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Dissertations / Theses on the topic 'Backwaters'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

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1

Jose, Paul V. "The hydrochemistry of backwaters and dead zones." Thesis, Loughborough University, 1988. https://dspace.lboro.ac.uk/2134/33160.

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This thesis investigates the inter-relationship between hydrological and water quality variations with reference to backwaters and dead zones in rivers. The examination of a series of controlled reservoir releases to an upland channel in Wales showed "in-channel" dead zones were important solute source and storage areas. Physico-chemical data have been presented to show the influence of main channel flow and quality variations on the hydrochemistry of a range of seven backwaters within the Trent basin. The hydrological regime of the mainstream seasonally modified backwater quality. The degree

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2

Csoboth, Laura A. "Early life history of fishes in restored and unrestored backwaters /." Available to subscribers only, 2006. http://proquest.umi.com/pqdweb?did=1240695551&sid=15&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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3

Taylor, Ritchie Don. "Water Quality Aspects of an Intermittent Stream and Backwaters in an Urban North Texas Watershed." Thesis, University of North Texas, 2002. https://digital.library.unt.edu/ark:/67531/metadc3206/.

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Pecan Creek flows southeast through the City of Denton, Texas. Characterized as an urban watershed, the basin covers approximately 63.5 km2. Pecan Creek is an intermittent stream that receives nonpoint runoff from urban landuses, and the City of Denton's wastewater treatment plant, Pecan Creek Water Reclamation Plant, discharges effluent to the stream. Downstream from the City of Denton and the wastewater treatment plant, Pecan Creek flows about 6,000 m through agricultural, pasture, and forested landscapes into Copas Cove of Lake Lewisville, creating backwater conditions. Pecan Creek wate

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4

Scott, Mark Thomas. "Larval fish abundance and habitat associations in backwaters and main channel borders of the Kanawha River." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/45967.

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Larval fish distributions were determined in the lower Winfield Pool, Kanawha River, West 85, Virginia, using a 0.5-m plankton net and a 1-m<sup>2</sup> dropbox. Five habitats were sampled with the plankton net, 3 habitats with the dropbox. The 5 deep water water habitats, greater than 1.5-m in depth, sampled by the plankton net included surface tows in Bill's Creek backwater, main channel border upstream and downstream of Little Guano backwater, and Little Guano Creek backwater, where deep tows (1.5 m deep) were also taken. The 3 shallow water habitats, less than 1 m in depth, sampled by the

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5

Balfour, Christopher. "The design of a backwater wave free electron laser." Thesis, University of Liverpool, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263764.

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6

W, Schultz Douglas. "Quantifying fish movement between the Illinois River and an associated backwater /." Available to subscribers only, 2006. http://proquest.umi.com/pqdweb?did=1136077881&sid=2&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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7

Britsch, Louis D. "Geomorphic History of the Atchafalaya Backwater Area: Upper Deltaic Plain Development." ScholarWorks@UNO, 2007. http://scholarworks.uno.edu/td/637.

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Earlier researchers have produced conceptual models of Mississippi River delta plain development which divide the deltaic plain into upper and lower reaches. The upper deltaic plain has been described as an area composed mainly of lacustrine, lacustrine delta, backswamp, and crevasse channels, with minimal distributary development. The lower deltaic plain is characterized by numerous distributaries forming distributary systems and lobes. Detailed geomorphic mapping and chronologic reconstruction within the Atchafalaya Backwater Area of the upper deltaic plain of the Mississippi River has

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8

Ransley, Jessica. "The backwater boats of Kerala : identity, place and the world of Munruthuruthu." Thesis, University of Southampton, 2009. https://eprints.soton.ac.uk/361340/.

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9

Schubert, Michael Andrew Weber Larry Joseph Young Nathan C. "Computational fluid dynamics applications for nitrate removal in an upper Mississippi River backwater." [Iowa City, Iowa] : University of Iowa, 2009. http://ir.uiowa.edu/etd/431.

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10

Wear, Andrew. "High-tech hot spot or sleepy backwater? : innovation and the importance of networks /." Connect to thesis, 2008. http://repository.unimelb.edu.au/10187/5741.

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This paper draws on evidence from Victoria to examine why more innovation takes place in some areas than in others. In so doing, it explores the relationship between innovation and networks.<br>Despite a large number of recent government policy statements on innovation, there has been very little attention paid to the spatial dimensions of innovation.<br>The literature on innovation increasingly points to the important role played by local and regional networks in driving innovation. Innovation is the result of the production, use and diffusion of knowledge, and this demands collaboration invo

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11

Jackson, Ashley James Walker. "Watershed in a colonial backwater? The Bechuanaland Protectorate during the Second World War." Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321629.

