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Dissertations / Theses on the topic 'Runoff regime'

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1

Sørensen, Rasmus. "Influence of topography and forestry on catchments : soil properties, runoff regime, and mercury outputs /." Uppsala : Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, 2009. http://epsilon.slu.se/200985.pdf.

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2

Beasley, Jeffrey S. "Nitrogen Regime Influence on Nutrient and Sediment Surface Runoff During Vegetative Establishment of Bermudagrass." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/31900.

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Bermudagrass (Cynodon dactylon (L.) Pers.) is a popular turfgrass used throughout the Southeast. Bermudagrass is established primarily as sprigs on large acreage sites. Currently, the industry standard practice (ISP) of fertilization during bermudagrass sprig establishment is 48.8 kg N ha-1 wk-1. This fertilizer rate can be excessive on morphologically immature sprigs in the initial weeks of establishment, thus making the possibility of offsite surface runoff N events more likely. Two experiments were conducted in 2000 and 2001 where sprigs were established at 2, 4, 6, 8, and 10 weeks pr
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Lusardi, Robert A., Michael T. Bogan, Peter B. Moyle, and Randy A. Dahlgren. "Environment shapes invertebrate assemblage structure differences between volcanic spring-fed and runoff rivers in northern California." UNIV CHICAGO PRESS, 2016. http://hdl.handle.net/10150/621412.

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Flow variability plays an important role in structuring lotic communities, yet comparatively little is known about processes governing assemblage dynamics in stream ecosystems with stable environmental conditions, such as spring-fed rivers. Volcanic spring-fed rivers (hereafter spring-fed rivers) occur in geologically active landscapes of the western USA and around the globe. We sampled invertebrate assemblages and quantified primary productivity and habitat characteristics of spring-fed and runoff rivers in northern California over 4 seasons. We predicted that abiotic factors would be more st
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4

Beaulieu, Mathieu. "A shifting hydrological regime : a field investigation of snowmelt runoff processes and their connection to summer baseflow, Sunshine Coast, B.C." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/31299.

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The annual hydrographs in British Columbia rivers are either characterized by glacial, nival, pluvial or “hybrid” (both pluvial and nival) sources of runoff. Climate change scenarios for the 2050s indicate that snow-water-equivalent (SWE) will diminish by 50 to 80% in lower snowfed-dominated basins in the South Coastal region compared to historical values. This could trigger a shift from a hybrid to a pluvial regime for many creeks, including streams used as primary water supply such as Chapman Creek on the Sunshine Coast. It has been suggested in previous studies that this change in runoff re
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5

Horn, João Francisco Carlexo. "REGIME HIDROLÓGICO DE DUAS MICROBACIAS CONTÍGUAS: UM COMPARATIVO ENTRE USO URBANO E RURAL." Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/7782.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>The human action induces changes in basins natural runoff. Flooding may become more intense, there may be more immediate and prolonged droughts, an accelerated erosion process and water quality tends to deteriorate. Thus, this work exposes the need to know the impact in the runoff caused by the use change and land use with emphasis on urban space. So, this study aims to evaluate the differences in the runoff between two contiguous watersheds and with the same area: one being use predominantly agricultural and the other with prim
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6

Vandervaere, Jean-Pierre. "Caracterisation hydrodynamique du sol in situ par infiltrometrie a disques. Analyse critique des regimes pseudo-permanents, methodes transitoires et cas des sols encroutes." Université Joseph Fourier (Grenoble), 1995. http://www.theses.fr/1995GRE10186.

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Le travail presente dans ce memoire est consacre a la caracterisation hydrodynamique in situ des sols, au voisinage de la saturation, par l'utilisation des infiltrometres a disques a succion controlee. L'etude s'articule autour de trois parties. La premiere partie fait l'inventaire des methodes existantes fondees sur l'analyse des regimes permanents d'infiltration axisymetrique appliquee a la solution de wooding. On montre que celle reposant sur l'application d'une serie de potentiels imposes est la plus stable et n'est pas limitee aux sols quasi-lineaires. La deuxieme partie montre comment ex
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7

Karnieli, Arnon 1952. "Storm runoff forecasting model incorporating spatial data." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/191138.

