Tokyo Metropolitan - Flood Control Integrated Information System (Bureau of Construction River Division)Provide
As of 2021/07/29 12:33
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This website provides rainfall amount and river water level information observed in Tokyo, as well as the warnings, alarms and special alarms in real time.
Information
This website provides rainfall amount and river water level information observed in Tokyo, as well as the warnings, alarms and special alarms in real time.
Flood forecast

There is currently no announcement.
Level well-known

There is currently no announcement.
Sediment disaster information

There is currently no announcement.
Data classification Rainfall Water level Floodgate tide level (mountain side) / (ocean side) River image
Overlay information
Rainfall observatory symbol
(10 mins)
Rainfall icon (red) More than 20 mm
Rainfall icon (purple) 10 - 19 mm
Rainfall icon (orange) 5 - 9 mm
Rainfall icon (blue) 1 - 4 mm
Rainfall icon (white) 0 mm
Rainfall icon (black) Stopped/missed
Water level observatory symbol
Normal river Flood forecast river
Water level icon (red) Danger Water level icon (red) Flood inundation water level
Water level icon (purple) Alert Water level icon (purple) Flood danger water level
Water level icon (orange) Caution Water level icon (orange) Flood warning water level
Water level icon (green) Stand-by water level for Flood Defense
Water level icon (blue) Normal Water level icon (blue) Normal
Water level icon (gray) Stopped/missed Water level icon (gray) Stopped/missed
Floodgate tide level (mountain side) / (ocean side) observation symbols
Floodgate tide level (mountain side) / (ocean side) icon (red) Warning water level exceeded
Floodgate tide level (mountain side) / (ocean side) icon (orange) Warning water level not met
Floodgate tide level (mountain side) / (ocean side) icon (blue) Normal
Floodgate tide level (mountain side) / (ocean side) icon (gray) Invalid
River image symbol
Camera icon River camera installation location

※ “Flood forecast river, etc.” includes the flood forecast river, water level well-known river and flood control alarm river.

   Flood inundation water level is applied to the reference points of flood forecast river and water level well-known river.

   Flood danger water level is applied to the reference points of flood forecast river and water level well-known river.

   Flood warning water level is applied to the reference points of flood control alarm river.

   Stand-by water level for Flood Defense is applied to the reference points of flood control alarm river.

※ Acknowledge all the important points in the 『Information supply』 section before using the information.

Weather information
Area Announcement contents
Heavy Rain Flood Storm Surge Thunder Storm Storm Gale Heavy Snow High Wave Others
23 Western wards None None None Warning None Warning None Warning None
Chiyoda None None None Warning None Warning None None None
Chuo None None None Warning None Warning None Warning None
Minato None None None Warning None Warning None Warning None
Shinagawa None None None Warning None Warning None Warning None
Ota None None None Warning None Warning None Warning None
Meguro None None None Warning None Warning None None None
Setagaya None None None Warning None Warning None None None
Shibuya None None None Warning None Warning None None None
Shinjuku None None None Warning None Warning None None None
Nakano None None None Warning None Warning None None None
Suginami None None None Warning None Warning None None None
Toshima None None None Warning None Warning None None None
Itabashi None None None Warning None Warning None None None
Nerima None None None Warning None Warning None None None
Bunkyo None None None Warning None Warning None None None
Kita None None None Warning None Warning None None None
23 Eastern wards None None None Warning None Warning None Warning None
Taito None None None Warning None Warning None None None
Arakawa None None None Warning None Warning None None None
Adachi None None None Warning None Warning None None None
Sumida None None None Warning None Warning None None None
Koto None None None Warning None Warning None Warning None
Katsushika None None None Warning None Warning None None None
Edogawa None None None Warning None Warning None Warning None
Tamahokubu None None None Warning None None None None None
Musashino None None None Warning None None None None None
Mitaka None None None Warning None None None None None
Fuchu None None None Warning None None None None None
Chofu None None None Warning None None None None None
Koganei None None None Warning None None None None None
Komae None None None Warning None None None None None
Nishi-tokyo None None None Warning None None None None None
Tachikawa None None None Warning None None None None None
Akishima None None None Warning None None None None None
Kodaira None None None Warning None None None None None
Higashimurayama None None None Warning None None None None None
Kunitachi None None None Warning None None None None None
Kokubunji None None None Warning None None None None None
Musashimurayama None None None Warning None None None None None
Higashi-yamato None None None Warning None None None None None
Kiyose None None None Warning None None None None None
Higashikurume None None None Warning None None None None None
Tamaseibu None None None Warning None None None None None
Fussa None None None Warning None None None None None
Hamura None None None Warning None None None None None
Mizuho None None None Warning None None None None None
Ome None None None Warning None None None None None
Akiruno None None None Warning None None None None None
Hinode None None None Warning None None None None None
Hinohara None None None Warning None None None None None
Okutama None None None Warning None None None None None
Tamananbu None None None Warning None None None None None
Machida None None None Warning None None None None None
Tama None None None Warning None None None None None
Inagi None None None Warning None None None None None
Hachioji None None None Warning None None None None None
Hino None None None Warning None None None None None
Oshima island None None None Warning None None None None None
Oshima None None None Warning None None None None None
Niijima island None None None Warning None None None None None
Toshima None None None Warning None None None None None
Niijima None None None Warning None None None None None
Kozushima None None None Warning None None None None None
Hachijo island None None None Warning None None None None None
Hachijo None None None Warning None None None None None
Aogashima None None None Warning None None None None None
Miyake island None None None Warning None None None None None
Miyake None None None Warning None None None None None
Mikurajima None None None Warning None None None None None
Ogasawara Islands Alarm None None Warning None None None None None
Ogasawara Alarm None None Warning None None None None None
Notification
This website provides rainfall amount and river water level information observed in Tokyo, as well as the warnings, alarms and special alarms in real time.
The condition of rainfall and river water level in Tokyo is displayed every 5 minutes. Please refresh the page to get the latest information.
Tokyo Metropolitan Bureau of Construction - River Division - Diaster prevention department S0000386@section.metro.tokyo.jp
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