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12

Schubert, Michael Andrew. "Computational fluid dynamics applications for nitrate removal in an upper Mississippi River backwater." Thesis, University of Iowa, 2009. https://ir.uiowa.edu/etd/431.

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This thesis details the work completed in order to develop a hydrodynamic and nitrate transport and reaction model for Round Lake, a backwater on UMR Pool 8. This work begins with investigating the fundamentals of nitrogen removal in aquatic ecosystems and reviewing other combined hydrodynamic and nutrient modeling efforts. Field data were gathered to determine model boundary conditions and provide a basis for calibration and validation. Using this data, the flow regime in Round Lake was simulated. CFD applications to model particle residence times and species transport and reaction were used

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13

Bramsäter, Jenny, and Kajsa Lundgren. "Study on the Dynamic Control of Dam Operating Water Levels of Yayangshan Dam in Flood Season." Thesis, KTH, Industriell ekologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174877.

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Water levels up- and downstream of dams are strongly affected by water levels in the reservoir as well as the discharge of the dam. To ensure that no harm comes to buildings, bridges or agricultural land it is important to ensure that the water level in the reservoir is adjusted to handle large floods. This report studies within what range the water level in the reservoir of the Yayangshan dam, located in Lixian River, can vary without causing any flooding downstream the dam or at the Old and New Babian Bridge located upstream the dam. By calculation of the designed flood, flood routing- and b

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14

Lyle, Beverley Nicola. "Peripheral backwater or innovative upland? : patterns of Franciscan patronage in Renaissance Perugia, c.1390-1527." Thesis, Oxford Brookes University, 2008. https://radar.brookes.ac.uk/radar/items/e2e5200e-c292-437d-a5d9-86d8ca901ae7/1.

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In 1400, Perugia had little home-grown artistic talent and relied upon foreign painters to provide its major altarpieces. A century later, this situation had been reversed with Perugino, Pintoricchio and Raphael all active in the city. By investigating commissioning patterns III Franciscan establishments in Perugia from 1390 to c.1527, this thesis identifies the circumstances leading to this change. It argues that artistic innovation in such peripheral places is often undervalued or automatically attributed to external factors. Focusing upon five Minorite establishments, the importance of loca

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15

Usher, Mark Peter. "Government of water, circulation and the city : transforming Singapore from tropical 'backwater' to global 'hydrohub'." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/government-of-water-circulation-and-the-city-transforming-singapore-from-tropical-backwater-to-global-hydrohub(85ab4081-be00-4d17-a6ae-401ca854ab26).html.

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This thesis will revisit Michel Foucault's original arguments on the ‘urban problem’ and the concomitant question of circulation, which I contend has been disassociated from more general renderings of his concept of governmentality. Throughout the 1970s, and particularly during his lectures at the Collège de France, Foucault would regularly return to the problem of urban circulation; how it has been conceived, calculated and distributed. Foucault would ponder the ways that material infrastructures have canalised people and resources, and naturalised their complex coexistence, in the interests

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16

Clark, Andrew Francis. "From frontier to backwater : economy and society in the upper Senegal valley (West Africa), 1850-1920 /." Lanham (Md.) : University press of America, 1999. http://catalogue.bnf.fr/ark:/12148/cb375642092.

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17

Hansson, Mattis. "Rating of discharge at monitoring station affected by backwater effects - El Deim station in the Blue Nile." Thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-206149.

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On the Blue Nile in Sudan, near the Ethiopian border, there is a measurement station named El Deim. The discharge assessments carried out at this station are crucial for the water resource management in Sudan. Due to changed conditions, caused by a heightening of the downstream-located Roseires dam, new methods for discharge assessment are needed. The objective of the present study was to examine possibilities and methodologies to assess the discharge at this station. The flow dynamics was examined through steady state as well as dynamic hydraulic modeling by use of the Mike 11 modeling softwa

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18

Quarderer, Nathan Anderson. "Sediment-size analysis, nitrate monitoring, bathymetric mapping and construction of a two-dimensional hydrodynamic model of a backwater region of the Upper Mississippi River System 2008-2009." Thesis, University of Iowa, 2010. https://ir.uiowa.edu/etd/728.

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In April 2008, the non-profit organization Living Lands & Waters (LL&W) approached IIHR-Hydroscience and Engineering to assist with the preliminary scoping and assessment for the proposed dredging and restoration of the backwater region located near the confluence of the Iowa and Mississippi Rivers, commonly referred to as Boston Bay. IIHR was responsible for the measurement and analysis of relevant physical and chemical parameters including particle-size analysis of sediment cores; real-time monitoring of nitrate-nitrogen concentration of agricultural runoff entering Boston Bay; bathymetric s

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19

Hellmers, Sandra [Verfasser], and Peter [Akademischer Betreuer] Fröhle. "Integrating local scale drainage measures in meso scale hydrological modelling of backwater affected catchments / Sandra Hellmers ; Betreuer: Peter Fröhle." Hamburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2020. http://d-nb.info/1206245980/34.

