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2014

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Articles 571 - 600 of 769

Full-Text Articles in Water Resource Management

U.S. Drought Monitor, June 3, 2014, Richard Tinker Jun 2014

U.S. Drought Monitor, June 3, 2014, Richard Tinker

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for June 3, 2014 (6/3/14) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


The Role Of Water In The Rise, Prominence, And Decline Of Nabataean Petra, Dennis Cummins Jun 2014

The Role Of Water In The Rise, Prominence, And Decline Of Nabataean Petra, Dennis Cummins

Dissertations, Theses, and Capstone Projects

This paper evaluates the rise of Nabataean Petra, its prominence, and eventual decline. The predominant context is effective water management as a pivotal driving factor in the growth of the Nabataean kingdom, which fostered an environment in which its famous incense trade could develop. Rising incense demand was the catalyst for growth from the first century BC through the first century AD; in AD 106 when Rome annexed the Nabataean kingdom, Petra began its gradual decline. In AD 363 an earthquake destroyed much of the city, and Petra did not return to its earlier prominence. From the outset, water played …


Relationship Between Soil Moisture And Electrical Resistivity In A Native Meadow And Forest Ecotone, Todd Davis Jun 2014

Relationship Between Soil Moisture And Electrical Resistivity In A Native Meadow And Forest Ecotone, Todd Davis

Natural Resources Management and Environmental Sciences

No abstract provided.


A Combined Chemical And Biological Approach To Transforming And Mineralizing Pahs In Runoff Water, Chainarong Sakulthaew, Steve D. Comfort, Chanat Chokejaroenrat, Clifford Harris, Xu Li Jun 2014

A Combined Chemical And Biological Approach To Transforming And Mineralizing Pahs In Runoff Water, Chainarong Sakulthaew, Steve D. Comfort, Chanat Chokejaroenrat, Clifford Harris, Xu Li

School of Natural Resources: Faculty Publications

The water quality of lakes, rivers and streams associated with metropolitan areas is declining from increased inputs of urban runoff that contain polycyclic aromatic hydrocarbons (PAHs). Our objective was to transform and mineralize PAHs in runoff using a combined chemical and biological approach. Using 14C-labeled phenanthrene, 14C-benzo(a)pyrene and a mixture of 16 PAHs, we found that ozone transformed all PAHs in a H2O matrix within minutes but complete mineralization to CO2 took several weeks. When urban runoff water (7.6 mg C L−1) replaced H2O as the background matrix, some delays in degradation rates …


The Impact Of Internet Gis On Access To Water Quality Information, Joseph H. Hoover Jun 2014

The Impact Of Internet Gis On Access To Water Quality Information, Joseph H. Hoover

Electronic Theses and Dissertations

Empowering citizens to comprehend complex environmental issues affecting their daily lives is essential to sustaining a healthy and informed public. The work of many environmental nongovernmental organizations (ENGOs) and institutions of higher education (IHEs) center around helping their stakeholders become informed of, and in turn, better understand complex environmental problems. However, providing individual stakeholders with knowledge about environmental issues that is easily accessible and understandable represents a recurring challenge in today's society. As a result, a gap continues to exist between that which is known about environmental problems and the public's awareness and understanding of those issues. Arsenic contamination of …


Umphlett Qci June 2014, Natalie Umphlett Jun 2014

Umphlett Qci June 2014, Natalie Umphlett

High Plains Regional Climate Center: Staff Publications

Highlights for the Basin

Temperature and Precipitation Anomalies

􏰞􏰥􏰬􏰨􏰤􏰮􏱨Streamflow

Drought Impacts to Livestock

Continued Cold Hampers Producers in North

3-Month Precipitation and Temperature Outlooks

U.S. Seasonal Drought Outlook


Water In The 21st Century, Grayson Michael Shor Jun 2014

Water In The 21st Century, Grayson Michael Shor

Social Sciences

The aim of this research project is to provide a comprehensive and global analysis of water use in order to provide the reader with a comprehensive grasp of current and impending issues. The included five (5) chapters discuss water distribution, conservation, purification, law, international development, economic debates, ethical consideration, as well as educated estimations of the effects water related issues may cause in the next one-hundred years.


