Mekong River Delta
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The Mekong Delta ( or simply ), also known as the Western Region () or South-western region (), is the
region In geography, regions, otherwise referred to as areas, zones, lands or territories, are portions of the Earth's surface that are broadly divided by physical characteristics (physical geography), human impact characteristics (human geography), and ...
in southwestern Vietnam where the
Mekong River The Mekong or Mekong River ( , ) is a transboundary river in East Asia and Southeast Asia. It is the world's List of rivers by length, twelfth-longest river and List of longest rivers of Asia, the third-longest in Asia with an estimated l ...
approaches and empties into the sea through a network of distributaries. The Mekong delta region encompasses a large portion of south-western
Vietnam Vietnam, officially the Socialist Republic of Vietnam (SRV), is a country at the eastern edge of mainland Southeast Asia, with an area of about and a population of over 100 million, making it the world's List of countries and depende ...
, of an area of over . The size of the area covered by water depends on the season. Its wet coastal geography makes it an important source of agriculture and aquaculture for the country. The delta has been occupied as early as the 4th century BC. As a product of Khmer, Vietnamese, Chinese, and French settlement in the region, the delta and its waterways have numerous names, including the Khmer term Bassac to refer to the lower basin and the largest river branch flowing through it. After the 1954 Geneva Conference, Vietnam was split into two with South Vietnam inheriting the southern half of Vietnam becoming the State of Vietnam and eventually the
Republic of Vietnam South Vietnam, officially the Republic of Vietnam (RVN; , VNCH), was a country in Southeast Asia that existed from 1955 to 1975. It first garnered international recognition in 1949 as the State of Vietnam within the French Union, with it ...
, also known as South Vietnam, with their own administrative states (see :Provinces of South Vietnam). After 1975, the Mekong Delta ceased being a part of the Republic of Vietnam, succeeded by the current Vietnamese nation. Today, the region comprises 12 provinces: Long An, Äồng Tháp, Tiá»n Giang, An Giang, Bến Tre, VÄ©nh Long, Trà Vinh, Hậu Giang, Kiên Giang,
Sóc Trăng Sóc Trăng (; ) is a city in Vietnam. It is the capital of Sóc Trăng Province. It was upgraded from a town (thị xã) to a city following decree 22/2007/NÄ-CP on 8 February 2007. History During the French colonial period, on December 20 ...
, Bạc Liêu, and Cà Mau, along with the province-level municipality of Cần Thơ. The Mekong Delta has been dubbed a "biological treasure trove". Over 1,000 animal species were recorded between 1997 and 2007 and new species of plants, fish, lizards, and mammals have been discovered in previously unexplored areas, including the Laotian rock rat, thought to be extinct. The low-lying coastal geography of the region makes it vulnerable to climate change caused
sea level Mean sea level (MSL, often shortened to sea level) is an mean, average surface level of one or more among Earth's coastal Body of water, bodies of water from which heights such as elevation may be measured. The global MSL is a type of vertical ...
rise, alongside related issues such as
coastal erosion Coastal erosion is the loss or displacement of land, or the long-term removal of sediment and rocks along the coastline due to the action of Wind wave, waves, Ocean current, currents, tides, wind-driven water, waterborne ice, or other impacts ...
and
saltwater intrusion Saltwater intrusion is the movement of saline water into freshwater aquifers, which can lead to groundwater quality degradation, including drinking water sources, and other consequences. Saltwater intrusion can naturally occur in coastal aquifers, ...
.


History


Funan and Chenla period

The Mekong Delta was likely inhabited long since prehistory with the civilizations of
Funan Funan (; , ; , Chữ Hán: ; ) was the name given by Chinese cartographers, geographers and writers to an ancient Khmer-Mon Indianized state—or, rather a loose network of states ''( Mandala)''—located in Mainland Southeast Asia covering ...
and
Chenla Chenla or Zhenla ( zh, t=真臘, s=, 真腊, p=Zhēnlà, w=Chen-la; , ; ) is the Chinese designation for the vassal of the kingdom of Funan preceding the Khmer Empire that existed from around the late 6th to the early 9th century in Indochina. ...
maintaining a presence in the Mekong Delta for centuries. Archaeological discoveries at
Óc Eo Óc Eo (Vietnamese language, Vietnamese) is an archaeological site in modern-day Óc Eo communes of Vietnam, commune of Thoại Sơn District in An Giang Province of southern Vietnam. Located in the Mekong Delta, Óc Eo was a busy port of the king ...
and other Funanese sites show that the area was an important part of the Funan civilization, bustling with trading ports and canals as early as in the first century AD and extensive human settlement in the region may have gone as far back as the 4th century BC. While there is no clear consensus on the ethnic makeup of those living in the region during the Funan, archaeologists suggest that they may have had connections to Austroasiatic people. Khmer inscriptions appear during the
Chenla Chenla or Zhenla ( zh, t=真臘, s=, 真腊, p=Zhēnlà, w=Chen-la; , ; ) is the Chinese designation for the vassal of the kingdom of Funan preceding the Khmer Empire that existed from around the late 6th to the early 9th century in Indochina. ...
period. Angkor Borei is a site in the Mekong Delta that existed between 400 BC-500 AD. This site had extensive maritime trade networks throughout Southeast Asia and with India, and is believed to have possibly been the ancient capital to the civilization of Funan.


Champa incursions

In the early 15th century,
Champa Champa (Cham language, Cham: ꨌꩌꨛꨩ, چمڤا; ; å åŸŽ or å å©†) was a collection of independent Chams, Cham Polity, polities that extended across the coast of what is present-day Central Vietnam, central and southern Vietnam from ...
began mounting several incursions in the Mekong Delta. The declining Kingdom of Cambodia asked the Chinese Ming Empire for intervention in 1408 and 1414. Despite that, in 1421 Indravarman VI of Champa seized and annexed the eastern part of the Mekong Delta, including the marketplace town of Biên Hòa. He installed a statue of TribhuvanÄkrÄnta (Visnu) there to mark the southern most extent of Champa. In 1757, Vietnamese lords had acquired control of Cà Mau. By the 1860s, French colonists had established control over the Mekong Delta and established the colony of French Cochinchina.


