Groundwater Monitoring Articles

  • The importance of groundwater monitoring

    Groundwater monitoring is an essential element in any environmental information system. Based upon validated groundwater monitoring data, information is derived on which decisions can be made. Constant monitoring provides the necessary data input for your smart environment and is basically the basis of the decision making process concerning spatial planning and climate change adaptation. As in ...


    By Eijkelkamp Soil & Water

  • Application of leaching tests on phosphogypsum by infiltration-percolation

    The phosphoric acid production obtained by attacking phosphate rock by sulphuric acid cogenerates considerable quantities of phosphogypsum. The world cogeneration is estimated about 100–280 Mt per year. In another context of sustainable development, the phosphate chemical industry develops different ways of phosphogypsum valorization, which makes its storage stack in a suitable way for its ...


    By IWA Publishing

  • The impact of low-flow season on source drinking water quality, Rosetta branch, Egypt

    The present work was conducted to document the problems raised regarding low-flow in the Rosetta branch, Egypt and to develop management options to protect drinking water sources. The water quality was monitored during low-flow periods at four drinking water intakes. Results showed an increase in electric conductivity (EC), ammonium (NH4), nitrite (NO2), phosphate (PO4), and ...


    By IWA Publishing

  • Using Resistivity for Basalt Site Characterization - Case Study

    Purpose A mining company in Turkey hoped to determine existing and new alternative basalt zones at an existing basalt mining site by using Electrical Resistivity Imaging (ERI). Process Our client, Ali Karan, used 84 electrodes spaced at 10 meters and two lines 5 meters apart inside the study ...


    By Advanced Geosciences, Inc.

  • Surveying for 600-Meter-Deep Groundwater in Kenya - Case Study

    The importance of groundwater can’t be overstated. It’s crucial for life across the globe, and, in the developing world, access to groundwater is at a premium. However, with resistivity imaging groundwater exploration techniques, even when you’re in one of the driest locations on Earth, deep groundwater is possible to locate. ...


    By Advanced Geosciences, Inc.

  • Locating Groundwater Wells for Fracking Operations in West Texas - Case Study

    In June 2014, our clients used AGI resistivity imaging tools to successfully locate a 125-gallon-per-minute groundwater well in West Texas as well as geohazards that could, if left unlocated, cause significant damage to property and increase costs. Process Our clients used the ...


    By Advanced Geosciences, Inc.

  • Modelling spatio-temporal heterogeneities in groundwater quality in Ghana: a multivariate chemometric approach

    Chemometric techniques were applied to evaluate the spatial and temporal heterogeneities in groundwater quality data for approximately 740 goldmining and agriculture-intensive locations in Ghana. The strongest linear and monotonic relationships occurred between Mn and Fe. Sixty-nine per cent of total variance in the dataset was explained by four variance factors: physicochemical properties, ...


    By IWA Publishing

  • Low recirculation rate evaporators

    Abstract Fin coil evaporators with enhanced internal tube surfaces allow for optimum performance with a minimal overfeed rate. Reducing the overfeed rate requiresless pumping power and smaller line sizes to the evaporator. Additionally, less compressor power is required for the same refrigeration capacity because the wet suction line pressure drop is reduced. Lower compressor power results ...


    By Evapco Inc.

  • Electric treatment for hydrophilic ink deinking

    Hydrophilic inks have been widely used due to higher printing speed, competitive cost and being healthy non-organic solvents. However, they cause problems in both product quality and process runnability due to their hydrophilic surface wettability, strong negative surface charge and sub-micron size. Electric treatment was shown to be able to increase the ink sizes from 60 nm to 700 nm through ...


    By IWA Publishing

  • Researchers: Current global groundwater recharge models inaccurate

    A large-scale analysis of existing water resource models used around the world has found some key processes are missing, which means estimates of water availability could be wrong and cannot be reliably used for making water management decisions. The international team of scientists found that important climate change impact models are wrong in some areas. One finding was that groundwater ...


