Flood Hazard Maps 3 Areas That Require Early Eviction and Evacuation

Fukuroi City FloodFlood HazardHazard MapsMaps Guidebook

March 2019

1. Flood Risk in Fukuroi City (General Explanation) ・・・・・・1 2. How to evacuate ・・・・・・3 1 Preparation for Disaster 2 From Evacuation Preparation to Evacuation

3. Preparation to Evacuate ・・・・・・7 1 Key Points in an Evacuation 2 Advance Preparation for Evacuation

4. How to read a flood hazard map・・・・・・11 1 How a flood hazard map is made 2 Information to better understand flood hazard maps 3 Areas that require early eviction and evacuation

5. How to find information ・・・・・・17 1 How to find evacuation information 2 How to find rainfall and river level information

6. Disasters caused by heavy rain ・・・・・・19 1 Sediment Disaster

7. Continuous inundation time ・・・・・・21 8. Water level and rainfall point・・・・・・27 9. Rain strength and rainfall measurement points ・・・・・・30 10. Terrain and disaster characteristics of Fukuroi City ・・・・・・31

For inquiries about the Fukuroi City Flood Hazard Map

Regarding inundation estimates Fukuroi City Urban Construction Department, Construction Division

1-1 Araya 1-chome, Fukuroi-shi TEL: 0538-44-3166 (Flood Countermeasures Office) / 0538-44-3130 (Administration)

Regarding evacuation Fukuroi City Crisis Management Department, Crisis Management Division 2907 Kunimoto, Fukuroi-shi TEL: 0538-86-3701 1

*Read this page vertically 1.

Not expected to flood, but… This map comprehensively displays the inundation Flood RiskinFukuroiCity Low-lying areas area in the event that the Ota River, Haranoya River, Shikiji River, Ugari River, or Saka River overflow, as There are many rivers in the city. This region is lowland shaped by river floods. Although well as the area in danger of inundation from other not expected to flood, there still is danger of rivers and sediment disaster hazard areas. inundation. There are many scenarios depending on whether This includes valley plains, floodplains, river banks will actually breach during heavy rain, wetlands, deltas, lowland, former river beds, and former river areas colored on the which rivers breach their banks, and when they breach natural topography classification map. their banks, so future flood disasters are both complex (These may differ from the actual disaster area.) and uncertain. Administrators and users of public welfare facilities should check flood water depth and discuss how to evacuate in advance.

Fukuroi City Public Welfare FacilitiesSearch Here you can check facilities and flood water depth. 1

*Read this page vertically 1.

Fukuroi City Public Welfare FacilitiesSearch Here you can check facilities and flood water depth.

Sediment Disaster Hazard Estimations

Areas susceptible to sediment disaster

There are many areas at high risk of slope collapse and debris flow within the city. This map is colored to show sediment disaster hazard areas. (These may differ from the actual disaster area.)

Flooding Estimations

Areas susceptible to river flooding In the event that the Ota River, Haranoya River, Shikiji River, Ugari River, or Saka River overflow, inundation is predicted to reach a depth of 5 meters or more in the deepest areas.

This map is colored to show estimated inundation areas of the Ota River, Haranoya You can also check this map on your computer. River, Shikiji River, Ugari River, or Saka River. (These may differ from the actual disaster area.) Fukuroi City Flood Hazard Map Search 2 2. How to evacuate

1 Preparation for Disaster

Most YouYou areare responsibleresponsible forfor protectingprotecting youryour ownown life.life. Important DoDo notnot assumeassume thatthat disastersdisasters willwill notnot happenhappen toto you.you. BeBe preparedprepared forfor disasters.disasters.

Act with the assumption that Take responsibility “a flood may occur” to protect yourself

It’s often said that “Disasters come when you’ve just forgotten about In order to eliminate casualties from disasters, it is important to have a them,” but recently rain fall patterns have changed such that you could basic understanding of the fact that “In an emergency, you must take say “Disasters come before you’ve forgotten the last one.” responsibility to protect yourself.”

Envisioning flooding Gather information from probable situations and characteristics of the area for yourself

At the flood disaster site, one often hears the words “I didn’t think the It is important that you get information for yourself quickly. Information is water would come this far.” Possible flood situations that can occur once spread through various media, including television, radio, the Internet, rain starts to fall vary depending on the characteristics of the area. and your own neighbors, so try heed the latest information.

Should you evacuate? Should you stay? Estimations Put your life first and do your best aren't everything Each map in this guidebook is created assuming certain conditions and It is important to evacuate to safe shelter before inundation starts, but it scenarios. Actual flood damage may not be as expected. can be very dangerous to force your way through flood waters in order It is important to understand that flooding is a natural phenomenon, and to evacuate. Act appropriately according to the situation. it can behave unpredictably.

3 4 Take responsibility to protect yourself

In order to eliminate casualties from disasters, it is important to have a basic understanding of the fact that “In an emergency, you must take responsibility to protect yourself.”

Gather information for yourself

It is important that you get information for yourself quickly. Information is spread through various media, including television, radio, the Internet, and your own neighbors, so try heed the latest information.

Estimations aren't everything

Each map in this guidebook is created assuming certain conditions and scenarios. Actual flood damage may not be as expected. It is important to understand that flooding is a natural phenomenon, and it can behave unpredictably.

4 2. How to evacuate

2 From Evacuation Preparation to Evacuation ThereThere areare dangersdangers youyou wouldwould notnot normallynormally noticenotice whenwhen therethere isis flooding.flooding. LearnLearn thethe correctcorrect stepssteps forfor evacuation,evacuation, soso youyou areare readyready toto makemake judgmentsjudgments onon youryour own.own. The most dangerous judgment you can make is “Surely I will be fine,” “Things are still safe,” or “Nothing serious will happen.” Learn the necessary information for evacuation and how to evacuate correctly, so that you can think and act on your own. ◆ It is dangerous to walk through ◆ Doors can be kept shut by water ◆ Do not pass over bridge underpasses or In addition to the flood hazard map, make sure to check the sediment disaster hazard, tsunami rapidly flowing flood water, even if pressure even in flood water only other low-lying roads that are often hazard, and reservoir pond hazard maps. the water is shallow. a few tens of centimeters deep. flooded.

Advance Preparation: Decide where you will evacuate to ▶▶▶▶▶▶▶▶▶ Gather information to make judgments on evacuation ▶▶▶▶▶ Evacuate

Warning levels announced by the Japan Meteorological Agency are approximate information only. How you evacuate changes depending on where are and the situation at time About 1 day before Half a day to a few hours before 2 hours before Check the Eviction Weather Heavy rain falls in a characteristics Check your evacuation site There is a Rainfall evacuation Rain starts Heavy rain Heavy rain broad area as seen possibility of gets Designated emergency of the place you live in Situation falling starts gets stronger only once every few heavy rain stronger evacuation site decades ● Danger of Flooding ● “Eviction Evacuation” Water damage due to flooding

to designated emergency Stay alert to information when there is rough weather Heavy rain special ・Depth of flooding Heavy Heavy rain warning evacuation sites Warning Level 2 Warning Level 3 warning Warning Level 4 【CHECK】 Disaster rain alert (flood damage) ( ) m (flood damage) □ When water floods a one-story house • The principle of evacuation is “eviction Prevention ・Floors of your house □ When water floods a second story or higher house evacuation” . Weather Record rapid heavy rain ( ) floors □ When water is expected to flood for a long time • You must make advance preparations, make Information information (Japan Eviction ・Distance to designated emergency □ When you are in an area threatened by house judgements, and act quickly. Determine how to evacuate Meteorological Flood evacuation evacuation sites and nearby safe collapse • It is effective to evacuate to a safe place such Flood alert Warning Level 2 Warning Level 3 Agency) warning Safe places nearby places □ When you are in a sediment disaster hazard area as the home of a relative or acquaintance ( ) m Designated Warning Level 3 Warning Level 4 Warning Level 5 Announced as “XX Flood Warning Flood Hazard Flood Information Information Occurrence Rivers River flooding YY Flood alert information Water has reached Water has Information “Eviction evacuation” Flood Forecasts information” evacuation judgment reached flood (River Administrator Flooding Find out first! to a safe place nearby water level danger level occurs 【CHECK】 Japan Meteorological Agency) Time it takes to walk 500 m □ When inundation has started and it is Warning Level 3 Warning Level 4 Warning Level 5 ・Adults: About 6 to 8 minutes Guidelines: Evacuation Evacuation Evacuation Evacuation Seniors: About 10 minutes dangerous to move to a designated ・ preparation advisory order emergency evacuation site Information Seniors (City) (Emergency) Start evacuation Securing safety “Secure your safety indoors indoors Sediment Disaster (Vertical (vertical evacuation)” ● Danger of Sediment 【CHECK】 Disaster Sediment Disaster evacuation) in a safe place inside of your own house Warning Level 4 Prevention Heavy rain warning information 2nd floor or above ● □ When it is actually more dangerous to go outside Heavy rain warning Disasters Warning Level 2 Warning Level 3 Examples of safe places Weather alert (Sediment ・The place you live in Disaster) Heavy rain special warning • Upstairs Information (Sediment Disaster) (is / is not) in a (Japan Meteorological Agency) sediment disaster hazard area • When it is difficult to follow evacuation • Rooms far from cliffs routes at night or in heavy rain Warning Level 3 Warning Level 4 Warning Level 5 ・Your evacuation route (is / is not) • When inundation has started and it is Evacuation Evacuation Evacuation Evacuation in a sediment disaster hazard area preparation advisory order dangerous to go outside Information Seniors (City) (Emergency) Start evacuation

Evacuation Preparation / Starting Evacuation of Seniors Warning Level 3 Evacuation Advisory Warning Level 4 (Evacuate to a safe place) Evacuation Order (emergency) Warning Level 4 (Evacuate to a safe place) Use this as information to decide when to evacuate! ● People who need more time to evacuate ⇒ Start evacuation. ● Evacuate immediately to designated ● Evacuate immediately (urgently). Start evacuating seniors, people with disabilities, infants, and their supporters. emergency evacuation sites. If it is dangerous to evacuate to a designated If it is dangerous to evacuate to a designated emergency Evacuation information ● Other people ⇒ Be prepared to evacuate at any time. emergency evacuation site, then evacuate to a “safe evacuation site, then evacuate to a “safe place nearby” or a published by the city Prepare to evacuate, and evacuate early if you think you are in danger based on place nearby” or a “safer place within your house.” “safer place within your house.” “disaster preparation weather information” or “water level information” .

