Evaluating the Saltwater Intrusion to Aquifer Upper-Middle Pleistocene (qp2–3) in Coastal Area of Tra Vinh Province Due to Groundwater Exploitation

Hiep, Huynh Van; Long, P.

doi:10.1007/978-981-10-7149-2_46

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…In Can Tho city, groundwater exists in the pores of unconsolidated Cainozoic sediments with the different hydrographic geological units, including Holocene (qh), Upper Pleistocene (qp 3 ) and Upper-middle Pleistocene (qp 2-3 ). In the Holocene aquifer known as a source to recharge deeper aquifers, the groundwater level is stable, ranging from 0.1 to 1.6 m from the ground surface, with an average thickness of 25.4 m. Therefore, the seasonal changes in quantity and quality of water in the Holocene aquifer may be influenced by different recharge sources, such as rainfall and surface water [25].…”

Section: Study Areamentioning

confidence: 99%

Evaluation of groundwater level, quality and recharge: a case study of Can Tho City, Viet Nam

Minh

Tỷ

Trinh

et al. 2023

Vietnam J. Sci. Technol.

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This study evaluated the groundwater levels (GWLs) and groundwater quality of Can Tho city (CTC) using statistical analysis and a Groundwater Quality Index (GWQI). In addition, the groundwater recharge potential from rainfall was investigated for the period 2001-2009. The results show that GWLs decreased rapidly in the period 2000-2010 and gradually in the period 2012-2018 in both the Middle-upper Pleistocene (qp2-3) and Upper Pleistocene (qp3) aquifers. This is due to excessive withdrawals, especially to meet the demands of production facilities in the city’s industrial zones. In this regard, Decree No. 2946/UBND-KT of the People’s Committee of CTC was issued and enacted in 2012, which resulted in a marked reduction in withdrawals and contributed to GWL stabilization. Groundwater quality in CTC was found to be mainly affected by coliform in both dry and wet seasons. However, groundwater quality improved during the wet season with the dilution of rainfall, as shown by the GWQI values. In addition to groundwater recharge from rainfall, other socio-economic factors such as urbanization, industrialization, and the influence of the Bassac River on recharge potentials should be further investigated.

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Section: Study Areamentioning

confidence: 99%

Evaluation of groundwater level, quality and recharge: a case study of Can Tho City, Viet Nam

Minh

Tỷ

Trinh

et al. 2023

Vietnam J. Sci. Technol.

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“…So excessive groundwater extraction for different usages is a serious problem in Mekong Delta, especially in Tra Vinh province which is a typically coastal province of Vietnam in Mekong Delta (Minh 2014). The abstraction of groundwater volume is about 347,793m3/d in 2016 in Tra Vinh, it could increase in the future (Van 2017, Van Hiep 2018.…”

Section: Research Sitementioning

confidence: 99%

Sensitivity analysis of Seawater intrusion model in Tra Vinh province, Mekong Delta

Xie

2021

Preprint

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Seawater intrusion into coastal aquifers is a serious problem, leading to shortage of water supply in Tra Vinh province which is a typical coastal province in Mekong Delta Vietnam. One of the main reason for salinity intrusion is excessive abstraction from groundwater. In addition, climate change is an uncertain challenge which may affect the situation in the future. GMS groundwater modelling is an effective tool to simulate groundwater flow and salinity transport processes in this research. A conceptual and numerical model were built and calibrated to simulate groundwater flow in the case study area located in Tra Vinh with the use of hydraulic head data accumulated in the period 2006 to 2017, a sensitive analysis has been conducted on hydraulic conductivities, specific storage and conductance of boundary condition in order to understand model behaviour. Model results show that groundwater is overexploited in Tra Vinh province. Groundwater levels were continuously decreased in the whole area and in all aquifers. Groundwater recharge is limited due to impermeable layers on surface and is recharge is only possible in sand dune areas. Groundwater abstraction supplies domestic water demand which is much more than recharge. The sensitivity analysis shows that hydraulic conductivity is the most sensitive factor impacting the vales of the groundwater heads. Hydraulic conductance of the boundary is the most sensitive parameter under the head-dependent flow boundary, and hydraulic conductivity is the least sensitive parameter. However, specific storage is more sensitive to impact the values of change of storage. Thus, Boundary conductance, hydraulic conductivity and specific storage coefficient are important parameters for the accuracy of the model results. Saline groundwater occurs in the coastal zone and in the north area. Saltwater intrusion occurs in these area. The salinity data availability is too limited to provide a clear description of salinity distribution in the area.

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Design of preliminary groundwater monitoring networks for the coastal Tra Vinh province in Mekong Delta, Vietnam

Tuấn

Zhou

Stigter

et al. 2023

Journal of Hydrology: Regional Studies

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Evaluating the Saltwater Intrusion to Aquifer Upper-Middle Pleistocene (qp2–3) in Coastal Area of Tra Vinh Province Due to Groundwater Exploitation

Cited by 3 publications

References 3 publications

Evaluation of groundwater level, quality and recharge: a case study of Can Tho City, Viet Nam

Evaluation of groundwater level, quality and recharge: a case study of Can Tho City, Viet Nam

Sensitivity analysis of Seawater intrusion model in Tra Vinh province, Mekong Delta

Design of preliminary groundwater monitoring networks for the coastal Tra Vinh province in Mekong Delta, Vietnam

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