Dissertations / Theses on the topic 'Groundwater-river interactions'
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Ivkovic, Karen Marie-Jeanne, and kardami@optusnet com au. "Modelling Groundwater-River Interactions for Assessing Water Allocation Options." The Australian National University. Centre for Resources, Environment and Society, 2007. http://thesis.anu.edu.au./public/adt-ANU20080901.134545.
Full textMadlala, Tebogo Eugene. "Determination of groundwater-surface water interaction, upper Berg River catchment, South Africa." University of the Western Cape, 2015. http://hdl.handle.net/11394/5331.
Full textThe present study investigated the application of a multi-method approach to determine groundwater-surface water (GW-SW) interactions to quantify and characterize the quality of water resources in a fractured rock aquifer system in upper catchment of the Berg River (G10A). Demonstrating methods for improved understanding of groundwater and surface water interactions is important for informing development of strategies that ensure effective utilization and management of water resources. Applying a single method to inform innovative strategies for water resources has proved futile. The current study shows how the use of several methods can provide the basis for devising practical strategies for water resource utilization and management. The three methods were applied as follows: First, the base flow separation was used whereby the Chapman and Lynne & Hollick digital filter algorithms were applied to time-series streamflow data from four stream gauging stations in the catchment. The computation from algorithms on three sites (gauging stations) showed that the mean Base Flow Index (BFI) value ranged between 7%-8% for the 2012-2014 periods. This means that discharges from subsurface water storages dominate stream flows throughout the study period. Secondly, the quality of groundwater and surface water was sampled using standard methods. Piper Diagrams generated on Aquachem™ software and radial charts were used to identify the predominant hydrochemical facies. Results showed that Na-Cl was the predominant GW and SW water-type. This means that both GW and SW are mainly influenced by recharging surface water as well as interaction occurring between the rock matrices and infiltrating water. Multivariate statistical analyses were used to evaluate the factors controlling GW and SW chemistry in the upper Berg River catchment and the results showed that GW and SW are influenced by natural processes. Two main factors (a. & b.) were extracted which explained 71.8% of the variation in both GW and SW physicochemical parameters. These factors include water-rock interactions and the recharge of surface water. Cluster Analysis extracted four major clusters that grouped sites with similar physicochemical characteristics together. Finally, differential stream gauging was applied to a 600m reach above the Berg River Dam. Three 200m sub-reaches were used to compute differences in flows between sub-reaches. Stream flow at each sub-reach was estimated using mass balance equations with electrical conductivity measurements during instant salt tracer injection tests. Results indicated that during both the wet season (high flow) dry season (low flow), the river continuously lost water to the subsurface. This was demonstrated by the 0.91m³/s and 2.24m³/s decrease in stream flow along the 600m reach. Dry season flow decreases were less than wet season flow decreases, indicated by markedly lower flow loss in respect to the wet season. This confirms results of the analysis of base flow separation, which indicated that discharges from subsurface storages dominate stream flows during low flow periods. The differential stream gauging approach did not provide distinct points along the selected stream reach where GW-SW interaction occurred; rather it provided a holistic representation of seasonal flow variations along the selected reach. This study showed that upper Berg River catchment is dependent on discharges from subsurface water storages to maintain dry season flows. Furthermore, this study showed that infiltration of surface water and discharge of subsurface water transfers the respective chemical signature of the contributor, meaning that the transfer of water of suitable quality will reduce contamination in the receiving water body (i.e. surface water). Transfer of water between subsurface and surface water contributed an average of 8% of the gauged flows in the catchment between 2012 and 2014, suggesting that the groundwater recharge process dominates this catchment.
Foglia, Laura. "Alternative groundwater models to investigate river-aquifer interactions in an environmentally active alpine floodplain /." Zürich : ETH, 2006. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16799.
Full textSimpson, Scott. "Modeling Stream-Aquifer Interactions During Floods and Baseflow: Upper San Pedro River, Southeastern Arizona." Thesis, The University of Arizona, 2007. http://hdl.handle.net/10150/193338.
Full textWickham, Matthew Prior 1959. "The geochemistry of surface water and groundwater interactions for selected Black Mesa drainages, Little Colorado River basin, Arizona." Thesis, The University of Arizona, 1992. http://hdl.handle.net/10150/192063.
