Academic literature on the topic 'Groundwater – South Africa – Sandveld'
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Journal articles on the topic "Groundwater – South Africa – Sandveld"
Archer, Emma, Julian Conrad, Zahn Münch, Daleen Opperman, Mark Tadross, and Jaco Venter. "Climate change, groundwater and intensive commercial farming in the semi-arid northern Sandveld, South Africa." Journal of Integrative Environmental Sciences 6, no. 2 (2009): 139–55. http://dx.doi.org/10.1080/19438150902916589.
Full textKnüppe, Kathrin, and Claudia Pahl-Wostl. "Requirements for adaptive governance of groundwater ecosystem services: insights from Sandveld (South Africa), Upper Guadiana (Spain) and Spree (Germany)." Regional Environmental Change 13, no. 1 (2012): 53–66. http://dx.doi.org/10.1007/s10113-012-0312-7.
Full textBROWNING, C., and D. L. ROBERTS. "LITHOSTRATIGRAPHY OF THE WITZAND FORMATION (SANDVELD GROUP), SOUTH AFRICA." South African Journal of Geology 118, no. 3 (2015): 317–22. http://dx.doi.org/10.2113/gssajg.118.3.317.
Full textLück-Vogel, Melanie, Patrick J. O’Farrell, and Wesley Roberts. "Remote sensing based ecosystem state assessment in the Sandveld Region, South Africa." Ecological Indicators 33 (October 2013): 60–70. http://dx.doi.org/10.1016/j.ecolind.2012.11.007.
Full textVegter, J. R. "Groundwater maps of South Africa." Environmental Geology 28, no. 2 (1996): 111–13. http://dx.doi.org/10.1007/bf03036480.
Full textHumphreys, A. J. B., and A. Manhire. "Later Stone Age Settlement Patterns in the Sandveld of the South-Western Cape Province, South Africa." South African Archaeological Bulletin 44, no. 149 (1989): 55. http://dx.doi.org/10.2307/3888323.
Full textMűnch, Zahn, Julian E. Conrad, Lesley A. Gibson, Anthony R. Palmer, and Denis Hughes. "Satellite earth observation as a tool to conceptualize hydrogeological fluxes in the Sandveld, South Africa." Hydrogeology Journal 21, no. 5 (2013): 1053–70. http://dx.doi.org/10.1007/s10040-013-1004-1.
Full textBAUER, AARON M., JACKIE L. CHILDERS, CHRIS BROECKHOVEN, and P. LEFRAS N. MOUTON. "A new Nucras Gray, 1838 (Squamata: Lacertidae) from the Strandveld of the Western Cape, South Africa." Zootaxa 4560, no. 1 (2019): 149. http://dx.doi.org/10.11646/zootaxa.4560.1.8.
Full textKnoetze, Rinus, Antoinette Swart, Ria Wentzel, and Lourens R. Tiedt. "Description of Globodera sandveldensis n. sp. (Nematoda: Heteroderidae) from South Africa." Nematology 19, no. 7 (2017): 805–16. http://dx.doi.org/10.1163/15685411-00003087.
Full textAbiye, Tamiru A., and Joyce T. Leshomo. "Groundwater flow and radioactivity in Namaqualand, South Africa." Environmental Earth Sciences 70, no. 1 (2012): 281–93. http://dx.doi.org/10.1007/s12665-012-2126-9.
Full textDissertations / Theses on the topic "Groundwater – South Africa – Sandveld"
Munch, Zahn. "Assessment of GIS-interpolation techniques for groundwater evaluation : a case study of the Sandveld, Western Cape, South Africa." Thesis, Stellenbosch : University of Stellenbosch, 2004. http://hdl.handle.net/10019.1/16400.
