Phước Tuy was a province of the former South Vietnam .
99-673: It now mostly corresponds to Bà Rịa–Vũng Tàu province , just southeast of Ho Chi Minh City in reunified Vietnam . During the Vietnam War it was the main region of operations for the 1st Australian Task Force . 1 ATF was based in a rubber plantation at Nui Dat , about 8 kilometers north of Ba Ria . This article about a location in Vietnam is a stub . You can help Misplaced Pages by expanding it . Ho Chi Minh City Ho Chi Minh City ( HCMC ; Vietnamese : Thành phố Hồ Chí Minh ), better known as Saigon ( Vietnamese : Sài Gòn ),
198-664: A botanical garden , the Norodom Palace , Hotel Continental , Notre-Dame Cathedral , and Bến Thành Market , among many others. In April 1865, Gia Định Báo was established in Saigon, becoming the first newspaper published in Vietnam. During the French colonial era, Saigon became known as "Pearl of the Orient" ( Hòn ngọc Viễn Đông ), or "Paris of the Extreme Orient". On 27 April 1931,
297-449: A dam , landslide, or glacier . In one instance, a flash flood killed eight people enjoying the water on a Sunday afternoon at a popular waterfall in a narrow canyon. Without any observed rainfall, the flow rate increased from about 50 to 1,500 cubic feet per second (1.4 to 42 m /s) in just one minute. Two larger floods occurred at the same site within a week, but no one was at the waterfall on those days. The deadly flood resulted from
396-646: A flash flood . Flash floods usually result from intense rainfall over a relatively small area, or if the area was already saturated from previous precipitation. The amount, location, and timing of water reaching a drainage channel from natural precipitation and controlled or uncontrolled reservoir releases determines the flow at downstream locations. Some precipitation evaporates, some slowly percolates through soil, some may be temporarily sequestered as snow or ice, and some may produce rapid runoff from surfaces including rock, pavement, roofs, and saturated or frozen ground. The fraction of incident precipitation promptly reaching
495-515: A landslide , earthquake or volcanic eruption . Examples include outburst floods and lahars . Tsunamis can cause catastrophic coastal flooding , most commonly resulting from undersea earthquakes. The primary effects of flooding include loss of life and damage to buildings and other structures, including bridges, sewerage systems, roadways, and canals. The economic impacts caused by flooding can be severe. Every year flooding causes countries billions of dollars worth of damage that threatens
594-484: A tropical cyclone or an extratropical cyclone , falls within this category. A storm surge is "an additional rise of water generated by a storm, over and above the predicted astronomical tides". Due to the effects of climate change (e.g. sea level rise and an increase in extreme weather events) and an increase in the population living in coastal areas, the damage caused by coastal flood events has intensified and more people are being affected. Flooding in estuaries
693-482: A centre of resistance against Tây Sơn. Two years later, a large Vauban citadel called Gia Định , or Thành Bát Quái ("Eight Diagrams") was built by Victor Olivier de Puymanel , one of the Nguyễn Ánh's French mercenaries . The citadel was captured by Lê Văn Khôi during his revolt of 1833–35 against Emperor Minh Mạng . Following the revolt, Minh Mạng ordered it to be dismantled, and a new citadel, called Phụng Thành ,
792-426: A common Vietnamese surname ( Hồ , 胡 ) with a given name meaning "enlightened will" (from Sino-Vietnamese , 志 明 ; Chí meaning 'will' or 'spirit', and Minh meaning 'light'), in essence, meaning "light bringer". Nowadays, "Saigon" is still used as a semi-official name for the city, in some cases being used interchangeably with Ho Chi Minh City, partly due to its long history and familiarity. "Prey Nokor City"
891-461: A country can be lost in extreme flood circumstances. Some tree species may not survive prolonged flooding of their root systems. Flooding in areas where people live also has significant economic implications for affected neighborhoods. In the United States , industry experts estimate that wet basements can lower property values by 10–25 percent and are cited among the top reasons for not purchasing
990-538: A drainage channel has been observed from nil for light rain on dry, level ground to as high as 170 percent for warm rain on accumulated snow. Most precipitation records are based on a measured depth of water received within a fixed time interval. Frequency of a precipitation threshold of interest may be determined from the number of measurements exceeding that threshold value within the total time period for which observations are available. Individual data points are converted to intensity by dividing each measured depth by
1089-627: A few minutes for roof and parking lot drainage structures, while cumulative rainfall over several days would be critical for river basins. Water flowing downhill ultimately encounters downstream conditions slowing movement. The final limitation in coastal flooding lands is often the ocean or some coastal flooding bars which form natural lakes . In flooding low lands, elevation changes such as tidal fluctuations are significant determinants of coastal and estuarine flooding. Less predictable events like tsunamis and storm surges may also cause elevation changes in large bodies of water. Elevation of flowing water
