Tokyo Metropolitan - Flood Control Integrated Information System (Bureau of Construction River Division)Provide
As of 2023/02/03 16:33
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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 None None None None None Warning
Chiyoda None None None None None None None None Dry
Chuo None None None None None None None None Dry
Minato None None None None None None None None Dry
Shinagawa None None None None None None None None Dry
Ota None None None None None None None None Dry
Meguro None None None None None None None None Dry
Setagaya None None None None None None None None Dry
Shibuya None None None None None None None None Dry
Shinjuku None None None None None None None None Dry
Nakano None None None None None None None None Dry
Suginami None None None None None None None None Dry
Toshima None None None None None None None None Dry
Itabashi None None None None None None None None Dry
Nerima None None None None None None None None Dry
Bunkyo None None None None None None None None Dry
Kita None None None None None None None None Dry
23 Eastern wards None None None None None None None None Warning
Taito None None None None None None None None Dry
Arakawa None None None None None None None None Dry
Adachi None None None None None None None None Dry
Sumida None None None None None None None None Dry
Koto None None None None None None None None Dry
Katsushika None None None None None None None None Dry
Edogawa None None None None None None None None Dry
Tamahokubu None None None None None None None None Warning
Musashino None None None None None None None None Dry
Mitaka None None None None None None None None Dry
Fuchu None None None None None None None None Dry
Chofu None None None None None None None None Dry
Koganei None None None None None None None None Dry
Komae None None None None None None None None Dry
Nishi-tokyo None None None None None None None None Dry
Tachikawa None None None None None None None None Dry
Akishima None None None None None None None None Dry
Kodaira None None None None None None None None Dry
Higashimurayama None None None None None None None None Dry
Kunitachi None None None None None None None None Dry
Kokubunji None None None None None None None None Dry
Musashimurayama None None None None None None None None Dry
Higashi-yamato None None None None None None None None Dry
Kiyose None None None None None None None None Dry
Higashikurume None None None None None None None None Dry
Tamaseibu None None None None None None None None Warning
Fussa None None None None None None None None Dry
Hamura None None None None None None None None Dry
Mizuho None None None None None None None None Dry
Ome None None None None None None None None Dry
Akiruno None None None None None None None None Dry
Hinode None None None None None None None None Dry
Hinohara None None None None None None None None Dry
Okutama None None None None None None None None Dry
Tamananbu None None None None None None None None Warning
Machida None None None None None None None None Dry
Tama None None None None None None None None Dry
Inagi None None None None None None None None Dry
Hachioji None None None None None None None None Dry
Hino None None None None None None None None Dry
Oshima island None None None None None None None None None
Oshima None None None None None None None None None
Niijima island None None None None None None None Warning None
Toshima None None None None None None None Warning None
Niijima None None None None None None None Warning None
Kozushima None None None None None None None Warning None
Hachijo island None None None Warning None None None Warning None
Hachijo None None None Warning None None None Warning None
Aogashima None None None Warning None None None Warning None
Miyake island None None None Warning None None None Warning None
Miyake None None None Warning None None None Warning None
Mikurajima None None None Warning None None None Warning None
Ogasawara Islands None None None None None None None None None
Ogasawara None None None None 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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