hydrogeologist Articles

  • Dr. Hargis presents at Parma conference on aquifer risk & vulnerability

    On September 22, 2005, Dr. Dave Hargis presented a paper titled, 'Groundwater Degradation from Agricultural Pesticides in Volcanic Terrains – A Case History: Oahu, Hawaii.' The conference was the 2nd International Workshop on Aquifer Risk & Vulnerability held in Reggia di Colorno. The venue was 12 km outside of Parma, Italy, in the Palazzo dei Duchi, a historical fortress that served as the ...


    By Hargis + Associates Inc

  • Lake Construction Feasability Study, Saudi Arabia

    Reference Project: Lake Construction Feasability Study, Saudi Arabia The Arriyadh Development Authority (ADA) is responsible for developing the city of Riyadh and its surrounding area. The development plan of the ADA included the construction of an artificial lake bordering the Wadi Hanifah on the side opposite the historical town of Diriyah. The Wadi Hanifah is the biggest wadi in the vicinity ...

  • Water Resources Management and Modeling

    Hydrology is the science that deals with the processes governing the depletion and replenishment of water resources of the earth's land areas. The purpose of this book is to put together recent developments on hydrology and water resources engineering. First section covers surface water modeling and second section deals with groundwater modeling. The aim of this book is to focus attention on the ...


    By IWA Publishing

  • Future hydrogeologist wants to mitigate groundwater contamination

    NGWA continues its monthly spotlight look at the 2016 Len Assante Scholarship winners from the ...

  • Hydrogeology - A Global Perspective

    The field of groundwater hydrology and the discipline of hydrogeology have attracted a lot of attention during the past few decades. This is mainly because of the increasing need for high quality water, especially groundwater. This book, written by 15 scientists from 6 countries, clearly demonstrates the extensive range of issues that are dealt with in the field of hydrogeology. Karst ...


    By IWA Publishing

  • Karst groundwater: a challenge for new resources

    Karst aquifers have complex and original characteristics which make them very different from other aquifers: high heterogeneity created and organised by groundwater flow, large voids, high flow velocities up to several hundreds of m/h, high flow rate springs up to some tens of m3/s. Different conceptual models, known from the literature, attempt to take into account all these particularities. The ...


    By Springer

  • Regionalization of models for operational purposes in developing countries: an introduction

    This special edition is a compilation of papers delivered orally at the workshop on regionalization of models for operational purposes in developing countries held during the joint International Association of Hydrological Sciences (IAHS) and International Association of Hydrogeologists (IAH) International Convention in Hyderabad, India during September 2009. The overall theme of the convention ...


    By IWA Publishing

  • WMU Field Course Preps Future Hydrogeologists with Hands-On Experience

    Overview Students from around the country sign up for the Hydrogeology Field Course at Western Michigan University in order to gain experience with equipment and applications that will prepare them for the workplace in ways a textbook never could. Challenge In a competitive job market, it stands to reason that students who graduate with the most practical experience in their field will have an ...


    By In-Situ, Inc.

  • What is a Plume? and Why do I Care?

    From The National Groundwater Association   Most of you might question why I want to spend time discussing a subject that is outside of the more traditional ...


    By Arcadis

  • Trends, prospects and challenges in quantifying flow and transport through fractured rocks

    Among the current problems that hydrogeologists face, perhaps there is none as challenging as the characterization of fractured rock (Faybishenko and Benson 2000). This paper discusses issues associated with the quantification of flow and transport through fractured rocks on scales not exceeding those typically associated with single- and multi-well pressure (or flow) and tracer tests. As much of ...


    By Springer

  • 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 ...

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

    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 ...

  • Evaluating groundwater/surfacewater transition zones in ecological risk assessments

    Currently, there is a common perception that the discharge of contaminated groundwater to a surfacewater body does not pose an ecological risk if contaminant concentrations in surface-water samples are below analytical detection limits or at very low concentrations. The transition zone represents a unique and important ecosystem that exists between surface-water and the underlying ground-water, ...

  • A systematic approach for evaluation of capture zones at pump and treat systems

    This document describes a systematic approach for performing capture zone analysis associated with ground-water pump and treat (P&T) systems. A “Capture Zone” refers to the three-dimensional region that contributes the ground water extracted by one or more wells or drains (see Figure 1). A capture zone in this context is equivalent to the “zone of hydraulic containment”. If a contaminant ...

  • Free-Product Recovery Methods and Issues

    During my 33 years in the environmental field, I have been involved in a lot of sites with free product.  In the 1980’s light non-aqueous phase liquids (LNAPL) such as gasoline were removed by the following methods: Bailing with a hand bailer from a well Pumping with a 2 pump system (depression pump and product pump) Pumping with a total fluids pump and separating ...


    By Enviro-Equipment, Inc.

  • Example of water level data logger use - case study

    Geo Kamp Limited is pleased to present a typical hydrogeologic project using Heron Water Level Data Loggers (referred to as the dipperLog). The accompanying hydrographs represent the data collected for a Test Well located near Lake Simcoe (north of Toronto) in 2010. It was difficult to coordinate the schedule of the water well contractor due to inclement weather (bitterly cold) and the project ...


    By HERON Instruments Inc.

  • 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 ...


    By Fluence Corporation

  • Two doctors – both women – worlds apart in their areas of speciality – public health and environmental cleanup – yet they share a common bond

    People are not “born” communicators – to communicate effectively you have to want to do so – Gerberding and Macchiaroli are two professionals who understand the importance of being technically competent and equally conversant – what can we learn from them? Public relations professionals dream of working with executives that understand not only the importance of the function but that are also well ...


    By ARMSTRONG and Associates

  • High-Resolution Site Characterization with Multilevel Systems

    Within the last few years, the U.S. EPA added a new focus area on high-resolution site characterization (HRSC) to their Contaminated Site Clean-Up Information (CLU-IN) website. The U.S. EPA’s definition of HRSC is: “High-resolution site characterization (HRSC) strategies and techniques use scale-appropriate ...


    By Solinst Canada Ltd.

  • Integrated Site Closure Achieves Business and Regulatory Goals

    A new concept for cleanup of contaminated properties and hazardous waste sites applicable under federal and state regulatory programs is helping clients achieve both business and regulatory goals at their sites. The concept, called 'Integrated Site Closure', is the seamless integration and delivery of services necessary to reach regulatory closure of contaminated properties. Regulatory closure ...


    By AECOM

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