Celebrating 50 years of SWIMs (Salt Water Intrusion Meetings)

Post, Vincent; Essink, Gualbert Oude; Szymkiewicz, Adam; Bakker, Mark; Houben, Georg; Custódio, Emílio; Voss, Clifford I.

doi:10.1007/s10040-018-1800-8

Cited by 23 publications

(5 citation statements)

References 4 publications

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“…The pumping of groundwater has led to the progressive salinization of groundwater in many parts of the world, particularly in coastal aquifers, as testified by a large number of case studies described in e.g. Custodio and Bruggeman (1987) and Post et al (2018). The process of upconing of a salt-fresh groundwater interface under an individual wells or drains has been studied extensively.…”

Section: Groundwater Salinizationmentioning

confidence: 99%

Non-renewable groundwater use and groundwater depletion: a review

Bierkens

Wada

2019

Environ. Res. Lett.

375

191

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Population growth, economic development, and dietary changes have drastically increased the demand for food and water. The resulting expansion of irrigated agriculture into semi-arid areas with limited precipitation and surface water has greatly increased the dependence of irrigated crops on groundwater withdrawal. Also, the increasing number of people living in mega-cities without access to clean surface water or piped drinking water has drastically increased urban groundwater use. The result of these trends has been the steady increase of the use of non-renewable groundwater resources and associated high rates of aquifer depletion around the globe. We present a comprehensive review of the state-ofthe-art in research on non-renewable groundwater use and groundwater depletion. We start with a section defining the concepts of non-renewable groundwater, fossil groundwater and groundwater depletion and place these concepts in a hydrogeological perspective. We pay particular attention to the interaction between groundwater withdrawal, recharge and surface water which is critical to understanding sustainable groundwater withdrawal. We provide an overview of methods that have been used to estimate groundwater depletion, followed by an extensive review of global and regional depletion estimates, the adverse impacts of groundwater depletion and the hydroeconomics of groundwater use. We end this review with an outlook for future research based on main research gaps and challenges identified. This review shows that both the estimates of current depletion rates and the future availability of non-renewable groundwater are highly uncertain and that considerable data and research challenges need to be overcome if we hope to reduce this uncertainty in the near future.

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Section: Groundwater Salinizationmentioning

confidence: 99%

Non-renewable groundwater use and groundwater depletion: a review

Bierkens

Wada

2019

Environ. Res. Lett.

375

191

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“…The Saltwater Intrusion Meetings (SWIMs) are a sequence of conferences/meetings that has been organized all over the world, in various countries on a two-yearly basis since 1968. The primary aim of SWIMs is to integrate the people for acquiring advanced technological knowledge about innovative discoveries and exchange knowledge of SWI in groundwater systems [65]. The first benefaction of SWIM about the use of numerical techniques was done by Verruijt (1972) [66].…”

Section: Saltwater Intrusion Meetings (Swims)mentioning

confidence: 99%

Status of seawater intrusion in coastal aquifer of Gujarat, India: a review

Siddha

Sahu

2020

SN Appl. Sci.

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Seawater intrusion (SWI) is a universal concern, intensified and aggravated due to over-exploitation of groundwater, sea-level rise, and climate change in the coastal province. According to the Ghyben-Herzberg principle, the stability between freshwater and saltwater is caused by the density difference between the two, until the pressure equalizes. The keystone of India's geography, economy, biodiversity, and the environment are its extended and vast coastline, which occupies the most precious as well as potential aquifer system. This review mainly fascinated on the status, knowledge, and vulnerability of SWI within the aquifers of the coastal region of Gujarat, India. Foregoing investigations reveal that the meteoric intensification in the salinity of coastal regions of Gujarat is the chief provenance of socioeconomic development and environmental degradation. Different studies are performed to analyze and mitigate the SWI problem. In this region, groundwater over-exploitation is the foremost driver of SWI. There are miscellaneous developmental and management skills and techniques to diminish the SWI in coastal regions of the world. Numerous models are fabricated and established to analyze and epitomize the complications associated with it. Numerical models suggest some valuable techniques to manage groundwater-related problems. This study also delivers some advanced management strategies such as dilution of salinewater by artificial recharge techniques, construction of physical barriers in the subsurface to reduce the intrusion etc. feasible to the coast of Gujarat.

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“…Nowadays, high demand from the coastal groundwater systems has increased the pressure on these resources (Oude Essink et al 2010;Ketabchi et al 2016b;Karamouz et al 2017Karamouz et al , 2020Klassen and Allen 2017). Saltwater intrusion (SWI) is a main problem in many coastal regions (Post et al 2018). Also, submarine groundwater discharge (SGD), which is the exchange of groundwater between the land and sea, involves the associated fluxes of nutrients.…”

Section: Introductionmentioning

confidence: 99%

A risk-based groundwater modeling framework in coastal aquifers: a case study on Long Island, New York, USA

2020

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A methodology is proposed to define indices for quantifying risks under the threat of reducing in groundwater levels, the existence of saltwater intrusion (SWI), and an increasing nitrate contamination load in submarine groundwater discharge (SGD). The proposed methodology considers coastal regions under geological heterogeneity and it is tested on a groundwater system in Nassau County of Long Island, New York (USA). The numerical model is constructed with the SEAWAT code. The parameter uncertainty of this model is evaluated by coupling the Latin hypercube sampling method (as a sampling algorithm) and Monte Carlo simulation to consider the uncertainty in both hydraulic conductivity and recharge rate. The indices are presented in spatial maps that classify areas of risk to potential threats. The results show that two of the water districts have a high risk under conditions of decreasing groundwater level. Salinity occurs in the southern and southwestern parts of the Nassau County aquifer and a considerable area of high risk of SWI is identified. Furthermore, the average SGD rate with the associated fluxes of nitrate is estimated as 81.4 million m3/year (average 0.8 tons of nitrate through SGD per year), which can adversely affect the quality of life in the local coastal ecosystems. The framework developed in this study could help the water district managers to identify high-risk areas for short-term and long-term planning and is applicable to other coastal settings.

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Celebrating 50 years of SWIMs (Salt Water Intrusion Meetings)

Abstract: Important note To cite this publication, please use the final published version (if applicable). Please check the document version above.

Cited by 23 publications

References 4 publications

Non-renewable groundwater use and groundwater depletion: a review

Non-renewable groundwater use and groundwater depletion: a review

Status of seawater intrusion in coastal aquifer of Gujarat, India: a review

A risk-based groundwater modeling framework in coastal aquifers: a case study on Long Island, New York, USA

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