groundwater visualization Articles

  • 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

  • Data Management and Visualization for Interim Measure Plan - Case Study

    Challenge Groundwater impact was discovered at the bedrock surface off-site and the client needed to quickly be able to access a long history of site data and develop a conceptual site model. Visually understanding where the impacted groundwater was in relation to property boundaries, surface water and stratigraphic features was critical for the client to determine next steps. ...


    By Antea Group - USA

  • Visualization of Transparent Exopolymer Particles (TEP) in various source waters.

    Transparent Exopolymer Particles (TEP) have been implicated as an important factor in the development of aquatic biofilm on membranes and other surfaces. We have recorded TEP and associated bacteria from four different kinds of source water (coastal seawater, freshwater lake, secondary treated wastewater and saline, high sulfide content groundwater from a deep well) as visualized by light and ...

  • A Natural Modeling Approach to Pumping Wells in Visual MODFLOW Flex

    The Waterloo Hydrogeologic software development team is constantly making improvements based on the feedback and suggestions from our worldwide users. Recently, our focus has been on redesigning the pumping wells boundary condition in Visual MODFLOW Flex. We chose to emulate the behavior from Visual MODFLOW Classic which provides a natural approach of defining the well discharge rate over the ...


    By Waterloo Hydrogeologic

  • Environmental Data Management for Groundwater Contamination

    ESdat environmental data management software has been used to manage and report on large datasets generated from an investigation of groundwater contamination on an industrial facility in Adelaide. ESdat was used in managing site data and the maintenance of conceptual model and time series outputs at a complex site over an extended period. Leakages of TCE and the subsequent ...

  • Novel carotenoid-based biosensor for simple visual detection of arsenite: characterization and preliminary evaluation for environmental application

    A novel whole-cell arsenite biosensor was developed using the photosynthetic bacterium Rhodopseudomonas palustris no. 7 and characterized. A sensor plasmid containing the operator-promoter region of the ars operon and arsR gene from Escherichia coli and the crtI gene from R. palustris no. 7 was introduced into a blue-green mutant with crtI deleted, R. palustris no. 711. The biosensor changed ...

  • Sharpening Your Way to Better Groundwater Models

    There is a well-known fable about a wood cutter who was hired by a timber merchant to cut down trees. This well sought-after job paid well and had excellent working conditions. The wood cutter wanted to succeed in his new job so the first day he worked hard and cut down 18 trees. Determined to do even better on the second day, the wood cutter tried harder but only cut down 15 trees. Day after day ...


    By Waterloo Hydrogeologic

  • Case Study - Groundwater Monitoring Network Investigation - Okanagan Kootenay Region

    Western Water Associates was tasked with analyzing groundwater chemistry data, recommending modifications of monitoring networks, and enhancing the capability of client staff to interpret data and present findings. They selected EnviroInsite as their principal data visualization application and made rich use of its capabilities to present spatial and temporal patterns in water quality ...


    By EI LLC

  • Groundwater flow and transport model of the Estonian Artesian Basin and its hydrological developments

    The sophisticated research and management problems of the Estonian water environment are considered by means of holistic modelling. The model elaborated is based on the computer code Visual MODFLOW Classic. The model encompasses the entire Estonian Artesian Basin (EAB) and the border districts of Russia and Latvia. It involves all main aquifers and aquitards on an area of 88,000 km2. The main ...


    By IWA Publishing

  • Low Flow Groundwater Sampling Using RotaPump Inertial Lift Pump

    This article tells you how to perform low flow groundwater sampling using a portable, surface-mounted pump with no decontamination required before each use and  no chance of cross contamination between wells. An inertial lift pump moves a dedicated (stored in the well) pumping tube rapidly up and down.  A one-way valve on the bottom admits water on the down stroke and ...


    By RotaPump, Inc

  • Case study - Low-flow groundwater sampling on a nuclear site

    Nuclear licensed site use of low-flow groundwater sampling shows: Reduced time, reduced quantity of purge water – both thus reducing cost - and reduced risk of operator contact especially with potentially radioactive-contaminated purge water thanks to a self-contained enclosed system. One of the biggest headaches on site is the purge water and the expense of getting rid of it – after ...