Vietnamese period

The Vietnamese acquisition of the Mekong Delta can be divided into two phases:


Marriage agreement and interventions

In 1621, Lord Nguyá»…n Phúc Nguyên arranged a contract marriage between his daughter Nguyá»…n Phúc Ngá»c Vạn and Cambodian king Chey Chettha II in exchange to the establishment of a Vietnamese trade port in town of Prei Nokor (now
Ho Chi Minh City Ho Chi Minh City (HCMC) ('','' TP.HCM; ), commonly known as Saigon (; ), is the most populous city in Vietnam with a population of around 14 million in 2025. The city's geography is defined by rivers and canals, of which the largest is Saigo ...
) and tax exemptions for Vietnamese settlers moving into the area. Vice versa, the Nguyá»…n will help Cambodia politically and militarily to counter against
Ayutthaya Kingdom The Ayutthaya Kingdom or the Empire of Ayutthaya was a Thai people, Thai kingdom that existed in Southeast Asia from 1351 to 1767, centered around the city of Phra Nakhon Si Ayutthaya (city), Ayutthaya, in Siam, or present-day Thailand. Europe ...
(Siamese) pressures. Earliest Vietnamese settlements in the Mekong Delta appeared and centered around Äồng Nai and Má»—i Xoài (today Bà Rịa–VÅ©ng Tàu). In 1658, without any excuses, the Nguyá»…n invaded Cambodia and deposed the only Khmer Muslim king Ramathipadi I (Sultan Ibrahim). 16 years later, the Nguyá»…n again militarily interfered Cambodian internal royal affairs, putting Prince Ang Nan into power. The Nguyá»…n invited fleeing Chinese refugees to settle in Mekong River entrance towns of
Mỹ Tho Mỹ Tho () is a city in the Tiá»n Giang province in the Mekong Delta region of South Vietnam. It has a population of approximately 169,000 in 2006 and 220,000 in 2012. It is the regional center of economics, education and technology. The majori ...
and Biên Hoà In 1688, the Chinese revolted against
Nguyá»…n lords The Nguyá»…n lords (, 主阮; 1558–1777, 1780–1802), also known as the Nguyá»…n clan (; ), were Nguyá»…n dynasty's forerunner and a feudal noble clan ruling southern Äại Việt in the Revival Lê dynasty. The Nguyá»…n lords were membe ...
. King Ang Nan died in 1691, and the revolt was soon resolved.Song, Jeong Nam, Sá»± mở rá»™ng lãnh thổ Äại Việt dưới thá»i Hậu Lê và tính chất, Korean University of Foreign Studies,
Seoul Seoul, officially Seoul Special Metropolitan City, is the capital city, capital and largest city of South Korea. The broader Seoul Metropolitan Area, encompassing Seoul, Gyeonggi Province and Incheon, emerged as the world's List of cities b ...
, 2010, p.23
After fully subjugating
Champa Champa (Cham language, Cham: ꨌꩌꨛꨩ, چمڤا; ; å åŸŽ or å å©†) was a collection of independent Chams, Cham Polity, polities that extended across the coast of what is present-day Central Vietnam, central and southern Vietnam from ...
in 1697, the Nguyá»…n lords sent marquis
Nguyá»…n Hữu Cảnh Nguyá»…n Hữu Cảnh ( vi-hantu, 阮有é¡, 1650–1700), also known as Nguyá»…n Hữu Kính and his noble rank Lá»… Thành Hầu, was a high-ranking general of Lord Nguyá»…n Phúc Chu. His military expeditions into the Mekong Delta placed the ...
and a small expedition to annex Prei Nokor, renamed it to Gia Äịnh, establishing Vietnamese administrative structures, and explore deep into the lower Mekong Delta from Mỹ Tho to An Giang. King Chey Chettha IV of Cambodia tried to stop the Vietnamese but was defeated by Nguyá»…n Hữu Cảnh in 1700. In February 1700, he invaded Cambodia from An Giang. In March, the Vietnamese expedition under Cảnh and a Chinese general Trần Thượng Xuyên (Chen Shangchuan) defeated the main Cambodian army at Bích Äôi citadel, king Chey Chettha IV took flight while his nephew Ang Em surrendered to the invaders as the Vietnamese captured
Phnom Penh Phnom Penh is the Capital city, capital and List of cities and towns in Cambodia, most populous city of Cambodia. It has been the national capital since 1865 and has grown to become the nation's primate city and its political, economic, industr ...
. As a result, Saigon and Long An were officially obtained by the Nguyá»…n, more Vietnamese settlers moved into the new conquered lands. In 1708,
Mạc Cửu Cửu (, vi-hantu, 鄚玖, ; ''or'' ; 1655– July 18, 1735), also spelled Mok Kui, was an exile from China who founded the Principality of Hà Tiên and ruled as its first monarch. He played a role in the relations between Cambodia and the ...
of Hà Tiên also pledged loyalty to the Nguyễn lords.