Full textNaugler, Trudy Lynn. "Groundwater - surface water interactions in the Salmon River Watershed, BC : integrating spectroscopy, isotopes, water quality, and land use analyses." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/31782.
Full textScience, Faculty of
Resources, Environment and Sustainability (IRES), Institute for
Graduate
Sprenger, Christoph [Verfasser]. "Surface-groundwater interactions associated with river bank filtration in Delhi (India) : investigation and modelling of hydraulic and hydrochemical processes / Christoph Sprenger." Berlin : Freie Universität Berlin, 2011. http://d-nb.info/1026069564/34.
Full textFleming, Brandon J. "Effects of anthropogenic stage fluctuations on surface water/ground water interactions along the Deerfield River, Massachusetts." Amherst, Mass. : University of Massachusetts Amherst, 2009. http://scholarworks.umass.edu/theses/226/.
Full textHolmes, Stuart W. "Investigation of Spatial and Temporal Groundwater Thermal Anomalies at Zanesville Municipal Well Field, Ohio: Implications for Determination of River-Aquifer Connectivity Using Temperature Data." Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1462026430.
Full textGrapes, Timothy Rupert. "Groundwater-river interaction in a chalk catchment : the River Lambourn, UK." Thesis, University of Birmingham, 2004. http://etheses.bham.ac.uk//id/eprint/4036/.
Full textWorakijthamrong, Surin. "Groundwater-River Interaction in the Context of Interbasin Transfer." Thesis, University of Bristol, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526010.
Full textPorter, Sandra. "Groundwater/surface water interaction in the Raisin River watershed, near Cornwall, Ontario." Thesis, University of Ottawa (Canada), 1996. http://hdl.handle.net/10393/10133.
Full textLovell, Daniel Martin. "Conjunctive management of groundwater and surface water in the Upper Ovens River Valley /." Connect to thesis, 2009. http://repository.unimelb.edu.au/10187/5724.
Full textJahnke, Philip, and Philip Jahnke. "Modeling of groundwater flow and surface/groundwater interaction for the San Pedro River Basin from Fairbank to Redington, Arizona." Thesis, The University of Arizona, 1994. http://hdl.handle.net/10150/626882.
Full textCameron, Stewart Graham. "A hydrogeological study of the interaction between Avon River baseflow and shallow groundwater, Christchurch, New Zealand." Thesis, University of Canterbury. Geology, 1992. http://hdl.handle.net/10092/8023.
Full textBanda, Vincent Santos Dzulani. "Assessing hydrogeological characteristics to establish influence of aquifer-river interaction in non-perennial river systems, Heuningnes catchment." University of the Western Cape, 2019. http://hdl.handle.net/11394/7007.
Full textOver half of total flows in the global river network are composed of non-perennial rivers. This indicates the importance of non-perennial river systems in supporting the biodiversity. It has been established that groundwater is one of the elements that control the flow regimes and classification (whether perennial or not) of a river system. However, the use of hydrogeological characteristics to establish the influence of groundwater on non-perennial river systems remain to be widely unpublished. This study, therefore, intends to conceptualize and explain the role of hydrogeological characteristics in non-perennial rivers, using the Heuningnes catchment in the Western Cape Province of South Africa as a case study. The study has argued that thorough characterization of aquifers is essential in order to adequately establish the extent of aquifer-river connectivity and how groundwater influences flows and chemical loading in non-perennial river systems. The study has three objectives namely: (i) to determine the aquifer characteristics (ii) to characterise the aquifer-river interaction and (iii) to conceptualize the groundwater flow system. Records review, field, analytical and laboratory-based methods were used to collect and interpret geological, groundwater level, pumping test, hydro-chemical and environmental stable isotopic data in order to characterise groundwater occurrence, flow system and its interaction with the rivers of the study area. Water samples were taken from groundwater, surface water and rainfall during both dry and wet periods. Results show that the study area has a topography-controlled water table with shallow depth to groundwater levels ranging on average from 3 - 10 m, which result into largely a local groundwater flow system. Transmissivity values determined from constant rate pumping test range between 0.17 and 1.74 m2/day. Results exhibit that the low transmissivity values are associated with the weathered nature of the Table Mountain sandstone and the unfractured Bokkeveld shale formations. Hydrochemical data results indicate that both groundwater and river samples in the upstream part of the study area are characterised as fresh water with TDS values of less than 1000 mg/l while the downstream