Hydrogeologic Setting And Characterization Of The Aquifer System In Al Wagan Area, South Al Ain, Uae, Mohamed Ali Khalifa Jun 2014

Hydrogeologic Setting And Characterization Of The Aquifer System In Al Wagan Area, South Al Ain, Uae, Mohamed Ali Khalifa

Theses

AI Wagan area lies to the south of AI Ain City of the eastern region of Abu Dhabi Emirate

along the Sultanate of Oman-United Arab Emirates borders. AI Wagan area is important

for agriculture in the eastern region of Abu Dhabi. Ground water is the primary source of

irTigation in the area. The main source of recharge to the ground-water-flow system of the

entire eastern region of Abu Dhabi Emirate is rainfall on the Oman Mountains. Ground

water flows in an east-west direction because most of the recharge at higher elevations is or

near the Oman Mountains.

The ground-water-flow system …


Assessment Of Groundwater Recharge From The Dam Of Wadi Al-Jizzi, Sultanate Of Oman, Rashid Said Al-Kindi Jun 2014

Assessment Of Groundwater Recharge From The Dam Of Wadi Al-Jizzi, Sultanate Of Oman, Rashid Said Al-Kindi

Theses

Water is the most precious resource in arid and semi-arid countries including the Sultanate of Oman. In such countries, groundwater is regarded a major source of water. However, the long-term yield of aquifers should be evaluated. Annual recharge of groundwater resources, in such areas, is generally small but groundwater levels may also recover dramatically during wet years.

Due to the increase in population and the associated increase in agricultural and industrial activities groundwater abstraction from the different aquifers in Oman has increased tremendously since the mid-1970s. This over exploitation of the groundwater resources has led to a considerable decline in …


U.S. Drought Monitor, May 27, 2014, Michael J. Brewer May 2014

U.S. Drought Monitor, May 27, 2014, Michael J. Brewer

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for May 27, 2014 (5/27/14) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


Groundwater Flow Model, Optimal Management Model, And Advective Transport Model For The Mississippi River Valley Alluvial Aquifer In Cache Critical Groundwater Area, Arkansas, Haveen Muhammed Rashid May 2014

Groundwater Flow Model, Optimal Management Model, And Advective Transport Model For The Mississippi River Valley Alluvial Aquifer In Cache Critical Groundwater Area, Arkansas, Haveen Muhammed Rashid

Theses and Dissertations

A three dimensional finite difference model for part of the Mississippi River Valley alluvial aquifer in the cache critical groundwater area of eastern Arkansas was constructed to simulate potential future conditions of groundwater flow. The model was calibrated using Parameter Estimation code (PEST). Additional calibration was achieved using the pilot point with regularization and singular value decomposition (SVD assist). The model was calibrated using 2,322 hydraulic head measurements for the years 2000 to 2010 from 150 observation wells located in the study area. Hydraulic conductivity values from the pilot point calibration ranged between 42 and 173 m/d. Specific yield values …


U.S. Drought Monitor, May 20, 2014, Michael J. Brewer May 2014

U.S. Drought Monitor, May 20, 2014, Michael J. Brewer

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for May 20, 2014 (5/20/14) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


Watershed Protection As The Primary Tool To Achieve High Quality Drinking Water, Kate J. Gazzo May 2014

Watershed Protection As The Primary Tool To Achieve High Quality Drinking Water, Kate J. Gazzo

Master's Projects and Capstones

In this study, a cost-effectiveness analysis and multiple case studies of cities ranging from New York City, USA to Bogota, Columbia are discussed to show how watershed protection can reduce the associated costs and risks stemming from impaired water and usually eliminate the need for human engineered treatment. A cost-effectiveness analysis was performed by comparing three municipalities that have obtained Filtration Avoidance Determinations through watershed protection (green infrastructure) compared with three municipalities that have installed human engineered filtration (gray infrastructure). Using turbidity and E. coli as indicators of effectiveness, the results of this analysis determined that human engineered infrastructure is …


U.S. Drought Monitor, May 13, 2014, Mark D. Svoboda May 2014

U.S. Drought Monitor, May 13, 2014, Mark D. Svoboda

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for May 13, 2014 (5/13/14) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


Water Water Everywhere: Analyzing Long Island's Water Issues And Finding Solutions For A Sustainable Future, Anthony T. Becker May 2014