    By Geotech

  • Micro level groundwater flow and transport model to predict future spread of pollution for Ambur sub–basin, Tamil Nadu, India

    Realistic groundwater flow and transport models have greater use in understanding, predicting and managing groundwater systems in water–scarce and polluted areas. In this study, micro–level flow and transport models were developed, using the Visual MODFLOW software, for the highly polluted Ambur sub–basin, Tamil Nadu for the purpose of predicting pollution migration in the next 50 years and ...


    By Inderscience Publishers

  • Application of the membrane fouling simulator to determine biofouling potential of antiscalants in membrane filtration

    In treatment of groundwater with reverse osmosis, the applied antiscalant can significantly contribute to the formation of biofouling, especially when legislation enforces the use of biodegradable, phosphorous-free products. As an alternative to extensive piloting, the use of the membrane fouling simulator (MFS) is proposed here to assess the biomass growth potential of different antiscalants. ...


    By IWA Publishing

  • Study of water-table behaviour for the Indian Punjab using GIS

    The state of Punjab (India) has witnessed a spectacular increase in agricultural production in the last few decades. This has been possible due to high use of fertilizers, good quality seeds and increased use of water resources. This increased demand of water resources has resulted in extensive use of groundwater in the central districts of the state and surface water (canals) in South-West ...


    By IWA Publishing

  • Evaluating Cleanup at Hamilton Army Airfield Using EQuIS and ArcGIS

    The Sacramento District, US Army Corps of Engineers, is implementing EarthSoft's EQuIS and ArcGIS for better management, analysis, and response to landfill remedial activities being conducted at the former Hamilton Army Airfield. This former Air Force Base located four miles south of the city of Novato, on San Pablo Bay, in Marin County, California, is undergoing environmental clean-up as it is ...


    By EarthSoft, Inc

  • ASC Tech Services

    Environmental contamination is risky business, to access risk, high-tech and unique geophysical site characterization methods can be employed. By utilizing these high tech gadgets that describe the ground and detail exactly what can’t be seen. Just like the Silicon Valley, new methods have surfaced and now more than ever it is easy to characterize the subsurface using direct push tools. ...


    By ASC Tech Services

  • A framework for accurate geospatial modeling using image ranking and machine learning

    There is a large class of modeling problems where the complexity of the underlying phenomena is overwhelming and hence the accuracy of mathematical models is limited. Our approach to this class of problems is to design frameworks that bring together physically based and data-driven models, and incorporate the tacit knowledge of experts by providing visual exploration and feedback capabilities. ...


    By IWA Publishing

  • Integration of Subsurface Data Management and GIS to Facilitate Model Calibration

    Abstract The development of numerical codes, as well as pre- and post-processors to support these codes, has made the discipline of groundwater modelling increasingly more automated and efficient. The value of such modelling is reliant on the site-specific data used to build and calibrate the models. The integration of EarthSoft's EQuISÒ Geology and any of several popular modelling environments ...


    By EarthSoft, Inc

  • Managing the Earth from Space: Satellite and sensing technology in water management

    Approximately 200 miles above the Earth’s surface, two satellites circle the planet, always between 106 and 193 miles apart. But while these twins—called Gravity Recovery and Climate Experiment (GRACE)—live in space, they’re providing invaluable assistance in managing natural resources on the ground. GRACE has created a unique picture of ...

  • High resolution accurate mass spectrometry as a technique for characterization of complex lysimeter leachate samples

    Lysimeter studies can be used to identify and quantify soil degradates of agrochemicals (“metabolites”) which have the potential to leach to groundwater. However, the apparent metabolic profile of such lysimeter leachate samples will often be significantly more complex than would be expected in true groundwater samples. This is particularly true for S‐metolachlor, which has an extremely ...


    By John Wiley & Sons, Ltd.

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