2011 Thailand floods
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Severe flooding occurred during the 2011
monsoon A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal oscil ...
season in
Thailand Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is b ...
. The flooding began at the end of July triggered by the landfall of Tropical Storm Nock-ten. These floods soon spread through the provinces of northern, northeastern, and central Thailand along the Mekong and Chao Phraya river basins. In October floodwaters reached the mouth of the Chao Phraya and inundated parts of the capital city of
Bangkok Bangkok, officially known in Thai as Krung Thep Maha Nakhon and colloquially as Krung Thep, is the capital and most populous city of Thailand. The city occupies in the Chao Phraya River delta in central Thailand and has an estimated populati ...
. Flooding persisted in some areas until mid-January 2012, and resulted in a total of 815 deaths (with three missing) and 13.6 million people affected. Sixty-five of Thailand's 76
provinces A province is almost always an administrative division within a country or state. The term derives from the ancient Roman '' provincia'', which was the major territorial and administrative unit of the Roman Empire's territorial possessions ou ...
were declared flood disaster zones, and over of farmland was damaged. The disaster has been described as "the worst flooding yet in terms of...water and people affected." The
World Bank The World Bank is an international financial institution that provides loans and grants to the governments of low- and middle-income countries for the purpose of pursuing capital projects. The World Bank is the collective name for the Inte ...
has estimated 1,425 trillion baht (US$46.5 billion) in economic damages and losses due to flooding, as of 1 December 2011. Most of this was due to the manufacturing industry, as seven major industrial estates were inundated in water as much as 3 meters (10 feet) deep during the floods. Disruptions to manufacturing supply chains affected regional automobile production and caused a global shortage of hard disk drives which lasted throughout 2012. The World Bank's estimate for this disaster means it ranks as the world's fourth costliest disaster as of 2011 surpassed only by the
2011 Tōhoku earthquake and tsunami The occurred at 14:46 Japan Standard Time, JST (05:46 UTC) on 11 March. The Moment magnitude scale, magnitude 9.0–9.1 (M) Submarine earthquake, undersea megathrust earthquake had an epicenter in the Pacific Ocean, east of the Oshika Peni ...
in
Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the n ...
,
Great Hanshin earthquake The , or Kobe earthquake, occurred on January 17, 1995, at 05:46:53 JST (January 16 at 20:46:53 UTC) in the southern part of Hyōgo Prefecture, Japan, including the region known as Hanshin. It measured 6.9 on the moment magnitude scale and ha ...
in 1995, and
Hurricane Katrina Hurricane Katrina was a destructive Category 5 Atlantic hurricane that caused over 1,800 fatalities and $125 billion in damage in late August 2005, especially in the city of New Orleans and the surrounding areas. It was at the time the cost ...
in 2005. A 2015 study suggests increasing odds for potential flooding similar to the 2011 flood intensity to occur in the future. Thailand's southern provinces also saw seasonal flash-flooding towards the end of the year, although these were not as destructive as the floods in the more northerly provinces.


Background

Various regions of
Thailand Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is b ...
are prone to seasonal flash-flooding due to their
tropical climate Tropical climate is the first of the five major climate groups in the Köppen climate classification identified with the letter A. Tropical climates are defined by a monthly average temperature of 18 °C (64.4 °F) or higher in the cool ...
. The floods often occur in the
north North is one of the four compass points or cardinal directions. It is the opposite of south and is perpendicular to east and west. ''North'' is a noun, adjective, or adverb indicating direction or geography. Etymology The word ''north ...
and spread down the
Chao Phraya River The Chao Phraya ( or ; th, แม่น้ำเจ้าพระยา, , or ) is the major river in Thailand, with its low alluvial plain forming the centre of the country. It flows through Bangkok and then into the Gulf of Thailand. ...
through the
central Central is an adjective usually referring to being in the center of some place or (mathematical) object. Central may also refer to: Directions and generalised locations * Central Africa, a region in the centre of Africa continent, also known a ...
plains, in the
northeast The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each sep ...
along the Chi and Mun Rivers flowing into the
Mekong The Mekong or Mekong River is a trans-boundary river in East Asia and Southeast Asia. It is the world's twelfth longest river and the third longest in Asia. Its estimated length is , and it drains an area of , discharging of water annual ...
, or in the coastal hillsides of the
east East or Orient is one of the four cardinal directions or points of the compass. It is the opposite direction from west and is the direction from which the Sun rises on the Earth. Etymology As in other languages, the word is formed from the fac ...
and
south South is one of the cardinal directions or compass points. The direction is the opposite of north and is perpendicular to both east and west. Etymology The word ''south'' comes from Old English ''sūþ'', from earlier Proto-Germanic ''*sunþa ...
. Remnants of tropical storms that strike
Vietnam Vietnam or Viet Nam ( vi, Việt Nam, ), officially the Socialist Republic of Vietnam,., group="n" is a country in Southeast Asia, at the eastern edge of mainland Southeast Asia, with an area of and population of 96 million, making ...
or the peninsular south commonly increase precipitation, resulting in further risk of flooding. Drainage control systems, including several dams, irrigation canals and flood detention basins, have been constructed, but are inadequate to prevent flood damage, especially in rural areas. Much effort, including a system of drainage tunnels begun in 2001, has been put into preventing the inundation of the capital city, which lies near the mouth of the Chao Phraya and is prone to flooding, with considerable success. Bangkok has seen only brief and minor flooding since the major flood of 1995. Other regions, however, had experienced severe flooding as recently as
2010 File:2010 Events Collage New.png, From top left, clockwise: The 2010 Chile earthquake was one of the strongest recorded in history; The Eruption of Eyjafjallajökull in Iceland disrupts air travel in Europe; A scene from the opening ceremony of ...
. Rainfall in March 2011 over the area of
northern Thailand Northern Thailand, or more specifically Lanna, is geographically characterised by several mountain ranges, which continue from the Shan Hills in bordering Myanmar to Laos, and the river valleys which cut through them. Though like most of Thail ...
was an extraordinary 344 percent above the
mean There are several kinds of mean in mathematics, especially in statistics. Each mean serves to summarize a given group of data, often to better understand the overall value ( magnitude and sign) of a given data set. For a data set, the '' ar ...
. Bhumibol Dam in particular received 242.8 mm of rain, well above the normal 25.2 mm. Since 1 January the dam had accumulated 245.9 mm, 216.0 mm or 186 percent above normal. Bangkok's tendency to flood is particularly acute. Bangkok and adjacent provinces are only 50 cm to two meters above sea level. Sea levels are rising four mm every year. The rising sea levels push more water into the Chao Phraya River. To combat rising sea levels a barrier dam stretching from Chonburi to Hua Hin has been proposed, at a cost of 500 billion
baht The baht (; th, บาท, ; sign: ฿; code: THB) is the official currency of Thailand. It is divided into 100 ''satang'' (, ). The issuance of currency is the responsibility of the Bank of Thailand. SWIFT ranked the Thai baht as the 10th-m ...
. The three-meter high dykes that sequester the river are subsiding, as is the rest of the city. In the past, some areas of Bangkok were sinking as much as three centimeters per year, due to excessive groundwater extraction. Groundwater extraction was halted in 1977. That step has slowed subsidence to about one centimeter per year on average. However, the sheer weight of Bangkok's ever expanding infrastructure has exacerbated the problem. Bangkok has some 700 buildings more than 20 storeys high and 4,000 buildings eight to 20 storeys high. The sheer weight of these structures displaces the spongy soil and increases subsidence. In a 2015 report, Thailand's National Reform Council warned that relocation of the capital was not out of the question.