Water Water Everywhere: Analyzing Long Island's Water Issues And Finding Solutions For A Sustainable Future, Anthony T. Becker

2014 Student Theses

Over three million people call Long Island their home. With access to beautiful landscapes, world-renowned beaches, and proximity to New York City, it is no wonder that so many proudly call this geographic stretch of glacial till their home. However, throughout the years our actions do not necessarily reflect this affection we have to our home. Years of sprawl and human infestation across the island have resulted in widespread environmental degradation. Specifically, the water we drink and the beaches we enjoy have become endangered. I plan on studying the urban ecology of how intensified population growth led to the eutrophication …


U.S. Drought Monitor, May 6, 2014, Mark D. Svoboda May 2014

U.S. Drought Monitor, May 6, 2014, Mark D. Svoboda

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for May 6, 2014 (5/6/14) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


Assessing Hydrologic And Water Quality Sensitivities To Precipitation Changes, Urban Growth And Land Management Using Swat, Alexander Michael Psaris May 2014

Assessing Hydrologic And Water Quality Sensitivities To Precipitation Changes, Urban Growth And Land Management Using Swat, Alexander Michael Psaris

Dissertations and Theses

Precipitation changes and urban growth are two factors altering the state of water quality. Changes in precipitation will alter the amount and timing of flows, and the corresponding sediment and nutrient dynamics. Meanwhile, densification associated with urban growth will create more impervious surfaces which will alter sediment and nutrient loadings. Land and water managers often rely on models to develop possible future scenarios and devise management responses to these projected changes. We use the Soil and Water Assessment Tool (SWAT) to assess the sensitivities of stream flow, sediment, and nutrient loads in two urbanizing watersheds in Northwest Oregon, USA to …


Addressing Water Resource Issues In Barbados Through An Isotopic And Atmospheric Characterization Of Precipitation Variability, Veronica Hall May 2014

Addressing Water Resource Issues In Barbados Through An Isotopic And Atmospheric Characterization Of Precipitation Variability, Veronica Hall

Masters Theses & Specialist Projects

Numerous studies have analyzed isotopic variation of meteoric and dripwater in karst environments for paleoclimate reconstructions or aquifer recharge capacity. What is poorly understood is how the isotopic signal of δ18O and δ2H is transferred through the hydrologic cycle based upon storm type, frequency, intensity, and teleconnection activity in the tropical karst areas. At Harrison’s Cave, Barbados, a Hobo Onset event data logger was attached to a tipping bucket rain gauge to count the tips and record the total rainfall every 10 minutes. In the cave a Hobo data logger was used to record relative humidity …


Are Droughts Becoming More Frequent Or Severe In China Based On The Standardized Precipitation Evapotranspiration Index: 1951–2010?, Meixiu Yu, Qiongfang Li, Michael J. Hayes, Mark Svoboda, Richard R. Heim Jr. May 2014

Are Droughts Becoming More Frequent Or Severe In China Based On The Standardized Precipitation Evapotranspiration Index: 1951–2010?, Meixiu Yu, Qiongfang Li, Michael J. Hayes, Mark Svoboda, Richard R. Heim Jr.

National Drought Mitigation Center: Faculty Publications

The Standardized Precipitation Evapotranspiration Index (SPEI) was computed based on the monthly precipitation and air temperature values at 609 locations over China during the period 1951–2010.Various characteristics of drought across China were examined including: long-term trends, percentage of area affected, intensity, duration, and drought frequency. The results revealed that severe and extreme droughts have become more serious since late 1990s for all of China (with dry area increasing by ∼3.72% per decade); and persistent multi-year severe droughts were more frequent in north China, northeast China, and western northwest China; significant drying trends occurred over north China, the southwest region of …


Long-Term Effects Of Broiler Litter Application Rate On Runoff, Leaching, And Soil Respiration From A Captina Silt Loam, Richard Mcmullen May 2014

Long-Term Effects Of Broiler Litter Application Rate On Runoff, Leaching, And Soil Respiration From A Captina Silt Loam, Richard Mcmullen