Conquest of the Mekong Delta

In the 18th century, the edges of the Mekong Delta bordering with Cambodia had been mainly inhabited by isolated communities of
Shafi'i The Shafi'i school or Shafi'i Madhhab () or Shafi'i is one of the four major schools of fiqh (Islamic jurisprudence), belonging to the Ahl al-Hadith tradition within Sunni Islam. It was founded by the Muslim scholar, jurist, and traditionis ...
Chams The Chams ( Cham: , چام, ''cam''), or Champa people ( Cham: , اوراڠ چمڤا, ''Urang Campa''; or ; , ), are an Austronesian ethnic group in Southeast Asia and are the original inhabitants of central Vietnam and coastal Cambodia be ...
and Islamic Cham– Malays collectively known as the Cham Barw or Côn Man (
Kunlun The Kunlun Mountains constitute one of the longest mountain chains in Asia, extending for more than . In the broadest sense, the chain forms the northern edge of the Tibetan Plateau south of the Tarim Basin. Located in Western China, the Kunlu ...
) by Vietnamese sources, while most of the Delta remained under Cambodian control. Under the reign of king Chey Chettha V, in 1750 he began subduing and persecuting the Cham–Malay Muslims, who at the time were close allies of the Nguyễn lords. Using that pretext, Lord Nguyễn Phúc Khoát launched a full-scale invasion of Cambodia in 1754, with the army under the command of general Nguyễn Cư Trinh. 10,000 Vietnamese troops divided into two groups, rolled into Cambodia and completely flattened Cambodian resistance and easily captured its capital
Phnom Penh Phnom Penh is the Capital city, capital and List of cities and towns in Cambodia, most populous city of Cambodia. It has been the national capital since 1865 and has grown to become the nation's primate city and its political, economic, industr ...
in summer of 1754. King Chey Chettha V fled to Longvek. The Muslims rose up and joined the Vietnamese chasing the Cambodians. Due to heavy spring rain, the Muslim segment lost contact with the main army of Nguyá»…n Cư Trinh, and were surrounded by 10,000 Cambodians at Vô Tà Ân in early 1755. Muslim troops piled carts and wagons into a defensive perimeter and stood their ground against Cambodian attacks until being relieved by Nguyá»…n Cư Trinh. With the help of mediation by Mạc Thiên Tứ of Hà Tiên, a ceasefire agreement was reached between King Chey Chettha V and Lord Nguyá»…n Phúc Khoát in 1756: Cambodia ceded Gò Công and Tân An to the Vietnamese, Chey Chettha V was deposed, while Ang Tong was restored as King of Cambodia. Ang Tong offered the Nguyá»…n two districts of Trà Vinh and Ba Thắc as tributes.Song, Jeong Nam, Sá»± mở rá»™ng lãnh thổ Äại Việt dưới thá»i Hậu Lê và tính chất, Korean University of Foreign Studies,
Seoul Seoul, officially Seoul Special Metropolitan City, is the capital city, capital and largest city of South Korea. The broader Seoul Metropolitan Area, encompassing Seoul, Gyeonggi Province and Incheon, emerged as the world's List of cities b ...
, 2010, p.25
In 1757, Ang Tong died and was succeeded Outey II. With the help of the Nguyễn Lords and the Principality of Hà Tiên, Outey II regained the throne from usurpers. He gave all remaining Mekong Delta lands to Mạc Thiên Tứ, and Mạc Thiên Tứ swapped all these areas to the Nguyễn in exchange for the Mạc clan's total autonomy in Hà Tiên. The new lands were divided into two districts: Rạch Giá and Cà Mau. By 1757, all of today's Mekong Delta including the Cape Cà Mau firmly came under Vietnamese control.


