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Articles 31 - 60 of 93
Full-Text Articles in Physical Sciences and Mathematics
Adapting Near-Ultraviolet Colorimetry For Long-Term In Situ Monitoring Of Hexavalent Chromium In Groundwater Aquifers, Janine Carter
Adapting Near-Ultraviolet Colorimetry For Long-Term In Situ Monitoring Of Hexavalent Chromium In Groundwater Aquifers, Janine Carter
Graduate Student Theses, Dissertations, & Professional Papers
This paper briefly describes sources of hexavalent chromium [Cr(VI)] and the risk it poses to human health and the environment; current methods used to regulate, monitor, and measure Cr(VI); the basic design of a submersible, direct-reading sensor in development for long-term monitoring of Cr(VI) concentration in natural waters; and the means developed to correct sensor readings for two common analytical interferences, turbidity and pH, that could lead to an incorrect measurement of Cr(VI). The principal purposes of this study are to analyze the current methods used to compensate for sample turbidity, to develop methods to compensate for sample pH, and …
Hydrologic Controls Of Coastal Groundwater Discharge In Southern Taylor Slough, Everglades National Park, Florida, Edward Linden
Hydrologic Controls Of Coastal Groundwater Discharge In Southern Taylor Slough, Everglades National Park, Florida, Edward Linden
FIU Electronic Theses and Dissertations
This project empirically determined the controls of groundwater discharge potential and surface water chemistry in southern Taylor Slough, Everglades National Park, Florida. Potential for groundwater discharge was calculated as the difference in equivalent freshwater stage between groundwater and surface water on a daily basis for two sites (upland and coastal) along southern Taylor Slough. Upstream water stages were shown to vary most similarly to the timing of groundwater discharge potential in coastal Taylor Slough. Surface water major ion chemistry did not apparently change as a result of groundwater discharge potential. Surface water major ion chemistry at the coastal site was …
Survey Of Two Perfluorinated Organic Compounds (Pfoa And Pfhxa) In Water And Biota Surrounding A Polyfluorinated Chemical Plant, Kevin S. Dillon
Survey Of Two Perfluorinated Organic Compounds (Pfoa And Pfhxa) In Water And Biota Surrounding A Polyfluorinated Chemical Plant, Kevin S. Dillon
Gulf and Caribbean Research
Perfluorooctanoic acid (PFOA) and perfluorohexanoic acid (PFHxA) concentrations were measured in water and biota samples collected within and near a polyfluorinated chemical plant in coastal Mississippi. Effluents from the site and from the local public water treatment plant were sampled along with municipal water supplies, shallow groundwater beneath the site, nearby surface waters, and local biota. Highest concentrations were from stormwater ([PFOA] = 85—530 ng/l; PFHxA = 140—590 ng/l) and shallow groundwaters ([PFOA] = 44—1000 ng/l; PFHxA = 210—3100 ng/l) collected at the site. The local public water treatment effluent also had relatively high PFHxA concentrations (310—590 ng/l). Intermediate PFOA …
Groundwater Trend Analysis And Salinity Risk Assessment For The South-West Agricultural Region Of Western Australia, 2007–12, G Paul Raper, Russell Speed, John Andrew Simons, A L. Killen, Andrew Blake, A T. Ryder, Rosemary H. Smith, Grant Stainer, L Bourke
Groundwater Trend Analysis And Salinity Risk Assessment For The South-West Agricultural Region Of Western Australia, 2007–12, G Paul Raper, Russell Speed, John Andrew Simons, A L. Killen, Andrew Blake, A T. Ryder, Rosemary H. Smith, Grant Stainer, L Bourke
Resource management technical reports
Dryland salinity is a hydrologically driven land degradation hazard in the south-west agricultural region of Western Australia (WA). Shallow-rooted annual crops and pastures transpire significantly less water than the native vegetation they replaced, leading to an increase in recharge, rising groundwater levels and the development of shallow watertables in areas where often none existed previously. Rising groundwater levels mobilise soluble salts, naturally stored at high concentrations in the regolith. These salts can be concentrated in the root zone of vegetation by evapotranspiration.