* In a sudden disaster, orders such as evacuation advisory warnings may not come in time. If you feel * If you live in an area along a river in danger of rapidly rising water levels or a sediment disaster 5 that you are in danger, start evacuations. hazard area, evacuate as early as possible. 6 ThereThere areare dangersdangers youyou wouldwould notnot normallynormally noticenotice whenwhen therethere isis flooding.flooding.

◆ It is dangerous to walk through ◆ Doors can be kept shut by water ◆ Do not pass over bridge underpasses or rapidly flowing flood water, even if pressure even in flood water only other low-lying roads that are often the water is shallow. a few tens of centimeters deep. flooded.

Gather information to make judgments on evacuation ▶▶▶▶▶ Evacuate

Warning levels announced by the Japan Meteorological Agency are approximate information only. About 1 day before Half a day to a few hours before 2 hours before Eviction Weather Heavy rain falls in a There is a Rainfall evacuation Rain starts Heavy rain Heavy rain broad area as seen possibility of gets Designated emergency Situation falling starts gets stronger only once every few heavy rain stronger evacuation site decades Water damage due to flooding

Stay alert to information when there is rough weather Heavy rain special Heavy Heavy rain warning Warning Level 2 Warning Level 3 warning Warning Level 4 Disaster rain alert (flood damage) Prevention (flood damage) Weather Record rapid heavy rain Information information (Japan Eviction Determine how to evacuate Meteorological Flood evacuation Flood alert Warning Level 2 Warning Level 3 Agency) warning Safe places nearby

Designated Warning Level 3 Warning Level 4 Warning Level 5 Announced as “XX Flood Warning Flood Hazard Flood Information Information Occurrence Rivers River flooding YY Flood alert information Water has reached Water has Information Flood Forecasts information” evacuation judgment reached flood (River Administrator Flooding water level danger level occurs Japan Meteorological Agency)

Warning Level 3 Warning Level 4 Warning Level 5 Evacuation Evacuation Evacuation Evacuation preparation advisory order Information Seniors (City) (Emergency) Start evacuation Securing safety indoors Sediment Disaster (Vertical Disaster Sediment Disaster evacuation) Warning Level 4 Prevention Heavy rain warning information 2nd floor or above Heavy rain warning Warning Level 2 Warning Level 3 Weather alert (Sediment Disaster) Heavy rain special warning Information (Sediment Disaster) (Japan Meteorological Agency)

Warning Level 3 Warning Level 4 Warning Level 5 Evacuation Evacuation Evacuation Evacuation preparation advisory order Information Seniors (City) (Emergency) Start evacuation

Evacuation Advisory Warning Level 4 (Evacuate to a safe place) Evacuation Order (emergency) Warning Level 4 (Evacuate to a safe place)

● Evacuate immediately to designated ● Evacuate immediately (urgently). emergency evacuation sites. If it is dangerous to evacuate to a designated If it is dangerous to evacuate to a designated emergency emergency evacuation site, then evacuate to a “safe evacuation site, then evacuate to a “safe place nearby” or a place nearby” or a “safer place within your house.” “safer place within your house.”

* If you live in an area along a river in danger of rapidly rising water levels or a sediment disaster hazard area, evacuate as early as possible. 6 3. Preparation to Evacuate

1 Key Points in an Evacuation

ItIt isis importantimportant toto checkcheck inin advanceadvance wherewhere youyou willwill escapeescape to.to. 4 Knowledge of flood water PreparePrepare soso thatthat youyou cancan evacuateevacuate safelysafely andand calmly.calmly. Evacuating through If the flood waters are strong and rise to knee flood waters height or higher, then it may be difficult and dangerous for even adults to walk through. It is Dangerous 1 Check safe evacuation routes is important that you decide not to force your way through the waters, but instead secure your safety indoors (vertical evacuation) or evacuate to somewhere nearby. Make sure to confirm with your family and Do not enter flood waters. Escape them if community an evacuation destination and possible. route that are safe against inundation before People and even cars can easily be swept disaster strikes. away. The most important thing is to not approach flowing water.

2 Accurate information gathering and early evacuation 5 Precautions when evacuating by car

It is dangerous to evacuate from your There are many cases of people losing house after it has been inundated. Stay their lives when evacuating by car, such as alert of the latest weather information, getting stuck in an underpass that has disaster information, and evacuation flooded or falling into a river from the road information on the television or radio, and that runs along it. Generally, if the water is be prepared to evacuate if you feel you are 30 cm or deeper, then it is difficult to in danger. evacuate by car.

3 Evacuate with clothes that are easy to move in and emergency gear 6 When inundation has started or evacuation is late

In order to prevent accidents during If you determine that you cannot secure Vertical Evacuation Vertical Evacuation evacuation, wear clothes that are easy to enough time to evacuate or it is too difficult move in and evacuate with your family to evacuate to the designated emergency Safe to take refuge and neighbors as much as possible. evacuation site you had planned on, then Carry a backpack, keep your hands free, evacuate to the second floor or above in a and wear athletic shoes with laces instead safe building such as your own house of boots. (vertical evacuation).

7 8 4 Knowledge of flood water Evacuating through If the flood waters are strong and rise to knee flood waters height or higher, then it may be difficult and dangerous for even adults to walk through. It is Dangerous is important that you decide not to force your way through the waters, but instead secure your safety indoors (vertical evacuation) or evacuate to somewhere nearby. Do not enter flood waters. Escape them if possible. People and even cars can easily be swept away. The most important thing is to not approach flowing water.

5 Precautions when evacuating by car

There are many cases of people losing their lives when evacuating by car, such as getting stuck in an underpass that has flooded or falling into a river from the road that runs along it. Generally, if the water is 30 cm or deeper, then it is difficult to evacuate by car.

6 When inundation has started or evacuation is late

If you determine that you cannot secure Vertical Evacuation Vertical Evacuation enough time to evacuate or it is too difficult to evacuate to the designated emergency Safe to take refuge evacuation site you had planned on, then evacuate to the second floor or above in a safe building such as your own house (vertical evacuation).

8 3. Preparation to Evacuate

PreparationsPreparations to make whenwhen evacuatingevacuating outout of of your your home home 2 Advance preparation to evacuate GetGet emergencyemergency gear. When you evacuate to a designated evacuation site in anticipation of flooding, make certain to bring emergency gear and SpeakSpeak withwith youryour familyfamily aboutabout “evacuation”“evacuation” beforebefore aa disasterdisaster happens.happens. whatever each individual requires. IfIf youyou waitwait untiluntil itit isis timetime toto evacuate,evacuate, thenthen youyou maymay notnot makemake itit outout inin A backpack that will keep both hands free is a convenient choice for an emergency evacuation bag. Try carrying the backpack time.time. on your shoulders to make sure that it is not too heavy. Make adequate preparations yourself so that you can rest assured. Consider where you will evacuate to at an early stage and where you will evacuate to if evacuation starts late, in the 1. If your emergency gear bag is too heavy, it will hinder your evacuation, so lighten the load if it is too heavy. event of a sediment disaster or flood disaster. 2. Prepare dried food, which is relatively light and conveniently edible just by adding water. 3. Prepare one backpack for each person, and keep them distributed in various places where they are easy to pick up and go. 1 Checking danger in your home Use flood hazard maps to check the danger of inundation or sediment disasters reaching your home (or workplace check Things to put in your emergency gear bag (backpack, etc.) or school). 2 Checking whether you will stay at home Mobile phone charger Portable radio Emergency food (canned bread, etc.) / drinking water Flashlight (with spare batteries) Eviction evacuation will be necessary in areas where early eviction evacuation is necessary (see page 15) or areas where there is danger of sediment disasters. Daily necessities (lighter, knife, can opener, tissue paper, plastic bags, etc.)