Flooding timeline

With the monsoon season well underway in 2011, when noticeable rainfall started in May, major flooding began as Tropical Storm Nock-ten made its landfall in northern Vietnam, causing heavy precipitation in northern and northeastern Thailand and flash floods in many provinces from 31 July. Within one week thirteen persons had been reported dead, with ongoing flooding in the provinces of Chiang Mai, Lampang, Lamphun, Mae Hong Son, Nan, Phrae, and Uttaradit in the north, and Bung Kan, Nakhon Phanom, Nong Khai, Sakon Nakhon, and Udon Thani in the upper northeast. The upper-central provinces of Phichit, Phitsanulok, and Sukhothai were also flooded as the flooding spread down the overflowing Yom and
Nan Nan or NAN may refer to: Places China * Nan County, Yiyang, Hunan, China * Nan Commandery, historical commandery in Hubei, China Thailand * Nan Province ** Nan, Thailand, the administrative capital of Nan Province * Nan River People Given name ...
Rivers. Prachuap Khiri Khan on the gulf coast was also affected. Flooding was still ongoing by late-August, as heavy rains were expected to continue for longer than usual due to the effect of a multi-year La Niña event. Flood waters reached a depth of 50 cm in downtown
Nan Nan or NAN may refer to: Places China * Nan County, Yiyang, Hunan, China * Nan Commandery, historical commandery in Hubei, China Thailand * Nan Province ** Nan, Thailand, the administrative capital of Nan Province * Nan River People Given name ...
, and became the highest recorded in 16 years in Phitsanulok Province, while large areas in the downstream provinces of Nakhon Sawan, Ang Thong, Ayutthaya, and Nakhon Nayok were affected and the death toll rose to 37 by 22 August. Both Bhumibol and
Sirikit Queen Sirikit ( th, สิริกิติ์; ; ); born '' Mom Rajawongse'' Sirikit Kitiyakara ( th, สิริกิติ์ กิติยากร; ; 12 August 1932) is the queen mother of Thailand. She was Queen of Thailand as the wi ...
Dams increased discharge rates to compensate for the increase in incoming flow. By 19 September almost all of the lower central provinces were affected by the flood: Uthai Thani, Chai Nat, Sing Buri, Ang Thong, Suphan Buri, Ayutthaya, Pathum Thani, and Nonthaburi, the latter two on the northern border of Bangkok. Broken floodgates resulted in water from the Chao Phraya flowing through irrigation canals and inundating large areas of paddy fields in Singburi, Ang Thong, and Ayutthaya, but lessened the strain on Bangkok as the fields served as water retention areas. Power boats were used to run against the river's flow while at anchor in an attempt to increase the river's discharge rate. By the beginning of October, most dams were already near or over capacity and were being forced to increase their rate of discharge, potentially worsening downstream flooding. Flooding in Ayutthaya worsened and flood water entered the city itself, inundating the
Ayutthaya Historical Park Ayutthaya Historical Park ( th, อุทยานประวัติศาสตร์พระนครศรีอยุธยาPronunciation) covers the ruins of the old city of Ayutthaya, Phra Nakhon Si Ayutthaya Province, Thailand. Th ...
and forcing evacuations. Barriers protecting industrial estates failed, resulting in the flooding of dozens of major factories and a country-wide disruption of the manufacturing supply chains. In
Nakhon Sawan Nakhon Sawan ( th, นครสวรรค์, ) is a city (''thesaban nakhon'') in Thailand, the name literally means "Heavenly City". The city is the capital of Nakhon Sawan Province, and covers the complete subdistrict (''tambon'') Pak Nam P ...
, the sandbag barrier protecting the city was breached, resulting in rapid flooding of the city. Hundreds of patients had to be transferred out of Ayutthaya and Nakhon Sawan Regional Hospitals by boat as water levels rose over the hospital floors and power supplies and life support systems were disrupted.