part has saline waters with TDS ranging from 2000 – 35000 mg/l. Results also show that Na-Cl is the dominant water composition for both groundwater and river water. The order of major ion dominance is similar for the two water sources, with concentration ranges from high to low in the order of Na+>Mg2+>Ca2+>K+ and Cl->SO42->HCO3- for cations and anions respectively. The similar patterns and trends in salinity and major ion data suggest the connectivity between the aquifer and the river. Environmental stable isotope data indicate river samples in upstream areas having depleted δ18O (-4.3 to -5.12‰) and δ2H (-22.9 to -19.3‰) signatures similar to groundwater indicating a stable and continuous groundwater contribution to the river flows. Meanwhile, high evaporative enrichment of δ18O (1.13 to 7.08‰) and δ2H (38.8 to 7.5‰) is conceived in river samples from downstream areas. Ionic ratios and isotope-salinity relationships suggest that groundwater chemistry is derived from sea sprays, evaporation and dissolution of Bokkeveld shale host rock. Geological, hydrogeological, hydrochemical and environmental stable isotope data were used to develop a conceptual hydrogeological model which explains the role of groundwater in non-perennial river systems. Results indicate that the North East – South West fault on the north-eastern part of the study area seem to act as a conduit to groundwater flow thereby supplying water to the upstream rivers while the East -West fault in the northern part seem to act as a barrier to groundwater flow resulting into a hydraulic discontinuity between upstream and downstream areas. Meanwhile, the relatively low conductive formation in the downstream areas coupled with a relatively low hydraulic gradient (0.000843) suggests there is slow Darcian groundwater flows resulting in less flushing and high salinization of groundwater. Eventually, in the downstream part of the study area there is slow and minimal groundwater discharge to the rivers resulting into groundwater failing to maintain the river flows and pools. In general, rivers of the study area largely gain water from groundwater although the amount of groundwater discharge varies from one river segment to another in both upstream and downstream parts. The conceptual model has led to the development of a proposed optimum management of non-perennial rivers including the effects of groundwater abstraction on the river flows.
2022-09-01
Donelan, Jack E. "Groundwater-Surface Water Interaction in the Kern River| Estimates of Baseflow from Dissolved Radon Analysis and Hydrograph Separation Techniques." Thesis, California State University, Long Beach, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10841176.
Full textGeochemical mixing methods utilizing 222Rn and chloride and statistical hydrograph separation techniques were carried out in an attempt to understand baseflow dynamics in a section of the Kern River in the Sierra Nevada of Southern California. 222Rn has become a valuable tool for evaluating groundwater inflow to a river, particularly when groundwater and surface water have similar major ion geochemistry. When using geochemical methods it is important to minimize uncertainty through comparison with separate tracers and techniques, though this is complicated in this setting. Snow melt discharge and regulation of natural river flow cause hydrograph-based techniques to suffer from inaccuracies. Geochemical mixing using major ions and stable isotopes are complicated by the chemical similarity between surface water and groundwater. 222Rn is a powerful tool to elucidate this relationship in this setting if major uncertainties, like rate of radon degassing and parafluvial and hyporheic radon production can be constrained.
Tien, Anh Tho. "The influence of climate variability on hydrological processes and surface and groundwater hydrochemistry : the tropical upper roper river catchment, Northern Territory, Australia." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/44150/1/Anh_Tien_Thesis.pdf.
Full textVionnet, Leticia Beatriz, and Thomas Maddock. "Modeling of Ground-Water Flow and Surface/Ground-Water Interaction for the San Pedro River Basin Part I Mexican Border to Fairbank, Arizona." Department of Hydrology and Water Resources, University of Arizona (Tucson, AZ), 1992. http://hdl.handle.net/10150/614152.
Full textZlatos, Caitlan McEwen. "Using Geochemical Tracers to Determine Aquifer Connectivity, Flow Paths, and Base-Flow Sources: Middle Verde River Watershed, Central Arizona." Thesis, The University of Arizona, 2008. http://hdl.handle.net/10150/193443.
Full textYitbarek, Baye Andarge. "Hydrogeological and hydrochemical framework of complex volcanic system in the Upper Awash River basin, Central Ethiopia : with special emphasis on inter-basins groundwater transfer between Blue Nile and Awash rivers." Poitiers, 2009. http://theses.edel.univ-poitiers.fr/theses/2009/Yitbarek-Baye-Andarge/2009-Yitbarek-Baye-Andarge-These.pdf.
