aquifer Articles
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Water resources in Korisos basin, NW Greece: interactions between surface and ground water
The aim of this paper is to review the water resources of the Korisos basin located in the NW Greece and to explore the ground- and surface water interactions. Based on results, it can be concluded that there is a hydraulic communication between the torrent flow and the alluvial aquifer, indicating the important role of stream flow to recharge the alluvial aquifer. Total abstraction from the ...
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The application of groundwater modelling to simulate the behaviour of groundwater resources in the Ramhormooz Aquifer, Iran
In this study, groundwater modelling was proposed as management tool in Ramhormooz Plain, south western Iran. After definition of a conceptual model, the necessary data were defined into various packages of MODFLOW. Subsequently, the model was calibrated by trial and error estimation and the results were finally optimised by PMWIN through PEST code. After verification process, the model was used ...
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Florida Utility Uses Aqua TROLL 200 Instruments to Monitor Aquifer Storage and Recovery System
Aqua TROLL 200 tracks groundwater levels and water quality of injected and retrieved water Application Aquifer Storage and Recovery (ASR) systems can store large amounts of water deep underground and can reduce development of expensive surface reservoirs. Aquifer storage eliminates evaporative losses typical of surface water reservoirs and offers better protection from tampering. ASR systems may ...
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Assessing interactions between groundwater and surface water in a Pampean stream
In the south of Córdoba (Argentina), groundwater from the unconfined aquifer, presents scarce suitability due to high values of salts, sulfates, arsenic and fluorides. This situation makes it necessary to explore other possibilities, for example, conjunctive use of groundwater and surface water. The objective of this work was to describe the dynamic and geochemical relationships between ...
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Impact of climate variability on the salinization of the coastal wetland-aquifer system of the Po Delta, Italy
Deltaic coastal areas are constituted by a patchwork of brackish lagoons and freshwater bodies; these coastal wetland-aquifer systems are fragile ecosystems that usually respond quickly to climate changes. To understand the hydrological processes occurring within the lagoons and the groundwater system of the Po River Delta (Italy), the contribution of both evaporation and anthropogenic ...
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Verifying the Use of Specific Conductance as a Surrogate for Chloride in Seawater Matrices
ABSTRACT Coastal groundwater supplies, when overused, are particularly vulnerable to chloride contamination due to their close proximity to saltwater. Bevated chloride concentration in groundwater isthe most commonly used indicator of saltwater intrusion in coastal aquifers. Father well-defined relationships of specific conductance (SC) to chloride exist (Hem 1992: Christensen et al. 1999). To ...
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Analysis of groundwater–surface water interaction in horizontal unconfined aquifer bounded by a stream and groundwater divide using a non–linear numerical model
In this study, a non–linear numerical model was developed to analyse the interaction between the drainage water moving from an unconfined aquifer and a surface water body. This interaction can occur during or after a rainfall event, which can cause the groundwater table to change. At first, a laboratory–scale aquifer model with stream and groundwater divide boundaries was established to examine ...
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Finite element modelling of a heavily exploited coastal aquifer for assessing the response of groundwater level to the changes in pumping and rainfall variation due to climate change
Coastal aquifers are always under threat of seawater intrusion due to over-extraction of groundwater. The objective here is to assess aquifer response to variation in pumping and rainfall recharge due to projected climate change by groundwater modelling in a heavily exploited aquifer. Finite element groundwater flow modelling was carried out from March 1988 to December 2030 using FEFLOW ...
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Groundwater banking: opportunities and management challenges
Groundwater banking is the use of aquifers to store water to balance seasonal or longer-term variations in supply and demand. The large storage capacity provided by aquifers can be a valuable tool for conjunctive use of surface water and groundwater as well as other elements of integrated water resources management. Successful groundwater banking requires favorable hydrogeological conditions to ...
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Gasoline storage tank spill - Exxon
LOCATION: Millville, New JerseyPROJECT DATE: June, 1975 to September, 1976CLIENT: Exxon BACKGROUND: A gasoline spill from a storage tank was found when gasoline fumes were noticed in basements adjacent to the gasoline station. An undetermined amount of gasoline was lost to the shallow, unconfined sandy aquifer of high porosity and permeability. An extensive clay bed lay beneath the aquifer. ...