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This study is concerned with design forecasting of storm hydrographs with emphasis on runoff volume and peak discharge. The objective of the study was to develop, calibrate and test a method for forecasting storm runoff from small semi-arid watersheds using an available prediction model. In order to turn the selected prediction model into a forecasting model an objective procedure in terms of an API-type model was developed for evaluating the soil moisture deficit in the upper soil layer at the beginning of each storm. Distinction was made between the physically-based parameters and the other
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8

Sen, Sumit Srivastava Puneet Clement Prabhakar Thangadurai. "Runoff generation in pastures of the Appalachian plateau region of North Alabama." Auburn, Ala, 2009. http://hdl.handle.net/10415/1714.

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9

Bailey, Chrissy. "Low impact development barriers towards sustainable stormwater management practices in the Puget Sound region /." Online pdf file accessible through the World Wide Web, 2003. http://archives.evergreen.edu/masterstheses/Accession86-10MES/2003Bailey_CMESThesis.pdf.

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10

French, Rachel. "Modelling urban runoff : volume and pollutant concentration of the Barker Inlet Wetland Catchment." Title page, abstract and contents only, 1999. http://web4.library.adelaide.edu.au/theses/09ENS/09ensf875.pdf.

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Bibliography :leaves 158-171. A monitoring program, funded by the South Australian government (through the former MFP Development Corporation), was established to monitor the quality and quantity of storm water entering and leaving the wetland. This study formed part of the funded program. Simple regression models were developed; and will assist in the monitoring of performance of the wetland to alleviate the pollutant load into the Barker Inlet.
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11

Fionda, Alexander Peter Anthony. "Rainfall-runoff model application in ungauged catchments in Scotland." Thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-162181.

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The conceptual rainfall-runoff model Hysim is used to estimate the flow in ungauged catchments in Scotland by Scottish Water. However, there are non-quantified uncertainties associated with the outcomes of the modelling strategy used. In order to identify and quantify these uncertainties it was necessary to use the framework of proxy-basin validation in order to evaluate the performance of different modelling strategies.   The proxy-basin validation test requires hydrologically analogous catchments for the evaluation of models, a Region Of Influence regionalisation method was used in order gro
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12

Dupigny, Lesley-Ann. "An analysis of the temporal and spatial variability of the rainfall and runoff regimes of drainage basins in Trinidad /." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61183.

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The interannual variability of tropical climates, including the tropical Marine climate, is best reflected in the rainfall activity of a given area. The effects of such variability are manifested in a number of ways on the physical landscape. However, this study focused on the ways in which the variability of the rainfall received on the Caribbean island of Trinidad, influenced the resulting streamflow discharges for different basins on the island. Various techniques such as time series analysis and spectral analysis, were used to identify the physical mechanisms, both local and non-variations
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13

Mohammed, Ibrahim Nourein. "Relationships between Runoff, Land Cover and Climate in the Semi-Arid Intermountain Region of the Western U.S.A." DigitalCommons@USU, 2012. https://digitalcommons.usu.edu/etd/1158.

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Land cover and climate change with their associated impacts on runoff are among the pressing areas of research within the western United States. In the first paper of this dissertation, we identified a total of 39 watersheds draining to U.S. Geological Survey (USGS) streamflow gauges, chosen either from the USGS Hydroclimatic Climatic Data Network of gauges that are minimally impacted by anthropogenic alterations, or because they have long, relatively continuous streamflow records and are representative of large areas within the study region in Utah. In each of these watersheds we examined tre
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14

Cortizo, Maruxa Malvar. "Assessing the combined effect of land management and wildfire on runoff and soil erosion in north central Portugal." Doctoral thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/11785.

