Groundwater Locating Articles

  • Large Precipitation Events are Critical in Replenishing Groundwater Resources

    Large precipitation events that occur about every 10 years are a critical source of recharge for replenishing groundwater resources, according to a new study by the U.S. Geological Survey and the Bureau of Reclamation. Groundwater is a vital source of water in the western United States, and will be increasingly ...

  • Water reuse through managed aquifer recharge (MAR): assessment of regulations/guidelines and case studies

    Managed aquifer recharge (MAR) with reclaimed water is an important water reuse application. As an intentional way of recharging water into aquifers, MAR can be used to address water shortages and contribute to sustainable water resources management practices. The establishment of a MAR system depends on the source of recharge water, the selection of a recharge method and site, the type of ...


    By IWA Publishing

  • Study offers first-ever map showing groundwater pollution of coastal areas of United States

    The study identified 12 percent of the continental U.S. coastline — including the northern Gulf Coast from Mississippi to the Florida Panhandle, northern Atlantic Coast, and Pacific Northwest — where the once-hidden drainage systems make the ocean most susceptible to freshwater contamination from septic tanks and fertilizer runoff. In contrast, another 9 ...

  • Case Study - Groundwater: 600 meter Deep Survey

    Thika, Kenya Survey date: February 13, 2006 Location: Thika, Kenya Instrument: SuperSting R8/IP with Switch Box 84 and AGI resistivity imaging cable and electrode stakes with spring Electrode geometry:  combined dipole-dipole, schlumberger and pole-dipole array (20 m spacing for 646 m exploration depth) Software:  ...


    By Advanced Geosciences, Inc.

  • Case Study - Groundwater: Locating Water Wells

    South Sudan: 4000 L/min water well Date:  February 25, 2015 Site:  Yeri Mozo Village, South Sudan, Africa Equipment:  SuperStingR8 WiFi, SwitchBox56 and passive cables spaced at 5m. Software:  EarthImager2D with a finite element inversion model of dipole-dipole array data. Results:  Resistivity imaging successfully ...


    By Advanced Geosciences, Inc.

  • Case Study - Groundwater: 125 GPM Water Well

    Groundwater Well Locating for West Texas Fracking Operation Date:  June 20, 2014 Site:  West-Texas – undisclosed oil and gas field Equipment:  SuperStingR8 WiFi with SwitchBox112 with passive cables spaced at 6m.  Dipole-dipole and strong gradient array Software:  EarthImager2D with a finite element inversion model ...


    By Advanced Geosciences, Inc.

  • Case Study - Springs: Limestone Fractures - Comal Springs, Texas

    Title: 3D Imaging of Karst Fractures at Comal Springs, Texas, USA Organization: University of Texas at Austin and The Edwards Aquifer Authority Date collected: March 2015 Location: Comal Springs, Texas, USA Instrument: SuperSting Wi-Fi, 28 electrode AGI Passive Graphite Electrode Marine Cable Electrode Spacing: 1 meter Array: Dipole-Dipole Number of Electrodes: ...


    By Advanced Geosciences, Inc.

  • Beaver Dam Groundwater Survey Project, Utah - Case Study

    In May 2014, we conducted seismoelectric survey for Willowstick Technologies LLC in Beaver Dam area, Utah, USA. According to our client’s requirement, we designed 3 seismoelectric survey lines, with total 50 measurement stations. After data processing and interpretation, we located 3 layers of aquifers. The red layers are the top and bottom of the first aquifer; the green ones for the ...


    By Seismo Electronic LLC.

  • Case Study - Remedial Investigation - Former Vickers Refinery, Potwin, Kansas

    MWH carried out this comprehensive investigation in order to characterize soil, geology, surface water, and groundwater and identify possible source areas and potential contaminant migration pathways. Additionally, this investigation evaluated hydraulic pathways and the interaction between aquifers, evaluate the performance of the recovery wells, and evaluate groundwater and surface water ...


    By EI LLC

  • Antibiotics in groundwater under locations with high livestock density in Germany

    Antibiotics are deployed in large quantities both in human and in veterinary medicine. Studies show that antibiotic residues occur in the environment (e.g. soil and surface waters). In some cases they were also detected in ground and drinking water. However, the degree of groundwater pollution by antibiotic residues from livestock farming is unknown. Therefore, the federal environment agency ...