Noble Gases Identify The Mechanisms Of Fugitive Gas Contamination In Drinking-Water Wells Overlying The Marcellus And Barnett Shales, Thomas H. Darrah, Avner Vengosh, Robert B. Jackson, Nathaniel R. R. Warner, Robert J. Poreda
Noble Gases Identify The Mechanisms Of Fugitive Gas Contamination In Drinking-Water Wells Overlying The Marcellus And Barnett Shales, Thomas H. Darrah, Avner Vengosh, Robert B. Jackson, Nathaniel R. R. Warner, Robert J. Poreda
Dartmouth Scholarship
Horizontal drilling and hydraulic fracturing have enhanced energy production but raised concerns about drinking-water contamination and other environmental impacts. Identifying the sources and mechanisms of contamination can help improve the environmental and economic sustainability of shale-gas extraction. We analyzed 113 and 20 samples from drinking-water wells overlying the Marcellus and Barnett Shales, respectively, examining hydrocarbon abundance and isotopic compositions (e.g., C2H6/CH4, δ13C-CH4) and providing, to our knowledge, the first comprehensive analyses of noble gases and their isotopes (e.g., 4He, 20Ne, 36Ar) in groundwater near shale-gas wells. We addressed two questions. (i) Are elevated levels of hydrocarbon gases in …
Slides: Best Management Practices For Oil And Gas Development And Comparative Water Quality Database Of Regulations Relating To Shale Oil And Gas, Matt Samelson, University Of Colorado Boulder. Getches-Wilkinson Center For Natural Resources, Energy, And The Environment. Intermountain Oil And Gas Bmp Project
Slides: Best Management Practices For Oil And Gas Development And Comparative Water Quality Database Of Regulations Relating To Shale Oil And Gas, Matt Samelson, University Of Colorado Boulder. Getches-Wilkinson Center For Natural Resources, Energy, And The Environment. Intermountain Oil And Gas Bmp Project
Fracking, Water Quality and Public Health: Examining Current Laws and Regulations (March 20)
Presenter: Matt Samelson, J.D., Attorney, Consultant for Intermountain Oil and Gas Best Management Practices (BMP) Project, Getches-Wilkinson Center for Natural Resources, Energy and the Environment, University of Colorado Law School
34 slides
On Target For People And Planet: Setting And Achieving Water-Related Sustainable Development Goals, Julie Van Der Bliek, Peter G. Mccornick, James Clarke
On Target For People And Planet: Setting And Achieving Water-Related Sustainable Development Goals, Julie Van Der Bliek, Peter G. Mccornick, James Clarke
Daugherty Water for Food Global Institute: Faculty Publications
Our specific focus in this book is on securing water for sustainable food production. This links to sustainable water resources management, delivering on the water supply and sanitation requirements and provisioning water for energy and the urban sector. A specific intent is to ensure that the realities in low- and middle-income countries in Africa and Asia are recognized and to provide practical pathways to change that fit these realities and the aspirations of those countries. This will help to prepare for the next step in the SDG [sustainable development goals] process: devolving the SDGs to the national level. It will …
Shallow Groundwater Monitoring Associated With The Deep Saline Reservoir Co2 Storage Test In Hancock County, Kentucky, E. Glynn Beck
Shallow Groundwater Monitoring Associated With The Deep Saline Reservoir Co2 Storage Test In Hancock County, Kentucky, E. Glynn Beck
Report of Investigations--KGS
A carbon dioxide injection test well was drilled in 2009 to a depth of 8,126 ft below ground surface in Hancock County, Kentucky. Six hundred ninety tons of CO2 was successfully injected into Knox Group saline aquifers. Two domestic wells (MB and GB) and two domestic springs (CA and RC) were sampled to monitor any potential changes in groundwater quality associated with possible migration of CO2 from deeper saline aquifers into shallow freshwater aquifers. The four sites were sampled for pH, bicarbonate, total dissolved solids, turbidity, anions, total dissolved metals, dissolved inorganic carbon, total CO2, and …
Hydrogeologic Investigations Of Pavement Subsidence In The Cumberland Gap Tunnel, James S. Dinger, James C. Currens, Junfeng Zhu, Steven E. Webb, Brad W. Rister, R. C. Graves, David L. Allen, Tim C. Scully
Hydrogeologic Investigations Of Pavement Subsidence In The Cumberland Gap Tunnel, James S. Dinger, James C. Currens, Junfeng Zhu, Steven E. Webb, Brad W. Rister, R. C. Graves, David L. Allen, Tim C. Scully
Report of Investigations--KGS
Cumberland Gap Tunnel was constructed under Cumberland Gap National Historical Park in 1996 to improve transportation on a segment of U.S. 25E, connecting Kentucky and Tennessee and restoring Cumberland Gap to its historical appearance.
