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Minato City Internet http://navi.city.minato.tokyo.jp/suii_uryo/ Bureau of Construction Internet http://www.kasen-suibo.metro.tokyo.jp/im/tsim0101g.html Bureau of Sewerage Internet / mobile phone https://tokyo-ame.jwa.or.jp/ E m e r g e n c y Water bar Sandbag ◆◇◆ ◆◇◆ ◆◇◆ ◆◇◆ About the commencement of the disaster warning level system The Furukawa River Underground Regulating Pond (tunnel extension: 3.3 km, inner diameter: Φ7.5 m, storage capacity 135,000 m3) was created by the Tokyo Metropolitan Government to handle rainfall of 50 mm per hour. It has been in use since 2017. The pond greatly helps reduce flood damage in the Furukawa River basin, by temporarily storing flood water when the river water level rises. Underground Regulating Pond Standard Cross-Section We provide real time information Access the URLs above and select "Minato City" from area information to check the rainfall and river water levels in Minato City. You can access the Flood Control Integrated Infor- mation System of the Tokyo Metropolitan Govern- ment's Bureau of Construction from the QR codes below. We provide real time information on rainfall and river water levels via the Internet and mobile phones. 〇 Access the following URLs with your mobile phone or computer to check the information about rainfall and water levels. Twitter Tokyo Suibo For mobile phones For smart devices Warning level Details Advisory Source Level 5 Level 4 Criteria for issuing flood-related evacuation advisories, etc. Furukawa River Underground Regulating Pond Warning level Warning level 3 Warning level 4 Warning level 5 Prepare to evacuate / Elderly persons, etc. are to start evacuating Evacuation advice Disaster occurrence information Issued in any of the following situations: - When the water level indicator set up in Shinhiroo Park by Minato City shows that water level from the revetment is 0.2 m. - When a heavy rain warning or short-term precipitation forecast predicts that it will be necessary to evacuate late at night or early in the morning. - When a typhoon with rain is approaching and will pass by from late at night to daybreak, and a large amount of rainfall is expected. - When Furukawa River flood warning information is announced(jointly by the Tokyo Metropolitan Government and Meteorological Agency). Evacuation order (urgent) - When the Tokyo Metropolitan Government announces flooding of the Furukawa River. - When a disaster has already occurred. Evacuation information Issuance criteria Warning level Warning level 3 Warning level 4 Warning level 5 Prepare to evacuate / Elderly persons, etc.are to start evacuating Evacuation advice Disaster occurrence information Issued in any of the following situations: - When Arakawa River flood warning information is announced(jointly by the Ministry of Land, Infrastructure,Transport and Tourism and Meteorological Agency). - When Arakawa River flood warning information is announced(jointly by the Ministry of Land, Infrastructure,Transport and Tourism and Meteorological Agency) and the water level is expected to reach the Arakawa River flood warning level late at night or early in the morning. - When Arakawa River flood warning information is announced (jointly by the Ministry of Land,Infrastructure, Transport and Tourism and Meteorological Agency). Evacuation order (urgent) - Issued as needed, depending on the flood situation. - When a disaster has already occurred. Evacuation information Issuance criteria ● Criteria for issuing evacuation advisories, etc. related to flooding (Furukawa River) ● Criteria for issuing evacuation advisories, etc. related to flooding (Arakawa River) Evacuate to an evacuation center, etc. if possible. If in your own judgement evacuating to an evacuation center could endanger your life, then evacuate to a nearby safe place, move to a safer room, or take other actions to ensure your safety. Take the most appropriate action to protect your own life. Level 3 Persons who require special consideration and will need time to evacuate (such as elderly people) are to evacuate immediately. Others persons should prepare to evacuate, and evacuate voluntarily. Level 2 Use the Hazard Map to reconfirm matters such as the disaster risk, the location of evacuation centers, the evacuation routes, and when to evacuate. Confirm what you yourself will do to evacuate, so you will be prepared for the event of an evacuation. For example, reconfirm how to get evacuation information and what to be careful about. Level 1 Minato City Minato City Minato City Meteorological Agency Meteorological Agency Be prepared for the event of a disaster by paying careful attention to the latest information on disaster prevention, the