Full textIntegrated approach has been used to investigate the hydrogeological framework of a complex fractured volcanic aquifer system in the Upper Awash river basin located at the western shoulder of the Ethiopian rift. The groundwater flow system and mechanism of recharge of different aquifers have been studied using conventional hydrogeological field investigations, hydrochemistry, isotope hydrology and numerical groundwater flow modeling techniques. Litho-hydrostratigraphic relationships were constructed from lithologic logs obtained from exploratory drilling of deep boreholes. The result indicates quite complex flow pattern and hydraulic characteristics of the different volcanic aquifers. The litho-hydrostratigraphic correlation indicates that the permeable and porous scoraceous lower basaltic aquifer is extended laterally all the way from the Blue Nile Plateau to the study area. . The analysis of the temporal and spatial variation of water samples from different places revealed clear undwater-surface water interactions. New evidences have also emerged on the inter-basin groundwater transfer. Two distinct regional basaltic aquifers (Upper and lower) are identified showing distinct hydrochemical and isotopic signatures. In the southern part of the study area the upper and lower aquifers form one unconfined regional aquifer system. In the northern and central part of the basin, it appears that the two systems are separated by regional aquiclude forming confined aquifers, in places with artesian wells. The groundwater from the deep exploratory wells (>250m) tapping the lower basaltic aquifer and wells located in the south were found to be moderately mineralized (TDS: 400-600 mg/l), with relatively depleted stable isotope composition and with almost zero tritium. In contrast, the upper shallow aquifer has lesser ionic concentration, more isotopically enriched. Evidences from the different methods clearly indicate inter-basin groundwater transfer from the Blue Nile basin to the Upper Awash basin. The evidences also converge to testify common origin of recharge, presence of hydraulic connectivity for systems tapping the lower basaltic aquifer. This has enormous practical implication in finding large groundwater reserve at a greater depth that can solve the current water supply problems of the community including the capital Addis Ababa. It will also have important role in finding more regional aquifers along the plateau-rift margins in many areas having similar hydrogeological setup as the study area
Arantes, Eudes José. "Emprego de infiltrômetros na caracterização da interação entre rio e aqüífero." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-15062007-162427/.
Full textThe purpose of this work is to quantify the river-aquifer interaction in a river basin through the use of infiltrometers and observation wells located on the banks. Onça Creek, a tributary of the Jacaré-Guaçú river in the state of São Paulo, was chosen for this study being located in the recharge area of the regional Guarani aquifer. Infiltrometers were placed at three sections in the bed of Onça Creek. Analyzing the behavior of the river-aquifer interaction during 7 months, it is found that the average exfiltration rate is of the order of 300 mm/day in the seepage area. Further, the seepage rate is found to be influenced by rainfall events, atmospheric pressure and rate of rise or fall of river stage. In view of the satisfactory experimental results obtained in this study, the use of infiltrometers for the determination of the river-aquifer interaction is recommended as a simple and sound procedure if due care is taken in their installation in the river bed.
Kjellander, Kalle. "River-Aquifer Interaction in the Uppsala Esker - a Modelling Study of a Proposed Drinking Water Production site." Thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-355671.
