Groundwater recharge in suburban areas of Hanoi, Vietnam: effect of decreasing surface-water bodies and land-use change

Kuroda, Keisuke; Hayashi, Takeshi; Thuan, An; Cảnh, Vũ Đức; Nga, Tran Thi Viet; Funabiki, Ayako; Takizawa, Satoshi

doi:10.1007/s10040-016-1528-2

Cited by 23 publications

(6 citation statements)

References 35 publications

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“…In addition to the survey completed, we also compiled a comprehensive data set for representative end‐member stable isotopic values with precipitation isotopic values collected and determined in 2003 and 2004 at the Institute of Nuclear Science and Technology in Hanoi, precipitation and river values given by the Global Networks of Isotopes in Precipitation, and Global Networks of Isotopes in Rivers retrieved through the Water Isotope System for Data Analysis, Visualization and Electronic Retrieval database, and previously published studies in the Red River Delta near Hanoi (Berg et al, ; Dang et al, ; Kuroda, Hayashi, Do, et al, ; Postma et al, ; Stahl et al, ). Precipitation data for August 2016 to October 2017 were obtained from Precipitation Estimation from Remotely Sensed Information using Artificial Neural Networks system from the University of California Irvine Center for Hydrometeorology and Remote Sensing, which quantifies rainfall rate via remote sensing (Maggioni et al, ).…”

Section: Methodsmentioning

confidence: 99%

“…From relationships and analysis of variance against modeled fraction recharge, we examine how differences in the hydrology and recharge sources affect arsenic concentrations, and how human perturbations to the aquifer system caused by urban pumping and irrigation are affecting recharge source and groundwater quality. Differentiating these recharge sources could be important in characterizing aquifer redox status, as recharge from both pond and rivers sources can both enhance arsenic release (Kuroda, Hayashi, Do, et al, ; Majumder et al, ; Stahl et al, ; van Geen et al, ; Xie et al, ). We expect that groundwater contains a large fraction of riverine recharge that results in different redox processes contributing varying amounts of DOC and a heterogeneous signature in sulfate that ultimately affects water quality.…”

Section: Introductionmentioning

confidence: 99%

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Quantifying Riverine Recharge Impacts on Redox Conditions and Arsenic Release in Groundwater Aquifers Along the Red River, Vietnam

Nghiem

Stahl

Mailloux

et al. 2019

Water Resources Research

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Widespread contamination of groundwater with geogenic arsenic is attributed to microbial dissolution of arsenic‐bearing iron (oxyhydr)oxides minerals coupled to the oxidation of organic carbon. The recharge sources to an aquifer can influence groundwater arsenic concentrations by transport of dissolved arsenic or reactive constituents that affect arsenic mobilization. To understand how different recharge sources affect arsenic contamination—in particular through their influence on organic carbon and sulfate cycling—we delineated and quantified recharge sources in the arsenic affected region around Hanoi, Vietnam. We constrained potential end‐member compositions and employed a novel end‐member mixing model using an ensemble approach to apportion recharge sources. Groundwater arsenic and dissolved organic carbon concentrations are controlled by the dominant source of recharge. High arsenic concentrations are prevalent regardless of high dissolved organic carbon or ammonium levels, indicative of organic matter decomposition, where the dominant recharge source is riverine. In contrast, high dissolved organic carbon and significant organic matter decomposition are required to generate elevated groundwater arsenic where recharge is largely nonriverine. These findings suggest that in areas of riverine recharge, arsenic may be efficiently mobilized from reactive surficial environments and carried from river‐aquifer interfaces into groundwater. In groundwaters derived from nonriverine recharge areas, significantly more organic carbon mineralization is required to obtain equivalent levels of arsenic mobilization within inland sediments. This method can be broadly applied to examine the connection between hydrology, geochemistry and groundwater quality.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quantifying Riverine Recharge Impacts on Redox Conditions and Arsenic Release in Groundwater Aquifers Along the Red River, Vietnam

Nghiem

Stahl

Mailloux

et al. 2019

Water Resources Research

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“…For sustainable water resources management in urban areas knowledge about groundwater recharge rates and expected changes under increasing urbanization is the very basis (Kuroda et al, 2017). However, no consistency about these changes can be found in the literature (Bhaskar et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Impact of urbanization on groundwater recharge rates in Dübendorf, Switzerland

