Article
Multidisciplinary Sciences
Andreas Hartmann, Scott Jasechko, Tom Gleeson, Yoshihide Wada, Bartolome Andreo, Juan Antonio Barbera, Heike Brielmann, Lhoussaine Bouchaou, Jean-Baptiste Charlier, W. George Darling, Maria Filippini, Jakob Garvelmann, Nico Goldscheider, Martin Kralik, Harald Kunstmann, Bernard Ladouche, Jens Lange, Giorgia Lucianetti, Jose Francisco Martin, Matias Mudarra, Damian Sanchez, Christine Stumpp, Eleni Zagana, Thorsten Wagener
Summary: Groundwater pollution poses a threat to human and ecosystem health globally, with focused recharge being the primary reason for rapid transport of pollutants into groundwater, posing a significant risk to groundwater quality.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Engineering, Civil
Richard A. Pauloo, Graham E. Fogg, Zhilin Guo, Thomas Harter
Summary: This study demonstrates that groundwater development, even without overdraft, can lead to groundwater salinization and the closure of hydrologic basins. Using the Tulare Lake Basin in California as a case study, it was found that even with modern water management practices to reduce historic overuse, deep aquifers can still be impacted by salinization within two to three centuries. This poses a serious challenge to groundwater quality sustainability, suggesting that agriculturally intensive groundwater basins worldwide may be susceptible to these issues.
JOURNAL OF HYDROLOGY
(2021)
Article
Environmental Sciences
Oussama Dhaoui, Imhr Antunes, Belgacem Agoubi, Adel Kharroubi
Summary: Groundwater salinization is a major issue in arid and semi-arid areas due to various natural processes and human activities, causing irreversible environmental and economic impacts. This study evaluated the vulnerability of Menzel Habib's groundwater and developed a modified vulnerability index, DRASTIC_Sal, for assessment in such regions. Results showed low to moderate vulnerability in the area, with the western region being the most vulnerable.
ENVIRONMENTAL RESEARCH
(2022)
Article
Agronomy
Sunil Kumar Jha, Vinay Kumar Mishra, Chhedi Lal Verma, Navneet Sharma, Alok Kumar Sikka, Paul Pavelic, Probodh Chandra Sharma, Laxmi Kant, Bharat R. Sharma
Summary: Researchers in India conducted a pilot-scale hydrogeochemical study in the Ramganga sub basin, using a modified version of managed aquifer recharge (MAR) to effectively utilize floodwaters for groundwater recharge and quality improvement. The project successfully demonstrated the benefits of the modified MAR approach in enhancing aquifer recharge and improving water quality.
AGRICULTURAL WATER MANAGEMENT
(2021)
Article
Engineering, Environmental
Guillaume Bertrand, Emmanuelle Petelet-Giraud, Lise Cary, Ricardo Hirata, Suzana Montenegro, Anderson Paiva, Jurgen Mahlknecht, Victor Coelho, Cristiano Almeida
Summary: Due to global warming and local anthropogenic pressures, coastal cities are facing threats to sustainable groundwater resource exploitation. This study focuses on the city of Recife as a representative hot spot, characterizing the environmental impacts on groundwater resources and identifying factors contributing to contamination types. A risk map was created to identify areas where groundwater resources may pose environmental and health issues. The study also highlights the importance of combining hydrochemical, geomorphological, and socio-environmental characterizations in proposing groundwater management strategies.
Review
Water Resources
Bismark Awinbire Akurugu, Emmanuel Obuobie, Sandow Mark Yidana, Simon Stisen, Ida Karlsson Seidenfaden, Larry Pax Chegbeleh
Summary: This paper reviews the aquifers and groundwater resources in the Densu River Basin in Ghana, West Africa. It highlights the hydrogeological and hydrochemical characteristics, water quality and quantity challenges, and the potential impacts of climate change and human activities on the groundwater resources. The study reveals that groundwater recharge exceeds abstraction in the basin, but it is at risk due to climate change threats and population growth. The quality of the groundwater is generally acceptable, but contamination from domestic waste discharge, mining, and agriculture is significant. The paper emphasizes the need for integrated hydrogeological assessment to enhance understanding of aquifers and groundwater resources for informed water management decisions.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2022)
Article
Geosciences, Multidisciplinary
B. J. M. Goes
Summary: The state of groundwater in South Sudan is heavily reliant on the Umm Ruwaba Formation and Basement Complex geological formations, with varying water resource potential due to factors such as depth, transmissivity, and salinity levels.