weather, etc. Regulating Pond Intake Flooding can occur, even in Minato City. ① Always be prepared Torrential rain Torrential rain Torrential rain Torrential rain Torrential rain Torrential rain Heavy rain Typhoon 22 Typhoon 23 Typhoon 9 Typhoon 9 6 229 67 44 61 57 115 Per day 4 191 65 167 1 46 14 3 0 197 47 0 35 0 741 37 3 Weather Hourly max. Flooding above floor level Flooding below floor level Basement flooding Date (M/D/Y) 3 2 0 60 57 2 4 1 73 64 2 2 1 39 37 0 3 0 107 78 1 0 0 99 52 125 59 5 218 15 43 Maximum total hourly and daily rainfall values are those recorded with measuring equipment in Minato city. Damage conditions are based on information reported to Minato City. Past flood damage in Minato City Floods and landslides caused by heavy rainfall have occurred all over the country in recent years. The chart below shows the flooding reported in Minato City since 1999. The term “torrential rain” refers to heavy rain that falls over a small area in a short time. It is very difficult to forecast because it occurs suddenly. On August 29, 1999, heavy rainfall of max. 115mm per hour was observed in Minato City, with a total rainfall that day of 125mm (The Tokai Downpour recorded an hourly max. of 114mm and total rainfall of 589mm for the day). Continuous heavy rainfall on the scale of the Tokai Downpour is plausible in Minato City, so please pay attention to the local weather forecast. ※ ※ （number of households） (number of households） (number of buildings） Aug. 29, 1999 July 3, 2000 July 4, 2000 Sep. 6-7, 2002 Oct. 9-10, 2004 Oct. 20, 2004 Sep. 4-5, 2005 Sep. 11, 2005 Aug. 10-11, 2009 Sep. 8, 2010 Dec. 3, 2010 Torrential rain 6 2 0 58 44 June 29, 2014 Rainfall (mm) ■ ■ Prepare an emergency bag with basic necessities. ■ Always check the weather forecast on TV, radio, PC, etc. ■ Don't put anything on top on drainage ditches or street drains. ■ ■ Bag should contain a flashlight, a portable radio, batteries, drinking water, emergency provisions, a first aid kit, towels, clothes, underwear, rope, valuables, cash, etc. ※Consider installing drainage pumps for underground and semi-underground facilities such as underground garages. Prepare sandbags and water bars in basements and half-basements. Confirm the location of the designated evacuation center and a safe route to that location. ※Clogged street drains may cause flooding and submergence of roads. Please cooperate by keeping areas around street drains clean. Make a simple water barrier out of plastic trash bags. 1 Make a water bar 2 Use planters and a plastic ground sheet (tarpaulin) 3 Use simple absorbent sandbags 4 Information on Disaster Prevention is Available by E-mail ２． ３． 1． ＜How to Register＞ ＜Information for Delivery＞ Send a blank e-mail to the following: [email protected] If your cell phone supports QR codes, scan the following QR code to access the site. ▼Access the registration form The reply contains the URL for you to access the registration form. ▼Choose the language You can choose either Japanese or English. ▼Choose the type of information Choose the type of information you would like to receive. ▼Register Press the Register button. Registration is now complete. QR code What you can do at home to prevent flooding A simple method of preventing flood i ng is to use something in your home as a water barrier. Of course, this method wi l l only work when the water is sti l l shallow. Continue to pay attention to water levels and do not miss the chance to evacuate at the appropriate time. Take two 40-liter plastic trash bags and insert one inside the other to make a double bag. Fill the double bag half-way with water (so it is not too heavy to carry). Make several of these bags and pile them up with no spaces at the entrance as if they were sand bags. The barrier will be stronger if you pile the bags in cardboard boxes and the water-bag barrier can be piled higher. Use a long board or metal plate as a water barrier. If a board or metal plate is not available, a table, bureau, office locker, tatami mat or other material may be used. Arrange the planters in a row and wrap them in the ground sheet/tarp to prevent water from entering. These substitute sandbags will swell when submerged in water. Commercially available simple absorbent sandbags can be used to prevent water from entering. Minato City delivers information on earthquakes, heavy rains, flooding, and other natural disasters to the residents and businesses within the city via cell phones, smartphones, tablet computers, and PCs. Types Criteria for Information Delivery Water levels The following level of water has been measured with the water gauge set up in the Furukawa River: ○Advisory: The water level of the Furukawa River has reached two meters from the levee. ○Warning: