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Tokyo Metropolitan - Flood Control
Integrated Information System
(Bureau of Construction River Division)

From 2019/03/22, Tokyo Metropolitan Government - Flood Control Integrated Information System starts providing access via smart phone devices.

Flood forecast
No announcement

Sediment-related disaster alert information
No announcement

Water level well-known river
No announcement


Rainfall information

Water level information

Before using

Contact us

 The condition of rainfall and river water level in Tokyo is automatically updated every 10 minutes.

Tokyo Metropolitan Gov., Bureau of Construction
River Office, Disaster Prevention Division