HYDROGEOLOGY JOURNAL
(2022)
Article
Environmental Sciences
Fenyan Ma, Jiansheng Chen, Lucheng Zhan, Tao Wang, Jiaheng Yan, Xi Zhang
Summary: The relationship between groundwater and seawater is sensitive, especially in coastal regions with developed faults. In this study, the impact of groundwater exploitation on confined groundwater and seawater was analyzed in the Subei Basin. The results show that seawater intrusion has negligible effect on confined groundwater, but groundwater desalination is apparent. The study also reveals that the upward recharge of basalt groundwater through active faults plays a significant role in the relationship between groundwater and seawater.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Sutthipong Taweelarp, Morrakot Khebchareon, Schradh Saenton
Summary: The Chiang Mai basin is facing a critical groundwater condition with a continuous decrease in water table and potentiometric surface, indicating the need for careful management. The spatial variability of hydrogeologic parameters significantly affects the accuracy of the groundwater flow model, with hydraulic conductivities and recharge rates being the most sensitive parameters. The safe yield calculation suggests that the unconsolidated aquifers of the Chiang Mai basin can sustain higher extraction rates than the current levels.
Article
Engineering, Environmental
Giovanni Castaldo, Ate Visser, Graham E. Fogg, Thomas Harter
Summary: The study focuses on how groundwater travel time and recharge source and mechanism influence nitrate concentrations in domestic wells in SVM, CA. Results show a decreasing trend in nitrates with groundwater travel time and well depth, with wells closer to rivers having lower nitrate concentrations due to river water recharge. This suggests that irrigation with river water also dilutes nitrate concentrations in groundwater, which may be useful for remediation strategies.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Anthony A. Duah, Bismark A. Akurugu, Philip K. Darko, Evans Manu, Patrick A. Mainoo
Summary: The study revealed seasonal and spatial variation in groundwater recharge in the Densu basin, with a north-south decreasing trend. The average groundwater recharge was estimated to be 70 mm and 62 mm/year using the chloride mass balance approach and water level fluctuation method respectively.
JOURNAL OF AFRICAN EARTH SCIENCES
(2021)
Article
Environmental Sciences
Weifei Yang, Changlai Xiao, Zhihao Zhang, Xiujuan Liang, Zhang Fang
Summary: Groundwater resources in mountainous basins are vital for the ecological environment and downstream water supply. This study utilized daily streamflow data to estimate groundwater balance and analyze the response of recharge to rainfall in the Tao'er River Basin of Northeast China. The results showed that recharge mainly occurs through rainfall percolation in summer, with rapid discharge of groundwater through baseflow and evapotranspiration.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Water Resources
Yanhui Dong, Yueqing Xie, Jun Zhang, Andrew J. Love, Xin Dai
Summary: Groundwater age is commonly used to estimate groundwater recharge, and it has been found that in many areas we can estimate long-term average groundwater recharge with a 10% error. The location of the sampling point has an impact on obtaining reasonable groundwater recharge.
HYDROLOGICAL PROCESSES
(2021)
Review
Geochemistry & Geophysics
Ioannis-Porfyrios D. Eliopoulos, George D. Eliopoulos, Maria Economou-Eliopoulos
Summary: The study explores the reasons for the elevated Cr(VI) concentrations in coastal groundwater and highlights the potential relationships between seawater components and Cr(VI). It also emphasizes the impact of oxidation and reduction processes on Cr(VI) concentrations, as well as the role of borate ions in maintaining the stability of Cr(VI) in coastal groundwater.
Article
Engineering, Civil
Jia-Xin Shi, Xiao-Wei Jiang, Zhi-Yuan Zhang, Yi-Peng Zhang, Xu-Sheng Wang, Li Wan
Summary: This study investigates the groundwater flow field and its influencing factors near a wetland on a sandy hillslope in the Ordos Plateau, China. It finds that the variable thickness of the unsaturated zone near the wetland is responsible for the formation of groundwater mounds and depressions caused by focused recharge and nonuniform evapotranspiration. The study also highlights the implications for groundwater recharge estimation and future groundwater modeling in arid regions.
JOURNAL OF HYDROLOGY
(2023)