The water level of the Furukawa River has reached one meter from the levee. Note: A notice on the cancellation of advisories and warnings will be delivered when the water level has dropped to the level that no longer requires cautions or alerts. The following amount of rainfall has been measured by at least two out of nine gauges set up within Minato City: ○Advisory: At least 25 mm of rainfall has been measured in an hour. At least 10 mm of rainfall has been measured in 15 minutes. ○Warning: At least 30 mm of rainfall has been measured in an hour. At least 20 mm of rainfall has been measured in 15 minutes. At least 35 mm of rainfall has been measured in 30 minutes. Note: A notice on the cancellation of advisories and warnings will be delivered when the amount of rainfall has dropped to the level that no longer requires cautions or alerts. An earthquake with a seismic intensity of 4 or higher has been recorded in Minato City. Weather warnings, special warnings, or advisories have been issued for Minato City. Tsunami advisories, major tsunami warnings, or similar warnings have been issued for the inner part of Tokyo Bay. Information on civil protection, such as armed attacks or ballistic missile attacks, has been issued for Minato City. Alert information has been released on sediment disasters, information on a record-breaking deluge in a short period, flood forecasting for the Furukawa and Shibuya rivers, tornado forecasts, or information on volcanoes. Any other optional emergency information from Minato City Amount of rainfall You will receive an e-mail from the City's Disaster Information E-mail Service. Earthquakes Advisories and warnings Tsunami Civil protection Disaster prevention/ weather Other emergency information Flood advisory information (Flood watch) Flood alert information (Flood warning) Flood risk information (Flood warning) Lifting of flood cautionary information (Lifting of flood watch) Flood occurrence information (Flood warning) Issued promptly when flooding occurs. Location Location Evacuation level Flood risk level Stand-by level for flood preparedness teams Flood advisory level Evacuation level Flood risk level Iwabuchi floodgate (Upper) Shimo 5-Chome, Kita-ku, Tokyo Types and standards for issuance of Furukawa River flood forecasts. Measuring point Standard point Shibuya-Bashi Shi-no-Hashi Ebisu Higashi, Shibuya City Minami-azabu, Minato City Furukawa River water level rises suddenly. Evacuate before you sense danger. ※Water level once rose 2.5m in 15 minutes. (Advisory) (Advisory) (Warning) (Warning) Hourly precipitation Content of broadcast Content of broadcast (No broadcast) (No broadcast) (No broadcast) Furukawa River water level Shin Hiroo Park Shirokane Park Water level Water level Water level Water level Water level Water level Water level Water level Levee Levee Levee Levee Levee Levee Levee Levee The Furukawa River water level has reached the warning level. Take care to prevent flooding in buildings or basements. Siren sounds for 10 seconds and stops for 5 seconds. There is a danger that the Furukawa River may overflow its banks. Please prepare for evacuation. ② When it starts raining heavily Standard of issuance of advisories or warnings for Minato City by the Meteorological Agency. Basin Water Index: An index for indicating the danger of river flooding from heavy rain upstream. It numerically expresses how much rain has been carried downstream. Pay attention to weather report Strong wind advisory Average wind velocity 13m/s or over (Flooding) When the Surface Water Index reaches 13 (Landslide) When the Soil Water Index reaches 127 When the Furukawa River basin's Basin Water Index reaches 6.1 Or, when the Furukawa River basin's Surface Water Index reaches 12 and its Basin Water Index reaches 5.7 Average wind velocity 25m/s or over (Flooding) When the Surface Water Index reaches 27 (Landslide) When the Soil Water Index reaches 180 When there is a Designated River Flood Forecast for Shibuya River and Furukawa River (Shibuya Bridge and Shinohashi Bridge) Storm warning Heavy rain warning Special heavy rain warning Type Standards of issuance Heavy rain advisory Flood advisory Advisory (Caution that disaster may occur) Warning (Warning that serious disaster may occur) Special warning/Alert (Warning that serious disaster will probably occur) The Meteorological Agency issues an advisory or warning when there is a possibility of disaster. Please pay attention to weather information on TV, radio, or PC. Pay attention to flood forecast/warning/siren; act quickly. 3 00m 10 Type of information Standards of issuance Water level of the Arakawa and Furukawa Rivers is being measured; flood forecast will be issued in accordance with the condition of water level. When a flood forecast is issued, evacuate promptly. Types and standards for issuance of Arakawa River flood forecasts. . 