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#17328510941561188-605: A few. Gastrointestinal disease and diarrheal diseases are very common due to a lack of clean water during a flood. Most of clean water supplies are contaminated when flooding occurs. Hepatitis A and E are common because of the lack of sanitation in the water and in living quarters depending on where the flood is and how prepared the community is for a flood. When floods hit, people lose nearly all their crops, livestock, and food reserves and face starvation. Floods also frequently damage power transmission and sometimes power generation , which then has knock-on effects caused by
1287-721: A home. According to the U.S. Federal Emergency Management Agency (FEMA), almost 40 percent of small businesses never reopen their doors following a flooding disaster. In the United States, insurance is available against flood damage to both homes and businesses. Economic hardship due to a temporary decline in tourism, rebuilding costs, or food shortages leading to price increases is a common after-effect of severe flooding. The impact on those affected may cause psychological damage to those affected, in particular where deaths, serious injuries and loss of property occur. Fatalities connected directly to floods are usually caused by drowning ;
1386-598: A metropolitan area covering most parts of the southeast region plus Tiền Giang Province and Long An Province under planning, will have an area of 30,000 km (12,000 sq mi) with a population of 20 million inhabitants by 2020. Inhabitants of Ho Chi Minh City are usually known as "Saigonese" in English and "dân Sài Gòn" in Vietnamese. The majority of the population are ethnic Vietnamese ( Kinh ) at about 93.52%. Ho Chi Minh City's largest minority ethnic group are
1485-469: A mission to ask his son-in-law, King Chey Chettha II, to set up tax collection stations in Prey Nokor (Sài Gòn) and Kas Krobei (Bến Nghé). Although this was a deserted jungle area, it was located on the traffic routes between Vietnam, Cambodia, and Siam. The next two important events of this period were the establishment of the barracks and residence of Vice King Ang Non and the establishment of
1584-486: A more distant point controls at higher water levels. Effective flood channel geometry may be changed by growth of vegetation, accumulation of ice or debris, or construction of bridges, buildings, or levees within the flood channel. Periodic floods occur on many rivers, forming a surrounding region known as the flood plain . Even when rainfall is relatively light, the shorelines of lakes and bays can be flooded by severe winds—such as during hurricanes —that blow water into
1683-506: A name that was retained until the time of the French conquest in the 1860s, when it adopted the name Sài Gòn , francized as Saïgon , although the city was still indicated as 嘉 定 on Vietnamese maps written in chữ Hán until at least 1891. The current name, Ho Chi Minh City, was given after reunification in 1976 to honour Ho Chi Minh . Even today, however, the informal name of Sài Gòn remains in daily speech. However, there
1782-532: A new région called Saigon–Cholon consisting of Saigon and Cholon was formed; the name Cholon was dropped after South Vietnam gained independence from France in 1955. From about 256,000 in 1930, Saigon's population rose to 1.2 million in 1950. In 1949, former Emperor Bảo Đại made Saigon the capital of the State of Vietnam with himself as head of state. In 1954, the Geneva Agreement partitioned Vietnam along
1881-607: A palace at Tân Mỹ (near the present-day Cống Quỳnh–Nguyễn Trãi crossroads). It can be said that Saigon was formed from these three government agencies. In 1679, Lord Nguyễn Phúc Tần allowed a group of Chinese refugees from the Qing dynasty to settle in Mỹ Tho , Biên Hòa and Saigon to seek refuge. In 1698, Nguyễn Hữu Cảnh , a Vietnamese noble, was sent by the Nguyễn rulers of Huế by sea to establish Vietnamese administrative structures in
1980-402: A quarter of the country's total GDP . Ho Chi Minh City's metropolitan area is ASEAN's 6th largest economy , also the biggest outside an ASEAN country capital. Since ancient times, water transport has been heavily used by inhabitants in the area. The area was occupied by Champa from 2nd century AD to around the 19th century, due to Đại Việt 's expansionist policy of Nam tiến . After
2079-602: A small group of Bawean from Bawean Island in Indonesia (about 400; as of 2015), they occupy District 1. Various other nationalities including Koreans, Japanese, Americans, South Africans, Filipinos and Britons reside in Ho Chi Minh City, particularly in Thủ Đức and District 7 as expatriate workers. As of April 2009, the city recognises 13 religions and 1,983,048 residents identify as religious people. Buddhism and Catholicism are
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#17328510941562178-413: A thunderstorm over part of the drainage basin, where steep, bare rock slopes are common and the thin soil was already saturated. Flash floods are the most common flood type in normally-dry channels in arid zones, known as arroyos in the southwest United States and many other names elsewhere. In that setting, the first flood water to arrive is depleted as it wets the sandy stream bed. The leading edge of
2277-520: A type of hybrid river/areal flooding can occur, known locally as "overland flooding". This is different from "overland flow" defined as "surface runoff". The Red River Valley is a former glacial lakebed, created by Lake Agassiz , and over a length of 550 mi (890 km), the river course drops only 236 ft (72 m), for an average slope of about 5 inches per mile (or 8.2 cm per kilometer). In this very large area, spring snowmelt happens at different rates in different places, and if winter snowfall