3 Checking your evacuation destination Candles (heavy, stable type) Clothing (underwear, outerwear, gloves, socks, handkerchief, towel, etc.) Check where you will evacuate to at an early stage and where you will evacuate to if evacuation starts too late. Emergency medicine (bandages, gauze, dressing, triangular bandages, disinfectant, antipyretic, digestives, cold medicine, analgesic, eye medicine, tweezers, etc.)

check Items that may be necessary depending on your family members Evacuation destinations at an early stage Entry column The best rule is to evacuate to somewhere safe at Milk Paper diapers Feminine sanitary products Household medicine (especially anyone who has a chronic illness) an early stage. Reserve stock for seniors and people with disabilities (nursing care items, etc.) When? For example… When? check Gear necessary when evacuating • If you hear about the evacuation preparation / starting evacuation of seniors, or an evacuation advisory. Rain gear (rain coat) Gloves Helmet (disaster hood) • If it is forecast that a major typhoon or heavy rain is Fukuroi City Flood Hazard Map Guidebook (this booklet) Valuables (copies of bankbook, health insurance card, licenses, address book, etc.) coming • If it is expected that rain will continue into the night check Things that are convenient to have • If you feel that the signs of inclement weather are Where? different from how they normally are Blankets/sleeping bags Portable stove Disposable body warmers Disposable chopsticks Sheets to lay on the floor For example… Where? •The nearest designated emergency evacuation site that you can walk to ConsiderConsider wherewhere youyou willwill meetmeet andand howhow youyou willwill contactcontact •A safer place even outside the city, such as the home of a relative or friends familyfamily inin thethe eventevent youyou areare separatedseparated fromfrom them.them. Evacuation destination when you start evacuation too late Entry column If you start evacuation too late, then protect yourself in the place that you consider safest given the location and the circumstances. Quando?When? A meeting place decided Emergency contact info for family, relatives and friends

For example… upon with family Name ： Memo When? •If you start evacuation too late TEL # ： •If there is impending inundation or sediment disaster Name ： Memo

For example… ParaWhere? onde? TEL # ： Where? •The nearest high and sturdy building or high Means of contact decided Name ： Memo ground upon with family • A high place in your home, in a room far from TEL # ： any slopes •Anywhere you can run to, even if it is not a Name ： Memo designated emergency evacuation site TEL # ：

9 10 PreparationsPreparations to make whenwhen evacuatingevacuating outout of of your your home home GetGet emergencyemergency gear. When you evacuate to a designated evacuation site in anticipation of flooding, make certain to bring emergency gear and whatever each individual requires. A backpack that will keep both hands free is a convenient choice for an emergency evacuation bag. Try carrying the backpack on your shoulders to make sure that it is not too heavy. Make adequate preparations yourself so that you can rest assured. 1. If your emergency gear bag is too heavy, it will hinder your evacuation, so lighten the load if it is too heavy. 2. Prepare dried food, which is relatively light and conveniently edible just by adding water. 3. Prepare one backpack for each person, and keep them distributed in various places where they are easy to pick up and go. check Things to put in your emergency gear bag (backpack, etc.)

Mobile phone charger Portable radio Emergency food (canned bread, etc.) / drinking water Flashlight (with spare batteries)

Daily necessities (lighter, knife, can opener, tissue paper, plastic bags, etc.)

Candles (heavy, stable type) Clothing (underwear, outerwear, gloves, socks, handkerchief, towel, etc.)

Emergency medicine (bandages, gauze, dressing, triangular bandages, disinfectant, antipyretic, digestives, cold medicine, analgesic, eye medicine, tweezers, etc.) check Items that may be necessary depending on your family members

Milk Paper diapers Feminine sanitary products Household medicine (especially anyone who has a chronic illness)

Reserve stock for seniors and people with disabilities (nursing care items, etc.) check Gear necessary when evacuating

Rain gear (rain coat) Gloves Helmet (disaster hood)

Fukuroi City Flood Hazard Map Guidebook (this booklet) Valuables (copies of bankbook, health insurance card, licenses, address book, etc.) check Things that are convenient to have

Blankets/sleeping bags Portable stove Disposable body warmers Disposable chopsticks Sheets to lay on the floor

ConsiderConsider wherewhere youyou willwill meetmeet andand howhow youyou willwill contactcontact familyfamily inin thethe eventevent youyou areare separatedseparated fromfrom them.them.

A meeting place decided Emergency contact info for family, relatives and friends

upon with family Name ： Memo TEL # ：

Name ： Memo TEL # ： Means of contact decided Name ： Memo upon with family TEL # ：

Name ： Memo TEL # ：

10 4. How to read a flood hazard map

1 How flood hazard maps are made 2 How flood hazard maps are made

1 Flood estimated inundation map (Made by the Shizuoka Prefecture)

TheThe followingfollowing isis anan explanationexplanation ofof thethe conditionsconditions andand methodsmethods Simulations were made of the flooding situation or the largest expected rainfall, assuming multiple levee breaches for each target river, and created the map by overlapping the maximum inundation depth for each levee break point. forfor makingmaking floodflood hazardhazard maps.maps. 1 Target rainfall of the flood hazard River The “Fukuroi Flood Hazard Map” is made based on the results of simulating flood situations in the estimated maximum Railway rainfall* assumed in the Ota River basin (flood estimated inundation area created by the Shizuoka Prefecture). Flood plain *The estimated maximum rainfall was defined by dividing Japan into 15 regions with similar rainfall characteristics, Results for levee break point 1 Road RiverRio and finding the maximum rainfall amount measured in each region. River

• 629.5 mm for a 24-hour period in the Ota River basin. This is about 1.8 times the amount of rainfall on the Railway conventional flood hazard map (355.1 mm in 24 hours). Railway Flood plain Flood plain Results for levee break point 2 Road • In addition, you can check flood estimated inundation Road areas in Shizuoka Prefecture on the Internet. Shizuoka Prefecture Flooding Search River

• The heaviest rainfall ever measured around Fukuroi City was 508.0 mm in 24 hours, at the Shizuoka Regional Railway Meteorological Observatory during the great Tanabata rains (July 1974). In addition, rainfall of over 1,000 mm in Flood plain 24 hours has been recorded in other part of Japan. Results for levee break point 3 Road (1,114 mm in 24 hours at Hiso Station in Nakacho, Tokushima Prefecture) For this reason, the entire range shown will not be inundated by a single flood. This map shows how much risk there is of a target river flooding. • Including the heavy rain of July 2018, there was rain exceeding past records for each region in recent years, so Flood Hazard Map there is also a strong probability that Fukuroi City will experience『 rain like never before』. 2 This map lists information about evacuation such as designated emergency evacuation sites in flood estimated 24-hour rainfall volume Number of places that reached inundation area maps. (at the point of maximum a new record high Designated Emergency Evacuation Site Major Public Facility Shizuoka Prefectural Water Level rainfall measured) measurement Measurement Station Municipal Boundary Main Road Railroad 691.5 mm Reservoir Sediment Disaster Hazard Area July 2018 Heavy Rain (Umaji Village, Aki District, Nationwide: 77 places Sediment Disaster Special Hazard Area Slope Collapse Danger Spots *These areas may be deleted depending on the Kochi Prefecture) results of basic surveys. Underpass Danger Spots

(Red) Area with inundation depth of less than 5.0 m

(Pink) Area with inundation depth of 3.0 m to 5.0 m July 2017 545.0 mm (Orange) Area with inundation depth of 0.5 m to 3.0 m (Yellow) Area with inundation depth more than 0.5 m These areas may be in danger of houses Northern Kyushu (Asakura City, Nationwide: 12 places (Purple) collapsing due to floodwater flows and river bank erosion Heavy Rain Fukuoka Prefecture)

September 2015 551.0 mm Kanto & Tohoku (Nikko City, Tochigi Nationwide: 16 places Heavy Rain Prefecture)

Source: From the Japan Meteorological Agency website “Meteorological events that caused disasters”

*Flood estimated inundation area maps may differ from the real disaster.

11 12 2 How flood hazard maps are made

1 Flood estimated inundation map (Made by the Shizuoka Prefecture)

Simulations were made of the flooding situation or the largest expected rainfall, assuming multiple levee breaches for each target river, and created the map by overlapping the maximum inundation depth for each levee break point.

River

Railway Flood plain Results for levee break point 1 Road RiverRio River

Railway Railway Flood plain Flood plain Results for levee break point 2 Road Road River

Railway Flood plain Results for levee break point 3 Road For this reason, the entire range shown will not be inundated by a single flood. This map shows how much risk there is of a target river flooding.

2 Flood Hazard Map This map lists information about evacuation such as designated emergency evacuation sites in flood estimated inundation area maps.

Designated Emergency Evacuation Site Major Public Facility Shizuoka Prefectural Water Level Measurement Station Municipal Boundary Main Road Railroad Reservoir Sediment Disaster Hazard Area Sediment Disaster Special Hazard Area Slope Collapse Danger Spots *These areas may be deleted depending on the results of basic surveys. Underpass Danger Spots

(Red) Area with inundation depth of less than 5.0 m

(Pink) Area with inundation depth of 3.0 m to 5.0 m

(Orange) Area with inundation depth of 0.5 m to 3.0 m

(Yellow) Area with inundation depth more than 0.5 m These areas may be in danger of houses (Purple) collapsing due to floodwater flows and river bank erosion

*Flood estimated inundation area maps may differ from the real disaster.

12 4. How to read a flood hazard map

2 Information for better understanding the flood hazard map lanatio xp n 4 E TryTry toto understandunderstand thethe contentcontent ofof thethe floodflood hazardhazard mapmap andand Water level at water gauging stations discussdiscuss wherewhere youyou willwill evacuateevacuate toto withwith youryour familyfamily onon aa regularregular Shizuoka Prefecture has installed water gauges on the main rivers in Fukuroi City, and announces observation results in real time over the Internet. Major gauging stations can tell the degree of danger based on the water level, basis.basis. with the relationship between river water level and evacuation information issued shown in the following graphic. (See page 27 of this guidebook for the position of the water gauge) lanatio xp n 1 E Rankings for maximum water depth River water level Information issued by Fukuroi City Issuance standards, etc.

