Dissertations / Theses on the topic 'Water quality sampling'
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Haggarty, Ruth Alison. "Evaluation of sampling and monitoring designs for water quality." Thesis, University of Glasgow, 2012. http://theses.gla.ac.uk/3789/.
Full textXie, Xiongfei. "Operation Optimization and Water Quality Simulation of Potable Water Distribution System." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5406.
Full textLin, Daorui. "Global Sensitivity of Water Quality Modeling in the Gulf of Finland." Thesis, KTH, Mark- och vattenteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-180285.
Full textLeitch, Katherine McArthur. "Estimating Tributary Phosphorus Loads Using Flow-Weighted Composite Storm Sampling." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/10078.
Full textMaster of Science
Longsmith, Rebecca Johnson. "A BIOLOGICAL MONITORING INTERNSHIP WITH THE OHIO ENVIRONMENTAL PROTECTION AGENCY, DIVISION OF SURFACE WATER." Miami University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=miami1451932666.
Full textSpeakman, Anne Kathryn. "A WATER QUALITY INTERNSHIP WITH THE OHIO ENVIRONMENTAL PROTECTION AGENCY’S DIVISION OF SURFACE WATER." Miami University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=miami1417012918.
Full textDefenbaugh, Angela Lynn. "Evaluating Ohio River Basin Waters: A Water Quality and Water Resources Internship with the Ohio River Valley Water Sanitation Commission." Miami University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=miami1389295851.
Full textDel, Valle Lemuel Alejandro. "Water Quality Internship with the Ohio Environmental Protection Agency." Miami University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=miami1470088630.
Full textLindsey, Melanie. "Sampling Frequency for Semi-Arid Streams and Rivers: Implications for National Parks in the Sonoran Desert Network." Thesis, The University of Arizona, 2010. http://hdl.handle.net/10150/193445.
Full textPence, Rachel Anabel. "Comparison of Quantitative and Semi-Quantitative Assessments of Benthic Macroinvertebrate Community Response to Elevated Salinity in central Appalachian Coalfield Streams." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/86787.
Full textMaster of Science
Surface coal mining in central Appalachia, eastern USA, contributes to increased salinity of surface waters, causing adverse effects on water quality and aquatic life. Stream condition is often evaluated through sampling of benthic macroinvertebrates because they are ubiquitous in aquatic environments and differ in sensitivity to various types of pollution and environmental stressors. In central Appalachia, studies have largely relied on semi-quantitative sampling methods to characterize effects of elevated salinity on benthic macroinvertebrate communities in headwater streams. These methods are ‘semiquantitative’ because processing of samples requires subsampling procedures and identification of a fixed number of individuals, regardless of the number of organisms that were originally collected. In contrast, quantitative sampling involves identification and counting of all collected individuals, often resulting in organism counts that are much higher than those of semi-quantitative samples. Quantitative samples are typically more time-consuming and expensive to process but allow for expanded description of the benthic macroinvertebrate community and characterization of community-wide response to an environmental stressor such as elevated salinity. Working in central Appalachian streams, I compared 1) depictions of benthic macroinvertebrate community structure; 2) benthic community response to elevated salinity; and 3) the minimum levels of salinity associated with community change between quantitative and semi-quantitative methods. Quantitative sampling methods provide many advantages over semi-quantitative methods by providing more complete enumerations of the taxa present, thus enhancing the ability to evaluate aquatic-life condition and to characterize overall benthic macroinvertebrate community response to elevated salinity caused by surface coal mining.
McCurdy, Porcha. "Storm Sampling to Assess Inclement Weather Impacts on Water Quality in a Karst Watershed: Sinking Creek, Watauga Watershed, East Tennessee." Digital Commons @ East Tennessee State University, 2020. https://dc.etsu.edu/etd/3724.
Full textOlwine, Ashley M. "An internship in environmental education and water quality with Sanitation District No. 1." Miami University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=miami1283882439.
Full textMarinaro, Ralph Michael. "Investigation of water vapor effects on the detection of nitric acid vapor with the tungstic acid technique." Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/71262.
Full textPh. D.
Pearce, Austin Willis. "Assessing Phosphorus Sources with Synoptic Sampling in the Surface Waters of a Mixed-Use, Montane Watershed." BYU ScholarsArchive, 2017. https://scholarsarchive.byu.edu/etd/6374.