2376-737: Is 28 °C (82 °F), with little variation throughout the year. The highest temperature recorded was 40.0 °C (104 °F) in April while the lowest temperature recorded was 13.8 °C (57 °F) in January. On average, the city experiences between 2,400 and 2,700 hours of sunshine per year. The city is a municipality at the same level as Vietnam's provinces , which is subdivided into 22 district-level sub-divisions (as of 2020): They are further subdivided into 5 commune-level towns (or townlets), 58 communes, and 249 wards (as of 2020 , see List of HCMC administrative units below). On 1 January 2021, it
2475-573: Is 47 km (29 mi). Due to its location on the Mekong Delta, the city is fringed by tidal flats that have been heavily modified for agriculture. Saigon is considered one of the most vulnerable cities to the effects of climate change , particularly flooding. During the rainy season, a combination of high tide, heavy rains, high flow volume in the Saigon River and Đồng Nai River and land subsidence results in regular flooding in several parts of
2574-515: Is a technical difference between the two terms: Sài Gòn is commonly used to refer to the city centre in District 1 and the adjacent areas, while Ho Chi Minh City refers to all of its urban and rural districts. The original toponym behind Sài Gòn, was attested earliest as 柴棍 , with two phonograms whose Sino-Vietnamese readings are sài and côn respectively, in Lê Quý Đôn's "Miscellaneous Chronicles of
2673-405: Is also the intentional flooding of land that would otherwise remain dry. This may take place for agricultural, military, or river-management purposes. For example, agricultural flooding may occur in preparing paddy fields for the growing of semi-aquatic rice in many countries. Flooding may occur as an overflow of water from water bodies, such as a river , lake , sea or ocean. In these cases,
2772-419: Is common when heavy flows move uprooted woody vegetation and flood-damaged structures and vehicles, including boats and railway equipment. Recent field measurements during the 2010–11 Queensland floods showed that any criterion solely based upon the flow velocity, water depth or specific momentum cannot account for the hazards caused by velocity and water depth fluctuations. These considerations ignore further
2871-493: Is commonly caused by a combination of storm surges caused by winds and low barometric pressure and large waves meeting high upstream river flows. The intentional flooding of land that would otherwise remain dry may take place for agricultural, military or river-management purposes. This is a form of hydraulic engineering . Agricultural flooding may occur in preparing paddy fields for the growing of semi-aquatic rice in many countries. Flooding for river management may occur in
2970-400: Is controlled by the geometry of the flow channel and, especially, by depth of channel, speed of flow and amount of sediments in it Flow channel restrictions like bridges and canyons tend to control water elevation above the restriction. The actual control point for any given reach of the drainage may change with changing water elevation, so a closer point may control for lower water levels until
3069-420: Is expected to grow to 13.9 million by 2025. The population of the city is expanding faster than earlier predictions. In August 2017, the city's mayor, Nguyễn Thành Phong, admitted that previous estimates of 8–10 million were drastic underestimations. The actual population (including those who have not officially registered) was estimated 13 million in 2017. The Ho Chi Minh City Metropolitan Area ,
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3168-465: Is facing increasing threats of sea level rise and flooding as well as heavy strains on public infrastructures. The first known human habitation in the area was a Cham settlement called Baigaur. The Cambodians then took over the Cham village of Baigaur and renamed it Prey Nokor, a small fishing village. Over time, under the control of the Vietnamese, it was officially renamed Gia Định ( 嘉 定 ) in 1698,
3267-461: Is more significant to flooding within small drainage basins. The most important upslope factor in determining flood magnitude is the land area of the watershed upstream of the area of interest. Rainfall intensity is the second most important factor for watersheds of less than approximately 30 square miles or 80 square kilometres. The main channel slope is the second most important factor for larger watersheds. Channel slope and rainfall intensity become
3366-547: Is the most populous city in Vietnam , with a population of around 10 million in 2023. The city's geography is defined by rivers and canals, of which the largest is Saigon River . As a municipality , Ho Chi Minh City consists of 16 urban districts , five rural districts , and one municipal city (sub-city). As the largest financial centre in Vietnam, Ho Chi Minh City has the highest gross regional domestic product out of all Vietnam provinces and municipalities, contributing around
3465-581: Is well known in Khmer, whereas "Ho Chi Minh City" is used to refer to the whole city. The earliest settlement in the area was a Funan temple at the location of the current Phụng Sơn Buddhist temple, founded in the 4th century AD. A settlement called Baigaur was established on the site in the 11th century by the Champa . Baigaur was renamed Prey Nokor after conquest by the Khmer Empire around 1145, Prey Nokor grew on
3564-456: The 17th parallel ( Bến Hải River ), with the communist Việt Minh , under Ho Chi Minh , gaining complete control of the northern half of the country , while the southern half gained independence from France. The State officially became the Republic of Vietnam when Bảo Đại was deposed by his Prime Minister Ngô Đình Diệm in the 1955 referendum , with Saigon as its capital. On 22 October 1956,