The rankings for water depth when there is flooding have the following meaning. Flooding occurs Issued when there is a risk of water reaching Evacuation order (emergency) 5.0 m: This will submerge the second floor of a ▲ the top of the dike, or when the risk of levee issued▲ (Red) typical house. breaks increases due to abnormal water 5.0m Warning Level 4 leakage, cracks, slides, etc. 3.0 m: This would reach the height of the bottom of the second floor in a typical house. When Issued when water has reached the ▲Evacuation advisory issued▲ the water rises above this height, then it will flooding danger water level and there (Pink) Warning Level 4 3.0m be dangerous to evacuate even to the is danger that it will rise even higher Flooding second floor. Danger Water Issued when water has reached the 0.5 m: This would reach the height of the first floor Level ▲Evacuation preparation / starting evacuation judgment water level, and evacuation of seniors order issued▲ there is danger that it will rise even in a typical house. When the water rises Warning Level 3 (Orange) higher 0.5m Evacuation Judgment (Yellow) above this height, it is likely to flood the Water Level floor. Flooding Alert Water Level lanatio xp n 2 E planation Areas with danger of houses collapsing x 5 E Sediment Disaster hazard areas This indicates areas in danger of houses collapsing due to the flood waters from levee breaks knocking down The prefectural government designates areas that should beware of sediment disasters as sediment disaster houses, or flood waters within river channels eroding river banks and causing houses to collapse. hazard areas and special hazard areas. The range of houses collapsing due to flood water is based on calculations made for the structure and weight of Sediment disaster hazard areas and special hazard areas may have “debris flow” , “slope collapse” , and “landslides” , standard two-story wooden buildings subjected to maximum water depth and flow speed found by numerical but these categories are not shown on the map, and only the areas are shown. There are no designated areas in danger of simulations. “landslides” in Fukuroi City. The range of houses collapsing due to river bank erosion is estimated based on past experiences of river erosion width which has occurred throughout the country.

lanatio xp n 3 E Continuous inundation time [Sediment Disaster Special Hazard Area (Red Zone)] These areas are recognized as being in danger of severe harm to Beware that if you do not follow eviction evacuation in areas expected to be inundated for a long time, then the the life or limb of residents from buildings being damaged in the following problems may occur. event that steep slopes collapse. • If the flood water is deep, you may be unable to leave your house. [Sediment Disaster Hazard Area (Yellow Zone)] • You may run out of water and food even if you had stores. • The general hygiene of your environment may deteriorate. These areas are recognized as being in danger of severe harm to • You may be unable to help if those who gets sick. the life or limb of residents in the event that steep slopes collapse. • Those who receives regular medical care will not be able to receive it. • Electricity going out will make it impossible to get information. • Electricity, gas, and water stopping will make it a more difficult environment to live in. 13 14 lanatio xp n 4 E Water level at water gauging stations

Shizuoka Prefecture has installed water gauges on the main rivers in Fukuroi City, and announces observation results in real time over the Internet. Major gauging stations can tell the degree of danger based on the water level, with the relationship between river water level and evacuation information issued shown in the following graphic. (See page 27 of this guidebook for the position of the water gauge)

River water level Information issued by Fukuroi City Issuance standards, etc.

Flooding occurs

Issued when there is a risk of water reaching Evacuation order (emergency) ▲ the top of the dike, or when the risk of levee issued ▲ breaks increases due to abnormal water Warning Level 4 leakage, cracks, slides, etc.

Issued when water has reached the ▲Evacuation advisory issued▲ flooding danger water level and there Warning Level 4 is danger that it will rise even higher Flooding Danger Water Issued when water has reached the Level ▲Evacuation preparation / starting evacuation judgment water level, and evacuation of seniors order issued▲ there is danger that it will rise even Warning Level 3 Evacuation Judgment higher Water Level Flooding Alert Water Level

lanatio xp n 5 E Sediment Disaster hazard areas

The prefectural government designates areas that should beware of sediment disasters as sediment disaster hazard areas and special hazard areas. Sediment disaster hazard areas and special hazard areas may have “debris flow” , “slope collapse” , and “landslides” , but these categories are not shown on the map, and only the areas are shown. There are no designated areas in danger of “landslides” in Fukuroi City.

[Sediment Disaster Special Hazard Area (Red Zone)] These areas are recognized as being in danger of severe harm to the life or limb of residents from buildings being damaged in the event that steep slopes collapse.

[Sediment Disaster Hazard Area (Yellow Zone)] These areas are recognized as being in danger of severe harm to the life or limb of residents in the event that steep slopes collapse.

14 4. How to read a flood hazard map

“Areas“Areas thatthat requirerequire earlyearly evictioneviction evacuation”evacuation” defineddefined byby FukuroiFukuroi CityCity 3 Areas that require early eviction evacuation Flood Riverbank water flow erosion FukuroiFukuroi CityCity payspays specialspecial attentionattention toto “Areas“Areas thatthat requirerequire earlyearly 1. Areas in danger of houses collapsing due to flood water evictioneviction evacuation,”evacuation,” whichwhich faceface thethe followingfollowing 33 threatsthreats or riverbank erosion Areas where it is expected There have been cases of houses collapsing due to flood waters and people being inundated so that wooden houses will Display on the map collapse due to strong they can no longer move, such as the levee break caused by Kanto & Tohoku heavy rains of water flows caused by Purple September 2015 or the Northern Kyushu heavy rains of July 2017. Houses can be washed away levees breaking or levees and the ground will be near rivers or flooded for more than 3 days in low lying areas. In areas 1 to 3, evacuate to a safe eroded by strong flows from the river place, rather than going to the second floor or above of a building. Kurihara City, Miyagi Prefecture Asakura City, Fukuoka Prefecture (From Flood Report 2015) (From Flood Report 2017)

1. Areas in danger of houses collapsing 2. Areas in danger of flood water depth exceeding 3 meters 2. Areas in danger of flood water depth exceeding 3 meters Areas where it is expected “Areas in danger of houses collapsing” and “Areas in danger of flood water depth exceeding 3 meters” are on the that flood waters will reach Display on the map flood hazard map. the second floor or higher (Red) 3meters of typical houses (Pink) or higher Tanabe City, Wakayama Prefecture 3. Areas in danger of flooding continuously for 3 days or more (From Flood Report 2015) “Areas in danger of flooding continuously for 3 days or more” can be checked in the “Continuous Flood Time Maps” on pages 21 to 26 of this guidebook. 3. Areas in danger of flooding continuously for 3 days or more Areas in danger of flood waters exceeding 50 cm Day Before Project Display on the map The and continuing for 3 days (Green) or longer 50cm or higher Surprised by the violence Daisen City, Akita Prefecture - The earth under houses was swept away - (From Flood Report 2011) of turbid waters Uji City, 70s, male, district officer The Day Before Project I am a member of a local disaster prevention team. When I was patrolling my neighborhood flooded in water, my older sister who lives Direction for evacuation was - How evacuating from a landslide without alone called and cried to me “Help! There’ s flood of turbid water in hesitation saved lives - front of my house!” decided in advance Ube City, 40s, Male, Government Worker I rushed to get in my car, but found that the road was covered by a This is a story about a married couple I spoke with. They had lunch on flow of turbid water and there was no way I could have driven through their plates and were ready to eat around noon, when they heard a loud rumbling noise from the direction of the mountains. They wondered what it, so I abandoned my car and walked. it was and looked outside, only to see the mountain had collapsed, and My sister’ s house is at the back of a cul-de-sac with 8 houses. The debris was flowing towards them. house was flooded up to the floor, but the turbid water flowing in from They knew they were in danger, and the husband was only had his the road leading to the temple on a hill pooled in this cul-de-sac. Her long underwear and an athletic shirt on, but he grabbed a shirt and ran house was surrounded by a 2-meter concrete wall, and with nowhere with his wife up the mountain behind their house where there are no else to go the turbid flow swirled and swept away all of the earth under house. The house still stood, but there roads. When I asked why they ran up the mountain, he told me “When was no earth under it. In the neighboring houses, earth and sand had piled up nearly to the second floor. we built the house we talked about where we could escape to in a No one had expected water would flow from the road leading to the temple on a hill, so I think people in that disaster, and settled on the mountain behind the house.” area were shocked. They left their car by the side of the road, but that was in the direction the debris was flowing. If they had fled to the road, they certainly would have died. Source: From the Cabinet Office website “The Day Before Project: Heavy Rain from a Front (August 2012)” If you learn about where you live, what kind of danger it is exposed to, and what has happened in that area in the past, you can consider what you should do to prepare and where you can evacuate to. It is important that you think in specific terms and take responsibility for protecting yourself.