Full textENGLISH ABSTRACT: The Sandveld, a potato growing area of the Western Cape is subject to significant groundwater abstraction for both municipal and agriculture purposes. The climate is arid and sensitive and important ecosystems in the area are showing varying degrees of impact. Management measures are needed to ensure ongoing sustainable development of the area. In this study, different interpolation techniques were evaluated to calculate values for unsampled variables rainfall and groundwater elevation. Local deterministic techniques as well as geostatistical techniques were used. It was found that geostatistical techniques, especially with collateral information, such as topography, provided a more accurate result. For environmental studies of this nature, Kriging is recommended as interpolation technique. The underlying data will determine the selection of the particular type of Kriging. Data was extracted from a customized relational database, geoMon, used for data capture, retrieval, processing and reporting. Ease of data extraction facilitated analysis. The interpolated grids were applied in two scenarios: Recharge calculations and quantification as well as a new classification approach according to Resource Directed Measures (RDM). Management classes were defined based on GIS-derived data.
AFRIKAANSE OPSOMMING: Die Sandveld, ‘n aartappelverbouingsgebied in die Wes-Kaap, ondergaan aansienlike grondwateronttrekking vir beide munisipale sowel as landbou doeleindes. Die klimaat is dor en droog en sensitiewe en belangrike ekosisteme in die area ondervind wisselende impakvlakke. Bestuursmaatreëls word benodig om volhoubare ontwikkeling van die area te verseker. In hierdie studie is verskillende interpolasie tegnieke om onbekende waardes vir veranderlikes gebruik in grondwater evaluasie te bereken, evalueer. Lokale deterministiese tegnieke sowel as geostatistiese tegnieke is gebruik. Geostatistiese tegnieke, veral gebruik saam met addisionele inligting soos topografie, bereken meer akkurate resultate. Vir omgewingsstudies van hierdie aard, word Kriging aanbeveel as interpolasie tegniek. Eienskappe van die onderliggende data word gebruik om die tipe Kriging aan te dui. Data is onttrek uit ‘n gebruikersaangepaste databasis, geoMon, wat gebruik is vir datavaslegging, onttrekking, prosessering en verslaggewing. Die gemak waarmee data onttrek kon word het analise vergemaklik. Geïnterpoleerde data is gebruik vir grondwateraanvullingsberekeninge en -kwantifisering sowel as ‘n nuwe benadering tot klassifikasie volgens hulpbron gerigte maatreëls. Bestuursklasse gebaseer op GIS-afgeleide data, is gedefinieer.
Basson, F. C. (Frederick Christoffel). "A spatial decision support system for groundwater abstraction impact assessment and licensing." Thesis, Stellenbosch : Stellenbosch University, 2005. http://hdl.handle.net/10019.1/50279.
Full textENGLISH ABSTRACT: Water resources in South Africa are limited and groundwater plays an important role in supporting basic human needs, sustaining ecosystems and enabling industrial and agricultural development. Sound management practices are necessary to ensure sustainable development of water resources. All groundwater usage must be licensed in compliance with the National Water Act of 1998. A Spatial Decision Support System (SDSS) can be used to assist in the groundwater usage licensing process of the Department of Water Affairs and Forestry (DWAF). The main aim of this study was to develop a SDSS, named Groundwater Abstraction & Licence Evaluation Tool (GALET), that could assist in the process of allocating water use licences and determining the local impact of abstraction, based on existing theory and data. The development was done within ArcView 3.2 using the scripting language Avenue. The Sandveld, an arid stretch of land along the west coast of South Africa that is heavily impacted by groundwater abstraction, was the chosen study area. The data collected for this study included existing borehole, recharge, rainfall and geological information. GALET proved to be capable of calculating essential information needed to evaluate groundwater abstraction, which included drawdown in the water table, zone of influence and the possible effects on features such as rivers and wetlands. Targeted potential users regarded GALET as a useful tool in the process of licensing and groundwater abstraction impact assessment and plans are under way to implement GALET or a derivative thereof at the DWAF regional offices.