Full textGävle och Älvkarlebys kommuner är i behov av nya grundvattentäkter för att kunna försörja invånarna med dricksvatten i framtiden. Ett område som är av intresse för de två kommunerna är ett grundvattenmagasin i Uppsalaåsen intill Dalälven mellan Älvkarleby och Skutskär. Vid ett dricksvattenuttag kan vattenbalansen i magasinet ändras. I magasinet uppskattas grundvattenbildningen vara för låg för att pumpa upp nog mycket vatten och bibehålla en stabil dricksvattenförsörjning. När uttaget av grundvatten är högre än grundvattenbildningen sänks grundvattenytan och vatten flödar från andra delar av magasinet eller älven för att kompensera. Älvvattnet bedöms ha en stark hydraulisk koppling med grundvattnet, vilket innebär att det finns en risk att älvvattnet infiltrerar i magasinet och sänker kvalitén på framtida dricksvatten.Konsultföretaget Midvatten AB har i uppdrag att bedöma möjligheten till ett framtida dricksvattenuttag. Midvatten har som lösning anlagt stationer med sprinklerinfiltration för att i framtiden kunna infiltrera avhumifierat älvvatten som på sikt omvandlas till grundvatten. Denna konstgjorda infiltration är också tänkt att hindra älvvatten från att ta sig in i magasinet genom att förse magasinet med den mängd vatten som går förlorad av dricksvattenuttag. Hur mycket älvvatten som tar sig in till grundvattenmagasinet och når brunnarna vid ett framtida uttag och konstgjord infiltration, är dock oklart.Syftet med denna studie var att uppskatta flödet mellan åsens grundvattenmagasin och Dalälven och specifikt infiltrationen av älvvatten. Detta gjordes genom att utveckla en digital MODFLOW-flödesmodell i programmet GMS. Modellen kunde, med hjälp av uppmätta vattennivåer i grundvattenmagasinet och älven, räkna ut hur mycket vatten som flödade in från älven (infiltrerade). Den uträknade infiltrationen låg i genomsnitt på 3-25 l s-1. Infiltrationsmängden berodde på vilken brunn som vattnet pumpades ur, hur mycket som pumpades ut och hur mycket artificiell infiltration som tillfördes i de tre infiltrationsområdena under en period av 2017. Modellen användes även till att uppskatta flödet från älven för 28 tilltänkta scenarier under 2017 med konstant pumpning och konstgjord infiltration i de olika brunnarna och infiltrationsstationerna.Resultaten visade att modellen kunde uppskatta grundvattenmagasinets vattennivåer nära älven men inte på längre avstånd ifrån älven. Detta berodde på att magasinets hydrauliska parametrar inte var korrekt fördelade. Fördelningen kunde ha förbättrats om de baserats på jordarter från borrprotokoll istället för en jordartskarta. Modellen visade att mycket lite älvvatten flödar in i akviferen om vatten artificiellt infiltreras nära älven. För att resultaten av den här studien ska bli tillförlitliga krävs det att resultaten jämförs med andra metoder som använder sig av förslagsvis partikelspårningsmodeller, spårämnesstudier eller flödesmätningar av flodbädden.
Smith, Donna Lee. ""Redox pumping" in the near surface Missoula aquifer iin the flood plain of the Clark Fork River surface, water and groundwater interaction and arsenic related chemistry at a compost facility near a wastewater treatment plant /." CONNECT TO THIS TITLE ONLINE, 2008. http://etd.lib.umt.edu/theses/available/etd-06062008-105818/.
Full textDu, Mingxuan. "Modélisation intégrée des écoulements souterrains et des échanges nappe-rivière dans la basse vallée du Var." Thesis, Université Côte d'Azur (ComUE), 2016. http://www.theses.fr/2016AZUR4107/document.
Full textGroundwater modeling with deterministic model is a complicated process, especially in complex aquiferswhere the quantity and the quality of the measuted data arc not satisfying. The unconfined alluvialaquifet is the main water resource in the lower valley of Vat river, Ftench Riviera, but it faces a thteat ofshortage and pollution. Despite numerous previous studies, the dynamics of the gtoundwater flow in thealluvial aquifer and the characteristics of the rivet-aquifer exchanges ¿re s':ll partially unknown.Therefore the local u/ater management service requires a decision support system PSS) based onnumerical models to ensure a better groundwater management. A hydraulic model is set up withFEFLO!ø software by considedng ptecþitation, evâpotranspiration, gtoundwatet exftacdon and rivetaquiferexchanges. The non-documented groundwater exttaction fot agticultural use and the transferrates in the dverbed along the river have been calibtated. The model has been validated with asimulation of 7266 days. The model is applied to simulate the scenarios of flood and drought events, thepollution events in the unconfined aquifer in the valley and the seawater inrusion in the estuary of Yarriver. These case studies contributes to increase the knowledge of the aquifet. A fust conception of theDSS tool is presented as the last example of model application. A coupling interface is developed thanksto aJava which enables an automatic exchange of data between the groundwater flow model and thesurface wâter flow model built with MII(E2ltr}'/. More tests should be done to validate the couplinginterface
Ivkovic, Karen Marie-Jeanne. "Modelling Groundwater-River Interactions for Assessing Water Allocation Options." Phd thesis, 2006. http://hdl.handle.net/1885/49342.
Full textRheineck, Bruce D. "River-groundwater interactions and implications for wellhead protection at Black River Falls, Wisconsin." 1995. http://catalog.hathitrust.org/api/volumes/oclc/35210639.html.