3663-696: The Port of Saigon is among the busiest container ports in Southeast Asia . Ho Chi Minh City is also a tourist attraction. Some of the war and historic landmarks in the city include the Independence Palace , Landmark 81 (tallest building in Vietnam), the War Remnants Museum , and Bến Thành Market . The city is also known for its narrow walkable alleys and bustling night life . Currently, Ho Chi Minh City
3762-554: The Second World War ). Floods are caused by many factors or a combination of any of these generally prolonged heavy rainfall (locally concentrated or throughout a catchment area), highly accelerated snowmelt , severe winds over water, unusual high tides, tsunamis , or failure of dams, levees , retention ponds , or other structures that retained the water. Flooding can be exacerbated by increased amounts of impervious surface or by other natural hazards such as wildfires, which reduce
3861-685: The Vietnamese People's Army . In 1976, upon the establishment of the unified communist Socialist Republic of Vietnam, the city of Saigon (including the Cholon area), the province of Gia Ðịnh and two suburban districts of two other nearby provinces were combined to create Ho Chi Minh City, in honour of the late Communist leader Ho Chi Minh. At the time, the city covered an area of 1,295.5 square kilometres (500.2 sq mi) with eight districts and five rurals: Thủ Đức , Hóc Môn , Củ Chi , Bình Chánh , and Nhà Bè . Since 1978, administrative divisions in
3960-562: The water table is shallow, such as a floodplain , or from intense rain from one or a series of storms . Infiltration also is slow to negligible through frozen ground, rock, concrete , paving, or roofs. Areal flooding begins in flat areas like floodplains and in local depressions not connected to a stream channel, because the velocity of overland flow depends on the surface slope. Endorheic basins may experience areal flooding during periods when precipitation exceeds evaporation. Floods occur in all types of river and stream channels, from
4059-515: The 1960s, Saigon experienced economic downturn and high inflation, as it was completely dependent on U.S. aid and imports from other countries. As a result of widespread urbanisation, with the population reaching 3.3 million by 1970, the city was described by the USAID as being turned "into a huge slum". The city also suffered from "prostitutes, drug addicts, corrupt officials, beggars, orphans, and Americans with money", and according to Stanley Karnow , it
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4158-491: The 1990s, the city underwent rapid expansion and modernization, which contributed to Vietnam's post-war economic recovery and helped revive its international trade hub status. Ho Chi Minh City has a long tradition of being one of the centers of economy, entertainment and education in Vietnam. As such, the city is also the busiest international transport hub in Vietnam, as Tân Sơn Nhất International Airport accounts for nearly half of all international arrivals to Vietnam and
4257-519: The Chinese ( Hoa ) with 5.78%. Cholon – in District 5 and parts of Districts 6, 10, and 11 – is home to the largest Chinese community in Vietnam. The Hoa (Chinese) speak a number of varieties of Chinese , including Cantonese , Teochew (Chaozhou), Hokkien , Hainanese , and Hakka ; smaller numbers also speak Mandarin Chinese . Other ethnic minorities include Khmer with 0.34%, Cham with 0.1%, as well as
4356-666: The Communist Party is ranked second in the city politics after the Secretary of the Communist Party, while chairman of the People's Committee is ranked third and the chairman of the People's Council is ranked fourth. Sub-division units Dec. 2003 Area (km ) Dec. 2008 Population as of census 1 October 2004 Population as of census 1 April 2009 Population 2010 Population 2011 Population 2015 Population/km 2011 The population of
4455-925: The Pacified Frontier" ( 撫邊雜錄 , Phủ biên tạp lục c. 1776), wherein Lê relates that, in 1674, Cambodian prince Ang Nan was installed as uparaja in 柴棍 (Sài Gòn) by Vietnamese forces. 柴棍 also appears later in Trịnh Hoài Đức's "Comprehensive Records about the Gia Định Citadel" ( 嘉定城通志 , Gia Định thành thông chí , c. 1820), "Textbook on the Geography of the Southern Country" ( 南國地輿教科書 , Nam quốc địa dư giáo khoa thư , 1908), etc. Adrien Launay's Histoire de la Mission de Cochinchine (1688−1823), "Documents Historiques II: 1728 - 1771" (1924: 190 ) cites 1747 documents containing
4554-523: The Vietnamese source Phủ biên tạp lục (albeit written in literary Chinese) was the earliest extant one containing the local toponym's transcription; (2) 堤岸 has variant form 提岸 , thus suggesting that both were transcriptions of a local toponym and thus are cognates to, not originals of, Sài Gòn. Saigon is unlikely to be from 堤岸 since in "Textbook on the Geography of the Southern Country", it also lists Chợ Lớn as 𢄂𢀲 separate from 柴棍 Sài Gòn. The current official name, Thành phố Hồ Chí Minh ,
4653-687: The adverse ecological impact of the inundation. That impact may also be adverse in a hydrogeological sense if the inundation lasts a long time. Examples for uncontrolled inundations are the second Siege of Leiden during the first part of the Eighty Years' War , the flooding of the Yser plain during the First World War , and the Inundation of Walcheren , and the Inundation of the Wieringermeer during
4752-423: The amount of water damage and mold that grows after an incident. Research suggests that there will be an increase of 30–50% in adverse respiratory health outcomes caused by dampness and mold exposure for those living in coastal and wetland areas. Fungal contamination in homes is associated with increased allergic rhinitis and asthma. Vector borne diseases increase as well due to the increase in still water after
4851-453: The area, thus detaching the area from Cambodia, which was not strong enough to intervene. He is often credited with the expansion of Saigon into a significant settlement. King Chey Chettha IV of Cambodia tried to stop the Vietnamese but was defeated by Nguyễn 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