Source: From the Cabinet Office website “The Day Before Project: July 2009, Chugoku & Northern Kyushu Heavy Rains (July 2009)”

15 16 “Areas“Areas thatthat requirerequire earlyearly evictioneviction evacuation”evacuation” defineddefined byby FukuroiFukuroi CityCity Flood Riverbank water flow erosion 1. Areas in danger of houses collapsing due to flood water or riverbank erosion Areas where it is expected that wooden houses will Display on the map collapse due to strong water flows caused by Purple levees breaking or levees and the ground will be eroded by strong flows

from the river Kurihara City, Miyagi Prefecture Asakura City, Fukuoka Prefecture (From Flood Report 2015) (From Flood Report 2017)

2. Areas in danger of flood water depth exceeding 3 meters Areas where it is expected that flood waters will reach Display on the map the second floor or higher (Red) 3meters of typical houses (Pink) or higher Tanabe City, Wakayama Prefecture (From Flood Report 2015)

3. Areas in danger of flooding continuously for 3 days or more Areas in danger of flood waters exceeding 50 cm Display on the map and continuing for 3 days (Green) or longer 50cm or higher Daisen City, Akita Prefecture (From Flood Report 2011)

The Day Before Project Direction for evacuation was - How evacuating from a landslide without hesitation saved lives - decided in advance Ube City, 40s, Male, Government Worker This is a story about a married couple I spoke with. They had lunch on their plates and were ready to eat around noon, when they heard a loud rumbling noise from the direction of the mountains. They wondered what it was and looked outside, only to see the mountain had collapsed, and debris was flowing towards them. They knew they were in danger, and the husband was only had his long underwear and an athletic shirt on, but he grabbed a shirt and ran with his wife up the mountain behind their house where there are no roads. When I asked why they ran up the mountain, he told me “When we built the house we talked about where we could escape to in a disaster, and settled on the mountain behind the house.” They left their car by the side of the road, but that was in the direction the debris was flowing. If they had fled to the road, they certainly would have died. If you learn about where you live, what kind of danger it is exposed to, and what has happened in that area in the past, you can consider what you should do to prepare and where you can evacuate to. It is important that you think in specific terms and take responsibility for protecting yourself.

Source: From the Cabinet Office website “The Day Before Project: July 2009, Chugoku & Northern Kyushu Heavy Rains (July 2009)”

16 5. How to get information

1 How to get evacuation information ItIt isis importantimportant toto obtainobtain informationinformation yourself,yourself, andand obtainobtain thethe latestlatest informationinformation Get information on the smartphone app When the danger of flood and sediment disasters is approaching, all sorts of information are put out there. When there is expected to be heavy rain due to approaching typhoons are low pressure fronts ▶Yahoo! Disaster Prevention Bulletin However, due to various factors, it may be difficult for Don’t just wait for information to reach you, but be ready to find that information yourself. you to obtain that information. This service broadcasts emergency information about the Television & Radio Ministry of Land, Infrastructure, approach of typhoons and the opening of evacuation sites. ◆ If you close rain shutters in a storm and go to Actively gather Transport and Tourism sleep… information! Japan Meteorological How to register Homepage Agency Shizuoka Prefecture ◆ If you do not have the television or radio on… Smartphone app https://emg.yahoo.co.jp ◆ If the power goes out… Install the app, and set our area to “Fukuroi City” . If you just wait for information, the situation may get Mellow Net (email) You can also access the app from the QR code below. worse, and you may miss the right time to evacuate. Emergency Bulletin Email Check the Yahoo! Disaster Prevention Bulletin website for When disasters are likely to occur, obtain information information about how to use the app. yourself and pay attention to the circumstances Radio Broadcasting System around you. (Disaster Prevention Fukuroi City Hall Administrative Radio) For iPhone For Android Receive emails （App Store）（Google Play） Find it on television ▶Fukuroi City Information Distribution Service – Mellow Net ▶Emergency Bulletin Email

This service delivers information from Fukuroi City on disaster This service delivers emergency ▶NHK News and Disaster Prevention prevention and crime to a registered mobile phone or PC email information to mobile phones which ▶Data broadcast This service offers information about the expected path of address. support emergency alert emails. On televisions compatible with data typhoons and flooding of rivers. How to register How to register broadcasts, press the “d button” to Use the QR code on the right to send a blank email to the Sometimes settings must be made, so check weather information and disaster ▶NHK Net Radio Rajiru ★ Rajiru registration email address (no subject or text is necessary). contact your mobile phone service Using this app, you can listen to NHK radio broadcasts on the provider for more information. information. Internet. 2 How to get information on rainfall and river water level

Information Sources Internet Access Information you can obtain Information Sources Internet Access Information you can obtain Shizuoka Prefecture: Danger level of flooding and Sedimentm Disaster https://www.pref.shizuoka.jp Information on debris flows Japan Meteorological Agency Website https://www.jma.go.jp/jma/index.html sediment disasters Hazard Information /kensetsu/ke-350/keikai/ and destruction of slopes on small to medium size rivers (For PC and smartphone)

Estimated inundation Area Maps Shizuoka Prefecture: Weather forecast https://www.pref.shizuoka.jp Sediment Disaster Information Maps JMA: Shizuoka Local Meteorological Office River Works Bureau https://www.jma-net.go.jp/shizuoka/ Earthquake and tsunami information /kensetsu/ke-320/index.html Designated status of sediment (For PC and smartphone) (For PC and smartphone) Alerts and warnings, etc. disaster (special) hazard areas

Ministry of Land, Infrastructure, Nationwide rainfall, Transport and Tourism: Disaster https://www.river.go.jp flood forecasts Fukuroi City Website https://www.city.fukuroi.shizuoka.jp/ prevention information for rivers Alerts and warnings, etc. (For PC and smartphone) Disaster and prevention information of various types in Fukuroi City Ministry of Land, Infrastructure, Transport and Tourism: Disaster Fukuroi City Website http://www.mlit.go.jp/saigai/bosaijoho/ Real time rainfall, etc. http://www.city.fukuroi.shizuoka.jp/i/ Prevention Information Service Center (For smartphone) (For PC and smartphone)

Rainfall, river water level Shizuoka Prefecture: Sipos Radar https://plus.sugumail.com/usr Weather information, http://sipos.pref.shizuoka.jp/ Live cameras Fukuroi City Mellow Net (For PC and smartphone) /fukuroi/home disaster prevention information Alerts and warnings, etc.

17 18 Get information on the smartphone app approaching typhoons are low pressure fronts ▶Yahoo! Disaster Prevention Bulletin but be ready to find that information yourself. This service broadcasts emergency information about the Ministry of Land, Infrastructure, approach of typhoons and the opening of evacuation sites. Transport and Tourism Japan Meteorological How to register Agency Shizuoka Prefecture https://emg.yahoo.co.jp Install the app, and set our area to “Fukuroi City” . You can also access the app from the QR code below. Check the Yahoo! Disaster Prevention Bulletin website for information about how to use the app.

Fukuroi City Hall

For iPhone For Android （App Store）（Google Play） Find it on television

▶NHK News and Disaster Prevention ▶Data broadcast This service offers information about the expected path of On televisions compatible with data typhoons and flooding of rivers. broadcasts, press the “d button” to check weather information and disaster ▶NHK Net Radio Rajiru ★ Rajiru information. Using this app, you can listen to NHK radio broadcasts on the Internet.

Information Sources Internet Access Information you can obtain Shizuoka Prefecture: Sedimentm Disaster https://www.pref.shizuoka.jp Information on debris flows Hazard Information /kensetsu/ke-350/keikai/ and destruction of slopes (For PC and smartphone)

Estimated inundation Area Maps Shizuoka Prefecture: https://www.pref.shizuoka.jp Sediment Disaster Information Maps River Works Bureau /kensetsu/ke-320/index.html Designated status of sediment (For PC and smartphone) disaster (special) hazard areas

Fukuroi City Website https://www.city.fukuroi.shizuoka.jp/

Disaster and prevention information of various types in Fukuroi City Fukuroi City Website http://www.city.fukuroi.shizuoka.jp/i/ (For smartphone)

https://plus.sugumail.com/usr Weather information, Fukuroi City Mellow Net /fukuroi/home disaster prevention information

18 6. Disasters caused by heavy rain

1 Sediment Disasters The Day Before Project

Caught off guard by light - The danger didn’ t seem as severe as a typhoon - YouYou mustmust bebe awareaware ofof sedimentsediment disastersdisasters whenwhen therethere isis heavyheavy rain.rain. rain in the morning Amami City, 70s, Male, Neighborhood Officer There were no signs of heavy rain that day. There was only It is commonly said that there are tell-tale signs of sediment disasters which you can feel right before they happen light rain in the morning, so I told my wife we ought to go out to based on past experiences, but in fact slopes frequently collapse without any such signs, offering no reprieve in which the fields. If it was a typhoon, I would have been more alert to to evacuate. If you feel that something is unusual, evacuate immediately. If the rain is too strong and you actually feel danger. that it would be more dangerous to evacuate, then take shelter on the second floor or higher of a strong building, as Then just after 10 AM torrential rain started to pour, and 80% of far from the slope as possible. our village looked like it had been swallowed by the sea. The roads were flooded and water had reached the entire floor of our house. No one was prepared for this, so most of the village evacuated to the community center. The local FM radio station broadcasted information saying that the roads were closed due to flooding and who had evacuated to where, but because the power went out only people who had battery powered radios could hear this information, and some people didn’ t realize anything was wrong because they didn’ t notice that the power was out in the middle of the day. In fact, when a youth group went to a senior home that had not been evacuated, they were told “I first noticed the flooding when the tatami mats started to float up off the floor.” The youth group carried those seniors on their backs to evacuate. There was only light rain when it first started to fall, so no one expected it to get so bad.