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20

Jensen, Alexandria Kosoma. "HIGH RESOLUTION SENSING OF NITRATE DYNAMICS IN A MIXED-USE APPALACHIAN WATERSHED: QUANTIFYING NITRATE FATE AND TRANSPORT AS INFLUENCED BY A BACKWATER RIPARIAN WETLAND." UKnowledge, 2018. https://uknowledge.uky.edu/bae_etds/59.

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As harmful algal blooms begin to appear in unexpected places such as rivers in predominantly forested systems, a better understanding of the nutrient processes within these contributing watersheds is necessary. However, these systems remain understudied. Utilization of high-resolution water quality data applied to deterministic numerical modeling has shown that a 0.42% watershed area backwater riparian wetland along the Ohio River floodplain can attenuate 18.1% of nitrate discharged from local mixed-use watersheds and improves in performance during high loading times due to coinciding increase

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21

Yassin, Menna. "Steady State Hydroplaning Risk Analysis and Evaluation of Unsteady State Effects." Scholar Commons, 2019. https://scholarcommons.usf.edu/etd/7990.

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Hydroplaning is a major concern on high speed roadways during heavy rainfall events. Hydroplaning tools are widely used by designers to reduce their roadway’s hydroplaning potential, therefore reducing the possibilities of severe crashes. This dissertation presents two methodologies for improving the prediction of hydroplaning potential. The first phase focused on improving an existing widely used software called PAVDRN. Using multiple datasets from the Florida Department of Transportation, the author filtered the data using specific criteria to leave only truly dynamic hydroplaning crashes. T

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22

Snyder, Katie May. "Quantitative analysis in energy loss and vertical mass transport of various channel restoration structures using physical based modeling." Thesis, University of Iowa, 2016. https://ir.uiowa.edu/etd/2144.

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Physical based modeling was conducted to improve channel restoration efforts through direct comparison of submerged structures of various design and orientations. In-stream structure technologies studied are used to provide bank stabilization, flow control, scour and sediment control, as well as ecological enhancement through turbulent dispersion and vertical mass transport. Quantitative analysis evaluates flow effects induced by common channel restoration structures in their ability to provide mixing in our streams and ri

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23

Keruzoré, Antoine. "Aquatic vegetation processes in a floodplain-river system and the influence of lateral dynamics and connectivity." Thesis, University of Stirling, 2012. http://hdl.handle.net/1893/7677.

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In river ecology the description and understanding of near-natural ecosystem functionality is a difficult task to achieve as the majority of river floodplains have been intensively impacted by human activities. This work addresses ecological functionality of a relatively unimpacted large river system, focussing on the lateral dynamic and connectivity mechanisms driving aquatic vegetation processes. Macrophytes were found to be very patchily distributed at the riverscape scale, being mainly confined to low energy lateral habitats in the floodplain, such as backwaters. Backwaters provided favour

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24

Åkesson, Anna. "Peakflow response of stream networks : implications of physical descriptions of streams and temporal change." Doctoral thesis, KTH, Vattendragsteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-172939.

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Through distributed stream network routing, it has quantitatively been shown that the relationship between flow travel time and discharge varies strongly nonlinearly with stream stage and with catchment-specific properties. Physically derived distributions of water travel times through a stream network were successfully used to parameterise the streamflow response function of a compartmental hydrological model. Predictions were found to improve compared to conventional statistically based parameterisation schemes, for most of the modelled scenarios, particularly for peakflow conditions. A Four

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25

Marek, Vít. "Protipovodňová ochrana obce Želešice na tocích Bobrava a Hajanský potok." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226143.

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This thesis is a study of flood protection in the community Želešice, Brno-venkov. The theoretical part deals with: the causes of flooding, their dividing and deals with options, how to protect endangered area. Main part includes calculations of the amount of sediment in the river Bobrava and the Hajanský stream, analysis of risks by quantitative expression, suggests to complete the flood plan of the community and a list of designed flood control measures with own technical suggestion. The last point is to consider, whether is the community threatened by backwater from the river Svratka, which

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26

Isel, Sandra. "Développement de méthodologies et d'outils numériques pour l'évaluation du débit en réseau hydraulique à surface libre." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAD008/document.

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L’évaluation du débit en réseaux hydrauliques à surface libre est une problématique actuelle sur le plan scientifique, à forts enjeux technologiques, économiques et écologiques. Dans cette thèse, de nouvelles méthodologies d’instrumentation, basées sur une synergie entre mesures non intrusives de hauteur d’eau et modélisation numérique ont été développées. Celles-ci s’appliquent d’une part à des collecteurs dont le fonctionnement hydraulique est complexe et, d’autre part, à des ouvrages non-standard (Venturi, déversoirs d’orage). Ce travail de thèse multidisciplinaire vise une meilleure compré

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27

Khalil, Kamal. "Water surface profile modelling for Pinjarra flood diversion channel and economic evaluation." Curtin University of Technology, Department of Civil Engineering, 2007. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=17589.