Northeast

The
Mekong The Mekong or Mekong River is a trans-boundary river in East Asia and Southeast Asia. It is the world's twelfth longest river and the third longest in Asia. Its estimated length is , and it drains an area of , discharging of water annual ...
, and its major
tributaries A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drain ...
Mae Mun and Mae Chi all experienced flooding. In Khon Kaen Province alone, floods destroyed close to 350,000
rai RAI – Radiotelevisione italiana (; commercially styled as Rai since 2000; known until 1954 as Radio Audizioni Italiane) is the national public broadcasting company of Italy, owned by the Ministry of Economy and Finance. RAI operates many ter ...
(56,000 hectares; over 200 square miles) of land, stranding 315 families of Mai Si Wilai village in the middle of the swollen Nong Kong Kaew Lake in Chonnabot District, while in Phra Lap municipality on the outskirts of
Khon Kaen Khon Kaen ( th, ขอนแก่น, ) is one of the four major cities of Isan, Thailand, also known as the "big four of Isan", the others being Udon Thani, Nakhon Ratchasima, and Ubon Ratchathani. It is the capital of Khon Kaen province and ...
city, over 700 displaced residents of Phra Kheu village called the shoulder of a provincial highway home. The provincial Department of Disaster Prevention and Mitigation, normally allocated 50 million
Thai baht The baht (; th, บาท, ; sign: ฿; code: THB) is the official currency of Thailand. It is divided into 100 ''satang'' (, ). The issuance of currency is the responsibility of the Bank of Thailand. SWIFT ranked the Thai baht as the 10th-mos ...
, was granted an extra 50 million for 2011 and had spent over 80 million by the end of October 2011.


South

Significant flooding occurred in late-2011 in Thailand's southern provinces. Nine provinces were affected by flash flooding owing to rains that occurred in November 2011. Saba Yoi, Khuan Niang, Rattaphum, and Singha Nakhon Districts were declared disaster zones after flood waters as deep as five meters covered nearly all areas. More than 159 small and key roads were impassable. Ten other districts were feared at risk of inundation and more rains were expected. Coastal areas in the south were also battered by high waves.


Flooding in and around Bangkok

As floodwaters drained southwards from Ayutthaya, Bangkok was becoming seriously threatened by mid-October. In Pathum Thani Province bordering Bangkok to the north, continuous efforts to reinforce and repair sandbag
flood wall A flood wall (or floodwall) is a primarily vertical artificial barrier designed to temporarily contain the waters of a river or other waterway which may rise to unusual levels during seasonal or extreme weather events. Flood walls are mainly u ...
s were undertaken to prevent the Chao Phraya and Rangsit Canals from overflowing into Bangkok. Several districts in eastern Bangkok which lie outside Bangkok's flood wall, as well as parts of the surrounding Nonthaburi, Pathum Thani, Chachoengsao, and Nakhon Pathom Provinces, became flooded as water was diverted from the Chao Phraya to the Nakhon Nayok River and outlying canals. As flood barriers in Pathum Thani failed, even more industrial estates as well as suburban residential areas became flooded. Parts of the Phahonyothin Highway leading out of Bangkok became inaccessible, causing severe traffic jams on alternative routes. Disruption of a barrier protecting the Khlong Prapa water supply canal early on 20 October allowed floodwaters to enter the canal and rapidly flow down to
Sam Sen 350px, Samsen Road in the phase of Thewet Naruemit Bridge (view backward to Phra Nakhon side) Samsen or spelled Sam Sen ( th, สามเสน, ) is a road and neighbourhood in Bangkok considered to be one of Bangkok's oldest. Samsen road start ...
in central Bangkok, overflowing and flooding several areas along the banks. Although the breach was controlled, residents panicked and illegally parked cars on flyovers and parts of the elevated expressway. The entire Rangsit campus of
Thammasat University Thammasat University ( Abrv: TU th, มธ.; th, มหาวิทยาลัยธรรมศาสตร์, , ) is a public research university in Thailand with campuses in Tha Phra Chan area of Phra Nakhon District near the Grand Pala ...
in
Pathum Thani Pathum Thani ( th, ปทุมธานี, ) is a town (''thesaban mueang'') in central Thailand, directly north of Bangkok. It is the capital of the Pathum Thani province, Thailand as well as the Mueang Pathum Thani district. As of 2005, it ...
, north of Bangkok, serving as the largest evacuation centre, was flooded with two meters of water. This led to the school's final exams to be postponed three times. As the situation continued, several floodgates controlling the Rangsit/Raphiphat canal system became overwhelmed and were forced to release water towards more residential areas. Residents of several districts of Bangkok, especially those bordering Pathum Thani, were told to prepare for flooding. 15 October, saw the beginning of what would be the total inundation of Muang Ake and Rangsit University. The Rangsit gymnasium served as the main means of exit from the town for those who did not have ability to leave on boat or four-wheel drive. An army truck transferred many to the Mo Chit bus station. The
Chao Phraya River The Chao Phraya ( or ; th, แม่น้ำเจ้าพระยา, , or ) is the major river in Thailand, with its low alluvial plain forming the centre of the country. It flows through Bangkok and then into the Gulf of Thailand. ...
watershed Watershed is a hydrological term, which has been adopted in other fields in a more or less figurative sense. It may refer to: Hydrology * Drainage divide, the line that separates neighbouring drainage basins * Drainage basin, called a "watershe ...
drains an area of . This entire area drains towards
Bangkok Bangkok, officially known in Thai as Krung Thep Maha Nakhon and colloquially as Krung Thep, is the capital and most populous city of Thailand. The city occupies in the Chao Phraya River delta in central Thailand and has an estimated populati ...
and eventually empties into the sea. The Chao Phraya River itself, and pumping stations around Bangkok drain approximately per day. However, the releases from the dams upstream of Bangkok coupled with additional rainfall, led to estimates that of flood waters must be drained. The flow headed towards Bangkok equated to . Thailand's Royal Irrigation Department predicted, provided there is no new rain, that it would take 30–45 days for this quantity of water to reach the sea. Until water flows out to sea, it must go somewhere. This meant flooding on unprotected low-lying land. The amount of land inundated, and the height of peak flood waters was difficult to project for three reasons: *The exact amount of flood water flowing towards Bangkok was an estimate. *Flood waters flowing into the Bangkok area didn't arrive all at the same time. *The expanse of land area that flood waters can occupy before reaching the sea is variable depending on how well barriers hold.