4950-407: The city centre and 16 m (52 ft) for the suburb areas. It borders Tây Ninh Province and Bình Dương Province to the north, Đồng Nai Province and Bà Rịa–Vũng Tàu province to the east, Long An Province to the west, Tiền Giang Province and South China Sea to the south with a coast 15 km (9 mi) long. The city covers an area of 2,095 km (809 sq mi) or 0.63% of
5049-414: The city had 4,344,000 labourers, of whom 130,000 are over the labour age norm (in Vietnam, 60 for male and 55 for female workers). In 2009, GDP per capita reached $ 2,800, compared to the country's average level of $ 1,042. Flood A flood is an overflow of water ( or rarely other fluids ) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to
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#17328510941565148-535: The city have been revised numerous times, most recently in 2020, when District 2 , District 9 , and Thủ Đức District were consolidated to form a municipal city . On 29 October 2002, 60 people died and 90 injured in the International Trade Center building fire in Ho Chi Minh City. Today, Ho Chi Minh City, along with its surrounding provinces, is described as "the manufacturing hub" of Vietnam, and "an attractive business hub". In terms of cost, it
5247-514: The city is the Ho Chi Minh City People's Council and consists of 105 members. The current chairwoman is Nguyễn Thị Lệ . The judiciary branch of the city is the Ho Chi Minh City People's Court. The current chief judge is Lê Thanh Phong . The executive committee of Communist Party of Ho Chi Minh City is the leading organ of the Communist Party in Ho Chi Minh City. The current secretary is Nguyễn Văn Nên . The permanent deputy secretary of
5346-409: The city was given the official name, Đô Thành Sài Gòn ("Capital City Saigon"). After the decree of 27 March 1959 came into effect, Saigon was divided into eight districts and 41 wards. In December 1966, two wards from old An Khánh Commune of Gia Định, were formed into District 1, then seceded shortly later to become District 9. In July 1969, District 10 and District 11 were founded, and by 1975,
5445-563: The city's area consisted of eleven districts, Gia Định , Củ Chi District ( Hậu Nghĩa ), and Phú Hòa District ( Bình Dương ). Saigon served as the financial, industrial and transport centre of the Republic of Vietnam. In the late 1950s, with the U.S. providing nearly $ 2 billion in aid to the Diệm regime, the country's economy grew rapidly under capitalism ; by 1960, over half of South Vietnam's factories were located in Saigon. However, beginning in
5544-435: The city, as of the 1 October 2004 census, was 6,117,251 (of which 19 inner districts had 5,140,412 residents and 5 suburban districts had 976,839 inhabitants). In mid-2007, the city's population was 6,650,942 – with the 19 inner districts home to 5,564,975 residents and the five suburban districts containing 1,085,967 inhabitants. The result of the 2009 Census shows that the city's population was 7,162,864 people, about 8.34% of
5643-410: The city, in protest of the Diệm regime. On 1 November of the same year, Diệm was assassinated in Saigon, in a successful coup by Dương Văn Minh . During the 1968 Tet Offensive , communist forces launched a failed attempt to capture the city . Seven years later, on 30 April 1975, Saigon was captured , ending the Vietnam War with a victory for North Vietnam, and the city came under the control of
5742-479: The city. A once-in-100 year flood would cause 23% of the city to suffer flooding. The city has a tropical climate , specifically tropical savanna ( Aw ), with a high average humidity of 78–82%. The year is divided into two distinct seasons. The rainy season, with an average rainfall of about 1,800 mm (71 in) annually (about 150 rainy days per year), usually lasts from May to November. The dry season lasts from December to April. The average temperature
5841-434: The deadliest floods worldwide, showing events with death tolls at or above 100,000 individuals. Floods (in particular more frequent or smaller floods) can also bring many benefits, such as recharging ground water , making soil more fertile and increasing nutrients in some soils. Flood waters provide much needed water resources in arid and semi-arid regions where precipitation can be very unevenly distributed throughout
5940-472: The fall of the Citadel of Saigon , the city became the capital of French Indochina from 1887 to 1902, and again from 1945 until its cessation in 1954. Following the partition of French Indochina , it became the capital of South Vietnam until it was captured by North Vietnam , who renamed the city after their former leader Hồ Chí Minh , though the former name is still widely used in informal usages. Beginning in
6039-563: The field that is intended to impede the movement of the enemy. This may be done both for offensive and defensive purposes. Furthermore, in so far as the methods used are a form of hydraulic engineering, it may be useful to differentiate between controlled inundations and uncontrolled ones. Examples for controlled inundations include those in the Netherlands under the Dutch Republic and its successor states in that area and exemplified in
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#17328510941566138-470: The flood process; before, during and after. During floods accidents occur with falling debris or any of the many fast moving objects in the water. After the flood rescue attempts are where large numbers injuries can occur. Communicable diseases are increased due to many pathogens and bacteria that are being transported by the water .There are many waterborne diseases such as cholera , hepatitis A , hepatitis E and diarrheal diseases , to mention
