groundwater flow Articles

  • Modelling of groundwater flow and heat transport

    Client: Transport for London Location: London Services: Groundwater Modelling Issues: Identifying the potential effects of pumping excess heat to the Chalk aquifer Summary: ESI was commissioned to test the feasibility of one of the possible solutions identified to prevent temperatures on the ...

  • Groundwater: Low-flow Purging and Sampling

    Significant timesavings, improved sample process integrity, quality assurance and minimal quantities of potentially contaminated purge water to manage - are attractive as the focus on groundwater quality sharpens and economics demand best cost-benefit based methods Water has become a vitally important resource.  Maintaining its quality and quantity and avoiding pollution are set to be ...


    By Geotech

  • Seven Ways Your Facility Isn’t Meeting Effluent Regulations and How to Solve Them

    Whether you own, operate, or help manage a municipal or industrial facility that deals with wastewater, it’s important to understand how wastewater treatment can play a significant role in the overall health of your business, especially when it comes to meeting effluent regulations. This is an important part of the wastewater treatment process to consider, as ignoring it could earn your ...


    By SAMCO Technologies, Inc.

  • Impact of Groundwater Abstractions on River Flows (IGARF)

    This project was undertaken to review the current practice for the evaluation of groundwater abstractions on river and stream flows when assessing groundwater abstraction licence applications. This research contract formed Phase I of the National Groundwater and Contaminated Land Centre’s IGARF programme. The primary objectives of the project were to present a reasoned, robust and ...

  • Low-Flow Purging Reduces Management of Contaminated Groundwater

    Purging a monitoring well prior to sampling removes stagnant water in the well casing and ensures collection of groundwater samples representative of formation water. Traditionally, a number of well casing volumes are removed (from three to five) and water stabilization parameters are monitored during removal of the casing volumes. Temperature, pH and specific conductance are routinely monitored ...


    By QED Environmental Systems

  • Norfolk CC tackle groundwater contamination with low-flow

    Quick and easy access in deep wells Geotech low flow groundwater analysis equipment has enabled quick and easy access to samples at 2m intervals down a 28m screen in deep boreholes. Elizabeth Guilford of Norfolk County Council hired the low flow kit from Geotech and used it on a Norfolk CC landfill where leachate contamination of groundwater was suspected. Samples taken at 2m intervals ...


    By Geotech

  • An OpenMI module for the groundwater flow simulation programme Feflow

    The OpenMI standard defines an interface that allows time-dependent models to exchange data at runtime. The migration of a flow simulation programme to OpenMI compliance usually requires changes in the source code or even a reorganisation of the programme sequence. Users of commercial flow simulation programmes depend on the software producer if they want to couple their models according to the ...


    By IWA Publishing

  • A refined groundwater flow model of the shallow aquifer in Tianjin Municipality, China

    The assembly of a groundwater flow model for the shallow aquifer in Tianjin Municipality is outlined in this paper. Tianjin Municipality was selected because of its complicated hydrogeological conditions and rich data, which could be used to test a refined groundwater flow model for the shallow aquifer. When a shallow groundwater flow model is being assembled its recharge and discharge ...


    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

  • Groundwater flow modeling to support water management scenarios – the Bekaa Valley, Lebanon

    The Italian Ministry of Foreign Affairs funded a project aimed at developing tools for water management in the Bekaa valley, Lebanon. The Lebanese Ministry of Energy and Water implemented the project, supported by the University of Milan Department of Agricultural and Environmental Sciences (DISAA). The geologic framework consists of a cretacean-eocean carbonatic structure, crossed by a fracture ...


    By Tethys srl

  • A possible modification of groundwater flow equation using coordinate transformations

    We described a groundwater model with prolate spheroid coordinates, and introduced a new parameter, namely τ the silhouette influence of the geometric under which the water flows. At first, we supposed that the silhouette influence approaches zero; under this assumption, the modified equation collapsed to the ordinary groundwater flow equation. We proposed an analytical solution to ...


    By IWA Publishing

  • Groundwater Remediation at Low Flow/Low Permeability Sites using HRC

    Rocky Flats Environmental Technology Site (RFETS) is located near Golden, Colorado. A groundwater plume of tetrachlorethene (PCE) and other volatile organic compounds (VOCs) developed at the PU&D Yard site as a result of prior spills at this location. A treatability study evaluated the effectiveness of the Hydrogen Release Compound (HRC®) in low-flow groundwater regimes. HRC is a proprietary, ...


    By REGENESIS

  • Groundwater Flow Modeling of Gundal Sub-basin in Kabini River Basin, India

    Abstract: Accurate estimation of groundwater recharge is extremely important for proper management of groundwater system especially in semi-arid regions. Many different approaches exist for estimating recharge. This study deals with groundwater modeling for assessing the groundwater balance and estimating the recharge in the Gundal sub-basin, which is located in a semi-arid portion of the Kabini ...


  • Impact of pumping in open pit mining on groundwater flow: a case study

    The groundwater flow behaviour was analysed during pre-monsoon, monsoon, and post-monsoon seasons. At first, the groundwater model was analysed in the steady state, and then the same was applied in the transient state to predict the spatio-temporal behaviour of groundwater in the region. Transient flow model was also developed to estimate the potential impact of pumping of groundwater due to ...


    By Inderscience Publishers

  • 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

  • Case study -Norfolk County Council tackle groundwater contamination with low-flow

    Geotech low flow groundwater analysis equipment has enabled quick and easy access to samples at 2m intervals down a 28m screen in deep boreholes. Elizabeth Guilford of Norfolk County Council hired the low flow kit from Geotech and used it on a Norfolk CC landfill where leachate contamination of groundwater was suspected. Samples taken at 2m intervals close to elevation of the suspected ...


    By Geotech

  • 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

  • The importance of preferential flow in controlling groundwater recharge in tropical Africa and implications for modelling the impact of climate change on groundwater resources

    An improved water table fluctuation technique for estimating recharge is applied to a sustained (10-year) groundwater level monitoring record in Uganda, a rare dataset for tropical Africa, and compared against results from soil moisture balance models (SMBMs) and unsaturated flow models. The results show that recharge is directly proportional to rainfall (long-term average rainfall is around 1200 ...


    By IWA Publishing

  • Keeping/ reconstituting groundwater

    In urban areas the rainwater often is (was) fast drained away. That leads to a shift in the water balance, infiltration and evaporation declined compared with the natural conditions. Caused by the missing infiltration, the groundwater level decline, which could have irreversible consequences for ecosystems like wetlands, lakes or rivers (because of missing low flow runoff). ...


    By IWA Publishing

  • Groundwater Remediation Strategies Tool

    This guide provides strategies for focusing remediation efforts on 1) the change in contaminant mass flux in different subsurface transport compartments (e.g. the vadose zone, smear zone or a zone within an aquifer of interest) and 2) the change in remediation timeframe. In this approach, groundwater flow and contaminant concentration data are combined to estimate the rate of contaminant mass ...


    By Solinst Canada Ltd.

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