Timeline of protecting downtown Bangkok

*6 November 2011 – Khomsan Maleesee, of the KMITL's Faculty of Engineering, stated, "The promise that the 20 districts in Bangkok that remain dry would not flood was now hardly credible." Other experts disagreed. On 1 November 2011 flooding in downtown Bangkok was seen as "unlikely" according to Dr Anond Snidvongs. *8 November 2011 – Todd Pitman, writing for the
Associated Press The Associated Press (AP) is an American non-profit news agency headquartered in New York City. Founded in 1846, it operates as a cooperative, unincorporated association. It produces news reports that are distributed to its members, U.S. new ...
reported: "Top officials and experts have given varying estimates of how much Bangkok would flood and how long the threat would loom over the city." *9 November 2011 – Flooding still had not reached downtown Bangkok, however, yet another dire prediction was made. This one was by Graham Catterwell in ''
The Nation ''The Nation'' is an American liberal biweekly magazine that covers political and cultural news, opinion, and analysis. It was founded on July 6, 1865, as a successor to William Lloyd Garrison's '' The Liberator'', an abolitionist newspaper t ...
''. While he conceded that it is hard to get a clear picture and he hopes flooding will not occur, that a citywide deluge is inevitable. *According to Catterwell's prediction made 9 November 2011. "Parts of central eastern Bangkok—notably (in sequence)
Bang Kapi Bang Kapi ( th, บางกะปิ, ) is one of the 50 districts (''khet'') of Bangkok, Thailand. It is bounded by other Bangkok districts (from north clockwise): Bueng Kum, Saphan Sung, Prawet, Suan Luang, Huai Khwang, Wang Thonglang, and ...
, Ramkhamhaeng Road, Srinakharin Road, and Phetburi Road—look sure to be under water by early next week. After Phetburi Road goes under, it will not take long for these waters to flow to Sukhumvit and the rest of downtown Bangkok." *Also on 9 November 2011 Flood Relief Operations Command (FROC) director, Justice Minister Pracha Promnok, stated, "water was moving underground through the city's sewers" and he could not say if the heart of the capital and Rama 2 Road would be inundated. Rama 2 Road as of 9 November 2011 was the last remaining route open to southern Thailand and vital to supply cities with goods made in the Bangkok area. *10 November 2011 – Public official Chavalit Chatararatt, in a live televised analysis, predicted that Bangkok would be dry by 20 November 2011 provided all conditions were right. *10 November 2011 – The Thai Irrigation Department reported Bangkok flood waters could be drained in 11 days. Spokesman Mr Boonsanong dismissed reports the city could be hit by more water from the north. Floodwater was described as being from Rama 2 Road and the situation "hard to predict". *12 November 2011 – Prime Minister Yingluck said that overall the situation in Bangkok was improving. However, "she declined to say how far the flood water would stray into inner Bangkok and whether the Bangchan Industrial Estate will be safe." This question required more evaluation and that effectiveness of flood control efforts was not a certainty. Drainage in western Bangkok required improvement and the coming high
tides Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon (and to a much lesser extent, the Sun) and are also caused by the Earth and Moon orbiting one another. Tide tables c ...
of mid-November were still a concern. *14 November 2011 – In apparent direct defiance of Prime Minister Yingluck, in Don Mueang District about 200 residents removed sand bags from a barrier that was described as one of the last lines of defense preventing water from flowing into Bangkok's upper districts. *14 and 18 November 2011 – More areas of big bag walls protecting unflooded areas of Bangkok were torn down by up to 2,000 residents tired of high flood waters in their area. Jate Sopitpongstorn, advisor to Bangkok's governor, said "It's a big concern because there is such a large amount of water yet to come in." *22 November 2011 – Siri Suparathit of the Rangsit University Center on Climate Change and Disaster reported steadily decreasing levels of flood waters in most areas around Bangkok and that even if the big bag wall was breached there "will be no problem". However, an estimated 20 million cubic meters of water per day still overflowed the Chao Phraya River and kept some areas north of downtown Bangkok flooded into December 2011. *27 November 2011 – Many neighborhoods in outer Bangkok remained inundated. Residents in flooded areas were coping with stagnant waters that had become breeding grounds for swarms of insects. *28 November 2011 – Downtown Bangkok appeared to have been successfully defended from inundation and flood waters in most areas were draining. Residents in areas that remained flooded grew impatient. Sandbag walls were sabotaged and sluice gate levels changed. Residents in some areas were said to be "poised to revolt".