6237-492: The flood thus advances more slowly than later and higher flows. As a result, the rising limb of the hydrograph becomes ever quicker as the flood moves downstream, until the flow rate is so great that the depletion by wetting soil becomes insignificant. Coastal areas may be flooded by storm surges combining with high tides and large wave events at sea, resulting in waves over-topping flood defenses or in severe cases by tsunami or tropical cyclones. A storm surge , from either
6336-403: The floods have settled. The diseases that are vector borne are malaria , dengue , West Nile , and yellow fever . Floods have a huge impact on victims' psychosocial integrity . People suffer from a wide variety of losses and stress . One of the most treated illness in long-term health problems are depression caused by the flood and all the tragedy that flows with one. Below is a list of
6435-428: The flow rate exceeds the capacity of the river channel , particularly at bends or meanders in the waterway . Floods often cause damage to homes and businesses if these buildings are in the natural flood plains of rivers. People could avoid riverine flood damage by moving away from rivers. However, people in many countries have traditionally lived and worked by rivers because the land is usually flat and fertile . Also,
6534-641: The form of diverting flood waters in a river at flood stage upstream from areas that are considered more valuable than the areas that are sacrificed in this way. This may be done ad hoc , or permanently, as in the so-called overlaten (literally "let-overs"), an intentionally lowered segment in Dutch riparian levees, like the Beerse Overlaat in the left levee of the Meuse between the villages of Gassel and Linden, North Brabant . Military inundation creates an obstacle in
6633-501: The inflow of the tide . Floods are of significant concern in agriculture , civil engineering and public health . Human changes to the environment often increase the intensity and frequency of flooding. Examples for human changes are land use changes such as deforestation and removal of wetlands , changes in waterway course or flood controls such as with levees . Global environmental issues also influence causes of floods, namely climate change which causes an intensification of
6732-403: The land in quantities that cannot be carried within stream channels or retained in natural ponds, lakes, and human-made reservoirs . About 30 percent of all precipitation becomes runoff and that amount might be increased by water from melting snow. River flooding is often caused by heavy rain, sometimes increased by melting snow. A flood that rises rapidly, with little or no warning, is called
6831-608: The livelihood of individuals. As a result, there is also significant socio-economic threats to vulnerable populations around the world from flooding. For example, in Bangladesh in 2007, a flood was responsible for the destruction of more than one million houses. And yearly in the United States, floods cause over $ 7 billion in damage. Flood waters typically inundate farm land, making the land unworkable and preventing crops from being planted or harvested, which can lead to shortages of food both for humans and farm animals. Entire harvests for
6930-417: The location of the flood. Damage to roads and transport infrastructure may make it difficult to mobilize aid to those affected or to provide emergency health treatment. Flooding can cause chronically wet houses, leading to the growth of indoor mold and resulting in adverse health effects, particularly respiratory symptoms. Respiratory diseases are a common after the disaster has occurred. This depends on
7029-436: The loss of power. This includes loss of drinking water treatment and water supply, which may result in loss of drinking water or severe water contamination. It may also cause the loss of sewage disposal facilities. Lack of clean water combined with human sewage in the flood waters raises the risk of waterborne diseases , which can include typhoid , giardia , cryptosporidium , cholera and many other diseases depending upon
7128-469: The main Cambodian army at Bích Đôi citadel, king Chey Chettha IV took flight while his nephew Ang Em surrendered to the invaders, as the Vietnamese marched onto and captured Cambodia's capital Phnom Penh . As a result, Saigon and Long An were officially and securely obtained by the Nguyễn, more Vietnamese settlers moved into the new conquered lands. In 1788, Nguyễn Ánh captured the city, and used it as
7227-476: The people of the two countries could freely move back and forth. In exchange, Chey Chettha II gifted Prei Nokor to the Nguyễn lords . Vietnamese settlers began to migrate to the area of Saigon, Đồng Nai. Before that, the Funanese, Khmer, and Cham had lived there, scattered from time immemorial. The period from 1623 to 1698 is considered the period of the formation of later Saigon. In 1623, Lord Nguyen sent
7326-457: The period of time between observations. This intensity will be less than the actual peak intensity if the duration of the rainfall event was less than the fixed time interval for which measurements are reported. Convective precipitation events (thunderstorms) tend to produce shorter duration storm events than orographic precipitation. Duration, intensity, and frequency of rainfall events are important to flood prediction. Short duration precipitation
7425-549: The rest are the Saigonese who don't believe in God which is Atheism . The city is the economic center of Vietnam and accounts for a large proportion of the economy of Vietnam . Although the city takes up just 0.6% of the country's land area, it contains 8.34% of the population of Vietnam, 20.2% of its GDP, 27.9% of industrial output and 34.9% of the FDI projects in the country in 2005. In 2005,
