Abstract This study enhances the understanding of riverbank filtration and improves management of the Mississippi River valley alluvial (MRVA) aquifer during a managed aquifer recharge (MAR) pilot project at Shellmound, MS. Using high‐resolution electrical resistivity tomography (ERT) and self‐potential (SP) geophysical methods, we characterized the heterogeneous MRVA aquifer and monitored groundwater flow near a pumping well. ERT was used to provide detailed spatial characterization, filling gaps left by airborne electromagnetic (AEM) data and soil boring logs, while SP techniques were used to monitor groundwater flow, predict drawdown trends, and investigate surface‐groundwater interactions. Results showed that SP signals were influenced by groundwater flow, river infiltration, and water mixing due to pumping disturbance of natural geochemical stratification, with significant river interaction observed after 1 h of pumping. The integration of ERT and SP methods revealed lithologic heterogeneity, explaining greater drawdowns on the northern side of the well and increased flow from the riverside. This comprehensive approach offers valuable insights into aquifer management and sustainability.

Md Lal Mamud

Robert M. Holt

Craig J. Hickey

Andrew M. O'Reilly

Leti T. Wodajo

Parsa Bakhtiari Rad

Md Abdus Samad

Ground Water

Integrating <scp>ERT</scp> and <scp>SP</scp> Techniques for Characterizing Aquifers and Surface‐Groundwater Interactions

整合ERT和SP技术用于表征含水层及地表-地下水相互作用

Jeeban Panthi

Rachel Spinti

Exploring Freshwater Beneath the Ocean Floor

探索海底淡水资源

Abstract Research into land subsidence caused by groundwater withdrawal is hindered by the availability of measured heads, subsidence, and forcings. In this paper, a parsimonious, linked data‐driven and physics‐based approach is introduced to simulate pumping‐induced subsidence; the approach is intended to be applied at observation well nests. Time series analysis using response functions is applied to simulate heads in aquifers. The heads in the clay layers are simulated with a one‐dimensional diffusion model, using the heads in the aquifers as boundary conditions. Finally, simulated heads in the layers are used to model land subsidence. The developed approach is applied to the city of Bangkok, Thailand, where relatively short time series of head and subsidence measurements are available at or near 23 well nests; an estimate of basin‐wide pumping is available for a longer period. Despite the data scarcity, data‐driven time series models at observation wells successfully simulate groundwater dynamics in aquifers with an average root mean square error (RMSE) of 2.8 m, relative to an average total range of 21 m. Simulated subsidence matches sparse (and sometimes very noisy) land subsidence measurements reasonably well with an average RMSE of 1.6 cm/year, relative to an average total range of 5.4 cm/year. Performance is not good at eight out of 23 locations, most likely because basin‐wide pumping is not representative of localized pumping. Overall, this study demonstrates the potential of a parsimonious, linked data‐driven, and physics‐based approach to model pumping‐induced subsidence in areas with limited data.

Jenny T. Soonthornrangsan

Mark Bakker

Femke C. Vossepoel

Linked Data‐Driven, Physics‐Based Modeling of Pumping‐Induced Subsidence with Application to Bangkok, Thailand

基于链接数据的物理驱动抽水沉降建模及其在泰国曼谷的应用

The data that support the findings of this study are openly available in Faculty of Engineering Repository at https://aquiparameter.ingenieria.unam.mx/.

Héctor Baez‐Reyes

Antonio Hernández‐Espriú

<scp>AquiParameter</scp>—A Novel Interactive Web‐Based Tool for Statistical Assessment of Hydrogeological Parameters

<scp>AquiParameter</scp>——一种用于水文地质参数统计评估的新型交互式网络工具

The CPqPy framework coupling COMSOL and PHREEQC based on Python was developed. This framework can achieve the simulation of diversified situations including multi-physics coupling and geochemical reactions of soil and groundwater. The multi-physics coupling models are calculated in COMSOL, whereas PHREEQC was applied to calculate the geochemical models through the Phreeqpy library in Python. Feasibility and accuracy of CPqPy were verified and applied to two cases, including a solute transport model considering equilibrium reaction and ion exchange as well as a reactive transport model of a variable saturation soil considering kinetic reaction. The results show a high degree of credibility of CPqPy. The framework has the advantages of strong portability, and it can be further used in conjunction with multiple Python calculation libraries, which greatly extends the application of the reactive transport model.

Yaqiang Wei

Xinde Cao

A <scp>COMSOL‐PHREEQC</scp> Coupled Python Framework for Reactive Transport Modeling in Soil and Groundwater

一个用于土壤和地下水反应性输运建模的<scp>COMSOL‐PHREEQC</scp>耦合Python框架

Abstract Mountainous zones are often characterized by complex orography and contacts between different aquifers that usually complicate the use of isotope hydrology techniques. The Apennine chain (Italy) and 10 mountain and mid‐mountain areas belonging to it are the objective of this study. An original isotopic data treatment, able to identify the most probable recharge area for several springs/springs' groups/wells, has been developed. The method consists of a two‐step approach: (1) the determination of the spring/wells computed isotope recharge elevation; (2) an advanced δ 18 O precipitation distribution model over the study area supported by statistical and GIS‐based procedures implemented by two processes: first, the clipping of precipitation δ 18 O values (depicted from the δ 18 O–elevation relationships obtained for each study area) over a most probable recharge area for each analyzed spring or well and, second, the calculation of the overlapping distribution between the spring/well mean δ 18 O values ± σ and the precipitation δ 18 O content for each outcropping aquifer. A new regional δ 18 O gradient covering 150 km latitudinal length of central Italy has been defined. Seven LMWL and δ 18 O–elevation relationships able to represent the local precipitation isotopic composition have been obtained. The mean elevation of the springs and wells recharge areas have been assessed by a comparison between the obtained gradient with nine δ 18 O gradients available in the literature and those obtained at a local scale. The new isotopic modeling approach can stress whether the mere isotope modeling based on the stable isotope of oxygen agrees with the hydrogeological setting of the study areas.