Mitigation and relief efforts

Centralized flood monitoring and relief operations began in mid-August. Prime Minister
Yingluck Shinawatra Yingluck Shinawatra ( th, ยิ่งลักษณ์ ชินวัตร, , ; ; born 21 June 1967), nicknamed Pou ( th, ปู, , , meaning "crab"), is a Thai businesswoman, politician and a member of the Pheu Thai Party who became the Pri ...
, appointed in early-August, made tours of flooded provinces beginning 12 August and assigned cabinet members and members of parliament to visit affected people, pledging support to local administration organizations. The 24/7 Emergency Operation Center for Flood, Storm and Landslide was set up on 20 August under the Disaster Prevention and Mitigation Department of the Ministry of Interior to coordinate warning and relief efforts. The government also allocated extra flood-relief budgets to the affected provinces. The prime minister also pledged to invest in long-term prevention projects, including the construction of drainage canals. The armed forces were mobilized to distribute aid to affected people, and civilian groups and organizations were also involved, with volunteers packing sustenance kits and delivering aid to some areas. A Flood Relief Operations Center (FROC) was set up at
Don Mueang Airport Don Mueang International Airport ( th, ท่าอากาศยานดอนเมือง, , , or colloquially as , ) is one of two international airports serving the Bangkok Metropolitan Region, the other one being Suvarnabhumi Airpo ...
to coordinate the delivery of aid, superseding the Emergency Operation Center because it could not exercise adequate authority. The stadium at Rangsit Campus of Thammasat University served as a shelter for evacuees, mostly from Ayutthaya. However, many people in the flooded areas refused to leave their homes for fear of looting. China, Japan, the
Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...
, the United States, and New Zealand pledged support and assistance for relief operations. On 16 October 2011, the aircraft carrier, as well as several other United States Navy ships were deployed to Thailand to assist in
relief work Humanitarian aid is material and logistic assistance to people who need help. It is usually short-term help until the long-term help by the government and other institutions replaces it. Among the people in need are the homeless, refugees, and v ...
. It was not clear to the US government whether or not the Thai government required US naval assistance due to mixed signals from the Thai government. An anonymous US defense official said that they were "ready to help but we haven't got a request". Then Captain John Kirby of the USS ''Mustin'', docked at Port
Laem Chabang Laem Chabang ( th, แหลมฉบัง, ) is a port city municipality (''thesaban nakhon'') in Si Racha and Bang Lamung districts of Chonburi Province, Thailand. It includes Thung Sukhla subdistrict (''tambon'') and parts of subdistricts Bu ...
on a routine visit, said Thailand asked the warship to prolong its stay at the port for up to six days for assistance in aerial surveillance of the extent the flooding. The Pentagon said two Seahawk helicopters aboard would conduct the reconnaissance.


Disputes

At the national level a debate raged as to whether the dams that store waters upstream of Bangkok were mismanaged. The size and scope of the 2011 flood can, in part, be attributed to the low rainfall of the 2010 monsoon season. Dam levels hit record lows in June 2010. The evidence shows that early in the season the dams collected large amounts of water building reserves and buffering early flooding. The scale of the rainfall of 2011 is evidenced by the quantity of water collected behind Bhumibol Dam. Over eight billion cubic meters of water were collected in three months, filling this dam to capacity. Once at capacity, continuing rains forced officials to increase flows from the dams despite increasing flooding and this led to accusations that the dams were mismanaged early in the monsoon season. However, the counter argument is that had the monsoon season for 2011 been short and the dam levels not built up, that even lower levels than 2010 would have been mismanagement too. As the flooding threat to Bangkok increased, discontent with the government response and the FROC mounted. The government was criticized for underestimating the extent of flooding, giving mixed or conflicting information, and not giving adequate warnings. Failure of governmental units to share data and cooperate were reported as contributing to the problem. FROC administrators and the Bangkok Metropolitan Administration (BMA) were criticized for playing politics and refusing to cooperate at the expense of the general population. Copying the technique suggested by King
Bhumibol Adulyadej Bhumibol Adulyadej ( th, ภูมิพลอดุลยเดช; ; ; ( Sanskrit: ''bhūmi·bala atulya·teja'' - "might of the land, unparalleled brilliance"); 5 December 192713 October 2016), conferred with the title King Bhumibol the Grea ...
to help quicken the flow of water through the much shallower Khlong Lad Pho canal, Yingluck placed hundreds of boats in the Chao Phraya River to accelerate the flow and drainage of the basin. Yingluck was criticized for this by Democrat Party spokesman Chavanond Intarakomalyasut, who called the operation a "waste of time" as there were high sea tide at the time. Smith Dharmasarojana, former Director-General of the Meteorological Department and Chairman of the National Disaster Warning Council Foundation, also criticized the operation, claiming that "accelerating boats in the middle of the wide Chao Phraya River is a waste because they propel only the water on the surface." However, others countered that boats wouldn't move forward unless they propelled water backwards. The middle ground to this dispute is that the overall power of the Chao Phraya River is tremendous compared to the additional power added to it by the engines of the boats. Later on 5 December 2011, the king was present at a public ceremony held on his 84th birthday anniversary, attended by senior public officers and broadcast live throughout the nation. He gave a public speech a part of which was: "...Especially, the people are now suffering from the inundation. Every person is obliged to together and without delay cope with this public danger. And all projects I have suggested, such as the project on permanent management of water, are merely an advice, not an order. The persons concerned must think twice bout them.." Sukhumbhand Paribatra, a member of the opposition party and Democrat Governor of Bangkok, apparently seized on the flood as an opportunity to
grandstand A grandstand is a normally permanent structure for seating spectators. This includes both auto racing and horse racing. The grandstand is in essence like a single section of a stadium, but differs from a stadium in that it does not wrap al ...
and made comments such as "please believe me and only me", and charged that 800,000 sandbags provided by the federal government were of questionable construction. "Once I saw these paper bags I was in shock", he said, refusing the sandbags. In response, the government released photos of the bags, construction details, and suggested that the governor was perhaps ill-advised by a third party in an attempt to allow him to save some face. The use of flood barriers resulted in several disputes between people on the different sides. Those on the flooded side were angry that they were unfairly affected, and often attempted to sabotage the barriers, sometimes resulting in armed confrontation. Farmers in Phichit Province, among others, fought over the maintenance of sandbag barriers and sluice gates. Residents in areas outlying Bangkok are also dissatisfied that their homes are flooded while Bangkok was protected. Arguments over the construction of the controversial Kaeng Suea Ten Dam also arose. Local resistance to the building and maintenance of flood barriers disrupted work in several instances. Residents in some areas sabotaged barriers and threatened government workers at gunpoint.