    By IWA Publishing

  • Kinds of freshwater and their relation to ecosystem services and human well-being

    The concept of ecosystem services (ESS) has evolved as a link between society and the environment and is recognized by both natural and social scientists. While this concept is increasingly being developed and applied to various ecological systems, it has not been defined specifically for different kinds of water. As water circulation is crucial for large-scale services, such as climatic and ...


    By IWA Publishing

  • Study of groundwater using visual MODFLOW in the Manas River Basin, China

    For effective groundwater management of a basin, it is essential that a careful water balance study be carried out. A three-dimensional transient-state finite difference groundwater flow model is used to quantify the groundwater fluxes and analyze the dynamic changes of groundwater level. After monitoring groundwater levels for 43 typical observation wells through a simulation study of the ...


    By IWA Publishing

  • Always well-informed, and now mobile as well

    AERZEN’s corporate websites are being upgraded: Since May 2016, www.aerzen.com has been online with a lot of new content and functionality. Upgrades will take place to the websites of all AERZEN subsidiaries worldwide over the course of 2016. The new AERZEN website impresses with a high degree of transparency, user friendliness and service capability, which exactly represents the image ...

  • Inequitable allocation of deep community wells for reducing arsenic exposure in Bangladesh

    Community wells that extend deeper than most private wells are crucial for reducing exposure to groundwater arsenic (As) in rural Bangladesh. This study evaluates the impact on access to safe drinking water of 915 such intermediate (90–150 m) and deep (>150 m) wells across a 180 km2 area where a total of 48,790 tubewells were tested with field kits in 2012–13. Half the shallow private wells ...


    By IWA Publishing

  • Adsorption of As, B, Cr, Mo and Se from coal fly ash leachate by Fe3+ modified bentonite clay

    Fly ash contains the potentially toxic elements As, B, Cr, Mo and Se which upon contact with water may be leached to contaminate surface and subsurface water bodies. This study aims to evaluate the adsorption of these elements from coal fly ash leachates on Fe3+-modified bentonite (Fe-Bent); such modification improved the physicochemical properties of bentonite clay. For optimization of ...


    By IWA Publishing

  • Application of 3D-fluorescence/PARAFAC to monitor the performance of managed aquifer recharge facilities

    3D-fluorescence spectroscopy was used as a monitoring tool to describe the fate and transport of dissolved organic matter (DOM) during groundwater recharge using recycled water, imported water, and stormwater at a managed aquifer recharge site in California. The study was supplemented by analysis of conservative wastewater-derived trace organic chemicals using liquid chromatography coupled ...


    By IWA Publishing

  • Fate of bulk organic carbon and bromate during indirect water reuse involving ozone and subsequent aquifer recharge

    Long-term column studies with ozonated secondary effluent were conducted to evaluate the removal of dissolved organic carbon (DOC) and to assess formation and stability of the oxidation by-product bromate in combined ozonation and managed aquifer recharge (MAR) systems. DOC removal during simulated MAR was continuously increased from approximately 20 to 40% by pretreatment with ozone ...


    By IWA Publishing

  • Robust sensor placement for leak location: analysis and design

    In this paper, a nominal sensor placement methodology for leak location in water distribution networks is presented. To reduce the size and the complexity of the optimization problem a clustering technique is combined with the nominal sensor placement methodology. Some of the pressure sensor placement methods for leak detection and location in water distribution networks are based on the ...


    By IWA Publishing

  • Self-organizing map clustering technique for ANN-based spatiotemporal modeling of groundwater quality parameters

    The present study integrates co-kriging as spatial estimator and self-organizing map (SOM) as clustering technique to identify spatially homogeneous clusters of groundwater quality data and to choose the most effective input data for feed-forward neural network (FFNN) model to simulate electrical conductivity (EC) and total dissolved solids (TDS) of groundwater. The methodology is presented in ...


    By IWA Publishing

  • ATES: a geo-informatics decision aid tool for the integration of groundwater into land planning

    Groundwater is the primary source of drinking water for small municipalities and individuals. However, groundwater can be polluted by almost any land use. Consequently, many governments have acquired groundwater information in the aim of protecting the resource. Nevertheless, the resulting data are often ill-fitted to planning needs. In a previous study, a method was developed to help planners ...


    By IWA Publishing

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