Full textTypescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 69-74).
Pfeiffer, Shaili Margreta. "Groundwater/surface water interactions in a lowland savanna on the Lower Wisconsin River floodplain." 2001. http://catalog.hathitrust.org/api/volumes/oclc/47228947.html.
Full textTypescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 156-159).
Raanan, Kiperwas Hadas. "Radium Isotopes as Tracers of Groundwater-Surface Water Interactions in Inland Environments." Diss., 2011. http://hdl.handle.net/10161/4971.
Full textGroundwater has an important role in forging the composition of surface water, supplying nutrients crucial for the development of balanced ecosystems and potentially introducing contaminants into otherwise pristine surface water. Due to water-rock interactions radium (Ra) in groundwater is typically much more abundant than in surface water. In saline environments Ra is soluble and is considered a conservative tracer (apart for radioactive decay) for Ra-rich groundwater seepage. Hence in coastal environments, where mostly fresh groundwater seep into saline surface water, Ra has been the prominent tracer for tracking and modeling groundwater seepage over more than three decades. However, due to its reactivity and non-conservative behavior, Ra is rarely used for tracing groundwater seepage into fresh or hypersaline surface water; in freshwater, Ra is lost mostly through adsorption onto sediments and suspended particles; in hypersaline environments Ra can be removed through co-precipitation, most notably with sulfate salts.
This work examines the use of Ra as a tracer for groundwater seepage into freshwater lakes and rivers and into hypersaline lakes. The study examines groundwater-surface water interactions in four different environments and salinity ranges that include (1) saline groundwater discharge into a fresh water lake (the Sea of Galilee, Israel); (2) modification of pore water transitioning from saline to freshwater along their flow through sediments (pore water in sediments underlying the Sea of Galilee, Israel); (3) fresh groundwater discharge into hypersaline lakes (Sand Hills, Nebraska); and (4) fresh groundwater discharge into a fresh water river (Neuse River, North Carolina). In addition to measurement of the four Ra isotopes (
Integration of the geochemical data with mass-balance models corrected for adsorption allows estimating groundwater seepage into the Sea of Galilee (Israel) and the Neuse River (North Carolina). A study of the pore water underlying the Sea of Galilee shows significant modifications to the geochemistry and Ra activity of the saline pore water percolating through the sediments underlying the lake. In high salinity environments such as the saline lakes of the Nebraska Sand Hills, Ra is shown to be removed through co-precipitation with sulfate minerals, its integration into barite (BaSO4) is shown to be limited by the ratio of Ra:Ba in the precipitating barite.
Overall, this work demonstrates that Ra is a sensitive tracer for quantifying groundwater discharge even in low-saline environments. Yet the high reactivity of Ra (adsorption, co-precipitation, production of the short-lived isotopes) requires a deep understanding of the geochemical processes that shape and control Ra abundances in water resources.
Dissertation
Somerville, Peter Douglas. "Streamwater-groundwater interactions and implications for water sharing plans in unregulated catchments : Hunter Valley, eastern Australia." Phd thesis, 2010. http://hdl.handle.net/1885/150497.
Full textWickham, Matthew Prior. "The geochemistry of surface water and groundwater interactions for selected Black Mesa drainages, Little Colorado River basin, Arizona." 1992. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1992_138_sip1_w.pdf&type=application/pdf.
Full textNainggolan, Lamtupa, and 寧古蘭. "Implementation of Regression Kriging method to assess spatial-temporal interactions between groundwater levels and recharge in Choushui River Basin." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/ezy8c5.
