Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 25 for “"water authority"”.
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A benefit-cost analysis of an interstate seawater desalination plant shared between California and Nevada
According to the Southern Nevada Water Authority (2002), increasing demands for water in southern Nevada will require the importation of additional water resources. The purpose of this thesis was to examine one possible imported resource: an interstate seawater desalination cooperative between …
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What's swimming in my glass? The debate over the Southern Nevada Water Authority's use of the return flow credit policy
Currently the Southern Nevada Water Authority uses an existing federal policy of return flow credits to divert water from Lake Mead above the annual allocation authorized by the Colorado River System Water Use Agreement. Credits obtained by the return of treated effluent allow water officials to …
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The Effect of Predisinfection with Chlorine Dioxide on the Formation of Haloacetic Acids and Trihalomethanes in a Drinking Water Supply
… the Blacksburg, Christiansburg, VPI (BCVPI) Water Authority in Radford, Virginia elected to eliminate prechlorination and replace it with preoxidation using chlorine dioxide (ClO2). Prior to full-scale application at the BCVPI Water Treatment Plant, jar testing was done to determine the …
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Process Modeling of Trihalomethanes During Aquifer Storage and Recovery
… southwestern United States, by injecting treated water underground during wet periods and recovering water during dry periods. Trihalomethanes are the most common disinfection by-products found in chlorinated water, a result of chlorine reacting with dissolved organic matter, and are linked to …
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Changing Patterns of Water, Access, and Public Discourse in the Lower Colorado River Valley of Texas, 1970-2015
This mixed-methods study analyzes changes in water, access, and public discourse in the lower Colorado River valley of Texas from 1970 to 2015. The waters of the lower Colorado River have sustained urban populations and agricultural operations for over a century. Yet, recent, rapid urban growth and …
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Water resources management in the eastern Caribbean : a study of the two small island developing states, Trinidad and Tobago and Barbados
Water resource management is currently an issue of major significance at a global level both in terms of policy-making and academia. Small island states represent a special group, with Trinidad and Tobago and Barbados, even more particular cases. Development, industrialisation, tourism and resource …
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Successfully implementing strategic decisions: The implementation of top level decisions in organizations.
… The organizations comprise a university, a water authority, two mail order companies and two chemical firms. The objective is to describe and explain implementation processes and outcomes. To this end, eleven independent variables and three dependent variables are distinguished. These …
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An assessment of cropland application of alum sludge
… This study investigated the application of water treatment residuals in both field studies and greenhouse pot studies in order to determine the effects on soils properties and crop yields. Alum sludge collected from the Blacksburg-Christiansburg-VPI Water Authority and Radford Water …
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Characterisation, Treatment and Utilisation of the Effluent from an Intensive Fish Farm
… control and management information on aspects of water quality in fish farming. The metabolic products produced by intensively farmed rainbow trout have been assessed and the production rates can be used to predict water quality. The water quality requirements of trout have been reviewed and …
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Effects of a surface circulator on temperature, dissolved oxygen, water velocity, and photosynthetic yield in Falling Creek Reservoir
… the ability to control their depth within the water column, they have a competitive advantage over other species of photosynthetic organisms. This leads to the potential for cyanobacteria blooms, and because of taste and odor problems, as well as possible toxin production associated with …
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A Tidal Prism analysis of the soluble copper mixing zone around the Occoquan Water Treatment Plant
The Fairfax County Water Authority applies copper sulfate as an algaecide in the Occoquan Reservoir to control the growth of taste and odor causing algae. The Occoquan Water Treatment Plant removes water from the reservoir for distribution to portions of Fairfax County. Approximately once a day, …
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Agricultural slurry an increasing problem to the environment: A comparative study of controls in the UK, Netherlands and Denmark
Pollution of watercourses from farm waste have been steadily increasing mainly as a result of deliberate or accidental discharge. A number of factors have contributed to this steady increase; the increase in intensive livestock farming has generally occurred without the necessary improvements in …
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A Dynamic Decision Support System for Drought Resiliency and Climate Change
A water utility is tasked with perpetually supplying water to its customers, regardless of weather patterns and water supply. Simply put, there is no room for a shortage under any conditions. This can be most challenging in times of drought, when available water is slim and the utility system is …
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Las Vegas in an Era of Limits: Urban Water Politics in the Colorado River Basin
… metropolis, the Las Vegas metropolitan area's water supply is limited by law and not by local environmental conditions. The federal government allocates 300,000 acre-feet of water per year to the metro-area. During the 1980s the Las Vegas metro-area grew from 400,000 people to 750,000, …
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A Conceptual Model OF Groundwater Flow in Spring Valley, NV, AND Snake Valley, NV-UT
… the Clark, Lincoln and White Pine Counties Groundwater Development Project proposed by the South Nevada Water Authority (SNWA). Water budget estimates suggest that interbasin flow accounts for a significant portion (~25%) of the water budgets in Spring and Snake Valleys. Although interbasin flow …
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Development of a Novel Performance Index and a Performance Prediction Model for Metallic Drinking Water Pipelines
… authors have developed many different types of water pipe condition and failure models using the various methodologies available. Contrary, current utilities are struggling to maintain their current water infrastructure system, due to the lack of effective prediction tools at hand. The gap …
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On the importance of input variables and climate variability to the yield of urban water supply systems
… practices, management and operation of urban water supply systems. In Australia, yield is commonly defined as the maximum average annual volume of water that can be supplied from the water supply system subject to climate variability, operating rules, demand pattern and adopted level of …
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Experimental investigation of leakage-induced pipe erosion outside of pipe leaks
The problem of water loss from water distribution systems is an issue that faces municipalities worldwide. A large proportion of water loss is a result of leakage. With increasing water scarcity across the globe, it is imperative to conserve water resources, and hence reduce leakage in water …
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Rehabilitation of the urban water system in Khartoum
Water is the most common substance on earth, covering more than 70% of the planet's surface. The supply of fresh water has been shrinking; up until now water has been treated as an unlimited resource that has been provided as cheaply as possible and in any quantity desired. Yet by the year 2020 …
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The state of Namibia's concrete infrastructure – A comparative study of Walvis Bay, Swakopmund, Arandis and Usakos towns
… besides compressive strength. The Namibia Port Authority (NAMPORT) has taken a step in this direction with the development of concrete construction specifications which have adopted the South African Durability Index method as part of the concrete acceptance criteria. Challenges encountered (by …
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