This website provides observed information of the rain gauges and the water level gauges of the rivers in Tokyo in real time.
Please update yourself with the rainfall or river water rising condition to carry out flood prevention measures.
・Information may not or may be wrongly displayed displayed during maintenance or inspection of observation equipment, equipment failure, etc.
・Depending on the circumstances, the administrator may change, suspend or cancel the information supply without notice.
・Information providers are not responsible for any damage or loss caused by the activities carried out using the information.
・When warnings/alarms are announced, you must promptly carry out flood control activities. Please do not inquire by phone