Source: From the Cabinet Office website “The Day Before Project: Heavy Rain from a Front (October 2010)”

Slope Collapse This is when the portion close to the surface of a Debris Flow slope is weakened by the permeation of rain or This is when the stones, soil, and sand on hillsides earthquakes and suddenly collapses. The entire or riverbeds is swept away all at once due to long collapse takes only a few moments from start to lasting rains or severe heavy rainfall. Debris can Day Before Project finish, and when it happens near houses people flow at a speed of 20 to 40 kilometers per hour, The frequently fail to escape in time and die as a result. destroying houses and fields in an instant. All the residents knew each other - How evacuations went smoothly - Sanjo City, 60s, Male, City Hall Staff

I live in a small village with only 26 households in the mountains of Sanjo City. Aside from snow piling up in winter, nature is mostly Landslide peaceful here. There is a river nearby, but it flows in a deep channel, so we lived without any concern for floods until then. This is when part or all of a slope slides slowly downhill However, on July 29th, 2011, the rainfall was abnormal. I sensed due to the effects of groundwater and gravity. A huge amount of soil moves at once, so it can cause danger approaching, so I started to patrol the village with the tremendous damage. president of the neighborhood association. The evacuation advisory came soon after. Seniors realized that it Fukuroi City does not have any areas designated as takes time to evacuate, so they took the initiative for evacuation preparations. I think it was only because we being in danger of landslides. live in such a small village that everyone in the neighborhood knew each other, so we all knew who would have difficulty evacuating, and were able to exchange information. We planned out our work and cooperated to get things done. There was also an evacuation shelter designated by Sanjo City, but ultimately we decided to designated the village meeting hall as our evacuation shelter. ◆◇◆◇◆◇◆◇◆ Check the Sediment Disaster Hazard Map ◆◇◆◇◆◇◆◇◆ The evacuation shelter designated by the city is a little bit far away, so we decided that it would be difficult Shizuoka Prefecture has designated sediment disaster hazard areas and sediment disaster special hazard areas for seniors to get there. based on the Sediment Disaster Prevention Law. We made judgments quickly, so people who still had energy after evacuating worked together to secure the Select “Sediment Disaster Danger Points Map” to see hazard areas. roads and direct traffic. We also had the time to assist rescue activities in the neighboring village. I think we were able to move so smoothly because we stay so close from day to day and engage in unified civic activities. On computers… On smartphones… Shizuoka Prefecture Sediment Disasters Search Source: From the Cabinet Office website “The Day Before Project: Heavy Rain in Sanjo City (July 2004 and July 2011)”

19 20 The Day Before Project

Caught off guard by light - The danger didn’ t seem as severe as a typhoon - rain in the morning Amami City, 70s, Male, Neighborhood Officer There were no signs of heavy rain that day. There was only light rain in the morning, so I told my wife we ought to go out to the fields. If it was a typhoon, I would have been more alert to danger. Then just after 10 AM torrential rain started to pour, and 80% of our village looked like it had been swallowed by the sea. The roads were flooded and water had reached the entire floor of our house. No one was prepared for this, so most of the village evacuated to the community center. The local FM radio station broadcasted information saying that the roads were closed due to flooding and who had evacuated to where, but because the power went out only people who had battery powered radios could hear this information, and some people didn’ t realize anything was wrong because they didn’ t notice that the power was out in the middle of the day. In fact, when a youth group went to a senior home that had not been evacuated, they were told “I first noticed the flooding when the tatami mats started to float up off the floor.” The youth group carried those seniors on their backs to evacuate. There was only light rain when it first started to fall, so no one expected it to get so bad.

Source: From the Cabinet Office website “The Day Before Project: Heavy Rain from a Front (October 2010)”

The Day Before Project All the residents knew each other - How evacuations went smoothly - Sanjo City, 60s, Male, City Hall Staff

I live in a small village with only 26 households in the mountains of Sanjo City. Aside from snow piling up in winter, nature is mostly peaceful here. There is a river nearby, but it flows in a deep channel, so we lived without any concern for floods until then. However, on July 29th, 2011, the rainfall was abnormal. I sensed danger approaching, so I started to patrol the village with the president of the neighborhood association. The evacuation advisory came soon after. Seniors realized that it takes time to evacuate, so they took the initiative for evacuation preparations. I think it was only because we live in such a small village that everyone in the neighborhood knew each other, so we all knew who would have difficulty evacuating, and were able to exchange information. We planned out our work and cooperated to get things done. There was also an evacuation shelter designated by Sanjo City, but ultimately we decided to designated the village meeting hall as our evacuation shelter. The evacuation shelter designated by the city is a little bit far away, so we decided that it would be difficult for seniors to get there. We made judgments quickly, so people who still had energy after evacuating worked together to secure the roads and direct traffic. We also had the time to assist rescue activities in the neighboring village. I think we were able to move so smoothly because we stay so close from day to day and engage in unified civic activities.

Source: From the Cabinet Office website “The Day Before Project: Heavy Rain in Sanjo City (July 2004 and July 2011)”

20 7. Continuous Inundation Time Map [Northern Region]

When there is inundation, electric power, tap water, and sewage stop. Living in such an environment for a prolonged •This figure shows the length of time that water depth will be 50 cm or deeper. period of time can be very difficult. Take the time to think about whether or not you can secure safety indoors (vertical •Be careful in areas where it is assumed that flooding will continue for a long time, as you may get left behind. evacuation) and actions to take in advance.Areas in green (continuous inundation time of more than 72 hours) require eviction evacuation as early as possible.

Legend Tenryu Hamanako Line Designated emergency evacuation site Major public facilities Municipal boundaries Main roads Railways Continuous inundation time (Light Blue) 0 to 12 hours Tenryu Line (Dark Blue) 12 to 24 hours Ichinomiya River Major Local Road Kakegawa-

(Yellow) 24 to 72 hours Major Local Road Yaizu-Mori Line Major Local Road Yaizu-Mori Line Fukuroi Line Morimachi Morimachi (Green) More than 72 hours Major Local Road Hamakita-

Major Local Road Yaizu-

Mori Line

Yamada

Tenryu Line

Major Local Road Iwata- Kayama Kakegawa City

Prefectural Highway Yamanashi- Kawae Shikiji Breakdown Line Ota River Haranoya River

Koyabu River Koyabu River

Prefectural Highway

Yokokawa-Iwata Line

Tomonaga

Fukuroi Police Department Mitsukawa Station

Ohya Prefectural Highway Kakegawa- Iwata City Ugari Yamanashi Line

Fukuroi Fire Department Yamanashi Station

Kamiyamanashi Kamiyamanashi

Fukuroi Police Department Yamanashi Koban Ugari River Tsukimicho Midori Haruoka

Okiyamanashi

Shikiji River

Major Local Road Fukuroi-

Nakazawa River

Yamanashi Line Haruno Line

Prefectural Highway Iwata-

Fukami

Muramatsu •This continuous inundation time map shows Kasuinomori

continuous inundation time expected for the Ota Shimoyamanashi Shimoyamanashi River, Haranoya River, Shikiji River, Ugari River, or Saka River when levees break or overflow due

to the estimated maximum rainfall in the Ota River Fukuroi City General Health Center Fukuroi City General Health Center Kuno Basin (629.5 mm in 24 Hours). Ota •This map represents inundation conditions caused

Okino River Okino Kunimoto by flooding from the target rivers in estimated Washizu Seirei Fukuroi City Hospital Seirei Fukuroi City Hospital rainfall conditions, and there is the possibility of Horikoshi inundation outside the scope shown here. Yamashina Yamashina Nobehisa Tomei Expressway

21 22 •This figure shows the length of time that water depth will be 50 cm or deeper. •Be careful in areas where it is assumed that flooding will continue for a long time, as you may get left behind.

Tenryu Hamanako Line

Tenryu Line Major Local Road Kakegawa-

Major Local Road Yaizu-Mori Line Morimachi

Major Local Road Yaizu-

Mori Line

Kakegawa City

Ota River Haranoya River

Koyabu River

Prefectural Highway Kakegawa- Ugari Yamanashi Line

Kamiyamanashi

Fukuroi Police Department Yamanashi Koban Ugari River Tsukimicho Haruoka

Major Local Road Fukuroi-

Haruno Line

Muramatsu Kasuinomori

Shimoyamanashi

Fukuroi City General Health Center Kuno

Okino River Okino Kunimoto Washizu Seirei Fukuroi City Hospital

Horikoshi Yamashina Tomei Expressway

22 7. Continuous inundation time map [Central Region]

Kasuinomori Fukami

Shimoyamanashi Muramatsu Muramatsu

Haranoya River Tenryu Hamanako Line

Fukuroi City General Health Center Koyabu River Ota

Shikiji River

Major Local Road

Major Local Road Hamakita- Kuno

Yamanashi Line

Seirei Fukuroi City Hospital Fukuroi Line Saka River

Iwata- Yamashina Washizu Tomei Expressway Tomei Expressway Kunimoto Kakegawa City Major Local Road Fukuroi- Nobehisa

Haruno Line

Okino River Okino River Horikoshi Tokumitsu National Route 1 (Bypass) Prefectural Highway Kakegawa-Fukuroi Line