7524-569: The result of sustained rainfall, rapid snow melt, monsoons , or tropical cyclones . However, large rivers may have rapid flooding events in areas with dry climates, since they may have large basins but small river channels, and rainfall can be very intense in smaller areas of those basins. In extremely flat areas, such as the Red River Valley of the North in Minnesota , North Dakota , and Manitoba ,
7623-480: The risks associated with large debris entrained by the flow motion. Floods can be a huge destructive power. When water flows, it has the ability to demolish all kinds of buildings and objects, such as bridges, structures, houses, trees, and cars. Economical, social and natural environmental damages are common factors that are impacted by flooding events and the impacts that flooding has on these areas can be catastrophic. There have been numerous flood incidents around
7722-454: The rivers provide easy travel and access to commerce and industry. Flooding can damage property and also lead to secondary impacts. These include in the short term an increased spread of waterborne diseases and vector-bourne disesases , for example those diseases transmitted by mosquitos. Flooding can also lead to long-term displacement of residents. Floods are an area of study of hydrology and hydraulic engineering . A large amount of
7821-497: The shore areas. Extreme flood events often result from coincidence such as unusually intense, warm rainfall melting heavy snow pack, producing channel obstructions from floating ice, and releasing small impoundments like beaver dams. Coincident events may cause extensive flooding to be more frequent than anticipated from simplistic statistical prediction models considering only precipitation runoff flowing within unobstructed drainage channels. Debris modification of channel geometry
7920-522: The site of a small fishing village and area of forest. The first Vietnamese people crossed the sea to explore this land completely without the organisation of the Nguyễn Lords . Thanks to the marriage between Princess Nguyễn Phúc Ngọc Vạn - daughter of Lord Nguyễn Phúc Nguyên - and the King of Cambodia Chey Chettha II in 1620, the relationship between Vietnam and Cambodia became smooth, and
8019-538: The smallest ephemeral streams in humid zones to normally-dry channels in arid climates to the world's largest rivers. When overland flow occurs on tilled fields, it can result in a muddy flood where sediments are picked up by run off and carried as suspended matter or bed load . Localized flooding may be caused or exacerbated by drainage obstructions such as landslides , ice , debris , or beaver dams. Slow-rising floods most commonly occur in large rivers with large catchment areas . The increase in flow may be
8118-527: The supply of vegetation that can absorb rainfall. During times of rain, some of the water is retained in ponds or soil, some is absorbed by grass and vegetation, some evaporates, and the rest travels over the land as surface runoff . Floods occur when ponds, lakes, riverbeds, soil, and vegetation cannot absorb all the water. This has been exacerbated by human activities such as draining wetlands that naturally store large amounts of water and building paved surfaces that do not absorb any water. Water then runs off
8217-509: The surface of Vietnam), extending up to Củ Chi District (12 mi or 19 km from the Cambodian border) and down to Cần Giờ on the Eastern Sea. The distance from the northernmost point (Phú Mỹ Hưng Commune, Củ Chi District ) to the southernmost one (Long Hòa Commune, Cần Giờ District) is 102 km (63 mi), and from the easternmost point ( Long Bình ward , District Nine) to the westernmost one (Bình Chánh Commune, Bình Chánh District)
8316-440: The third most important factors for small and large watersheds, respectively. Time of Concentration is the time required for runoff from the most distant point of the upstream drainage area to reach the point of the drainage channel controlling flooding of the area of interest. The time of concentration defines the critical duration of peak rainfall for the area of interest. The critical duration of intense rainfall might be only
8415-524: The toponyms: provincia Rai-gon, Rai-gon thong (for *Sài Gòn thượng "Upper Saigon"), & Rai-gon-ha (for *Sài Gòn hạ "Lower Saigon"). It is probably a transcription of Khmer ព្រៃនគរ (Prey Nokôr) , or Khmer ព្រៃគរ (Prey Kôr). The proposal that Sài Gòn is from non-Sino-Vietnamese reading of Chinese 堤岸 (“embankment”, tai4 ngon6 , SV: đê ngạn) , the Cantonese name of Chợ Lớn , (e.g. by Vương Hồng Sển) has been critiqued as folk-etymological, as: (1)
8514-492: The total population of Vietnam, making it the highest population-concentrated city in the country. As of the end of 2012, the total population of the city was 7,750,900 people, an increase of 3.1% from 2011. As an administrative unit, its population is also the largest at the provincial level. According to the 2019 census, Ho Chi Minh City has a population of over 8.9 million within the city proper and over 21 million within its metropolitan area . The city's population
8613-669: The two Hollandic Water Lines , the Stelling van Amsterdam , the Frisian Water Line , the IJssel Line , the Peel-Raam Line , and the Grebbe line in that country. To count as controlled , a military inundation has to take the interests of the civilian population into account, by allowing them a timely evacuation , by making the inundation reversible , and by making an attempt to minimize