Full textPeterson, Sarah Jonell. "The role of sampling density in the accuracy of water quality assessment: A case study of 9 Ohio watersheds and the Wadeable Streams Assessment." Miami University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=miami1313516281.
Full textWeston, Johanna Nadia Jean. "Quantification of nitrate sources and sinks using a water quality network in Morro Bay Estuary, California." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/634.
Full textPoulier, Gaelle. "Etude de l’échantillonnage intégratif passif pour l’évaluation réglementaire de la qualité des milieux aquatiques : application à la contamination en pesticides et en éléments trace métalliques des bassins versants du Trec et de l’Auvézère." Thesis, Limoges, 2014. http://www.theses.fr/2014LIMO0032/document.
Full textThe intensive use of pesticides in agriculture and urban activities since the 1950s has led to diffuse contamination of environmental compartments (air, soil, water). The presence of these molecules can lead to toxic effects for biota. The implementation of the Water Framework Directive (WFD) requires the use of an efficient monitoring network, based on reliable sampling and analytical techniques. Nowadays, grab sampling followed by extraction of analytes and chromatographic analysis is the most widespread strategy because of its simplicity of implementation but it also has numerous drawbacks. The crux of the issue lies in the lack of temporal representativeness and the low analytical sensibility. An alternative strategy to overcome some of these problems could be the use of passive samplers. This contribution aims at discuss about the possible application of passive samplers in regulatory monitoring programs. The originality of this work lies in :The variety of tested devices: three different samplers was studied (The Polar Organic Chemical Integrative Sampler (POCIS), the Chemcatcher and the Diffusive Gradient in Thin Film (DGT). Conventional grab sampling strategies were also evaluated.The variety of studied environments: two very different watersheds were selected. The first one presented a high level of contamination; the second had a low contamination in pesticides.The implementation of passive samplers in a real regulatory context, as the selected streams were monitored by the Water Agency for operational control. Data from the Water Agency could therefore be compared with passive sampler data
Suse, Roberto 1980. "Localização ótima de estações de monitoramento de qualidade em redes de distribuição de água." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258329.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo
Made available in DSpace on 2018-08-25T02:11:35Z (GMT). No. of bitstreams: 1 Suse_Roberto_M.pdf: 6029158 bytes, checksum: 0a46cab6e6d5a63e2adc86fb686afb8a (MD5) Previous issue date: 2014
Resumo: A qualidade da água potável transportada em uma rede de distribuição deve ser monitorada para identificar condições que possam comprometer a saúde da população atendida. Este monitoramento deve servir como um mecanismo para detectar a ocorrência de problemas de contaminação da água em seus primeiros estágios. As estações devem ser localizadas de forma a garantir a representatividade espacial e temporal da rede monitorada, ou seja, a análise dos pontos monitorados deve permitir avaliar a qualidade da água de toda a rede de distribuição ao longo do tempo. Diversos pesquisadores mencionam a necessidade em utilizar a modelagem matemática associada aos programas computacionais que simulam o comportamento da água nas redes para identificar a quantidade e os melhores locais para as estações de monitoramento. Entretanto, a aplicação destas ferramentas, para descrever o comportamento hidráulico e qualitativo da água nas redes de distribuição, pode ser considerada útil se e somente se as vazões, o sentido do escoamento e a demanda de água na rede de distribuição forem avaliados. Por estas razões, o objetivo deste trabalho de mestrado foi o desenvolvimento de uma ferramenta computacional com o intuito de contribuir nas investigações relacionadas ao importante tema da qualidade da água transportada pelas redes de distribuição. A ferramenta computacional foi baseada no conceito de cobertura de demanda, contém rotinas de otimização decorrente do algoritmo genético e foi acoplada ao simulador hidráulico EPANET. Para a avaliação da ferramenta computacional, foram estudadas duas redes hipotéticas de distribuição de água. A primeira é composta por três reservatórios de nível fixo, quinze pontos de consumo e vinte e três tubulações. Foi verificada a relação entre a variação da demanda de água e critério de fração de água sobre o conjunto ótimo de estações de monitoramento sugerido pela ferramenta computacional. A segunda é composta por um reservatório de nível fixo, dezenove pontos de consumo e trinta e quatro tubulações. Foi avaliada a quantidade mínima de estações de monitoramento necessárias para fazer a cobertura de toda a rede de distribuição de água. Os resultados obtidos corroboram a viabilidade da proposição do conceito de cobertura de demanda. Evidencia-se que a localização adequada das estações de monitoramento deve ser obtida após análise da rede de distribuição de água ao longo de um dia típico de funcionamento