The concrete pavement in the tunnel started to subside in 2001. Ground penetrating radar surveys revealed voids in many areas of the limestone roadbed aggregate beneath the pavement. To investigate possible hydrogeologic processes that may have caused favorable conditions for voids to form in the aggregate, we studied geology, groundwater flow, and groundwater chemistry in the tunnel using a variety of methods, including bore drilling, packer …
A Review Of The Broome Sandstone Aquifer In The La Grange Area, Robert J. Paul, Richard J. George Dr, Peter Gardiner
A Review Of The Broome Sandstone Aquifer In The La Grange Area, Robert J. Paul, Richard J. George Dr, Peter Gardiner
Resource management technical reports
Land use in the West Kimberley near Broome, Western Australia, is dominated by cattle grazing on pastoral stations, dispersed mining activity and tourism. Irrigated agriculture has developed but is at a small scale. There is interest from pastoralists and horticultural companies to expand irrigated agriculture, and pastoral diversification and mosaic irrigation systems have been proposed. However, if irrigated agriculture is to expand, it must be viable and meet community and regulatory requirements. Developing secure and sustainable water resources is critical
This review is focussed on the La Grange groundwater subareas (La Grange area). Its purpose is to summarise the existing …
Observations Of Localised Effects Of The Busselton Compensating Basins On Surface Water, Groundwater And Soil Salinity, D L. Bennett, Richard J. George Dr
Observations Of Localised Effects Of The Busselton Compensating Basins On Surface Water, Groundwater And Soil Salinity, D L. Bennett, Richard J. George Dr
Resource management technical reports
Between 2001 and 2009 the Water Corporation constructed three flood-compensating basins on farmland in the Vasse and Sabina river catchments, upstream of in the city of Busselton. The basins are designed to reduce the risk of flooding in urban areas of Busselton by temporarily storing and then regulating runoff during flood events. This report fulfils the reporting requirements of a contract between the Water Corporation and the Department of Agriculture and Food. Data relating to the local groundwater and surface-water dynamics, salinity, nutrients and pH, plus changes to shallow and deep-soil salinity (from repeat ground-based electromagnetic induction [EM] surveying), was …
Groundwater Chemistry Of The Weaber Plain: Preliminary Results, Adam Lillicrap, Paul Raper, Richard J. George Dr, D L. Bennett
Groundwater Chemistry Of The Weaber Plain: Preliminary Results, Adam Lillicrap, Paul Raper, Richard J. George Dr, D L. Bennett
Resource management technical reports
In 2008, the Ord Irrigation Expansion Project was approved by the Western Australian Government to develop irrigated agriculture on the Weaber Plain. Construction of the M2 supply channel connecting the ORIA and the Weaber Plain, and the final period of irrigation design, environmental management and related approval processes, commenced later in 2009. This process followed a protracted period of public and private industry planning and environmental assessment (Kinhill 2000). This report summarises an analysis of groundwater salinity trends on the Ivanhoe and Weaber plains and the preliminary results of an intensive water-quality sampling program carried out in 2010 as part …
Slides: Master Development Plans (Mdps) / Geographic Area Plans (Gaps): Comprehensive Planning Tools For Oil And Gas Projects, Allen B. Crockett
Slides: Master Development Plans (Mdps) / Geographic Area Plans (Gaps): Comprehensive Planning Tools For Oil And Gas Projects, Allen B. Crockett
Best Management Practices (BMPs): What? How? And Why? (May 26)
Presenter: Mary Bloomstran, Edge Environmental
20 slides
Hydrological Impacts Of Integrated Oil Mallee Farming Systems, D L. Bennett, John Andrew Simons, Russell Speed
Hydrological Impacts Of Integrated Oil Mallee Farming Systems, D L. Bennett, John Andrew Simons, Russell Speed
Resource management technical reports
This study reports on the results from investigations at four sites into the effect of commercial-scale oil mallee systems on localised groundwater systems over seven years. It also reports the results of the use of a numerical model to forecast potential longer term impacts.
