 meters in diameter and 4.5 kilometers long, located about 45 meters underground under the Route 7 Circular Route.

(*) In principle, you will have to use stairs to go up and down to the underground tunnel (222 steps, equivalent to 14 floors of a building).

2）Visit to the underground reservoir that protects the city from heavy rain (Ebara Reservoir)
Nishigotanda, Shinagawa Ward

Nishigotanda, Shinagawa Ward

Friday, July 25, Two sessions between 10:00 – 15:30

Number of people recruiting

Total 40 people

We will visit a flood control reservoir located on the former site of Ebara Market, which is approximately 59 to 75 meters wide, 30.5 meters deep, and 126 meters long.

(*) There are stairs to go up and down within the tour course (equivalent to three floors of a building).

3）Tour of the Water Gate Management Center, which protects low-lying areas, Kiyosumi, Koto Ward

Date and time

Thursday, July 31, 9:30 – 12:00

Number of people recruiting

30 people

The tour will visit the Water Gate Control Center Monitoring Room, which remotely monitors and controls 20 facilities, including water gates and drainage pumping stations, and the Kiyosumi Drainage Pumping Station, which drains water in emergencies.

How to apply

Please apply by postcard or via the website.
For details of each event and how to apply via the website, please click here.

Items to be stated

• Name of the desired event (one event from 1) to 3) per postcard)
• Names (in hiragana) and ages of all participants (up to 5 per application)
• Representative’s address, telephone number, and email address (if available)

(*) Applications that do not include the required information may be rejected.

Application deadline

Friday, June 6, 2025 (postmark and receipt on that day are valid)

Address

Address: 2-8-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo 163-8001
Tokyo Metropolitan Government Bureau of Construction, River Department, Planning Division, Environmental Planning Section

Regarding the handling of personal information, etc.

Any personal information provided when applying will not be used for any purpose other than to inform you about the event, and we will take every precaution to protect it.

Precautions

• Please meet at the venue. Please use public transportation to get to the tour venue.
• There will be stairs to climb, so please wear comfortable clothing and non-slip shoes.
• Only one application per person for the same event is allowed.
• We expect that the number of applications will exceed the number of available spots, so we will hold a lottery. Please refrain from canceling on the day.
• Please note that the event may be canceled or the content may change due to weather conditions.
• We will notify you of the results regardless of whether you win or lose. If you do not receive a notification 10 days before the event date, we apologize for the inconvenience.
  Please contact the Planning Division, River Department, Construction Bureau (Tel: 03-5320-5425).

Past events

Contact: Bureau of Construction, River Department, Planning Division Phone: 03-5320-5425 Email: S0000384（at）section.metro.tokyo.jp *The email address has been changed to prevent spam. Please replace (at) with @ when using this email address.