Abstract: The quality of drinking water transported in a water distribution system must be monitored to identify conditions that may compromise the health of the population supplied. This monitoring should be a mechanism to detect the occurrence of trouble of water contamination in early stages. The stations must be located in order to ensure spatial and temporal representation of water in the network, i.e., the analysis of the samples must allow assessment of water quality throughout the distribution network over time. Several researchers talk about the need of using mathematical models associated with computer programs (that simulate the behavior of water in the networks) to identify the quantity and the best places for monitoring stations. However, the application of these tools to describe both the hydraulic and water quality behavior in water distribution networks can be useful if the flow rates, the flow direction and water demand have been quantified. For these reasons, the aim of this master degree work was the development of a computational tool in order to contribute to the investigation about the important theme of water quality transported into the water distribution networks (WDN). The computational tool was based on the concept of coverage demand, it includes optimization routines that are deriving of genetic algorithms and it was linked up to the hydraulic simulator EPANET. For the evaluation of the computational tool, two hypothetical water distribution networks (HWDN) had studied. The first one consists for three tanks with fixed level consumption, fifteen junctions and twenty three pipes. It was checked the relationship out between the variation of water demand and water fraction criteria under the optimal set of monitoring stations suggested by the computational tool. The second one consists for one tank with fixed level consumption, nineteen junctions and thirty four pipes. It was evaluated the minimum amount of monitoring stations required to cover the entire HWDN. The results support the feasibility of the proposition of coverage demand concept. Evidently, the adequate location of monitoring stations must be getting after anaysis of the WDN over a typical day of operation
Mestrado
Saneamento e Ambiente
Mestre em Engenharia Civil
Emelogu, Emmanuel Steven. "Combined effects of bioavailable organic contaminants in the aquatic environment." Thesis, Robert Gordon University, 2013. http://hdl.handle.net/10059/840.
Full textDorji, Kinzang. "Utility of an existing biotic score method in assessing the stream health in Bhutan." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/97993/1/Kinzang_Dorji_Thesis.pdf.
Full textMann, Angelica. "Numerically Efficient Water Quality Modeling and Security Applications." Thesis, 2013. http://hdl.handle.net/1969.1/149303.
Full textBowd, Rebecca. "Towards a macroinvertebrate sampling protocol for monitoring water quality of wetlands in South Africa." Thesis, 2005. http://hdl.handle.net/10413/3336.
Full textThesis (M.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2005.
"Monitoring Algal Abundance and Water Quality in Arizona Reservoirs Through Field Sampling and Remote Sensing." Master's thesis, 2018. http://hdl.handle.net/2286/R.I.50594.
Full textDissertation/Thesis
Masters Thesis Sustainability 2018
Ling, Joanne Elizabeth, University of Western Sydney, College of Health and Science, and School of Natural Sciences. "Testing aquatic macroinvertebrate and plant techniques for the biological assessment of wetlands : a consideration of the effects of errors and implications for sampling design." 2006. http://handle.uws.edu.au:8081/1959.7/18015.
Full textDoctor of Philosophy (PhD)
Sperl, Benjamin J. "Augmenting Indiana's groundwater level monitoring network: optimal siting of additional wells to address spatial and categorical sampling gaps." Thesis, 2014. http://hdl.handle.net/1805/6305.
Full textGroundwater monitoring networks are subject to change by budgetary actions and stakeholder initiatives that result in wells being abandoned or added. A strategy for network design is presented that addresses the latter situation. It was developed in response to consensus in the state of Indiana that additional monitoring wells are needed to effectively characterize water availability in aquifer systems throughout the state. The strategic methodology has two primary objectives that guide decision making for new installations: (1) purposive sampling of a diversity of environmental variables having relevance to groundwater recharge, and (2) spatial optimization by means of maximizing geographic distances that separate monitoring wells. Design objectives are integrated in a discrete facility location model known as the p-median problem, and solved to optimality using a mathematical programming package.
Dixon-Jain, Prachi. "Groundwater-surface water interactions : implications for nutrient transport to tropical rivers." Phd thesis, 2008. http://hdl.handle.net/1885/9514.
Full text