    By Fluence Corporation

  • Determination of Flow Rates in part-filled Applications using the Radar Method

    Introduction The radar measurement method plays an increasingly important role in the water and wastewater field. This is particularly reflected by the "Metering outside of the medium" trend. Flow measurement using radar which enables contactless measurements thus becomes a major focal point. It features a wide range of applications and hence is useful as permanent measurement system for ...


    By NIVUS GmbH

  • Fighting saltwater intrusion into groundwater supplies

    As freshwater supplies around the world diminish, human intervention is needed to protect existing sources to slow the onset of water scarcity. One ongoing struggle is to preserve the water in underground aquifers, which cities often rely on for drinking water. Intrusion of saltwater into these underground supplies is rendering them unfit for consumption or irrigation. The rock and soil that ...


    By Fluence Corporation

  • Multi-criteria analysis of site selection for groundwater recharge with treated municipal wastewater

    Geographic information systems (GIS) and remote sensing techniques are used as a decision support system to identify potential soil aquifer treatment (SAT) sites for groundwater recharge of Kerman aquifer, which is located in the southeast of Iran. These sites are identified using a single-objective multi-criteria analysis. To ensure technical feasibility, environmental sustainability, social ...


    By IWA Publishing

  • Development of two-dimensional groundwater flow simulation model using meshless method based on MLS approximation function in unconfined aquifer in transient state

    In recent decades, due to reduction in precipitation, groundwater resource management has become one of the most important issues considered to prevent loss of water. Many solutions are concerned with the investigation of groundwater flow behavior. In this regard, development of meshless methods for solving the groundwater flow system equations in both complex and simple aquifers' geometry ...


    By IWA Publishing

  • How food production impacts global groundwater supplies

    The ever-increasing global trade in food is accelerating groundwater depletion in many areas of the world, emptying aquifers faster than they can be naturally recharged, according to newly released research. Although groundwater depletion is a well-known and frequently studied issue, the new research focuses on how groundwater supplies are affected by international trade. Agricultural ...


    By Fluence Corporation

  • How Proper Coil Cleaning Increases Savings, IAQ and System Efficiency

    As things begin to heat up this summer, more and more HVAC facility managers and technicians will experience equipment and maintenance headaches. Take for example air conditioning systems. Even a well-maintained HVAC system consumes a lot of electricity, especially during the summer months.  In ...

  • Three-dimensional numerical investigation on the influence of geometric shape on flow in river bends

    To investigate the influences of river bend geometry on flow structures, three-dimensional simulations were carried out. The influence of aspect ratio, channel sinuousness and curvature ratio were investigated. Simulation results show that with an increasing of channel aspect ratios, the streamwise variation of flow velocities decreases significantly, which is not the case for the spanwise ...


    By IWA Publishing

  • Report documents effects of 40 years of groundwater withdrawal

    The cumulative effects of 40 years of groundwater withdrawals in the Houston-Galveston region are documented in a report from the United States Geological Survey. Decades of extensive withdrawals have caused the land to sink, or subside. The Houston-Galveston region is one of the largest areas of land surface subsidence in the U.S., according to the agency. Water withdrawals started as early as ...


    By Fluence Corporation

  • Prediction of groundwater levels using evidence of chaos and support vector machine

    Many nonlinear models have been proposed to forecast groundwater level. However, the evidence of chaos in groundwater levels in landslide has not been explored. In addition, linear correlation analyses are used to determine the input and output variables for the nonlinear models. Linear correlation analyses are unable to capture the nonlinear relationships between the input and output ...


    By IWA Publishing

  • Horizontal Well Rehabilitation at NASA Facility

    A horizontal groundwater extraction well at an active NASA facility in Louisiana was impacted by mineral scaling and bio-fouling affecting operations of the groundwater pump and the treatment system. A flow reduction of over 50% was observed. Directional Technologies, Inc. performed a series of horizontal well rehabilitation activities, that increases flow by 58%, which including mechanical ...

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