8712-565: The two predominant religions in Ho Chi Minh City. The largest is Buddhism as it has 1,164,930 followers followed by Catholicism with 745,283 followers, Caodaism with 31,633 followers, Protestantism with 27,016 followers, Islam with 6,580 followers, Hòa Hảo with 4,894 followers, Tịnh độ cư sĩ Phật hội Việt Nam with 1,387 followers, Hinduism with 395 followers, Đạo Tứ ấn hiếu nghĩa with 298 followers, Minh Sư Đạo with 283 followers, Baháʼí Faith with 192 followers, Bửu Sơn Kỳ Hương with 89 followers, Minh Lý Đạo with 67 followers, and
8811-441: The water cycle and sea level rise . For example, climate change makes extreme weather events more frequent and stronger. This leads to more intense floods and increased flood risk. Natural types of floods include river flooding, groundwater flooding coastal flooding and urban flooding sometimes known as flash flooding. Tidal flooding may include elements of both river and coastal flooding processes in estuary areas. There
8910-487: The water overtops or breaks levees , resulting in some of that water escaping its usual boundaries. Flooding may also occur due to an accumulation of rainwater on saturated ground. This is called an areal flood . The size of a lake or other body of water naturally varies with seasonal changes in precipitation and snow melt. Those changes in size are however not considered a flood unless they flood property or drown domestic animals . Floods can also occur in rivers when
9009-515: The waters in a flood are very deep and have strong currents . Deaths do not just occur from drowning, deaths are connected with dehydration , heat stroke , heart attack and any other illness that needs medical supplies that cannot be delivered. Injuries can lead to an excessive amount of morbidity when a flood occurs. Injuries are not isolated to just those who were directly in the flood, rescue teams and even people delivering supplies can sustain an injury. Injuries can occur anytime during
9108-450: The world which have caused devastating damage to infrastructure, the natural environment and human life. Floods can have devastating impacts to human societies. Flooding events worldwide are increasing in frequency and severity, leading to increasing costs to societies. Catastrophic riverine flooding can result from major infrastructure failures, often the collapse of a dam . It can also be caused by drainage channel modification from
9207-557: The world's population lives in close proximity to major coastlines , while many major cities and agricultural areas are located near floodplains . There is significant risk for increased coastal and fluvial flooding due to changing climatic conditions. Floods can happen on flat or low-lying areas when water is supplied by rainfall or snowmelt more rapidly than it can either infiltrate or run off . The excess accumulates in place, sometimes to hazardous depths. Surface soil can become saturated, which effectively stops infiltration, where
9306-593: Was "a black-market city in the largest sense of the word". On 28 April 1955, the Vietnamese National Army launched an attack against Bình Xuyên military force in the city. The battle lasted until May, killing an estimated 500 people and leaving about 20,000 homeless. Ngô Đình Diệm then later turned on other paramilitary groups in Saigon, including the Hòa Hảo Buddhist reform movement. On 11 June 1963, Buddhist monk Thích Quảng Đức burned himself in
9405-491: Was announced that District 2 , District 9 and Thủ Đức District would be consolidated and was approved by Standing Committee of the National Assembly . The Ho Chi Minh City People's Committee is a 13-member executive branch of the city. The current chairman is Phan Văn Mãi . There are several vice chairmen and chairwomen on the committee with responsibility over various city departments. The legislative branch of
9504-480: Was built in 1836. In 1859, the citadel was destroyed by the French following the Battle of Kỳ Hòa . Initially called Gia Định, the Vietnamese city became Saigon in the 18th century. Ceded to France by the 1862 Treaty of Saigon , the city was planned by the French to transform into a large town for colonization. During the late 19th and early 20th centuries, construction of various French-style buildings began, including
9603-430: Was first proclaimed in 1945, and later adopted in 1976. It is abbreviated as TP.HCM, and translated in English as Ho Chi Minh City , abbreviated as HCMC, and in French as Hô-Chi-Minh-Ville (the circumflex is sometimes omitted), abbreviated as HCMV. The name commemorates Ho Chi Minh , the first leader of North Vietnam . This name, though not his given name, was one he favored throughout his later years. It combines
9702-765: Was heavy, a fast snowmelt can push water out of the banks of a tributary river so that it moves overland, to a point further downstream in the river or completely to another streambed. Overland flooding can be devastating because it is unpredictable, it can occur very suddenly with surprising speed, and in such flat land it can run for miles. It is these qualities that set it apart from simple "overland flow". Rapid flooding events, including flash floods , more often occur on smaller rivers, rivers with steep valleys, rivers that flow for much of their length over impermeable terrain, or normally-dry channels. The cause may be localized convective precipitation (intense thunderstorms ) or sudden release from an upstream impoundment created behind
9801-487: Was ranked the 111th-most expensive major city in the world according to a 2020 survey of 209 cities. In terms of international connectedness, as of 2020, the city was classified as a "Beta" city by the Globalization and World Cities Research Network . The city is located in the south-eastern region of Vietnam, 1,760 km (1,090 mi) south of Hanoi . The average elevation is 5 m (16 ft) above sea level for
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