The Hydrology Of The Carroll Cave-Toronto Springs System: Identifying And Examining Source Mixing Through Dye Tracing, Geochemical Monitoring, Seepage Runs, And Statistical Methods, Benjamin Verlinden Miller
The Hydrology Of The Carroll Cave-Toronto Springs System: Identifying And Examining Source Mixing Through Dye Tracing, Geochemical Monitoring, Seepage Runs, And Statistical Methods, Benjamin Verlinden Miller
Masters Theses & Specialist Projects
In karst areas relationships between activities occurring on the surface and the overall health of the subsurface environment are often highly interconnected. However, the complex nature of karst flow systems can often make identification of these connections difficult. Carroll Cave, a large stream cave system located in the central Missouri Ozarks, is known for its biological and speleological significance. A dye tracing project to delineate a Carroll Cave recharge area through dye tracing has identified an area of 18.5 km2 which contributes water to the cave. The water from Thunder River within Carroll Cave was positively traced to eight springs …
Research Poster: From Lab To Basin Scale: A Look At Changes In Evaporative And Transpirative Processes In Arid And Semi-Arid Shallow Groundwater Systems, Jeremy E. Koonce, Michael H. Young, Dale A. Devitt, Zhongbo Yu
Research Poster: From Lab To Basin Scale: A Look At Changes In Evaporative And Transpirative Processes In Arid And Semi-Arid Shallow Groundwater Systems, Jeremy E. Koonce, Michael H. Young, Dale A. Devitt, Zhongbo Yu
2010 Annual Nevada NSF EPSCoR Climate Change Conference
Research poster
Water Management Plan For The Town Of Pingelly, Mark Pridham
Water Management Plan For The Town Of Pingelly, Mark Pridham
Resource management technical reports
No abstract provided.
Water Management Plan For The Town Of Perenjori, Mark Pridham
Water Management Plan For The Town Of Perenjori, Mark Pridham
All other publications
The Rural Towns – Liquid Assets (RT–LA) project was established with the aim of integrating salinity, waterlogging and flooding control with development of new water supplies in wheatbelt towns, and where possible, finding ways of putting the excess water to commercial use. Following the identification of effective integrated water management strategies, these have been applied to the 15 Shires participating in the DAFWA led RT–LA project. This report summarises the outcomes from all scientific investigations undertaken for Perenjori. In addition it presents the water management options, a preliminary analysis of those options and the priority recommended ones. Due to the …
Assessment Of Groundwater Quality In An Abandoned Feedlot, Henderson County, Kentucky: Data Report, E. Glynn Beck, James S. Dinger, John Grove, Eugenia Pena-Yewtukhiw
Assessment Of Groundwater Quality In An Abandoned Feedlot, Henderson County, Kentucky: Data Report, E. Glynn Beck, James S. Dinger, John Grove, Eugenia Pena-Yewtukhiw
Information Circular--KGS
A three-phase project investigated the influence of past and present agricultural practices on groundwater resources in the Western Kentucky Coal Field. Phase II concentrated on past practices, specifically those associated with an abandoned dairy feedlot and an old homestead. Results of phase II analyses are presented in this report.
Assessment Of Groundwater Quality In A Remediated Abandoned Feedlot, Henderson County, Kentucky: Data Report, E. Glynn Beck, James S. Dinger, John Grove, Eugenia Pena-Yewtukhiw
Assessment Of Groundwater Quality In A Remediated Abandoned Feedlot, Henderson County, Kentucky: Data Report, E. Glynn Beck, James S. Dinger, John Grove, Eugenia Pena-Yewtukhiw
Information Circular--KGS
A three-phase project investigated the influence of past and present agricultural practices on groundwater resources in the Western Kentucky Coal Field. Phase III concentrated on an abandoned dairy feedlot that had been remediated. Results of phase III analyses are presented in this report.
Sources And Occurrences Of Nonpoint-Source Chemicals In Groundwater, Jackson Purchase Region, Kentucky, R. Stephen Fisher, E. Glynn Beck
Sources And Occurrences Of Nonpoint-Source Chemicals In Groundwater, Jackson Purchase Region, Kentucky, R. Stephen Fisher, E. Glynn Beck
Report of Investigations--KGS
Nitrate concentrations that exceed U.S. Environmental Protection Agency drinking-water standards have been reported in Jackson Purchase Region groundwater since the 1960's. More recently, other nonpoint-source chemicals such as pesticides and volatile organic compounds have also been found. The sources of these chemicals and the pathways by which they reach domestic groundwater supplies must be determined to protect human health and to design effective land-management practices.
To investigate the occurrence of nonpoint-source chemicals in Jackson Purchase groundwater, 60 wells were selected on the basis of geographic location, hydrostratigraphic unit penetrated, and well type (bored or drilled); distances to row crops, known …
Slides: Disappearing Roads--An Efd Project: An Exploration Into Low Impact And Efficient Gas Field Drilling, Charles Dolan
Slides: Disappearing Roads--An Efd Project: An Exploration Into Low Impact And Efficient Gas Field Drilling, Charles Dolan
Best Practices for Community and Environmental Protection (October 14)
Presenter: Rich Haut, Houston Advanced Research Center (HARC), for Dr. Charles Dolan, University of Wyoming, Environmentally Friendly Drilling Program
25 slides
Setting Targets For Resource Condition In Lake Towerrinning Catchment, G Paul Raper, Leon Vanwyk
Setting Targets For Resource Condition In Lake Towerrinning Catchment, G Paul Raper, Leon Vanwyk
Resource management technical reports
No abstract provided.