Yokoi Ugari River Hirooka Fukuroi Fire Department Fukuroi Fire DepartmentFukuroi Fire Department Aoicho Fukuroi City Disaster Prevention Center Fukuroi City DisasterFukuroi Prevention City Disaster Center Prevention Center Izumicho

Asahicho Aino Higashi Legend Oyama Fukuroi Police Department Fukuroi Police Department Designated emergency Tamachi Aino Station Tsuchihashi Araya evacuation site Tenjincho Magomezawa River Major public facilities Eirakucho Fukuroi City Hall Fukuroi City Hall Ota River Municipal boundaries Aino Fukuroi Line Prefectural Highway Iwata- Hojo Main roads Kawai Fukuroi Railways Kiwara Fukuroi Police Station Fukuroi Police Station Chuo Koban Chuo Koban Continuous inundation time Sakaemachi Takaocho (Light Blue) 0 to 12 hours Mutsumicho (Dark Blue) 12 to 24 hours Mikadocho

Iwata City Yamanacho Fukuroi Station (Yellow) 24 to 72 hours Kanita River Daimon Daimon Hattazawagawa Nishhida Kaminaga (Green) More than 72 hours

Takao Uedacho Uedacho

Shimizucho Shimizucho Fukuroi Civil Engineering Office Fukuroi Civil EngineeringFukuroi OfficeCivil Engineering Office Ogawacho Ogasazawa River Estrada prefeitual Niike Aokicho Aokicho Toyosawa Fukuroi Ogasa sen JR Tokaido Main Line Sunamotocho

Hikojima

JR Tokaido Shinkansen

•This continuous inundation time map shows

Major Local Road Fukuroi- Moroi continuous inundation time expected for the Ota Osuka Line River, Haranoya River, Shikiji River, Ugari River, or Saka River when levees break or overflow due Asaba Asaba Matsubukuroi to the estimated maximum rainfall in the Ota River

-Kakegawa Line Basin (629.5 mm in 24 Hours). Prefectural Highway Iwata •This map represents inundation conditionsKakegawa caused City Asana Asana Okazaki

Prefectural Highway by flooding from the target rivers in estimated Nakano-Moroi Lime rainfall conditions, and there is the possibility of inundationYamazaki outside the scope shown here.

Asaoka Nagamizo

Umeyama Umeyama

23 24 •This figure shows the length of time that water depth will be 50 cm or deeper. •Be careful in areas where it is assumed that flooding will continue for a long time, as you may get left behind.

Muramatsu

Haranoya River Tenryu Hamanako Line

Saka River

Tomei Expressway Kunimoto Kakegawa City

Okino River

National Route 1 (Bypass) Prefectural Highway Kakegawa-Fukuroi Line

Hirooka Fukuroi Fire Department Fukuroi City Disaster Prevention Center

Aino Higashi Legend Fukuroi Police Department Aino Station Designated emergency evacuation site Magomezawa River Major public facilities Fukuroi City Hall Municipal boundaries Aino Main roads Railways Fukuroi Police Station Chuo Koban Continuous inundation time (Light Blue) 0 to 12 hours (Dark Blue) 12 to 24 hours (Yellow) 24 to 72 hours Daimon Hattazawagawa Kaminaga (Green) More than 72 hours Uedacho

Shimizucho Fukuroi Civil Engineering Office

Ogasazawa River Estrada prefeitual Aokicho Toyosawa Fukuroi Ogasa sen

•This continuous inundation time map shows continuous inundation time expected for the Ota River, Haranoya River, Shikiji River, Ugari River, or Saka River when levees break or overflow due Asaba to the estimated maximum rainfall in the Ota River

-Kakegawa Line Basin (629.5 mm in 24 Hours). Prefectural Highway Iwata •This map represents inundation conditionsKakegawa caused City Asana Okazaki by flooding from the target rivers in estimated rainfall conditions, and there is the possibility of inundationYamazaki outside the scope shown here.

Umeyama

24 7. Continuous inundation time map [Southern Region]

Takao

Toyosawa

Niike

Fukuroi Line Hikojima Prefectural Highway Iwata-

Moroi Ogasazawa River

Kanita River

Ota River Matsubukuroi •This continuous inundation time map shows continuous inundation time expected for the Ota River, Haranoya River, Shikiji River, Ugari River, Asaba Asaba or Saka River when levees break or overflow due -Kakegawa Line Prefectural Highway Iwata

JR Tokaido Main Line to the estimated maximum rainfall in the Ota River Haranoya River Asana Okazaki Basin (629.5 mm in 24 Hours). JR Tokaido Shinkansen •This map represents inundation conditions caused by flooding from the target rivers in estimated Asaoka Fukuroi Fire Department Asaba Station rainfall conditions, and there is the possibility of Nagamizo Umeyama Umeyama inundation outside the scope shown here.

Asaba Misawa River

Fukuroi Police Department Fukuroi Police DepartmentFukuroi Police Department Asaba Health Center Asaba Koban Asaba Koban Asaba Koban Naka Nagamizo

Yamazaki Fukuroi City Hall Asaba Branch Fukuroi City Hall Asaba Branch Fukuroi Police Department Kasahara Station Nibori

Toyozumi Toyozumi Major Local Road Iwata- Nishidouri-AsabaPrefectural Line Highway

Asabaisshiki

Fukude Line

Tomisato Prefectural Highway Nibori Nibori Major Local Road Nakano-Moroi Lime Fukuroi-Osuka Line

Hadsukoshi

Iwata City Nishigasaki Umeyama Kakegawa City Matsubara Matsubara

Major Local Road

Osukashin River Sagara-Osuka Line

Tarosuke National Route 150 Legend Designated emergency evacuation site Major public facilities Municipal boundaries Mae River Mae River Minato Nishidouri Ohno Main roads

Higashidouri Nakashinden Railways Continuous inundation time (Light Blue) 0 to 12 hours (Dark Blue) 12 to 24 hours (Yellow) 24 to 72 hours (Green) More than 72 hours

25 26 •This figure shows the length of time that water depth will be 50 cm or deeper. •Be careful in areas where it is assumed that flooding will continue for a long time, as you may get left behind.

Toyosawa

Ogasazawa River

•This continuous inundation time map shows continuous inundation time expected for the Ota River, Haranoya River, Shikiji River, Ugari River, Asaba or Saka River when levees break or overflow due -Kakegawa Line Prefectural Highway Iwata to the estimated maximum rainfall in the Ota River Asana Okazaki Basin (629.5 mm in 24 Hours). •This map represents inundation conditions caused by flooding from the target rivers in estimated

Fukuroi Fire Department Asaba Station rainfall conditions, and there is the possibility of Umeyama inundation outside the scope shown here.

Asaba Misawa River

Fukuroi Police Department Asaba Health Center Asaba Koban

Yamazaki Fukuroi City Hall Asaba Branch Fukuroi Police Department Kasahara Station Nibori

Toyozumi Nishidouri-AsabaPrefectural Line Highway

Nibori Fukuroi-OsukaMajor Local Line Road

Umeyama Kakegawa City Matsubara

Major Local Road

Osukashin River Sagara-Osuka Line

Legend Designated emergency evacuation site Major public facilities Municipal boundaries Mae River Nishidouri Ohno Main roads

Higashidouri Nakashinden Railways Continuous inundation time (Light Blue) 0 to 12 hours (Dark Blue) 12 to 24 hours (Yellow) 24 to 72 hours (Green) More than 72 hours

26 8. Water Level / Rainfall Measurement Point

RainfallRainfall andand riverriver levelslevels cancan bebe checkedchecked onon thethe InternetInternet usingusing aa YouYou cancan checkcheck rainfallrainfall andand riverriver waterwater levelslevels onon thethe ShizuokaShizuoka computercomputer oror aa smartphone.smartphone. PrefecturePrefecture “Sipos“Sipos Radar”Radar” Many rivers such as the Ota River, Shikiji River, Haranoya River that flow through Fukuroi City have large catchment Search areas outside of the city. Even if there isn’ t heavy rainfall inside the city, heavy rainfall in the mountains upstream can cause flooding and have an impact inside Fukuroi City, so beware of wide area rainfall and water level.

Water Level Station

Rainfall Station Okochi

Mikura Ota River Dam Tenryu Kuromata Yoshi River Click on the water level or Haranoya River Dam Hagima rainfall measurement point Youtan Bridge you are interested in to Shikiji check current or past Enden Amagata Takayama Awagatake measurements. Ichiba Bridge Kamiyashiki

Shikiji River Yoshioka Bridge

Kaneshiro Bridge Haranoya River Haranoya

Kasaume Bridge River Haranoya Yokote Bridge Hosoda At prefecture water level measurement stations, there are points with flood danger water levels or evacuation Kakegawa Okino River Kakegawa judgment water levels set to serve as a guideline for evacuation judgments. Yamana Beware of changes in water level and use them as a reference for evacuation.