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Doutoramento em Ciências e Engenharia do Ambiente<br>Strong and sometimes extreme responses in runoff and soil erosion following wildfires have been reported worldwide. However, in the case of North-Central Portugal, little research had been carried out regarding the hydrologic and erosive impacts of several land management activities in recently burnt areas (such as ground preparation, post-fire logging or post-fire mitigation treatments). This study aims to assess post-fire runoff and soil erosion response on Eucalypt and Maritime pine plantations during the first, second and third years f
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15

Bandeen, Reid Francis 1957. "Simulations of dry well recharge in the Tucson Basin, Arizona." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276654.

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The variably saturated flow model Unsat 2 was used for three case study simulations of dry well recharge in the Tucson Basin, Arizona. Dry well design, and rainfall/runoff and vadose zone conditions representative of the locality were assumed in the simulations to address travel time to the regional aquifer, rates and extent of radial flow, and relative degree of solute attenuation by sorption and dilution with regional groundwater. Soil specific surface was used to estimate relative degree of sorption among the three cases. One case of uniform soil composition and two cases of layered soil co
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16

Kabeya, Naoki. "Characterization of catchment runoff processes using seasonal variations of stable isotope ratios in water in the Asian monsoon region." Kyoto University, 2009. http://hdl.handle.net/2433/124035.

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Kyoto University (京都大学)<br>0048<br>新制・論文博士<br>博士(農学)<br>乙第12349号<br>論農博第2711号<br>新制||農||973(附属図書館)<br>学位論文||H21||N4475(農学部図書室)<br>UT51-2009-D564<br>京都大学大学院農学研究科地域環境科学専攻<br>(主査)教授 谷 誠, 教授 舟川 晋也, 教授 水山 高久<br>学位規則第4条第2項該当
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17

Brown, Kristopher Ryan. "Sediment Delivery from Reopened Forest Roads at Stream Crossings in the Virginia Piedmont Physiographic Region, USA." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/48424.

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Efforts to control surface runoff and erosion from forest roads at stream crossings are critical for the protection of aquatic ecosystems in forests. In this research, annual and event-based sediment delivery rates were estimated for reopened legacy roads at forest stream crossings in the Virginia Piedmont physiographic region, USA. Sediment delivery rates were compared among stream crossing approaches with diverse intensities of best management practice (BMP) implementations for surface cover and water control. Model predictions from the Water Erosion Prediction Project (WEPP) were compare
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18

Gillilan, John Allen. "Correlation and characterization of water quality and land use and land cover in the Baker's Run Watershed, WV, Mid-Atlantic Region." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=3260.

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Thesis (M.S.)--West Virginia University, 2003.<br>Title from document title page. Document formatted into pages; contains ix, 99 p. : ill. (some col.), maps (some col.). Includes abstract. Includes bibliographical references (p. 69-71).
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19

Bobe, Bedadi Woreka. "Evaluation of soil erosion in the Harerge region of Ethiopia using soil loss models, rainfall simulation and field trials." Thesis, University of Pretoria, 2004. http://hdl.handle.net/2263/26929.

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Accelerated soil erosion is one of the major threats to agricultural production in Ethiopia and the Harerge region is not exceptional. It is estimated that about 1.5 billion tones of soil is being eroded every year in Ethiopia. In the extreme cases, especially for the highlands, the rate of soil loss is estimated to reach up to 300 t ha-1yr-1 with an average of about 70 t ha -1yr-1 which is beyond any tolerable level. The government have made different attempts to avert the situation since 1975 through initiation of a massive program of soil conservation and rehabilitation of severely degraded
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20

Duncan, Phillip Brent. "Modeling of Land Use Change Effects on Storm Water Quantity and Quality in the City of Carrollton and the North Texas Area." Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc4368/.

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Development and population are rapidly increasing in urbanizing areas of North Texas and so is the need to understand changes in storm water runoff flow and its contamination by nutrients, sediment, pesticides and other toxicants. This study contributes to this understanding and has two primary components: first, development of a graphical user interface for a geographic information system and storm water management database, and second, performing a two-scale hydrological modeling approach (the US Corp of Engineers HEC-HMS model and the US Environmental Protection Agency SWMM model). Both pri
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21

Shem, Willis Otieno. "Biosphere-Atmopshere Interaction over the Congo Basin and its Influence on the Regional Hydrological Cycle." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/11558.