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Shire of Murray has concerns regarding the negative impact that a 100 year flood could have on existing structures built before 1997. The increase cost in construction due to landfill has an adverse effect on development in Pinjarra. Feasibility of constructing a diversion channel at upstream of Murray River to attenuate the flood level from 1 in 100 year ARI to 1 in 50 year ARI, was investigated by Kiong (2003). The Murray River Water Surface Profile along three kilometres south of Greenlands Road was modelled. Flood damages on each flood occurrence were assessed and Average Annual Damage (AA

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28

"Backwater rise due to a submerged spur." Thesis, 1992. http://hdl.handle.net/10388/etd-01312011-131519.

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A spur is an earth or rock fill embankment which projects into a stream channel from the bank. The spur is usually a low height structure and therefore it may be overtopped during flood events. Prediction of the backwater rise upstream of the overtopped spur, given the downstream stage-discharge curve and the geometry of the channel and the spur, is a new area of study and was the main objective of this thesis. Overtopping or submergence of a spur is an example of 'over and around' flow. 'Over and around' flow is a complicated case of rapidly varied non-uniform flow through a non-prismatic c

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29

DVOŘÁKOVÁ, Olga. "Biodiverzita a ekologie makrofyt vybraných stojatých vod v aluviu horního toku Lužnice." Master's thesis, 2008. http://www.nusl.cz/ntk/nusl-48863.

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This is a field study describing seven backwaters in the floodplain of the Luznice river. The backwaters include alluvial pools, river arms and oxbows which differ in their genesis, morfology, hydrological régime, macrophyte vegetation and chemistry of water and sediments. This study was carried out in the Trebonsko - Protected Landscape Area and Biosphere Reserve, South Bohemia, Czech Republic. The data of species composition of the vegetation on transects of the backwaters are supplemented by water and sedimet analyses.

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30

Graham, Robert Alan. "Routing procedures for multiple reservoirs with backwater-affected outlet structures." 1996. http://hdl.handle.net/1993/19139.

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31

Liu, Yu-Chi, and 劉有棋. "The linearized analytical approach in a regular channelwhere backwater occurs." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/80485722664011521261.

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碩士<br>淡江大學<br>水資源及環境工程學系碩士班<br>98<br>The objective of this study is to develop a linearly analytical solution for simulating unsteady open channel flow in various shapes of the cross sections, such as rectangular and trapezoidal cross sections, where the significant backwater effect from downstream is existed. And comparing with the numerical method and the normalized analytical solution. Neglecting the inertia terms in the Saint-Venant momentum equation to obtain the linearization of the Saint-Venant equation by the method of small perturbation. And obtaining the normalized analytical mod

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32

Hsu, Tung-Fu, and 許冬福. "Analytical and Numerical Solution of Circular Flow where Backwater Occurs." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/83297006151997207194.

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碩士<br>淡江大學<br>水資源及環境工程學系碩士班<br>98<br>At present when solves mighty current of calculation problems which unsteady circular flow, the major method is using the coverall software or the numerical methods which be used by the momentum equation in the unsteady open channel flow in the inertia item to be ignored, and make the equation linearization, and the results is almost the same to complete dynamic wave model . But therefore in the computational process, because of its abbreviation inertia item, utilizes in the circular channel or the downstream which the backwater occurred. It often

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33

Yen, Sen Lin, and 顏森霖. "Backwater effect on water surface profile and bed deformation in channel bend." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/15821341570186407862.

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碩士<br>國立成功大學<br>水利及海洋工程學系<br>87<br>As water flows into a curved alluvial channel, or a channel bend, centrifugal acceleration of water column produces water surface super-elevation and forms a helical flow pattern. Bed material tends to be eroded from the outer bank region and deposits at the inner bank region. If a structure, such as a weir or jetty, is constructed downstream the bend for bank protection or some other reason. Backwater rises water level in the bend and may vary the bed topography. Aims of this study are to examine these backwater effects that are aroused from a dam

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34

Theis, Lindsay J. "Post-impoundment sedimentation in the backwater swamps of Bagley Bottoms, Pool Ten, Upper Mississippi River." 2002. http://catalog.hathitrust.org/api/volumes/oclc/50148193.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 2002.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 56-59).

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35

Jeena, T. S. "Economic and Institutional factors in the use and management of Wetlands: A case study of the cochin backwater, Kerala." Thesis, 2002. http://hdl.handle.net/2009/2979.

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