Nguyá»…n dynasty, French and modern period

In 1802 Nguyá»…n Ãnh crowned himself emperor
Gia Long Gia Long (Chữ Hán, Chữ hán: 嘉隆) ( (''Hanoi, North''), (''Ho Chi Minh City, South''); 8 February 1762 – 3 February 1820), born Nguyá»…n Phúc Ãnh (é˜®ç¦æšŽ) or Nguyá»…n Ãnh (阮暎), was the founding emperor of the Nguyá»…n dynas ...
and unified all the territories comprising modern Vietnam, including the Mekong Delta. Upon the conclusion of the Cochinchina Campaign in the 1860s, the area became part of
Cochinchina Cochinchina or Cochin-China (, ; ; ; ; ) is a historical exonym and endonym, exonym for part of Vietnam, depending on the contexts, usually for Southern Vietnam. Sometimes it referred to the whole of Vietnam, but it was commonly used to refer t ...
, France's first colony in Vietnam, and later, part of
French Indochina French Indochina (previously spelled as French Indo-China), officially known as the Indochinese Union and after 1941 as the Indochinese Federation, was a group of French dependent territories in Southeast Asia from 1887 to 1954. It was initial ...
. Beginning during the French colonial period, the French patrolled and fought on the waterways of the Mekong Delta region with their ''Divisions navales d'assaut ( Dinassaut)'', a tactic which lasted throughout the
First Indochina War The First Indochina War (generally known as the Indochina War in France, and as the Anti-French Resistance War in Vietnam, and alternatively internationally as the French-Indochina War) was fought between French Fourth Republic, France and Việ ...
, and was later employed by the US Navy Mobile Riverine Force. During the
Vietnam War The Vietnam War (1 November 1955 – 30 April 1975) was an armed conflict in Vietnam, Laos, and Cambodia fought between North Vietnam (Democratic Republic of Vietnam) and South Vietnam (Republic of Vietnam) and their allies. North Vietnam w ...
—also referred to as the Second Indochina War—the Delta region saw savage fighting between Viet Cong (NLF) guerrillas and the US 9th Infantry Division and units of the United States Navy's swift boats and hovercraft ( PACVs) plus the
Army of the Republic of Vietnam The Army of the Republic of Vietnam (ARVN; ; ) composed the ground forces of the Republic of Vietnam Military Forces, South Vietnamese military from its inception in 1955 to the Fall of Saigon on 30 April 1975. Its predecessor was the ground forc ...
7th, 9th, and 21st Infantry Divisions. As a military region the Mekong Delta was encompassed by the IV Corps Tactical Zone (IV CTZ). In 1975, North Vietnamese soldiers and Viet Cong soldiers launched a massive invasion in many parts of South Vietnam. While I, II, and III Corps collapsed significantly, IV Corps was still highly intact due to under Major General
Nguyá»…n Khoa Nam Major General Nguyá»…n Khoa Nam (23 September 1927 – 30 April 1975) was a native of Äà Nẵng and served in the Army of the Republic of Vietnam (ARVN). He received his primary education at the École des Garçons in Äà Nẵng and graduate ...
overseeing strong military operations to prevent VC taking over any important regional districts. Brigadier General Lê Văn Hưng, the head of 21st Division commander, stayed office in Cần Thơ to continue defending successfully against VC. On 29 April 1975, the last U.S. Consul General Terry McNamara and his diplomats evacuated by marine boat from Cần Thơ to the South China Sea. When the South Vietnamese President
Dương Văn Minh Dương Văn Minh (; 16 February 19166 August 2001), popularly known as Big Minh, was a South Vietnamese politician and a senior general in the Army of the Republic of Vietnam (ARVN) and a politician during the presidency of Ngô Äình Diệm. ...
ordered unconditional surrender, both ARVN generals in Cần Thơ, General Lê Văn Hưng and Nguyễn Khoa Nam, committed suicide. At Binh Thuy Air Base some ARVN soldiers and air base personnel who defended the air base were evacuated by helicopters and several jet fighters to
Thailand Thailand, officially the Kingdom of Thailand and historically known as Siam (the official name until 1939), is a country in Southeast Asia on the Mainland Southeast Asia, Indochinese Peninsula. With a population of almost 66 million, it spa ...
shortly after hearing Minh's surrender. Within hours, VC soldiers occupied the base and captured those ARVN and air base personnel who didn't escape. In
Mỹ Tho Mỹ Tho () is a city in the Tiá»n Giang province in the Mekong Delta region of South Vietnam. It has a population of approximately 169,000 in 2006 and 220,000 in 2012. It is the regional center of economics, education and technology. The majori ...
, Brigadier General Trần Văn Hai, who was in charged protecting National Highway 4 (now NH1A) from Saigon to Cần Thơ, committed suicide. Tran was one of the three ARVN generals who refused to be evacuated by American forces when the North Vietnamese soldiers invaded Saigon. Several ARVN soldiers continued to fight against the VC but later either surrendered or disbanded when faced with VC counterattacks. In the late 1970s, the
Khmer Rouge The Khmer Rouge is the name that was popularly given to members of the Communist Party of Kampuchea (CPK), and by extension to Democratic Kampuchea, which ruled Cambodia between 1975 and 1979. The name was coined in the 1960s by Norodom Sihano ...
regime attacked Vietnam in an attempt to reconquer the Delta region. This campaign precipitated the Vietnamese invasion of Cambodia and subsequent downfall of the Khmer Rouge.


Geography

The Mekong Delta, as a region, lies immediately to the west of
Ho Chi Minh City Ho Chi Minh City (HCMC) ('','' TP.HCM; ), commonly known as Saigon (; ), is the most populous city in Vietnam with a population of around 14 million in 2025. The city's geography is defined by rivers and canals, of which the largest is Saigo ...
(also called Saigon by locals), roughly forming a triangle stretching from
Mỹ Tho Mỹ Tho () is a city in the Tiá»n Giang province in the Mekong Delta region of South Vietnam. It has a population of approximately 169,000 in 2006 and 220,000 in 2012. It is the regional center of economics, education and technology. The majori ...
in the east to Châu Äốc and Hà Tiên in the northwest, down to Cà Mau at the southernmost tip of Vietnam, and including the island of Phú Quốc. The Mekong Delta region of Vietnam displays a variety of physical landscapes, but is dominated by flat flood plains in the south, with a few hills in the north and west. This diversity of terrain was largely the product of
tectonic uplift Tectonic uplift is the orogeny, geologic uplift of Earth#Surface, Earth's surface that is attributed to plate tectonics. While Isostasy, isostatic response is important, an increase in the mean elevation of a region can only occur in response to ...
and folding brought about by the collision of the Indian and Eurasian tectonic plates about 50 million years ago. The soil of the lower Delta consists mainly of sediment from the
Mekong The Mekong or Mekong River ( , ) is a transboundary river in East Asia and Southeast Asia. It is the world's twelfth-longest river and the third-longest in Asia with an estimated length of and a drainage area of , discharging of wat ...
and its tributaries, deposited over thousands of years as the river changed its course due to the flatness of the low-lying terrain. The present Mekong Delta system has two major distributary channels, both discharging directly into the East Sea. The river carries over 160 million tons of sediment, including 6.5 million tons of sand, each year. Historic sediment loads are estimated to be higher, but have been reduced due to damming for hydropower in the upper reaches of the Mekong River Basin, and sand mining in the riverbed. Sediment is the driving factor in building the delta seaward (
progradation In sedimentary geology and geomorphology, the term progradation refers to the growth of a river delta farther out into the sea over time. This occurs when the volume of incoming sediment is greater than the volume of the delta that is lost through ...
), and upward ( aggradation) from seasonal flooding, and is counteracted by
coastal erosion Coastal erosion is the loss or displacement of land, or the long-term removal of sediment and rocks along the coastline due to the action of Wind wave, waves, Ocean current, currents, tides, wind-driven water, waterborne ice, or other impacts ...
and
sea level rise The sea level has been rising from the end of the last ice age, which was around 20,000 years ago. Between 1901 and 2018, the average sea level rose by , with an increase of per year since the 1970s. This was faster than the sea level had e ...
. The
Holocene The Holocene () is the current geologic time scale, geological epoch, beginning approximately 11,700 years ago. It follows the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene to ...
history of the Mekong Delta shows delta progradation of about 200 km during the last 6 kyr. During the Middle Holocene the Mekong River was discharging waters into both the East Sea and the
Gulf of Thailand The Gulf of Thailand (), historically known as the Gulf of Siam (), is a shallow inlet adjacent to the southwestern South China Sea, bounded between the southwestern shores of the Indochinese Peninsula and the northern half of the Malay Peninsula. ...
. The water entering the Gulf of Thailand was flowing via a palaeochannel located within the western part of the delta; north of the Camau Peninsula. Upper
Pleistocene The Pleistocene ( ; referred to colloquially as the ''ice age, Ice Age'') is the geological epoch (geology), epoch that lasted from to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fin ...
prodeltaic and delta front sediments interpreted as the deposits of the palaeo-Mekong River were reported from central basin of the
Gulf of Thailand The Gulf of Thailand (), historically known as the Gulf of Siam (), is a shallow inlet adjacent to the southwestern South China Sea, bounded between the southwestern shores of the Indochinese Peninsula and the northern half of the Malay Peninsula. ...
. The Mekong Delta is the region with the smallest forest area in Vietnam. or 7.7% of the total area are forested as of 2011. The only provinces with large forests are
Cà Mau province Cà Mau is a Provinces of Vietnam, province of Vietnam, named after Cà Mau, its capital city. It is located in the Mekong Delta of southern Vietnam, and is the southernmost of Vietnam's 63 provinces. It is bordered to the north by Kiên Giang p ...
and
Kiên Giang province Kiên Giang was a former province of Vietnam, located in the Mekong Delta region of southern Vietnam. It is known for fishing and rice farming. The provincial capital is Rạch Giá, from Ho Chi Minh City. Kiên Giang's area is and its popul ...
, together accounting for two-thirds of the region's forest area, while forests cover less than 5% of the area of all of the other eight provinces and cities.