The Initial Hydrological Effect Of Deep Drains At Wallatin Creek : (2006-2008), Richard J. George Dr, Grant Stainer
The Initial Hydrological Effect Of Deep Drains At Wallatin Creek : (2006-2008), Richard J. George Dr, Grant Stainer
Resource management technical reports
No abstract provided.
Setting Targets For Resource Condition In Date Creek Catchment, Leon Van Wyk, Gregory Paul Raper
Setting Targets For Resource Condition In Date Creek Catchment, Leon Van Wyk, Gregory Paul Raper
Resource management technical reports
No abstract provided.
Oyster Harbour Catchment Appraisal 2007, Ron Master, South Coast Agricultural Rca Team
Oyster Harbour Catchment Appraisal 2007, Ron Master, South Coast Agricultural Rca Team
Resource management technical reports
No abstract provided.
Groundwater Quality In Watersheds Of The Big Sandy River, Little Sandy River, And Tygarts Creek (Kentucky Basin Management Unit 5), R. Stephen Fisher, Bart Davidson, Peter T. Goodmann
Groundwater Quality In Watersheds Of The Big Sandy River, Little Sandy River, And Tygarts Creek (Kentucky Basin Management Unit 5), R. Stephen Fisher, Bart Davidson, Peter T. Goodmann
Report of Investigations--KGS
The Kentucky Geological Survey and the Kentucky Division of Water are evaluating groundwater quality throughout the commonwealth to determine regional conditions, assess impacts of nonpoint-source contaminants, provide a baseline for tracking changes, and provide essential information for environmental-protection and resource-management decisions. These evaluations include summarizing existing regional groundwater-quality data and reporting the results of expanded, focused groundwater collection programs in specific areas. This report summarizes groundwater sampling and analysis in Kentucky basin management unit 5 (watersheds of the Big Sandy River, Little Sandy River, and Tygarts Creek in eastern Kentucky).
Thirty wells and springs were sampled quarterly between the fall …
Drainage Benchmarking In The Northern Agricultural Region : Landholder Survey, Alison Beattie, Angela Stuart-Street
Drainage Benchmarking In The Northern Agricultural Region : Landholder Survey, Alison Beattie, Angela Stuart-Street
Resource management technical reports
No abstract provided.
Groundwater Quality In Watersheds Of The Kentucky River, Salt River, Licking River, Big Sandy River, Little Sandy River, And Tygarts Creek (Kentucky Basin Management Units 1, 2, And 5), R. Stephen Fisher, Bart Davidson, Peter T. Goodmann
Groundwater Quality In Watersheds Of The Kentucky River, Salt River, Licking River, Big Sandy River, Little Sandy River, And Tygarts Creek (Kentucky Basin Management Units 1, 2, And 5), R. Stephen Fisher, Bart Davidson, Peter T. Goodmann
Report of Investigations--KGS
The Kentucky Geological Survey, University of Kentucky, and the Kentucky Division of Water (of the Kentucky Environmental and Public Protection Cabinet) are evaluating groundwater quality throughout the commonwealth to determine regional conditions, assess impacts of nonpoint-source pollutants, establish a basis for detecting changes, and provide essential information for environmental-protection and resource-management decisions.
These evaluations are being conducted in stages. Under the Kentucky Watershed management Framework, Kentucky’s 12 major river basins and tributaries of the Ohio River were grouped into five basin management units (BMU’s). A previous report summarized and evaluated groundwater quality in BMU 3 (watersheds of the Upper Cumberland …
Impact Of More Intensive Grazing On Nitrogen And Phosphorus In Shallow Aquifers Of The Southern Perth Basin, D L. Bennett, Patrick Donnelly, Peter J. Tille
Impact Of More Intensive Grazing On Nitrogen And Phosphorus In Shallow Aquifers Of The Southern Perth Basin, D L. Bennett, Patrick Donnelly, Peter J. Tille
Resource management technical reports
This study reports on the nutrient content, pH and salinity of groundwater samples collected from the watertable and within the Superficial and the upper Leederville Aquifers from the Southern Perth Basin, south of Pinjarra, Western Australia. Sampling was undertaken to determine the impact of intensification of broadscale grazing on groundwater nutrients in the area.