Graduate Theses and Dissertations

Producers in regions with intense broiler (Gallus gallus) production take advantage of the plant nutrients contained in broiler litter (BL) to enhance yields of forage grasses. However, application of BL to pasture lands in karst regions, like the Ozark Highlands, can potentially reduce water quality if BL-derived contaminants enter surface or groundwater via runoff or drainage. Additionally, BL applications stimulate carbon dioxide (CO2) release from the soil to the atmosphere and may contribute to global warming. The objectives of this study were to determine long-term trends in runoff and soil leachate water quality and to evaluate soil respiration …


Leaching Characteristics Of Selenium From Coal Fly Ash, Mark Allen Cantrell May 2014

Leaching Characteristics Of Selenium From Coal Fly Ash, Mark Allen Cantrell

Graduate Theses and Dissertations

Selenium (Se) contamination can be a potential groundwater concern near un-lined coal ash landfills. Out of all the Environmental Protection Agency (EPA) priority and non-priority pollutants, Se has the narrowest range between what is considered beneficial and detrimental for aquatic and terrestrial organisms. The effects of ash type (i.e., fresh and weathered), water-extractant type (i.e., deionized water, rainwater, and groundwater), and extraction time (i.e., 2- and 6-hours) on Se, arsenic (As), and chromium (Cr) concentrations were investigated from Class C, subbituminous coal fly ash produced at the Flint Creek Power Plant located in Benton County, AR. Water-extractable Se concentrations differed …


Monitoring, Verification, And Accounting Plans Of Water Resources During The Geologic Storage Of Carbon Dioxide, University Of North Dakota. Energy And Environmental Research Center May 2014

Monitoring, Verification, And Accounting Plans Of Water Resources During The Geologic Storage Of Carbon Dioxide, University Of North Dakota. Energy And Environmental Research Center

EERC Brochures and Fact Sheets

Fact sheet examines the CO2 monitoring, verification, and accounting (MVA) framework. Highlights measures taken to protect water resources. Developed by the U.S. Department of Energy’s Water Working Group. [This item is an outdated or superseded version and retained for historical purposes only. It may no longer reflect current information, policies, or practices.]


Pore Water Extraction For Unsaturated Zone Isotope Research: An Investigation Using An Immiscible Displacement Fluid And A Centrifuge, Caitlin Burnett Weaver May 2014

Pore Water Extraction For Unsaturated Zone Isotope Research: An Investigation Using An Immiscible Displacement Fluid And A Centrifuge, Caitlin Burnett Weaver

Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research

Accurate and reliable pore water extraction techniques are important to an array of scientific fields including, but not limited to, hydrogeology, soil science, and paleoenvironmental research. The aim of the current project is to test the applicability of an immiscible displacement extraction technique for stable isotopes of water under a range of textural, hydrologic, and chemical conditions. In this study, laboratory experiments were conducted to establish the extent to which the proposed method 1) achieves sufficient yield for laboratory isotopic analyses, 2) results in isotopic exchange between water and the displacement fluid, 3) conserves initial isotopic compositions of spike test …


Understanding Selenium Distribution In Lake Mead Using A Three-Dimensional Hydrodynamic Based Water Quality Model, Xiaolu Wei May 2014

Understanding Selenium Distribution In Lake Mead Using A Three-Dimensional Hydrodynamic Based Water Quality Model, Xiaolu Wei

UNLV Theses, Dissertations, Professional Papers, and Capstones

Shallow groundwater and surface drainages in Las Vegas Wash are known to have elevated level of selenium which mainly comes from the naturally occurring geological hotspots on the southeast side of the Las Vegas Valley. Selenium fate and transport after it enters into Lake Mead from the Las Vegas Wash are not clearly understood. An open sourced three-dimensional Environmental Fluid Dynamic Code model (EFDC), developed by the United States Environmental Protection Agency, was used to model movement of selenium in the Boulder Basin, Lake Mead. The model was calibrated by observed data from 2006 to 2007. The concept of Lagrangian …


Regional Carbon Sequestration Partnership Water Working Group, University Of North Dakota. Energy And Environmental Research Center May 2014

Regional Carbon Sequestration Partnership Water Working Group, University Of North Dakota. Energy And Environmental Research Center

EERC Brochures and Fact Sheets

Fact sheet about the U.S. Department of Energy Regional Carbon Sequestration Partnership’s Water Working Group. Includes information on the role of water in carbon capture and storage (CCS), and addressing stakeholder concerns regarding technological development. [This item is an outdated or superseded version and retained for historical purposes only. It may no longer reflect current information, policies, or practices.]