Coastal erosion

From 1973 to 2005, the Mekong Delta's seaward shoreline growth decreased gradually from a mean of 7.8 m/yr to 2.8 m/yr, becoming negative after 2005, with a retreat rate of −1.4 m/yr. The net deltaic land area gain has also been slowing, with the mean rate decreasing from 4.3 km2/yr (1973–1979) to 1.0 km2 yr (1995–2005), and then to −0.05 km2/yr (2005–2015). Thus, in about 2005, the subaerial Mekong Delta transitioned from a constructive mode to an erosional (or destructive) mode.


Climate change concerns

Being a low-lying coastal region, the Mekong Delta is particularly susceptible to floods resulting from rises in sea level due to
climate change Present-day climate change includes both global warming—the ongoing increase in Global surface temperature, global average temperature—and its wider effects on Earth's climate system. Climate variability and change, Climate change in ...
. The Climate Change Research Institute at Cần Thơ University, in studying the possible consequences of climate change, has predicted that, besides suffering from drought brought on by seasonal decrease in rainfall, many provinces in the Mekong Delta will be flooded by the year 2030. The most serious cases are predicted to be the provinces of Bến Tre and Long An, of which 51% and 49%, respectively, are expected to be flooded if the sea level rises by .Mekong Delta: more flood and drought
". VietnamNet Bridge. March 19, 2009.
Plans are currently being made to breach dykes in the upper Mekong delta, as a
sedimentation enhancing strategy Sedimentation enhancing strategies are Environmental resource management, environmental management projects aiming to restore and facilitate land-building processes in River delta, deltas. Sediment availability and deposition are important because ...
. This will not only increase the water retention capacity of the upper delta region, alleviating pressure on the lower delta, but also reintroduce sediment-rich water which may result in land elevation. Another problem caused by climate change is the increasing
soil salinity Soil salinity is the salt (chemistry), salt content in the soil; the process of increasing the salt content is known as salinization (also called salination in American and British English spelling differences, American English). Salts occur nat ...
near the coasts. Bến Tre province is planning to reforest coastal regions to counter this trend. The duration of inundations at an important road in the city of Cần Thơ is expected to continue to rise from the current total of 72 inundated days per year to 270 days by 2030 and 365 days by 2050. This is attributed to the combined influence of sea-level rise and land subsidence, which occurs at about annually. Several projects and initiatives on local, regional and state levels work to counter this trend and save the Mekong Delta. For example, there exists a programme for integrated
coastal management Coastal management is defence against flooding and erosion, and techniques that stop erosion to claim lands. Protection against rising sea levels in the 21st century is crucial, as sea level rise accelerates due to climate change. Changes in s ...
that is supported by Germany and Australia. Additionally, international and local initiatives, including significant environmental funding and legislation like Resolution 120 in 2017, emphasize sustainable management and conservation of
natural resource Natural resources are resources that are drawn from nature and used with few modifications. This includes the sources of valued characteristics such as commercial and industrial use, aesthetic value, scientific interest, and cultural value. ...
s, focusing on nature-based solutions such as retrofitting dikes, mangrove restoration, and multi-value farming to mitigate environmental degradation. In August 2019, a ''
Nature Communications ''Nature Communications'' is a peer-reviewed, open access, scientific journal published by Nature Portfolio since 2010. It is a multidisciplinary journal that covers the natural sciences, including physics, chemistry, earth sciences, medic ...
'' study using an improved measure of elevation estimation, found that the delta was much lower than previous estimates, only a mean above sea level, with 75% of the delta—an area where 12 million people currently live—falling below . It is expected that a majority of the delta will be below sea level by 2050.


