Integrated urban flood risk management approach in context of uncertainties: case study Ho Chi Minh city

Ho, Long Phi; Nguyen, Thong; Quang, Chau Nguyen Xuan; Nguyen, Kim Dan

doi:10.1051/lhb/2014059

Cited by 9 publications

(5 citation statements)

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“…Interestingly, these fluctuations are not correlated to precipitations and could partially explain the deficit in net water discharge compared to precipitation. We suspect these fluctuations to be a consequence of the peak flow season of the Mekong River, which occurs in October in coastal floodplain and could influence sea water levels next to its river mouth (Chen et al, 2012a;Ho et al, 2014;Thi Ha et al, 2018).…”

Section: Residual Dischargementioning

confidence: 99%

“…Results from Scussolini et al (2017) showed the influence of the sea level on HCMC flood risk. Ho et al (2014) argued that main hydrological explanations for the flood risk on HCMC area are the upstream floods including those of the Dong Nai and Mekong delta, local rainfall, land subsidence, and sea level rise. Our results indicate that local rainfall and sea water level may be the most impacting factors.…”

Section: Effects Of Long-term Precipitationmentioning

confidence: 99%

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Monitoring discharge in a tidal river using water level observations: Application to the Saigon River, Vietnam

Camenen

Gratiot

Cohard³

et al. 2021

Science of The Total Environment

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The hydrological dynamics of the Saigon River is ruled by a complex combination of factors, which need to be disentangled to prevent and limit risks of flooding and salt intrusion. In particular, the Saigon water discharge is highly influenced by tidal cycles with a relatively low net discharge. This study proposes a low-cost technique to estimate river discharge at high frequency (every 10 minutes in this study). It is based on a stage-fall-discharge (SFD) rating curve adapted from the general Manning Strickler law, and calibrated thanks to two ADCP campaigns. Two pressure sensors were placed at different locations of the river in September 2016: one at the centre of Ho Chi Minh City and one in Phu Cuong, 40 km upstream approximately. The instantaneous water discharge data were used to evaluate the net residual discharge and to highlight seasonal and inter-annual trends. Both water

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Section: Residual Dischargementioning

confidence: 99%

Section: Effects Of Long-term Precipitationmentioning

confidence: 99%

Monitoring discharge in a tidal river using water level observations: Application to the Saigon River, Vietnam

Camenen

Gratiot

Cohard³

et al. 2021

Science of The Total Environment

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“…Toutefois, à l'échelle journalière et locale, une nette augmentation interannuelle a été observée pour les précipitations quotidiennes supérieures au seuil de 50 mm/jour. Cette augmentation apparaît clairement dans l'illustration 2 (Ho et al, 2014) et se traduit par une modification des statistiques : l'occurrence d'un événement de 100 mm est passée d'une fois tous les cinq ans à une fois par an au cours de cette période. En outre la forte croissance démographique entraine une très forte demande en eau, satisfaite en grande partie par l'augmentation des pompages.…”

Section: Tendances Et Impactsunclassified

Ho Chi Minh Ville, des inondations à la submersion…

Vachaud¹,

Gratiot²,

Ngoc³

2020

echogeo

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La plus grande partie des méga cités du Sud Est Asiatique situées en bordure littorale sont sujettes d’une part à une très forte croissance démographique, d’autre part à un accroissement des risques d’inondations résultant d’une conjonction entre développement urbain mal maitrisé, augmentation de l’intensité des pluies de mousson, élévation du niveau océanique et affaissement du niveau du sol (subsidence). Ho Chi Minh Ville est un exemple typique de cette situation qui peut conduire à moyen-court terme à la submersion de la majorité des quartiers récents construits sur d’anciennes zones de marais ou de rizière. Il est donc essentiel de mettre en œuvre des stratégies de gestion des risques adaptées et de développer le territoire de manière durable.

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“…In recent years, a number of projects have directed their focus to the issues arising in HCMC due to flood stress (e.g., Asian Development Bank, 2010; Dahm et al, 2013;FIM, 2013a;Ho et al, 2014Ho et al, , 2015Webster & McElwee, 2009;World Bank, 2010). Regarding the future, projections of SLR in the HCMC region are slightly higher than the global mean (IPCC, 2013, Jevrejeva et al, 2014.…”

Section: Introductionmentioning

confidence: 99%

Adaptation to Sea Level Rise: A Multidisciplinary Analysis for Ho Chi Minh City, Vietnam

Scussolini

Tran

Koks

et al. 2017

Water Resources Research

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One of the most critical impacts of sea level rise is that flooding suffered by ever larger settlements in tropical deltas will increase. Here we look at Ho Chi Minh City, Vietnam, and quantify the threats that coastal floods pose to safety and to the economy. For this, we produce flood maps through hydrodynamic modeling and, by combining these with data sets of exposure and vulnerability, we estimate two indicators of risk: the damage to assets and the number of potential casualties. We simulate current and future (2050 and 2100) flood risk using IPCC scenarios of sea level rise and socioeconomic change. We find that annual damage may grow by more than 1 order of magnitude, and potential casualties may grow 5–20‐fold until the end of the century, in the absence of adaptation. Impacts depend strongly on the climate and socioeconomic scenarios considered. Next, we simulate the implementation of adaptation measures and calculate their effectiveness in reducing impacts. We find that a ring dike would protect the inner city but increase risk in more rural districts, whereas elevating areas at risk and dryproofing buildings will reduce impacts to the city as a whole. Most measures perform well from an economic standpoint. Combinations of measures seem to be the optimal solution and may address potential equity conflicts. Based on our results, we design possible adaptation pathways for Ho Chi Minh City for the coming decades; these can inform policy‐making and strategic thinking.

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Integrated urban flood risk management approach in context of uncertainties: case study Ho Chi Minh city

Cited by 9 publications

References 0 publications

Monitoring discharge in a tidal river using water level observations: Application to the Saigon River, Vietnam

Monitoring discharge in a tidal river using water level observations: Application to the Saigon River, Vietnam

Ho Chi Minh Ville, des inondations à la submersion…

Adaptation to Sea Level Rise: A Multidisciplinary Analysis for Ho Chi Minh City, Vietnam

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