4. m 6. 50m 7. 70m 9. 19m 11. 08m 4. 88m 6. 67m Flood advisory information Type of information Standards of issuance Warning level １ ２ ３ Minato City measures precipitation at nine points within the city and measures Furukawa River water level at two points, Shin Hiroo Park and Shirokane Park, every three minutes. Please listen carefully to warnings broadcast from radio tower speakers in connection with precipitation in Minato City and of Furukawa River water levels. Very heavy rain is falling in the area.There may be flooding in buildings and besements. Please take extreme care. 25mm 50mm 30mm Warning level １ ３ ２ ４ 2.58m 2.86m .0m 2.0m 1.0m 1.0m ※Announcement will be made when warning level 2 (advisory) is reached in accordance with forecasted rainfall and weather conditions. ■ Flood warning 2.5m (15minutes later) Warning based on precipitation in Minato City Warning based on Furukawa River levels ※The Furukawa River water level is rising. Please pay attention to the weather report. 2 Issued when the water level falls under flood advisory level (advisory water level). Issued promptly when the water level at any standard point in the forecasted area reaches an alert level (alert water level). Issued when the water level at any standard point in the forecasted area is expected to reach an alert level (alert water level), or the level to trigger evacuation, and expected to rise further. Issued when the water level at any standard point in the forecasted area reaches an advisory level (advisory water level) and is expected to rise further. ○Soil water index: An index for indicating the danger of landslides from short-term heavy rain. It numerically expresses how much rain has accumulated in the soil. ○Surface Water Index: An index for indicating the danger of flooding from short-term heavy rain. It numerically expresses how much rain has accumulated on the surface of the ground, taking into consideration things like the covering, texture, and slope of the ground. ○ When heavy rainfall with a level of precipitation seen only once every few decades is expected in association with a typhoon or localized torrential rain, or when heavy rainfall is expected in association with a typhoon of an intensity seen only once every few decades or an extratropical cyclone of comparable intensity. Issued when the water level at any one standard point is expected to reach a flood risk level within the hour. 0.2m 0.2m ※ ※ Do not use elevators as they may be dangerous. ※ Move to a higher floor immediately. ※There have been accidents where people fell into uncovered manholes. ※Do not remove manhole covers to try to drain water from streets or roads. What is urban type flooding? ■ ■ ■ ■ ■ ■ ■ ■ Always gather the latest weather information from TV, radio, or PC. Stay away from rivers and/or bridges. Evacuate to a nearby tall building or evacuation center. The incidence of urban type flooding due to localized heavy downpours is increasing; please take care. Be careful of localized heavy downpours. Be careful of manholes. Basements are dangerous during torrential rain. There is a danger that sewage may back up from bathrooms or toilets located in the basement. ■ ■ ■ ③ When you evacuate Pay attention to evacuation orders from City Hall or the police department. Turn off gas at the supply valve and turn off electricity at the circuit breakers. We ask your cooperation in helping to evacuate the elderly, children, and the sick. Please contact City Hall when you evacuate to an evacuation center. Do not evacuate alone; contact friends and neighbors and evacuate together. In urban areas such as Minato City, where most of the land is covered with concrete or asphalt, the ground cannot absorb the rainfall, so most of it runs off into the sewers. In the case of a heavy downpour, the sewer system cannot handle the rainwater, so it overflows from manholes and street drains. The overflowing water flows into the street, pooling at the bottoms of slopes or low places and flooding the streets, basements or ground floors of buildings. This type of flooding is called“urban-type flooding.” ※ Water may flow in suddenly and it may become i m possi ble to open doors due to water pressure. If electric faci l i t i es are located in the basement of the bu i ld i ng, there is a danger that su bmersion of equ i pment may resu lt in a power outage or electrocution. If the bathroom or toilet is below street/road level, it is possible that sewage will back up and overflow into the room. ※ ※Take no chances - if water is as d eep as your waist, remain in a high place and wait for rescue. ■ ※If sand bags are put away