Demographics

The inhabitants of the Mekong Delta region are predominantly ethnic Vietnamese. It is home to the largest population of Khmer outside of Cambodia. The Khmer minority population live primarily in the Trà Vinh,
Sóc Trăng Sóc Trăng (; ) is a city in Vietnam. It is the capital of Sóc Trăng Province. It was upgraded from a town (thị xã) to a city following decree 22/2007/NÄ-CP on 8 February 2007. History During the French colonial period, on December 20 ...
, and Muslim Chăm in Tân Châu, An Giang and Cà Mau provinces. There are also sizeable Hoa (ethnic Chinese) populations in the Kiên Giang, and Trà Vinh provinces. The region had a population of 17.33 million people in 2011.General Statistics Office (2012): ''Statistical Yearbook of Vietnam 2011''. Statistical Publishing House, Hanoi The languages spoken in the Mekong Delta are mainly Vietnamese and Khmer which cover almost the majority of the population. Then there are also various
Chinese languages The Sinitic languages (), often synonymous with the Chinese languages, are a group of East Asian analytic languages that constitute a major branch of the Sino-Tibetan language family. It is frequently proposed that there is a primary split b ...
spoken by the Hoa community, as well as the Cham and Mekong Delta Malay languages which are the
lingua franca A lingua franca (; ; for plurals see ), also known as a bridge language, common language, trade language, auxiliary language, link language or language of wider communication (LWC), is a Natural language, language systematically used to make co ...
for the
Muslim Muslims () are people who adhere to Islam, a Monotheism, monotheistic religion belonging to the Abrahamic religions, Abrahamic tradition. They consider the Quran, the foundational religious text of Islam, to be the verbatim word of the God ...
community there. The population of the Mekong Delta has been growing relatively slowly in recent years, mainly due to out-migration. The region's population only increased by 471,600 people between 2005 and 2011, while 166,400 people migrated out in 2011 alone. Together with the central coast regions, it has one of the slowest growing populations in the country. Population growth rates have been between 0.3% and 0.5% between 2008 and 2011, while they have been over 2% in the neighbouring southeastern region. Net migration has been negative in all of these years. The region also has a relatively low fertility rate, at 1.8 children per woman in 2010 and 2011, down from 2.0 in 2005.


Provinces


Economy

The Mekong Delta is by far Vietnam's most productive region in agriculture and aquaculture, while its role in industry and
foreign direct investment A foreign direct investment (FDI) is an ownership stake in a company, made by a foreign investor, company, or government from another country. More specifically, it describes a controlling ownership an asset in one country by an entity based i ...
(FDI) is much smaller.


Agriculture

2.6 million ha in the Mekong Delta are used for agriculture, which is one fourth of Vietnam's total. Due to its mostly flat terrain and few forested areas (except for
Cà Mau province Cà Mau is a Provinces of Vietnam, province of Vietnam, named after Cà Mau, its capital city. It is located in the Mekong Delta of southern Vietnam, and is the southernmost of Vietnam's 63 provinces. It is bordered to the north by Kiên Giang p ...
), almost two-thirds (64.5%) of the region's land can be used for agriculture. The share of agricultural land exceeds 80% in Cần Thơ and neighbouring Hậu Giang province and is below 50% only in
Cà Mau province Cà Mau is a Provinces of Vietnam, province of Vietnam, named after Cà Mau, its capital city. It is located in the Mekong Delta of southern Vietnam, and is the southernmost of Vietnam's 63 provinces. It is bordered to the north by Kiên Giang p ...
(32%) and
Bạc Liêu province Bạc Liêu was a former province of Vietnam. It is a coastal province, and is situated in the Mekong Delta region of the southern part of the country. On June 12th, 2025, Bạc Liêu was incorporated into Cà Mau province. Administrative divi ...
(42%). The region's land used for growing cereals makes up 47% of the national total, more than northern and central Vietnam combined. Most of this is used for rice cultivation. Rice output in 2011 was 23,186,000t, 54.8% of Vietnam's total output. The strongest producers are
Kiên Giang province Kiên Giang was a former province of Vietnam, located in the Mekong Delta region of southern Vietnam. It is known for fishing and rice farming. The provincial capital is Rạch Giá, from Ho Chi Minh City. Kiên Giang's area is and its popul ...
, An Giang province, and Äồng Tháp province, producing over 3 million tonnes each and almost 11 million tonnes together. Any two of these provinces produce more than the entire Red River Delta. Only three provinces produce less than 1 million tonnes of rice (
Bạc Liêu province Bạc Liêu was a former province of Vietnam. It is a coastal province, and is situated in the Mekong Delta region of the southern part of the country. On June 12th, 2025, Bạc Liêu was incorporated into Cà Mau province. Administrative divi ...
,
Cà Mau province Cà Mau is a Provinces of Vietnam, province of Vietnam, named after Cà Mau, its capital city. It is located in the Mekong Delta of southern Vietnam, and is the southernmost of Vietnam's 63 provinces. It is bordered to the north by Kiên Giang p ...
,
Bến Tre province Bến Tre was a former province of Vietnam. It is one of the country's southern provinces, and is situated in the Mekong Delta. It is also famous for its coconuts and the Coconut Religion nationwide. Disconnected from the mainland, the province ...
).


Fishery

The Mekong Delta is also Vietnam's most important fishing region. It has almost half of Vietnam's capacity of offshore fishing vessels (mostly in Kien Gian with almost 1/4, Bến Tre, Cà Mau, Tiá»n Giang, Bạc Liêu). Fishery output was at 3.168 million tons (58.3% of Vietnam) and has experienced rapid growth from 1.84mt in 2005. All of Vietnam's largest fishery producers with over 300kt of output are in the Mekong Delta: Kiên Giang, Cà Mau, Äồng Tháp, An Giang, and Bến Tre. Despite the region's large offshore fishing fleet, 2/3 (2.13 million tonnes out of Vietnam's total of 2.93) of fishery output actually comes from aquaculture. December 2015, aquaculture production was estimated at 357 thousand tons, up 11% compared to the same period last year, bringing the total aquaculture production 3516 thousand tons in 2015, up 3.0% compared to the same period. Although aquaculture production has increased overall, aquaculture still faces many difficulties coming from export markets.