Alberto Tazioli

Davide Fronzi

Stefano Palpacelli

Regional vs. Local Isotopic Gradient: Insights and Modeling from Mid‐Mountain Areas in Central Italy

区域与局部同位素梯度：从中部意大利山地地区的见解与建模

GroundwaterEarly View Society News Society News Mike Price, Corresponding Author Mike Price [email protected] National Ground Water Association, Westerville, OH, 43081-8978 USASearch for more papers by this author Mike Price, Corresponding Author Mike Price [email protected] National Ground Water Association, Westerville, OH, 43081-8978 USASearch for more papers by this author First published: 16 February 2024 https://doi.org/10.1111/gwat.13396Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Early ViewOnline Version of Record before inclusion in an issue RelatedInformation

Mike Price

Society News

社会新闻

Data sharing is not applicable to this article as no new data were created or analyzed in this study.

Christopher J. Neville

Passing the Baton

传递接力棒

Abstract Groundwater allocation is rapidly becoming a contentious water resource management problem around the world. It is anticipated that the effects of climate change would further aggravate this problem. Conflicts over the distribution of freshwater are expected to increase as stakeholders want to access more groundwater to meet their growing demands. In the United States, water conflicts are settled through a litigation process. Water litigations can be expensive, protracted, and fraught with complex legal and technical difficulties. A landmark groundwater case involving Tennessee (TN) and Mississippi (MS) was recently litigated in the Supreme Court of the United States (SCOTUS). In this case, MS sued TN for stealing their groundwater and SCOTUS unanimously ruled that the water contained in the aquifer that naturally crosses the border between TN and MS is subject to equitable apportionment. This decision has significant ramifications for groundwater management as it established a precedent for resolving future interstate groundwater litigations. Although the Court has previously applied the legal doctrine of equitable apportionment to settle disputes involving surface water use, this is the first instance in which the doctrine has been applied to resolve an interstate groundwater dispute. Therefore, currently, there are little or no guidelines available for equitably distributing groundwater resources between two states. The objective of this article is to examine this historic legal dispute to fully understand the scientific justification for the judicial stances taken by the plaintiff and defendants, and the legal reasoning for the final verdict. We also discuss the challenges this ruling presents for managing interstate groundwater resources.

Nimisha Wasankar

T. Prabhakar Clement

Implications of the Mississippi v. Tennessee Supreme Court Decision for Interstate Groundwater Management

密西西比诉田纳西州最高法院判决对州际地下水管理的启示

Abstract The safe operation of underground reservoirs and environmental protection heavily rely on the water flow through coal pillar dams in coal mines. Meanwhile, research on the flow characteristics in coal pillar dams has been limited due to their low hydraulic conductivity. To address this gap, this study assembled a novel seepage experimental device and conducted a series of carefully designed seepage experiments to examine the characteristics of low‐permeability in coal pillar dams. The experiments aim to explore the relationship between water flux and hydraulic gradient, considering varying core lengths and immersion times. Flow parameters were determined by fitting observed flux‐gradient curves with predictions from both Darcy and non‐Darcian laws. Several significant results were obtained. First, a noticeable non‐linear relationship between water flux and hydraulic gradient was observed, particularly evident at low flow velocities. Second, the non‐Darcy laws effectively interpreted the experimental data, with threshold pressure gradients ranging 13.60 to 58.64 for different core lengths. Third, the study established that water immersion significantly affects the flow characteristics of coal pillar dams, resulting in an increased hydraulic conductivity and flow velocity. These findings carry significant implications for the design of coal pillar dams within underground coal mine reservoirs, providing insights for constructing more stable structures and ensuring environmental protection.

Xu Li

Peng Zhu

Konghui Zuo

Zhang Wen

Qi Zhu

Qiang Guo

Hamza Jakada

Experimental Study of Non‐Darcian Flow Characteristics in Low‐Permeability Coal Pillar Dams

低渗透性煤柱坝非达西流特性的实验研究

《地下水》是专注于地下水的领先国际期刊。自 1963 年以来，GROUND WATER 发表了一系列与地下水相关的论文，包括地下水流动和井水力学、水文地球化学和污染物水文地质学、地球物理学应用、地下水管理和政策以及地下水水文学史。这是您可以信赖的期刊，可为您带来地下水水文学中的实际应用。

GROUND WATER is a leading international journal focused on groundwater research. Since its inception in 1963, GROUND WATER has published a wide range of papers related to groundwater, including studies on groundwater flow and well hydraulics, hydrogeochemistry and contaminant hydrogeology, applications of geophysics, groundwater management and policy, as well as the history of groundwater hydrology. This is a trusted journal that provides practical applications in the field of groundwater hydrology.

《地下水》是一本专注于地下水研究的国际领先期刊。自1963年以来，GROUND WATER发表了大量与地下水相关的研究论文，涵盖了地下水流动与井水力学、水文地球化学与污染物水文地质学、地球物理学应用、地下水管理与政策，以及地下水水文学的历史等领域。这是一本值得信赖的期刊，为您提供地下水水文学的实际应用研究。

期刊	Ground Water
ISSN	0017-467X, 1745-6584
h-index	110
Journal Impact	2.19
国际分区	WATER RESOURCES(Q3)
国内分区	地球科学(4区)地球科学地球科学综合(4区)地球科学水资源(4区)