Issues with car owners

Once the flood arrived at Pathum Thani Province, the media presented flood-related news more frequently and made car owners in Bangkok and nearby precincts panic. Many designated car parks were full at that time. Many parked their vehicles on expressways, at intersections, or anywhere they perceived would not get flooded. This aggravated traffic problems and there were several unreported accidents. No deaths were reported.


Communication deficiencies

One notable error in communications between Thai media and foreign companies was the lack of information in English. Japan's Toshiba said, "it is critical for the government to provide more accurate flood information and implement long-term prevention measures". Other foreign investors shared this anxiety. Another notable example of insufficient communication was with Rohm Integrated Systems, one of the largest Japanese semiconductor manufacturers who had a manufacturing plant in Navanakorn. The company received very little information about the flood and could not move critical equipment in time.


Damage

The flooding has been described as "the worst flooding yet in terms of the amount of water and people affected". As of 6 November, flooding affected 3,151,224 people from 1,154,576 families, with 506 deaths and two missing persons reported by the 24/7 Emergency Operation Center for Flood, Storm and Landslide (EOC). Damage estimates of at least 185 billion baht in the latest estimate by the Federation of Thai Industry (central region) which includes 95 billion baht damage on Thai industry, 25 billion baht damage to Thai agriculture, and 65 billion baht damage to housing. A large part of the damage stemmed from the effect on the manufacturing industry, with 930 factories in 28 provinces affected, including several industrial estates in Ayutthaya and
Pathum Thani Pathum Thani ( th, ปทุมธานี, ) is a town (''thesaban mueang'') in central Thailand, directly north of Bangkok. It is the capital of the Pathum Thani province, Thailand as well as the Mueang Pathum Thani district. As of 2005, it ...
Provinces. The flooding has been estimated to result in a decrease of 0.6–0.9 percent in economic growth. Schools, 1,053 of which were affected as of 19 September, were forced to end the term early. Employment was hurt when factories flooded and workers were laid off or fired. Not all factories were expected to reopen, causing significant long-term job loss in central Thailand. Thailand accounts for about 30 percent of global trade in rice and 25 percent of the main crop was not expected to survive the floods. On the other side of the world, rice farmers in Arkansas, usually accounting for 42 percent of US output, also were flooded early that year, and then faced drought, reducing their crop by 32 percent according to the USDA. Combined, these two events will have a global impact on rice prices. In Thailand, where rice farmers do not typically have much reserve capital, effects on farmers will be felt the greatest since they lost both their investment in the current crop and must wait to earn money when flood waters recede before planting a new one.


Damages to industrial estates and global supply shortages

On 8 October 2011 the 10-metre high water barrier in Nikom Rojna Industrial Estate, which housed many manufacturing plants, collapsed. The strong current interfered with reconstruction efforts and resulted in the area being non-operational. One of the major manufacturing plants, Honda, was left virtually inaccessible. Thailand is the world's second-largest producer of
hard disk drive A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with mag ...
s, supplying approximately 25 percent of the world's production. Many of the factories that made hard disk drives were flooded, including
Western Digital Western Digital Corporation (WDC, commonly known as Western Digital or WD) is an American computer drive manufacturer and data storage company, headquartered in San Jose, California. It designs, manufactures and sells data technology produ ...
's, leading some industry analysts to predict future worldwide shortages of hard disk drives. Western Digital was able to get one of their plants, flooded on 15 October 2011, restored and operating on 30 November 2011. The company's flood-related costs were estimated at between US$225–275 million; however, an insurance claim of US$50 million for property damage and another claim for business interruption would help lower the net impact. As a result, most hard disk drive prices almost doubled globally, which took approximately two years to recover. Because of the prices increase, Western Digital reported a 31 percent revenue increase and a more than doubled profit for
fiscal year A fiscal year (or financial year, or sometimes budget year) is used in government accounting, which varies between countries, and for budget purposes. It is also used for financial reporting by businesses and other organizations. Laws in many ...
2012.