wet, they cannot be reused. ④ After flooding has receded ● ■ ■ ■ ■ Disinfect to prevent infectious diseases. Take care after a typhoon has passed. Dry out used sand bags and return or store them. Check for broken electric wires or cables. Check for leakage of hazardous materials such as kerosene. Check the exterior of your home, including roof ti les and antennas. Please contact the following facilities in case of flood or typhoon damage. Content of request Name of facility Location Contact information Certificate of damage General Administration Subsection, General Administration Section, Each Minato City Regional City Office Health and Welfare Subsection, Residents Support Section, Each Minato City Regional City Office Collaboration Project Subsection, Collaboration Project Section, Each Minato City Regional City Office Each Regional City Office (see below) Each Regional City Office (see below) Each Regional City Office (see below) Each Regional City Office (see below) Each Regional City Office (see below) Each Regional City Office (see below) Trash collection Minato Recycling and Waste Management Office 3-9-59 Konan 3450-8025 6400-0043 6230-0282 5549-3800 Azabu Regional City Office (see below) 3455-0551 3403-0591 Contact information for related facilities 3431-0119 3470-0119 3478-0119 3446-0119 3437-0110 3479-0110 3475-0110 3440-0110 3454-0110 3570-0110 3799-6315 3374-9451 3798-5243 3645-9273 Request for disinfection after flooding recedes Minato Public Health Center Life Hygiene Section Life Hygiene Counseling Subsection 1-4-10 Mita Health consultation Relief money after small-scale d isaster Emergency support funds for small and medium businesses Industry Promotion Section, Minato City Livelihood Support Section, Minato Council of Social Welfare 3F Minato City Hall 3578-2560・2561 Loans for living assistance and welfare Tax exemption National tax Prefectural tax City/ Ward tax Shiba tax office Azabu tax office Minato Metropolitan Taxation Office Taxation Section, Minato City 5-8-1 Shiba 3-3-5 Nishi-azabu 3-5-6 Azabudai 2F Minato City Hall 3F Minato City Hall Consultation regarding National Health Insurance fees National Health Insurance and Pension Section, Minato City 3578-2593 3578-2111 (ext.2643-5) Information needed Name of facility Location Contact information Flood preparation, sandbags Public Works Subsection, Community Development Section, Each Minato City Regional City Office Each Regional City Office (see below) Each Regional City Office (see below) Fire Station, paramedics Shiba Fire Station , Shiba Volunteer Fire Company Azabu Fire Station , Azabu Volunteer Fire Company Akasaka Fire Station , Akasaka Volunteer Fire Company Takanawa Fire Station , Takanawa Volunteer Fire Company 6-18-15 Shimbashi 3-4-42 Moto-azabu 2-16-9 Minami-aoyama 2-4-12 Shirokane Police Tokyo Metropolitan streets/roads Routes 1 and 15 Route 246 Sewers Tokyo Metropolitan Government Bureau of Construction First Construction Office, Minato Area Atago Police Station Azabu Police Station Akasaka Police Station Takanawa Police Station Mita Police Station Tokyo Wangan Police Station 6-18-12 Shimbashi 4-7-1 Roppongi 4-18-19 Akasaka 3-15-20 Takanawa 4-2-12 Shibaura 2-7-1, Aomi, Koto City 1-2-13 Mita 3452-1464 3343-4061 (Nights and holidays) Tokyo Kokudo, Shinagawa Branch Tokyo Kokudo, Yoyogi Branch Bureau of Sewerage, Tokyo Metropolitan Government, Chubu Sewerage Office, Minato Branch, (excluding Daiba area) Bureau of Sewerage, Tokyo Metropolitan Government, Tobu 1st Sewerage Office, Koto Branch (only for Daiba area) 1-1-3 Yashio, Shinagawa City 4-30-8 Yoyogi, Shibuya City 2-20-14 Mita, Minato City 7-1-14 Toyo, Koto City (Nights and holidays) (Nights and holidays) (Nights and holidays) (Nights and holidays) Each Regional City Office Shiba Regional City Office Public Works Subsection, Community Development Section 1-5-25 Shibakoen Tel: 3578-3111 Tel: 3578-2032 Akasaka Regional City Office Public Works Subsection, Community Development Section 4-18-13 Akasaka Tel: 5413-7011 Tel: 6812-9550 Azabu Regional City Office Public Works Subsection, Community Development Section 5-16-45 Roppongi Tel: 3583-4151 Tel: 5114-8803 Takanawa Regional City Office Public Works Subsection, Community Development Section 1-16-25 Takanawa Tel: 5421-7611 Tel: 5421-7941 Shibaura-konan Regional City Office Public Works Subsection, Community Development Section 1-16-1 Shibaura Tel: 3456-4151 Tel: 6400-0032 Furukawa River Underground Regulating Reservoir Current riverbed Inner diameter Φ7.5 m Overburden 30～40m Current revetment Furukawa River Furukawa River ※Indicate the location of the evacuation center on this map and confirm the route from your home by walking it. ※Take care as cliffs and steep hills are vulnerable to landslides.