Industry and FDI

The Mekong Delta is not strongly industrialized, but is still the third out of seven regions in terms of industrial
gross output In economics, gross output (GO) is a measure of the value of production of new goods and services during an accounting period. Gross output represents the total value of ''sales'' by producing enterprises (their gross revenue or turnover) in an ac ...
. The region's industry accounts for 10% of Vietnam's total as of 2011. Almost half of the region's industrial production is concentrated in Cần Thơ, Long An province and
Cà Mau province Cà Mau is a Provinces of Vietnam, province of Vietnam, named after Cà Mau, its capital city. It is located in the Mekong Delta of southern Vietnam, and is the southernmost of Vietnam's 63 provinces. It is bordered to the north by Kiên Giang p ...
. Cần Thơ is the economic center of the region and more industrialized than the other provinces. Long An has been the only province of the region to attract part of the manufacturing booming around
Ho Chi Minh City Ho Chi Minh City (HCMC) ('','' TP.HCM; ), commonly known as Saigon (; ), is the most populous city in Vietnam with a population of around 14 million in 2025. The city's geography is defined by rivers and canals, of which the largest is Saigo ...
and is seen by other provinces as an example of successful FDI attraction.
Cà Mau province Cà Mau is a Provinces of Vietnam, province of Vietnam, named after Cà Mau, its capital city. It is located in the Mekong Delta of southern Vietnam, and is the southernmost of Vietnam's 63 provinces. It is bordered to the north by Kiên Giang p ...
is home to a large industrial zone including power plants and a fertiliser factory. Accumulated foreign direct investment in the Mekong Delta until 2011 was $10.257bn. It has been highly concentrated in a few provinces, led by Long An and Kiên Giang with over $3bn each, Tiá»n Giang and Cần ThÆ¡ (around 850m), Cà Mau (780m) and Hậu Giang (673m), while the other provinces have received less than 200m each. In general, the performance of the region in attracting FDI is evaluated as unsatisfactory by local analysts and policymakers. Companies from
Ho Chi Minh City Ho Chi Minh City (HCMC) ('','' TP.HCM; ), commonly known as Saigon (; ), is the most populous city in Vietnam with a population of around 14 million in 2025. The city's geography is defined by rivers and canals, of which the largest is Saigo ...
have also invested heavily in the region. Their investment from 2000 to June 2011 accounted for 199 trillion VND (almost $10bn).


Infrastructure

The construction of the Cần Thơ Bridge, a cable-stayed bridge over the largest
distributary A distributary, or a distributary channel is a stream channel that branches off and flows a main stream channel. It is the opposite of a ''tributary'', a stream that flows another stream or river. Distributaries are a result of river bifurc ...
of the Mekong River, was completed on April 12, 2010, three years after a collapse that killed 54 and injured nearly 100 workers. The bridge replaces the ferry system that currently runs along National Route 1, and links
Vĩnh Long province Vĩnh Long () is a province located in the Mekong Delta of southwestern Vietnam. Its capital is Vĩnh Long. Its population is 1,046,390 and its area is . Vĩnh Long (spelled 永隆 in the former Hán-Nôm writing system) is a Sino-Vietnamese na ...
and Cần ThÆ¡ city. The cost of construction is estimated to be 4.842 trillion Vietnamese đồng (approximately 342.6 million
United States dollar The United States dollar (Currency symbol, symbol: Dollar sign, $; ISO 4217, currency code: USD) is the official currency of the United States and International use of the U.S. dollar, several other countries. The Coinage Act of 1792 introdu ...
s), making it the most expensive bridge in
Vietnam Vietnam, officially the Socialist Republic of Vietnam (SRV), is a country at the eastern edge of mainland Southeast Asia, with an area of about and a population of over 100 million, making it the world's List of countries and depende ...
. The region is served by 3 airports: * Can Tho International Airport * Rach Gia Airport *
Phu Quoc International Airport Phu Quoc International Airport is an international airport that serves Phú Quốc Island, in southern Vietnam. It covers nearly 900 hectares of land area in the commune of Dương Tơ, about south of the administrative centre of Phú Quốc C ...
(serving the island of Phú Quốc) However, Ho Chi Minh City's Tan Son Nhat International Airport is another alternative airport which provides more domestic and international destinations. The airport is approximately located 160 km north of Cần Thơ.


Culture

Life in the Mekong Delta revolves much around the river, and many of the villages are often accessible by rivers and canals rather than by road. The region is home to
cải lương ''Tuồng cải lương'' (, Hán-Nôm: 從改良) often referred to as ''Cải lương'' (Chữ Hán: 改良), roughly "reformed theater") is a form of modern folk opera in Vietnam. It blends southern Vietnamese folk songs, classical music, ''h ...
, a form of Kinh/Vietnamese folk opera. Cai Luong Singing appeared in Mekong Delta in the early 20th century. Cai Luong Singing is often performed to the accompaniment of guitar and zither. Cai Luong is a kind of play telling a story. This often includes two main parts: the dialogue part and the singing part to express their thoughts and emotions.


Cuisine

The Mekong Delta cuisine relies heavily on fresh products which is abundant in the new land with heavy use of seafoods and unique ingredients of the region such as
palm sugar Palm sugar is a sweetener derived from any variety of palm tree. Palm sugar may be qualified by the type of palm, as in coconut palm sugar. While sugars from different palms may have slightly different compositions, all are processed simila ...
, basa fish and wild herbs and flowers such as điên điển, so đũa, kèo nèo. The history of the region being a newly settled area reflects on its cuisine, with ''Ẩm thực khẩn hoang'' or ''Settlers cuisine'' means dishes are prepared fresh from wild and newly-caught ingredients. The cuisine is also influenced by Khmer, Cham and Chinese settlers. This differs itself from the cuisine of other regions of Vietnam.


