Assessment of Secure Exploitation Reserve of Groundwater Source in Camau Peninsula, Vietnam

Tinh, Nguyen Dang; Le, Phan Thai; Thanh, Dong Uyen; Quynh, Nguyen Ngoc; Chan, Ngo Duc

doi:10.26502/jesph.96120081

Cited by 1 publication

(2 citation statements)

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“…Ha Quang Khai et al, 2021 [4] pointed out that saline groundwater is widely observed in aquifer systems by spatial analysis of TDS (Total Dissolved Solid) data and wells in the study area have to be carefully installed by vertical seepage of saline groundwater from shallow aquifers. Nguyen Dang Tinh et al, 2020 estimated that the secure fresh groundwater exploitable reserve for the n2 2 aquifer in the Ca Mau Peninsula area is 130,684 m 3 /day [6]. However, according to statistics from the Division of Water Resources Planning and Investigation of Southern Vietnam (DWRPIS, 2013), the groundwater withdrawals reached 166,470 m 3 /day for the n2 2 aquifer in the study location.…”

Section: Introductionmentioning

confidence: 89%

“…The CMP's hydrogeological units are divided into 7 main aquifers [6] including aquifers of Holocene (qh), Upper Pleistocene (qp3), Upper Middle Pleistocene (qp2-3), Lower Pleistocene (qp1), Upper Pliocene (n2 2 ), Lower Pliocene (n2 1 ), and Upper Miocene (n1 3 ). The Upper-Middle Pleistocene aquifer (qp2-3) is the highest exploited aquifer in the domain with a high groundwater withdrawal of 727,593 m 3 /day.…”

Section: Geological and Hydrogeological Unitsmentioning

confidence: 99%

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Use of hydrogeochemical tools to evaluate seawater intrusion: a case study of Upper Pliocene Aquifer in the Ca Mau Peninsula, Vietnam

Van,

Thang

2023

IOP Conf. Ser.: Earth Environ. Sci.

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Groundwater resources have been withdrawn significantly to meet the demands of agricultural economic development in the Ca Mau Peninsula, Mekong River Delta. As a result, aquifers face the risk of groundwater levels decline and high salinization potential. This study uses the groundwater quality index (GQI) and hydrochemical facies evolution diagram (HFE-D) to assess the hydrochemical characteristics and salinization potential of the Upper Pliocene aquifer (n2 2), which is one of the two most exploited aquifers in the Mekong River Delta. A total of 6 monitoring wells were used to observe groundwater level and water quality from 2017 to 2020. The GQI results ranged from 33.38 to 75.61, indicating that groundwater in Hau Giang and Soc Trang areas is salinized. The spatial distribution results of HFE-D stated that the boundaries of intrusion and freshening have varied in space and time. Specifically, the Upper Pliocene aquifer has been in the process of seawater intrusion. The freshwater area in the Ca Mau has been gradually shrinking in the East Sea area faster than the West Sea area. The displacement speed of the intrusion and freshening boundary varied considerably from 0.04 to 0.67 km/year from 2017 to 2020.

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Section: Introductionmentioning

confidence: 89%

Section: Geological and Hydrogeological Unitsmentioning

confidence: 99%