Ugari River Saka River Fukuroi Evacuation Judgment Shingai River Basins Points Location Flood Danger

Water Level (cm) Water Level (cm) Ota River Ota Ota River Ota Ueda Bridge Mt. Ogasa Mitsuke Hikojima Bridge Ota River Amagata Mori, Morimachi, 280 240 (Upstream) (Prefecture) Shuchi County Kanitagawashita Ota River Shingai Shingai, 460 430 (Midstream) (Prefecture) Iwata City Nakajima Toyohama Ota River Toyohama Toyohama, Showa Flood Gate ーー Samejima Bridge (Downstream) (Prefecture) Iwata City Kasaume Bridge Kasaume, 584 540 Daito Shikiji River (Prefecture) Iwata City Fukude Yokote Bridge Kuno, 320 280 Ugari River (Prefecture) Fukuroi City Yamana Fukuroi, 700 650 Haranoya River (Prefecture) Fukuroi City Kaneshiro Bridge Kaneshiro, 490 450 Saka River (Prefecture) Kakegawa City Saka River Saida Hosoda, 610 520 (Prefecture) Kakegawa City Benzaiten River Showa Flood Gate Nakashinden, (Prefecture) Fukuroi City ーー

27 28 YouYou cancan checkcheck rainfallrainfall andand riverriver waterwater levelslevels onon thethe ShizuokaShizuoka PrefecturePrefecture “Sipos“Sipos Radar”Radar” Search

Click on the water level or rainfall measurement point you are interested in to check current or past measurements.

At prefecture water level measurement stations, there are points with flood danger water levels or evacuation judgment water levels set to serve as a guideline for evacuation judgments. Beware of changes in water level and use them as a reference for evacuation.

Evacuation Judgment River Basins Points Location Flood Danger Water Level (cm) Water Level (cm) Ota River Amagata Mori, Morimachi, 280 240 (Upstream) (Prefecture) Shuchi County Ota River Shingai Shingai, 460 430 (Midstream) (Prefecture) Iwata City Ota River Toyohama Toyohama, (Downstream) (Prefecture) Iwata City ーー Kasaume Bridge Kasaume, 584 540 Shikiji River (Prefecture) Iwata City Yokote Bridge Kuno, 320 280 Ugari River (Prefecture) Fukuroi City Yamana Fukuroi, 700 650 Haranoya River (Prefecture) Fukuroi City Kaneshiro Bridge Kaneshiro, 490 450 Saka River (Prefecture) Kakegawa City Saka River Saida Hosoda, 610 520 (Prefecture) Kakegawa City Benzaiten River Showa Flood Gate Nakashinden, (Prefecture) Fukuroi City ーー

28 8. Water Level & Rainfall Measurement Point 9. Strength and type of rain

In weather forecasts, the type of rain is expressed as “heavy rain” , “very heavy rain” or the like. YouYou cancan checkcheck sedimentsediment disasterdisaster informationinformation onon thethe “Shizuoka“Shizuoka Expressions for the strength of rain and guidelines for rainfall are categorized in the following table. Use this to PrefecturePrefecture GeographicGeographic InformationInformation System”System” . . become more familiar with disaster prevention weather information. Shizuoka Prefecture Geographic Information System Search Expressions for the strength of rain Rainfall guidelines Type of rainfall Image [Sediment Disaster Hazard Information] Sediment disaster hazard information is announced jointly by Shizuoka Prefecture and the JMA Shizuoka Local Rain falls in sheets, bouncing Meteorological Office as disaster prevention information on a municipality level that mayors can reference when 10 – 20 mm Somewhat strong rain off the ground so your feet get deciding to issue evacuation advisories and residents can reference to evacuate voluntarily when there is increased per hour danger of sediment disasters caused by heavy rain. Because sediment disasters are frequently triggered by rain, on wet. this website you can check danger levels on a 1 km2 grid, rainfall amount, sediment disaster hazard information announcements, and sediment disaster danger points, as supplementary information to sediment disaster hazard information. Rain pours, so you get wet 20 – 30 mm Strong rain even if you are holding an per hour umbrella.

Click this part to select the Sediment Disaster Information Map. 30 – 50 mm Buckets of rain fall, so that Heavy rain per hour roads become like rivers.

Rain comes down like a 50 – 80 mm Very heavy rain waterfall, so it is no use at all to per hour hold up an umbrella.

80 mm – More Rain falls so hard that it is Torrential rain per hour stifling, and even frightening.

Click the area you are interested in to see the general sediment disaster danger level for each 1 km2 area. How much is“50 mm of rain per hour”

There is danger of “50 mm of rain per hour” means rain on a scale extremely heavy rain, such that rain pools up without flowing with 50 mm or more falling per hour. anywhere else, “rain water pooling to a depth of 50 mm (= 5 cm) in 1 hour” . 5 cm may not sound like very much, but when this much rain falls over a wide area, it can exceed the capacity of rain drainage routes, such as rivers and water channels, and cause flooding. From the Flood Report 2010

Illustrations on this page are taken from the Japan Meteorological Agency leaflet “Rain and Wind” . 29 30 9. Strength and type of rain

In weather forecasts, the type of rain is expressed as “heavy rain” , “very heavy rain” or the like. Expressions for the strength of rain and guidelines for rainfall are categorized in the following table. Use this to become more familiar with disaster prevention weather information.

Expressions for the strength of rain Rainfall guidelines Type of rainfall Image

Rain falls in sheets, bouncing 10 – 20 mm Somewhat strong rain off the ground so your feet get per hour wet.

Rain pours, so you get wet 20 – 30 mm Strong rain even if you are holding an per hour umbrella.

30 – 50 mm Buckets of rain fall, so that Heavy rain per hour roads become like rivers.

Rain comes down like a 50 – 80 mm Very heavy rain waterfall, so it is no use at all to per hour hold up an umbrella.

80 mm – More Rain falls so hard that it is Torrential rain per hour stifling, and even frightening.

How much is“50 mm of rain per hour”

Illustrations on this page are taken from the Japan Meteorological Agency leaflet “Rain and Wind” . 30 10. Topography and Disaster Characteristics of Fukuroi City Pictures of past inundation events in Fukuroi City

Fukuroi City borders Kakegawa City to the east, Iwata City to the west, Mori Town, Shuchi County to the north, and the Sea of Enshu (Pacific Ocean) to the south. The topography is flat on the whole, including many alluvial plains that have developed along the Haranoya River that flows from east to west across the center of the city and the Ota River that flows from north to south through the west side of the city. As a result, the area is susceptible to wind storms caused by typhoons, heavy rains caused by low pressure fronts, and strong seasonal winds in winter. Jul 1974 flooding (Tanabata heavy Jul 1974 flooding (Tanabata heavy rain) Jul 1976 flooding The northern central part of Fukuroi City is in the Ota River Basin, and the southern part closer to the sea is in the rain) Imai District Benzaiten River Basin. The water level of rivers that flow through Fukuroi City is greatly affected by rainfall upstream, outside of the city on the Ota River, Haranoya River, and Shikiji River.

Fukuroi City has many low lying areas, so there is danger of massive inundation caused by river levees breaking and danger of inundation because it is impossible to drain water.

Sep 1991 flooding Fukuroi Sep 1998 flooding Nov 2004 flooding Fukuroi Higashi District Higashi District Mori Town

Legend Haranoya River Municipal boundary Ota River Main rivers River basin boundary Pictures of past inundation events in other prefectures

Kakegawa City Elevation

Iwata City Fukuroi City

Aug 2014 (Hiroshima City heavy rain Aug 2014 (Hiroshima City heavy rain Sep 2015 (Kanto & Tohoku heavy Bezaiten River and sediment disaster) and sediment disaster) rain) Midorii, Asaminami Ward, Hiroshima Kabe Town, Asakita Ward, Hiroshima Misaka Town, Joso City, Ibaraki City, Hiroshima Prefecture City, Hiroshima Prefecture Prefecture

2 Features of Area: 108.33 km Fukuroi City Population: 88,234 (As of January 1st, 2019) Households: 34,370 Jul 2017 (Northern Kitakyushu heavy Oct 2017 (Typhoon No. 21) Oct 2017 (Typhoon No. 21) rain) Kinokawa City, Wakayama Kinokawa City, Wakayama Asakura City, Fukuoka Prefecture) Prefecture Prefecture (From the MLIT Flood Report 2014 – 2018)

31 32 Pictures of past inundation events in Fukuroi City

Jul 1974 flooding (Tanabata heavy Jul 1974 flooding (Tanabata heavy rain) Jul 1976 flooding rain) Imai District

Sep 1991 flooding Fukuroi Sep 1998 flooding Nov 2004 flooding Fukuroi Higashi District Higashi District

Pictures of past inundation events in other prefectures

Aug 2014 (Hiroshima City heavy rain Aug 2014 (Hiroshima City heavy rain Sep 2015 (Kanto & Tohoku heavy and sediment disaster) and sediment disaster) rain) Midorii, Asaminami Ward, Hiroshima Kabe Town, Asakita Ward, Hiroshima Misaka Town, Joso City, Ibaraki City, Hiroshima Prefecture City, Hiroshima Prefecture Prefecture

Jul 2017 (Northern Kitakyushu heavy Oct 2017 (Typhoon No. 21) Oct 2017 (Typhoon No. 21) rain) Kinokawa City, Wakayama Kinokawa City, Wakayama Asakura City, Fukuoka Prefecture) Prefecture Prefecture (From the MLIT Flood Report 2014 – 2018)

32 March 2019

For inquiries about the Fukuroi City Flood Hazard Map

Regarding inundation estimates Fukuroi City Urban Construction Department, Construction Division

1-1 Araya 1-chome, Fukuroi-shi TEL: 0538-44-3166 (Flood Countermeasures Office) / 0538-44-3130 (Administration)

Regarding evacuation Fukuroi City Crisis Management Department, Crisis Management Division 2907 Kunimoto, Fukuroi-shi TEL: 0538-86-3701