Literature and movies

Nguyá»…n Ngá»c Tư, an author from
Cà Mau province Cà Mau is a Provinces of Vietnam, province of Vietnam, named after Cà Mau, its capital city. It is located in the Mekong Delta of southern Vietnam, and is the southernmost of Vietnam's 63 provinces. It is bordered to the north by Kiên Giang p ...
, has written many popular books about life in the Mekong Delta such as: *Ngá»n đèn không tắt (The Inextinguishable Light, 2000) *Ông ngoại (Grandpa, 2001) *Biển ngưá»i mênh mông (The Ocean of People, 2003) *Giao thừa (New Year's Eve, 2003) *Nước chảy mây trôi (Flowing Waters, Flying Clouds, 2004) *Cánh đồng bất tận (The Endless Field, 2005) The 2004 film '' The Buffalo Boy'' is set in Cà Mau province. Some Vietnamese films on the topic of life in the Mekong Delta attract the attention of a large audience: Tình Mẫu Tá»­ (Mother and child love, 2019), Phận làm dâu (Bride's fate, 2018), etc.


See also

* GMS Environment Operations Center * Greater Mekong Sub-region Academic and Research Network * Mekong Basin Disease Surveillance


References


Further reading

*Renaud, F. G. and C. Kuenzer (2012): The Mekong Delta System. Interdisciplinary Analyses of a River Delta (=Springer Environmental Science and Engineering). Dordrecht: Springer. . *Kuenzer, C. and F. G. Renaud (2012): Climate Change and Environmental Change in River Deltas Globally. In: Renaud, F. G. and C. Kuenzer (eds.): The Mekong Delta System. Interdisciplinary Analyses of a River Delta (=Springer Environmental Science and Engineering). Dordrecht: Springer, pp. 7–48. *Renaud F. G. and C. Kuenzer (2012): Introduction. In: Renaud, F. G. and C. Kuenzer (eds.): The Mekong Delta System. Interdisciplinary Analyses of a River Delta (=Springer Environmental Science and Engineering). Dordrecht: Springer, pp. 3–6. *Moder, F., C. Kuenzer, Z. Xu, P. Leinenkugel and Q. Bui Van (2012): IWRM for the Mekong Basin. In: Renaud, F. G. and C. Kuenzer (eds.): The Mekong Delta System. Interdisciplinary Analyses of a River Delta (=Springer Environmental Science and Engineering). Dordrecht: Springer, pp. 133–166. *Klinger, V., G. Wehrmann, G. Gebhardt and C. Kuenzer (2012): A Water related Web-based Information System for the Sustainable Development of the Mekong Delta. In: Renaud, F. G. and C. Kuenzer (eds.): The Mekong Delta System. Interdisciplinary Analyses of a River Delta (=Springer Environmental Science and Engineering). Dordrecht: Springer, pp. 423–444. *Gebhardt, S., L. D. Nguyen and C. Kuenzer (2012): Mangrove Ecosystems in the Mekong Delta. Overcoming Uncertainties in Inventory Mapping Using Satellite Remote Sensing Data. In: Renaud, F. G. and C. Kuenzer (eds.): The Mekong Delta System. Interdisciplinary Analyses of a River Delta (=Springer Environmental Science and Engineering). Dordrecht: Springer, pp. 315–330. *Kuenzer, C., H. Guo, J. Huth, P. Leinenkugel, X. Li and S. Dech (2013): Flood Mapping and Flood Dynamics of the Mekong Delta. ENVISAT-ASAR-WSM Based Time-Series Analyses. In: Remote Sensing 5, pp. 687–715. DOI: 10.3390/rs5020687. *Gebhardt, S., J. Huth, N. Lam Dao, A. Roth and C. Kuenzer (2012): A comparison of TerraSAR-X Quadpol backscattering with RapidEye multispectral vegetation indices over rice fields in the Mekong Delta, Vietnam. In: International Journal of Remote Sensing 33 (24), pp. 7644–7661. *Leinenkugel, P., T. Esch and C. Kuenzer (2011): Settlement detection and impervious surface estimation in the Mekong Delta using optical and SAR remote sensing data. In: Remote Sensing of Environment 115 (12), pp. 3007–3019. *Kuenzer, C., I. Klein, T. Ullmann, E. Foufoula-Georgiou, R. Baumhauer and S. Dech (2015): Remote Sensing of River Delta Inundation: Exploiting the Potential of Coarse Spatial Resolution, Temporally-Dense MODIS Time Series. In: Remote Sensing 7, pp. 8516-8542. DOI: 10.3390/rs70708516. *Kuenzer, C., H. Guo, I. Schlegel, V. Tuan, X. Li and S. Dech (2013): Varying scale and capability of envisat ASAR-WSM, TerraSAR-X scansar and TerraSAR-X Stripmap data to assess urban flood situations: A case study of the mekong delta in Cần ThÆ¡ province. In: ''Remote Sensing'' 5 (10), pp. 5122-5142. DOI: 10.3390/rs5105122.


External links


The WISDOM Project, a Water related Information System for the Mekong DeltaImage Google map of the Mekong Delta
*


Climate change



International Centre for Environmental Management.
Release of arsenic to deep groundwater in the Mekong Delta, Vietnam, linked to pumping-induced land subsidence
{{Authority control Mekong River River deltas of Asia Landforms of Vietnam Regions of Vietnam Biosphere reserves of Vietnam Landforms of the South China Sea Landforms of An Giang province Landforms of Bạc Liêu province Landforms of Bến Tre province Landforms of Cà Mau province Landforms of Äồng Tháp province Landforms of Hậu Giang province Landforms of Kiên Giang province Landforms of Long An province Landforms of Sóc Trăng province Landforms of Tiá»n Giang province Landforms of Trà Vinh province Landforms of VÄ©nh Long province Landforms of Cần ThÆ¡