The Agronomy Jigsaw: Finding The Pieces That Maximise Water Use Efficiency, David Hall, Paul Galloway, Jeremy Lemon, Ben Curtis, Andrew Van Burgel, Kelly Kong, Nigel Metz, May 2014

The Agronomy Jigsaw: Finding The Pieces That Maximise Water Use Efficiency, David Hall, Paul Galloway, Jeremy Lemon, Ben Curtis, Andrew Van Burgel, Kelly Kong, Nigel Metz,

Bulletins 4000 -

The Agronomy Jigsaw project is an initiative of the Department of Agriculture and Food, Western Australia (DAFWA) in collaboration with the South East Premium Wheat Growers Association (SEPWA) and Precision Agronomics Australia (PAA). The Grains Research and Development Corporation (GRDC) funded the project under the water use efficiency initiative (DAW193).

Improving water use efficiency (WUE) is the key to increasing crop production in dryland agriculture. In southern Western Australia (WA), water use efficiencies of wheat can vary from 8 to 22kg/mm/ha. The purpose of the Agronomy Jigsaw project is to understand this variation at paddock level: What are the main …


Water-Use Restriction Information: Information Sharing Between Public Water Systems And State Government Offices, Christopher Carparelli May 2014

Water-Use Restriction Information: Information Sharing Between Public Water Systems And State Government Offices, Christopher Carparelli

National Drought Mitigation Center: Faculty Publications

In many states there is an absence of communication between the state and local levels about many aspects of water resource management. This research examines the interaction between the state and local levels regarding water-use restrictions for public water systems (PWSs). This information is useful for state-level drought planning and mitigation through the assessment of drought impacts on public water supplies. Officials from five state-level entities that collect and disseminate local water-use restriction information were interviewed over the phone for this research. Each official was asked eleven questions about how and why their state collects and disseminates PWS water-use restriction …


Using Seismic Reflection To Locate A Tracer Testing Complex South Of Yucca Mountain, Nye County, Nevada, Levi Kryder May 2014

Using Seismic Reflection To Locate A Tracer Testing Complex South Of Yucca Mountain, Nye County, Nevada, Levi Kryder

UNLV Theses, Dissertations, Professional Papers, and Capstones

Tracer testing in the fractured volcanic aquifer near Yucca Mountain, and in the alluvial aquifer south of Yucca Mountain, Nevada has been conducted in the past to determine the flow and transport properties of groundwater in those geologic units. However, no tracer testing has been conducted across the alluvium/volcanic interface. This thesis documents the investigative process and subsequent analysis and interpretations used to identify a location suitable for installation of a tracer testing complex, near existing Nye County wells south of Yucca Mountain.

The work involved evaluation of existing geologic data, collection of wellbore seismic data, and a detailed surface …


Water Use On The Las Vegas Strip: Assessment And Suggestions For Conservation, Suzanne H. Trabia May 2014

Water Use On The Las Vegas Strip: Assessment And Suggestions For Conservation, Suzanne H. Trabia

Honors College Theses

Due to stresses on the water supply in southern Nevada, which include an average of three million tourists per month and an ongoing drought since the year 2000, water conservation is imperative in order to sustain the growing urban area of Las Vegas. The purpose of this study is to assess water use in fourteen casinos on and off the Las Vegas Strip (the main boulevard of the largest casinos in Las Vegas) in order to suggest approaches for water conservation, such as reducing, reusing, and modifying the current system. Since data on water consumption is not publicly available, five …


Geomorphic Change Detection Using Multi-Beam Sonar, James Hensleigh May 2014

Geomorphic Change Detection Using Multi-Beam Sonar, James Hensleigh

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

The emergence of multi-beam echo sounders (MBES) as an applicable surveying technology in shallow water environments has expanded the extent of geomorphic change detection studies to include river environments that historically have not been possible to survey or only small portions have been surveyed. The high point densities and accuracy of MBES has the potential to create highly accurate digital elevation models (DEM). However, to properly use MBES data for DEM creation and subsequent analysis, it is essential to quantify and propagate uncertainty in surveyed points and surfaces derived from them through each phase of data collection and processing. Much …