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A comprehensive hydrological study of large watersheds in Africa e.g. the Congo basin and the Nile basin has not been vigorously pursued for various reasons. One of the major reasons is the lack of adequate modeling tools that would not be very demanding in terms of input data needs and yet inclusive enough to cover such wide extents (over 3 million square kilometers for the Congo basin). Using a coupled run of the Community Atmospheric model (CAM3) and Community Land Model (CLM3) components of the Community Climate System of Models (CCSM), this study looks into the spatial and temporal var
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22

Puech, Christian. "Détermination des états de surface par télédétection pour caractériser les écoulements des petits bassins versants : application à des bassins en zone méditerranéenne et en zone tropicale sèche." Grenoble 1, 1993. http://www.theses.fr/1993GRE10175.

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La liaison entre la teledetection des etats de surface et l'hydrologie est etudiee sur deux sites, revelant l'importance des problemes d'echelle et la necessite d'informations hydrologiques de type versant. Sur les bassins du real collobrier (var, france) apres des corrections imposees par le fort relief, le traitement de l'imagerie satellitaire conduit a une cartographie des essences forestieres. La part d'ecoulement relative a chaque zone homogene est calculee a des pas de temps annuel, trimestriel, mensuel et sur des episodes. Une liaison coherente entre zones et types d'ecoulement est obte
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23

Le, Meillour Françoise. "Etude expérimentale et numérique de la contribution des eaux de surface et de subsurface à la formation des crues : conséquences sur l'hydrogramme d'un bassin versant (application au Real Collobrier)." Phd thesis, Université Joseph Fourier (Grenoble), 1996. http://tel.archives-ouvertes.fr/tel-00694046.

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L'objectif de ce travail est une conlribution à l'analyse des processus de formation des crues sur un bassin méditerranéen à l'occasion des épisodes pluvieux. Nous avons essayé de comprendre les caractéristiques hydrologiques d'un bassin par une démarche mécaniste. Pour cela, nous avons étudié la part, dans le débit de la rivière pendant les crues, du débit provenant d'un écou!ement soit par ruissellement généralisé, soit souterrain ou de subsurface, soit sur zones saturées contributives. Le bassin versant a été schématisé comme la succession de deux unités hydrologiques: le versant et le rése
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24

"Hydrological regime changes in a Canadian Prairie wetland basin." Thesis, 2015. http://hdl.handle.net/10388/ETD-2015-07-2124.

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The hydrology of the Canadian Prairies has been well described in the scientific literature. 20th C observations show that snowmelt over frozen soils accounted for over 80% of the annual runoff, and streamflow hydrographs peaked in April and ceased in May due to a lack of runoff or groundwater contributions. Since then, the region has undergone rapid changes in land use and climate, both which affect streamflow generating processes. This study evaluates the detailed hydrological impact of regional changes to climate on an instrumented research catchment, the Smith Creek Research Basin (SCRB);
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Fraindová, Kateřina. "Změny srážko-odtokového režimu v povodí řeky Athabaska." Master's thesis, 2014. http://www.nusl.cz/ntk/nusl-337666.

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Athabasca River Basin is located in an area which is affected by many factors. During the last century, the global warming manifests here, resulting primarily into increasing temperatures and glaciers melting in the headwaters area. Much of the middle reaches watershed is used for agriculture, for irrigation of which water from the Athabasca River is pumped. In recent years, controversial development of bituminous sands mining is carried out in the basin. Although it represents a real energy source, the mining requires large amounts of water, which is largely drawn from the Athabasca River. Th
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Volková, Alena. "Změny ve srážko-odtokovém režimu v povodí Stropnice." Master's thesis, 2010. http://www.nusl.cz/ntk/nusl-285578.