Impacts of flooding on other countries

The economies of other countries were significantly impacted by the flood. The country that was hardest hit was Japan. Japanese firms with plants in Thailand included Toyota, Honda, Hitachi, and Canon. One analyst predicted the profits of one firm, Toyota, may be cut by (). Worker incomes in Thailand and Japan were impacted. For some firms and countries the impact was not all negative. For example, Thailand is a major exporter of seafood and countries like India have firms that gained as they stepped to fill in the void. Thailand's flood helped contribute to a total estimated in economic losses for the first nine months of 2011. These losses represented 80 percent of the world's total economic losses and the insurance industry responded by raising rates in some areas between 50 and 200 percent or by not accepting new clients in Asia.


Damage to tourism

In early-November 2011, the Governor of the Tourism Authority of Thailand (TAT), Suraphon Svetasreni, projected a combined loss as high as US$825 million owing to reduced international and national tourism. TAT projected that between 220,000 and 300,000 visitors would cancel their trips. Tourism numbers had been running higher than 2010 until the end of October 2011. Arrivals at Bangkok's airport were up 6.7 percent compared to October 2010 and same month last year, Phuket arrivals were up 28.5 percent. The TAT wanted tourists to know tourist destinations such as
Chiang Rai Chiang Rai ( th, เชียงราย, ; nod, , เจียงฮาย, ) is the northernmost major city in Thailand, with a population of about 200,000 people. It is located in Mueang Chiang Rai District, Chiang Rai Province. Chiang Rai ...
,
Chiang Mai Chiang Mai (, from th, เชียงใหม่ , nod, , เจียงใหม่ ), sometimes written as Chiengmai or Chiangmai, is the largest city in northern Thailand, the capital of Chiang Mai province and the second largest city in ...
,
Mae Hong Son Mae Hong Son ( th, แม่ฮ่องสอน, ) is a town (''thesaban mueang'') in north-west Thailand, capital of Mae Hong Son Province. It is in the Shan Hills, near the border with Burma along the banks of the River Pai. As of 2018, the ...
, Pai,
Kanchanaburi Kanchanaburi ( th, กาญจนบุรี, ) is a town municipality (''thesaban mueang'') in the west of Thailand and part of Kanchanaburi Province. In 2006 it had a population of 31,327. That number was reduced to 25,651 in 2017. The town ...
,
Ratchaburi Ratchaburi ( th, ราชบุรี, ) or Rajburi, Rat Buri) is a town (''thesaban mueang'') in western Thailand, capital of Ratchaburi Province. Ratchaburi town covers the entire ''tambon'' Na Mueang (หน้าเมือง) of Mueang ...
,
Pattaya Pattaya ( th, พัทยา, , ) is a city in Thailand. It is on the east coast of the Gulf of Thailand, about southeast of Bangkok, within, but not part of, Bang Lamung district in the province of Chonburi. Pattaya City ( th, เมือ ...
, Sattahip,
Chonburi Chonburi ( th, ชลบุรี, , IAST: , ) is the capital of Chonburi Province and Mueang Chonburi District in Thailand. It is about 100 km southeast of Bangkok, on the coast of the Gulf of Thailand. Its name means 'city of water'. Cho ...
, Chantaburi,
Phetchaburi Phetchaburi ( th, เพชรบุรี, ) or Phet Buri () is a town (''thesaban mueang'') in southern Thailand, capital of Phetchaburi Province. In Thai, Phetchaburi means "city of diamonds" (''buri'' meaning "city" in Sanskrit). It is approx ...
,
Hua Hin Hua Hin ( th, หัวหิน, ) is one of eight districts (''amphoe'') of Prachuap Khiri Khan province in the northern part of the Malay Peninsula in Thailand. Its seat of government, also named Hua Hin, is a beach resort town. The district ...
, Cha-am,
Phuket Phuket (; th, ภูเก็ต, , ms, Bukit or ''Tongkah''; Hokkien:普吉; ) is one of the southern provinces (''changwat'') of Thailand. It consists of the island of Phuket, the country's largest island, and another 32 smaller islands o ...
,
Krabi Krabi ( th, กระบี่, ) is the main town in the province of Krabi (''thesaban mueang'') on the west coast of southern Thailand at the mouth of the Krabi River where it empties in Phang Nga Bay. As of 2020, the town had a population of ...
,
Phang Nga Phang Nga ( th, พังงา, , ) is a town (''thesaban mueang'') in southern Thailand, capital of Phang Nga Province. The town covers the whole ''tambon'' Thai Chang of Mueang Phang Nga district. As of 2005 it had a population of 9,559 and ...
,
Surat Thani Surat Thani ( th, สุราษฎร์ธานี, ) is a city in Amphoe Mueang Surat Thani, Surat Thani Province, southern Thailand. It lies south of Bangkok. It is the capital of Surat Thani Province. The city has a population of 1 ...
,
Trang Trang may refer to: Places * Trang province, Thailand **Trang, Thailand, capital city of Trang province **Trang Airport ** Trang railway station ** Trang River *Trang, a sub-district of Mayo district, Pattani province, Thailand * Trang (commune), ...
,
Satun Satun (, , ms, Setul) is a town (''thesaban mueang'') in southern Thailand, capital of the Satun Province. It covers the whole ''tambon'' Phiman of Mueang Satun. Satun lies 985 km south of Bangkok. As of 2005 it has a population of 21,498 ...
,
Hat Yai Hat Yai ( th, หาดใหญ่, , also Haad Yai or Had Yai) is a city in southern Thailand near the Malaysian border. It is south of Bangkok, and has a population of 156,802 (2019) in the city itself and an urban population of about 400,00 ...
,
Rayong Rayong ( th, ระยอง, ) is a city (''thesaban nakhon'') on the east coast of the Gulf of Thailand and the capital of Rayong province. It covers tambons Tha Pradu and Pak Nam and parts of ''tambons'' Choeng Noen and Noen Phra, all within ...
,
Trat Trat ( th, ตราด, ), also spelt Trad, is a town in Thailand, capital of Trat province and the Mueang Trat district. The town is in the east of Thailand, at the mouth of the Trat River, near the border with Cambodia. Etymology ''Trat'' ...
,
Chumphon Chumphon ( th, ชุมพร, ) is a town (''thesaban mueang'') in southern Thailand, capital of the Chumphon Province and Mueang Chumphon District. The city is about 463 kilometers (288 miles) from Bangkok. As of 2005 it had a population o ...
,
Ranong Ranong ( th, ระนองPronunciation) is a town ('' thesaban mueang'') in southern Thailand, capital of the Ranong Province and the Mueang Ranong District. The town covers completely the area of the '' tambon'' Khao Niwet (เขานิ ...
,
Ko Pha Ngan Ko Pha-ngan ( th, เกาะพะงัน, , ) is an island in the Gulf of Thailand in Surat Thani Province of southern Thailand. Ko Pha-ngan is best known for its Full Moon Party at Hat Rin Beach. Ko Pha-ngan has two sister islands: th ...
, and
Ko Samui Ko Samui (or Koh Samui, also often locally shortened to Samui; th, เกาะสมุย, ) is an island off the east coast of Thailand. Geographically in the Chumphon Archipelago, it is part of Surat Thani Province, though as of 2012, Ko ...
had not been affected by flooding at all. If a section of Bangkok became temporarily inaccessible, visitors still had other options. Concerns about the ability to continue food supplies to some areas was evident in the media. Some retailers in Phuket were scrambling in October 2011 to establish alternatives when their regular distribution centers were flooded. An added concern became even more pressing when it became clear on 7 November 2011 that Rama II Road, the last open link to the south, was expected to flood. To offset this risk, plans were announced to mobilize teams to reclaim Highway 340 that in parts was under up to a meter of water. In December 2011, the
Miss Earth 2011 Miss Earth 2011, the 11th edition of the Miss Earth pageant, was held on December 3, 2011 at the University of the Philippines Theater, inside the campus of the University of the Philippines Diliman in Quezon City, Philippines. Nicole Faria of ...
beauty pageant was set to be held in Bangkok, but was relocated to the
Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...
.