Minnig

Moeck

Radny

et al. 2018

Journal of Hydrology

118

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Groundwater, as the world's most important reserve of available fresh water, is known to be affected by urbanization. Managing this resource in a sustainable way is critical for water resource management. Groundwater recharge rates in urban areas remain however still poorly understood and under-researched and knowledge about these rates and their expected changes under increasing urbanization is therefore of primary importance. This study aims to give insight into urban groundwater recharge by performing water budget calculations for four different time periods for an urban study site in northern Switzerland. In order to take into account uncertainty in parameter values a Monte Carlo (MC) approach was carried out. Our study highlights a strong positive correlation between groundwater recharge rates and the extent of the urban area. In detail, at the study site urban areas expanded from 6% in 1880 to 44% in 2009, leading to an increase in the mean groundwater recharge rate. However, the increase amount in recharge remains uncertain and varies between 29% and 67% depending on the parameter combination originating from the MC approach. Based on our water budget calculations, the transformation of natural landscapes into impervious areas leads to an increase in groundwater recharge rates due to the reduction of evapotranspiration that more than compensates for the increase in runoff. Furthermore, water main leakages contribute to an increase in recharge rates. Overall, we demonstrate that a better understanding of groundwater recharge changes in urban areas is required to move towards a sustainable water management. We hope that this example will encourage the hydrogeological community to pay more attention to urban groundwater recharge. Highlights • Urban groundwater recharge rate assessment through water budget calculations • Urbanization leads to a reduction of evapotranspiration • Water leakages contribute to recharge rates increase (up to 10% at the study site) • Increasing groundwater recharge rates due to urbanization at Dübendorf, Switzerland

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“…As there was no surface water supply, the water level gradually tended to be stable. The TEM survey confirmed the existence of lateral recharge phenomenon in the aquifer [33,34]; when the water level declined at a position of the aquifer, the lateral seepage occurred to recharge this position, leading to the decrease in the water level of the K lzh unconfined aquifer. In other words, although the damage of WFFZ was local, it affected the entire aquifer.…”

Section: Discussionmentioning

confidence: 53%

Dynamic Monitoring of the Water Flowing Fractured Zone during the Mining Process under a River

et al. 2018

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The hydrogeological conditions of coal mines in China are quite complex, and water inrush accidents occur frequently with disastrous consequences during coal extraction. Among them, the risk of coal mining under a river is the highest due to the high water transmissivity and lateral charge capacity of the unconfined aquifer under the river. The danger of mining under a river requires the accurate determination of the developmental mechanisms of the water flowing fractured zone (WFFZ) and the water flow mechanisms influenced by the specific geological conditions of a coal mine. This paper first used the transient electromagnetic (TEM) method to monitor the development of the WFFZ and the water flow mechanisms following the mining of a longwall face under a river. The TEM survey results showed that the middle Jurassic coarse sandstone aquifer and the Klzh unconfined aquifer were the main aquifers of the 8101 longwall panel, and the WFFZ reached the aquifers during the mining process. Due to the limited water reserves in the dry season, the downward flowing water mainly came from the lateral recharge in the aquifer. The water inrush mechanisms of the 8101 longwall panel in Selian No.1 Coal mine were analyzed based on the water flow mechanisms of the aquifer and the numerical simulation results. This provides theoretical and technical guidance to enact safety measures for mining beneath aquifers.

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Groundwater recharge in suburban areas of Hanoi, Vietnam: effect of decreasing surface-water bodies and land-use change

Cited by 23 publications

References 35 publications

Quantifying Riverine Recharge Impacts on Redox Conditions and Arsenic Release in Groundwater Aquifers Along the Red River, Vietnam

Quantifying Riverine Recharge Impacts on Redox Conditions and Arsenic Release in Groundwater Aquifers Along the Red River, Vietnam

Impact of urbanization on groundwater recharge rates in Dübendorf, Switzerland

Dynamic Monitoring of the Water Flowing Fractured Zone during the Mining Process under a River

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