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This paper deals with the rainfall-runoff regime in the Stropnice river-basin and its development. The aim of this paper is to answer the question of‚were there any changes in the runoff regime during the period 1945 - 2009, and if so, were these changes conditioned by climate or were they caused by human interventions' (e. g. river network modification, changes of the land cover, drainage systems development etc.). The single-mass and double- mass curves were used as the primary methodology. The homogeneity of the time series of mean discharge, precipitation and air temperature were statistic
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Kalkus, Jan. "VLIV ODVODŇOVACÍCH PŘÍKOPŮ NA HYDROLOGICKÝ REŽIM LESNÍHO POVODÍ." Master's thesis, 2016. http://www.nusl.cz/ntk/nusl-343880.

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The main task of this diploma thesis is to evaluate function of system of open drainage channels and its impact on runoff from Tetřívčí brook forest catchment in Šumava mountains region, upper basin of the Blanice River. Catchment area is only 1,62 km2 and total length of all channels is over 12 km, so it's very important feature of this catchment. The first task was to explore to explore all the channels and set them to the map. Most of used data were measured manually, only precipitation and water level in main stream were measured by automatic gauges. It's not possible to compare results wi
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Vlach, Vojtěch. "Hydrologické sucho v pramenných oblastech Krušných hor." Master's thesis, 2019. http://www.nusl.cz/ntk/nusl-397115.

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Changes in the hydrological cycle are one of the expected impacts of climate change. Until recently, Central European mountain ranges have not been considered to be affected by water scarcity. Nevertheless, recent years have suggested an increasing risk of drought occurrence also in these regions, which have a major impact on the water supply to rivers that drain them. The master thesis deals with the evaluation of hydrological drought in the headwater areas of three catchments in the Ore Mountains for the period from 1967 to 2018. The main aim is to compare the of hydrological drought charact
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Stádníková, Monika. "Ekologický stav vodních toků v urbanizovaných územích. Modelová studie povodí Rokytky." Master's thesis, 2014. http://www.nusl.cz/ntk/nusl-341547.

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The thesis deals with the status assessment of the stream in urban areas. The study area is the stream Rokytka in Prague. The method Hydroecological monitoring HEM (Langhammer, 2007, 2013) was used for the thesis based on field hydromorphological survey. This method is compatible with the Water Framework Directive 2000/60/EC. The thesis also includes assessement of the rainoff regime and water quality based on the available hydrological and hydrochemical data. As a final result, it was found out the stream Rokytka achieves III. hydromophological state - average state. The water quality state d
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Blahušiaková, Andrea. "Dopad regionální změny klímy na hydrologický režim s ohledem na extrémní situace." Doctoral thesis, 2019. http://www.nusl.cz/ntk/nusl-404338.

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Investigation of changes in the rainfall-runoff regimes of rivers and its extremes has become more important especially in the context of ongoing and future climate changes. The main aim of this study is to investigate the key factors involved in these changes and thus influence the hydrological regime. Trends and changes in climatic and hydrological variables are detected and the development of flood and drought extremes is assessed. Several methods are used to identify trends and examine their changes; the Mann-Kendall test, linear regression, simple mass curves, and comparative analysis (IH
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Jedličková, Šárka. "Vývoj odtoku vody ve vybraných povodích Kyrgyzského hřbetu, Ťan-Šan." Master's thesis, 2019. http://www.nusl.cz/ntk/nusl-397071.

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The main objective of this paper was to investigate runoff changes in the catchment Ala-Arca, Alamaedin and Kara-Balta in Kyrgyzstan, as well as change in climate conditions from available stations in the area. The runoff, precipitation, and temperature series were subjected to monthly, seasonal and annual analyses based on available data. Both absolute and relative data homogeneity were verified using statistical tests such as the Mann-Whitney-Pettit test, the SNHT test, and the WiIlcoxon's two- sample test for absolute homogeneity, and the Alexandersson's test for relative homogeneity. The M
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Špringerová, Pavla. "Změny koncentrací organického uhlíku v povrchových vodách v pramenných oblastech." Master's thesis, 2019. http://www.nusl.cz/ntk/nusl-411443.