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Groundwater Level Forecasting in a Shallow Aquifer Using Artificial Neural Network Approach
Forecasting the ground water level fluctuations is an important requirement for planning conjunctive use in any basin. This paper reports a research study that investigates the potential of artificial neural network technique in forecasting the groundwater level fluctuations in an unconfined coastal aquifer in India. The most appropriate set of input variables to the model are selected through a ...
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Hydro–geochemical behaviour of two coastal aquifers under severe climatic and human constraints: comparative study between Essaouira basin in Morocco and Jeffara basin in Tunisia
Since surface waters are mostly irregular and rare, groundwater in arid and semi–arid regions are submitted to high human constraints enhanced by severe climatic conditions. Multiple isotope analyses and chemical tracing of groundwater from the Essaouira basin (South–Western Morocco) and from the Jeffara basin (South–Eastern Tunisia) reveal that salinisation processes are mainly related to ...
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Managed Aquifer Recharge
As water demand increases, recycled water can be used to maintain groundwater levels In recent years, groundwater stored in key aquifers has become rapidly depleted. This is due not only to demand, but also to technological advances — notably the introduction of the rotary drill in the 1880s and the submersible electric water pump in the 1960s — that have increased exploitation of ...
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What is Groundwater Banking?
This system allows users to store water in underground aquifers for later use As the world’s water becomes more and more scarce due to climate change, groundwater banking is gaining interest, but what exactly is it? It’s a system used in water management to maintain year-to-year water supply stability and volume by depositing water in aquifers during wet years and withdrawing it ...
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The age, distribution, and geochemical characteristics of groundwater in the Ordovician limestone aquifer in the Huaibei coalfield, China
In this study, we collected 22 groundwater samples and supporting measurements from different coal-mining districts in the Huaibei coalfield to examine the age, hydro-chemical characteristics, and evolution of groundwater in the Ordovician limestone aquifer (OA). We determined the groundwater concentrations of major ions, stable isotopes (hydrogen and oxygen) and a radio isotope (14C). All ...
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Denitrification during vertical upwelling at an alluvium–diluvium interface below the upland perimeter of a Riparian paddy
Received for publication May 4, 2008. Denitrification hotspots in riparian aquifers often develop in a relatively narrow zone at the upland–riparian interface, where nitrate-rich ground water of upland origin interacts with available soil organic carbon. In riparian paddy fields, denitrification in the aquifer has received less attention than that in the surface water and soil. This study aimed ...
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Combatting Groundwater Depletion in Texas
Desalination and wastewater treatment for reuse makes managing essential resources possible Texas is pumping groundwater at unsustainable rates, which means more wells, springs, and surface water bodies may start to run dry. The state is already losing groundwater at almost double the sustainable rate, and researchers warn that current management agency plans will likely increase the rate at ...
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Americans Drilling Deeper for Groundwater
The practice is widespread, but ultimately unsustainable Researchers from the University of California, Santa Barbara have completed an ambitious analysis of decades of data on 11.8 million water wells in the United States and determined that Americans are drilling deeper for groundwater than ever before. They focused on areas around the nation known to be heavily dependent on groundwater, ...
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Industrial Site, Houston, Texas - Case Study
Site Summary BioLogix CL bioaugmentation was implemented in combination with dual phase extraction at an industrial site near Houston, Texas to remove trichloroethylene (TCE) from ground water. The overlying contaminated soil was excavated, but perched ground water and a deeper aquifer had TCE concentrations greater than 10,000 |jg/L A dual-phase vacuum extraction system was installed to control ...
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An Aquifer Recharge Success Story
Idahoans work together to replenish the Eastern Snake River Plain Aquifer With so much bad news about depletion of global freshwater resources, often about crises that could have been prevented with forethought and preparation, it’s always good to hear a success story. And Idahoans can be proud of the managed aquifer recharge (MAR) program that contributed to the success. The Eastern ...
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