Full text國立中央大學
應用地質研究所
106
The sparse distribution of groundwater stations in Choushui River Basin limits spatial-temporal of groundwater level information in these region while this information was crucial needed to know for groundwater conservation purposes. This study reports on an effort to improve the interpolation of monthly groundwater level from groundwater stations using Ordinary Kriging (OK) and Regression Kriging (RK), spanning the period from 2006 to 2015. In order to know the effort precipitation to the groundwater level, the interpolation groundwater level of RK has used to assess spatial-temporal interactions between groundwater levels and recharge in Choushui River Basin. Therefore, a total of 31 groundwater stations and 12 rain gauges data have employed in this research. Basically, OK was done using groundwater level data only. Then, RK was tried to merge the elevation and precipitation as the additional variables for groundwater level. Precipitation data derived by combination rain gauge data and monthly rainfall of Climate Hazards Group InfraRed Precipitation with Station data (CHIRPS). For elevation data, it was provided by Shuttle Radar Topographic Mission (SRTM). The correlation coefficient (r) of linear regression model proved that more than 97 % of the variability in groundwater levels observations can be explained by elevation data. It shows that elevation data can be included as an additional variables of rain gauges data. Conversely, precipitation data in regression model cannot be used in combination with elevation for groundwater levels due to multi-collinearity problem. The correlation coefficient (r), RMSE and NMSE reveals that RK has more robust prediction skill than OK in space and time, especially for prediction an extreme of groundwater level. Spatially, groundwater level elevated during wet months (May and August). The lowest level of groundwater level fluctuation was found to be from last of dry months (March & April), especially in the downstream west part of Choushui River Basin. Furthermore, groundwater recharge has derived and the correlation of groundwater recharge to groundwater level during the wet months was relatively higher than the dry months. Averagely, total amount of groundwater recharge at Choushui River Basin is about 1.40 billion m3 which represents 37 % of 3.77 billion m3 precipitation. As conclusion, the management of groundwater resource should be focused on the upstream area of the Choushui River Basin which has the highest groundwater recharge rate.
Dixon-Jain, Prachi. "Groundwater-surface water interactions : implications for nutrient transport to tropical rivers." Phd thesis, 2008. http://hdl.handle.net/1885/9514.
Full textNzama, Stanley Mvuselelo. "Spatial and temporal assessment of groundwater-surface water interaction, Schoonspruit river catchment, North West, South Africa." Diss., 2016. http://hdl.handle.net/10500/22083.
Full textCentre for Sustainable Agriculture and Environmental Sciences
M. Sc. (Environmental Management)
Chen, I.-Ting, and 陳苡庭. "A Study of Interaction between Groundwater and Surface Water in Zhuoshui River Basin Using Self-Organizing Map." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/46400384257321987018.
Full text淡江大學
水資源及環境工程學系碩士班
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In Taiwan, Zhuoshui River alluvial fan is one of the most abundant groundwater resources that are low-cost and easy-to-use; the area has seriously suffered from overuse of groundwater. For safe yield and effective use of groundwater resources in Zhuoshui River basin, investigating the interaction relationship between surface water and groundwater is important. This study used Self-Organizing Map (SOM) to investigate the effects of hydrological factors, including precipitation and streamflow, on the variability of groundwater level. Through the topological characteristics of SOM, we also discussed the correlation between time or space factors and groundwater level variation. In this study, Zhuoshi River watershed is divided into three areas, the alluvial fan region, mountainous region and chukou region, to investigate the trend effect of rainfall and streamflow factors on these three regions’ groundwater level variation, respectively. The results show that (1) Rainfall factors: For typhoon rainfall or torrential rainfall, rainfall in the midstream and upstream regions has a greater impact on groundwater level variation, and regional heavy rainfall in neighboring regions has a greater impact. Rainfall factors have greater impact on groundwater level variation in the alluvial fan region than in the mountainous region. (2) streamflow factors: The topological characteristics of SOM can display the interaction between the streamflow and groundwater level variation during the alternation processes of wet and dry seasons. During high flow or middle-high flow periods, groundwater levels rise greatly in the mountainous region and the alluvial fan region. During the period of high flow decreasing to middle-high or middle-low flow, the groundwater recharge surface water to attain water balance. The groundwater level variations of chukou(1) and chukou(2) are different from others that are recharged in wet season and discharge in dry season.
Briody, Alyse Colleen. "Flow, nutrient, and stable isotope dynamics of groundwater in the parafluvial/hyporheic zone of a regulated river during a small pulse." Thesis, 2014. http://hdl.handle.net/2152/26921.
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(7026707), Siddharth Saksena. "Integrated Flood Modeling for Improved Understanding of River-Floodplain Hydrodynamics: Moving beyond Traditional Flood Mapping." Thesis, 2019.
Find full textArik, Aida D. "A study of stream temperature using distributed temperature sensing fiber optics technology in Big Boulder Creek, a tributary to the Middle Fork John Day River in eastern Oregon." Thesis, 2011. http://hdl.handle.net/1957/26338.
Full textGraduation date: 2012