Sanitation concerns

Effects of the trash and sewage in flood waters were expected to peak when waters subsided, leaving behind stagnant pools of water. A spokesman for
UNICEF UNICEF (), originally called the United Nations International Children's Emergency Fund in full, now officially United Nations Children's Fund, is an agency of the United Nations responsible for providing humanitarian and developmental aid to c ...
encouraged everyone to stay out of the water as much as possible. Since a household sanitation system does not operate under flood water, individuals who remained in flooded areas exposed themselves to risks and increased risks for those living downstream by continuing to generate more sewage and trash in waters carried downstream.


In popular culture

* ''
Modernine TV MCOT HD (in Thailand called Channel 9 MCOT HD th, ช่อง 9 เอ็มคอตเอชดี) is a Thai free-to-air television network launched on 24 June 1955 and owned by MCOT. History The channel was originally launched as Cha ...
'' had discussed on the 2011 Thailand floods on ''TimeLine'', 6 November 2017, in "2011 - The City that was Submerged".


See also

*
1997 Southeast Asian haze The 1997 Southeast Asian haze was an international air pollution disaster that occurred during the second half of 1997, its after-effects causing widespread atmospheric visibility and health problems within Southeast Asia. Considered the most ...
*
2004 Indian Ocean earthquake and tsunami An earthquake and a tsunami, known as the Boxing Day Tsunami and, by the scientific community, the Sumatra–Andaman earthquake, occurred at 07:58:53 local time ( UTC+7) on 26 December 2004, with an epicentre off the west coast of northern ...
*
2010 Thai floods A series of flash floods hit different areas of Thailand and Malaysia in 2010. Separate but related floods began in the Northeast and Central Thailand (per the six-region definition) in early October due to abnormally late monsoon moisture ov ...
*
2011 Southeast Asian floods The 2011 monsoon season saw one record flood event in Indochina across several countries and a few separate limited flood events parts of the same nations: Thailand, Cambodia and Myanmar and heavy flooding in Vietnam. Meanwhile, Laos also sustained ...
*
2011 Southern Thailand floods The 2011 Thai floods occurred at the end of March 2011, normally the latter part of the dry season ( th, ฤดูแล้ง, translit=reutdu lang or ) in tropical Thailand. Heavy rain fell in the southern region, with over of rain falling ...
*
Floods in Thailand Floods in Thailand are regular natural disasters in Thailand which happen nearly every year during the monsoon season. The monsoon seasons in the country are distinct by region, the southern part mirrors the Malay Peninsula and monsoon begins in ...


Notes


References


External links

* Thai Meteorological Department
''Rainfall and severe flooding over Thailand in 2011''
* {{cite AV media , date=9 November 2017 , title=Floods: Challenging our future, language=EN , url=http://www.dw.com/en/floods-challenging-our-future-part-1/av-41308108 , access-date=2017-11-13 , archive-url=https://web.archive.org/web/20171109043027/http://www.dw.com/en/floods-challenging-our-future-part-1/av-41308108, archive-date=2017-11-09, format=Video , time= 11:50-20:15, publisher=Deutsche Welle , url-status=dead 2011 floods Floods in Thailand 2011 in Thailand