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Diploma thesis is focused on changes of organic carbon (OC) in surface waters in headwater areas. Thesis is in its theoretical part focused on the literature study of currently published research results of the issue. The important part is finding the possible causes of OC variability, especially landcover and soil environment. The practical part is devoted to research in experimental basins of KFGG, namely in the upper Vydra, Blanice and Rolava. The aim of this work is to clarify the relationships between organic matter concentrations and discharge rates regarding to hydrological extremes. Fu
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Navrátilová, Denisa. "Změny geochemismu povrchových vod ve vybraných povodích Krušných hor." Master's thesis, 2020. http://www.nusl.cz/ntk/nusl-436418.

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This master thesis focuses on an analysis of surface water chemistry, long-term trends and the impact of drought on changes in concentrations of selected parameters in the upper Svatava, Rolava and Načetínský potok basins located in the Ore Mountains. Research on water quality in mountain spring areas is important, the consequences of various changes can be easily observed there. This work analyses the changes in surface water chemistry and discusses their possible causes, especially the impact of peat bogs and dry episodes. The parameters of water temperature, conductivity, pH, BOD5, COD, TOC
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"Identifying remediation techniques and quantifying TMDL regulated pollutants for stormwater runoff in the Los Angeles region." UNIVERSITY OF SOUTHERN CALIFORNIA, 2010. http://pqdtopen.proquest.com/#viewpdf?dispub=3368716.

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Wegener, Mark W. "Long-term land use/cover change patterns in the Yahara Lakes region and their impact on runoff volume to Lake Mendota." 2001. http://catalog.hathitrust.org/api/volumes/oclc/50083568.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 2001.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 65-68).
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"Controls on connectivity and streamflow generation in a Canadian Prairie landscape." Thesis, 2015. http://hdl.handle.net/10388/ETD-2015-04-2013.

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Linkages between the controls on depressional storage and catchment streamflow response were examined in a wetland dominated basin in the Canadian Prairie Pothole region through a combination of field monitoring and modelling. Snowmelt, surface storage, water table elevation, atmospheric fluxes, and streamflow were monitored during spring snowmelt and summer in a 1 km2 sub-catchment containing a semi-permanent pond complex connected via an intermittent stream. Snow accumulation in the basin in spring of the 2013 study year was the largest in the 24-year record. Rainfall totals in 2013 were cl
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Kim, Young-Kil. "Nutrient sources and dynamics in the Parafield stormwater harvesting facility and implication to water quality control." 2010. http://hdl.handle.net/2440/57033.

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The quantity of stormwater runoff from the city of Adelaide almost matches the demand for drinking water. It therefore becomes increasingly important as an alternative source for water supply. This research focused at the Parafield Stormwater Harvesting Facility near Adelaide in order to better understand: (1) nutrient dynamics between the water column, sediments and plant community, (2) allochthonous and autochthonous sources of nutrients and (3) nutrient retention capacity of the reed bed. A weekly monitoring programme for the physical and chemical parameters of the water column, sediment an
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Li, Wen. "Mechanisms for phosphorus elimination in constructed wetlands: a pilot study for the treatment of agricultural drainage water from dairy farms at the Lower River Murray, South Australia / Li Wen." 2002. http://hdl.handle.net/2440/21868.

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Includes list of publications issued during the candidature.<br>Bibliography: leaves 176-197.<br>iii, ix, 197, [22] leaves : ill., maps ; 30 cm.<br>Title page, contents and abstract only. The complete thesis in print form is available from the University Library.<br>Phosphorus retention was measured in five pilot-scaled constructed wetlands with different configurations in terms of macrophyte species and substrates in order to evaluate the phosphorus removal efficiency of water plants and substrates in experimental ponds; assess the contribution of macrophytes to phosphorus removal through dir
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Alkhoury, William. "Hydrological modelling in the meso scale semiarid region of Wadi Kafrein / Jordan -The use of innovative techniques under data scarcity." Doctoral thesis, 2011. http://hdl.handle.net/11858/00-1735-0000-0006-B2FB-6.

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