AFRIKAANSE OPSOMMING: Waterhulpbronne in Suid-Afrika is beperk en grondwater speel 'n belangrike rol in die ondersteuning van basiese menslike behoeftes, volhouding van ekosisteme asook industriële en landbou-ontwikkeling. Betroubare bestuurspraktyke is noodsaaklik om die volhoubare ontwikkeling van waterhulpbronne te verseker. Alle grondwatergebruik moet volgens die Nasionale Waterwet van 1998 gelisensieer word. 'n Ruimtelike Besluitnemings Ondersteuning Stelsel (RBOS) kan as 'n hulpmiddel gebruik word in die lisensiëringsproses van die Departement van Waterwese en Bosbou. Die hoofdoel van hierdie studie was om 'n RBOS, genoem Groundwater Abstraction & Licence Evaluation Tool (GALET), te ontwikkel wat as hulpmiddel gebruik kan word in die allokeringsproses van watergebruiklisensies en die bepaling van die impak van grondwateronttrekking op die omgewing, gebaseer op bestaande teorie en data. Die ontwikkeling is in ArcView 3.2 met die programmeringstaal Avenue gedoen. Die Sandveld, 'n ariede streek aan die weskus van Suid-Afrika wat onderhewig is aan grootskaalse grondwateronttrekking, is gekies as die studie area. Die data wat vir hierdie studie ingesamel is sluit bestaande boorgat, grondwateraanvulling, reënval en geologiese inligting in. GALET was in staat om belangrike inligting aangaande die evaluering van grondwateronttrekking te bereken, o.a. die daling van die grondwatervlak, die impaksone en die moontlike effekte op landvorms soos riviere en vleilande. Die teikengroep potensiële gebruikers het GALET as 'n nuttige hulpmiddel in die proses van lisensiëring en grondwateronttrekking impakbepaling beskou en planne is onderweg om dit of 'n aangepaste program by die streekskantore van die Departement van Waterwese en Bosbou te implementeer.
Gribble, John. "Verlorenvlei vernacular : a structuralist analysis of Sandveld folk architecture." Master's thesis, University of Cape Town, 1990. http://hdl.handle.net/11427/21820.
Full textBaxter, Andrew James. "Late quaternary palaeoenvironments of the Sandveld, Western Cape Province, South Africa." Doctoral thesis, University of Cape Town, 1997. http://hdl.handle.net/11427/13880.
Full textBibliography: leaves 263-292.
This thesis presents new palaeoenvironmental evidence from the semi-arid lowlands of the West Coast Sandveld, which prompts a fresh synthesis as to the nature of late Quaternary environmental changes in the southwestern Cape's fynbos biome. The study is centred on Verlorenvlei, a remote coastal lake and swamp system which is ideally situated to investigate the complex interactions between late Holocene climate change, vegetation change, sea-level fluctuation, lacustrine/estuarine/fluvial sedimentology and human activity in the Sandveld region. In addition, this region of the West Coast has provided Quaternary scientists with a rich archaeological record against which independent lines of palaeoecological evidence can be evaluated. In support of the study, a wide range of palaeoenvironmental techniques has been applied to sediments sampled from the Verlorenvlei area. Organogenic deposits have been radiocarbondated and subjected to pollen analysis and assorted sedimentological and geoarchaeological assessments. Preliminary fossil pollen data from Elands Bay Cave, assembled for the period following the Last Glacial Maximum until approximately the terminal Pleistocene, are suggestive of moister and possibly cooler conditions in the Sandveld at this time. This is in contrast to prevailing evidence from the summer rainfall region of the subcontinent. Particle size analysis and an assessment of the in situ fossil Mollusca from vibracores, derived from the estuarine reaches of Verlorenvlei, reveal substantive evidence for rapid sea-level fluctuations along the West Coast during the mid-Holocene. Further inland, several mid-Holocene higher sea-levels are reflected in the palynology of lacustrine cores derived from Grootdrift and Klaarfontein. Detailed pollen diagrams, presented from Grootdrift, Klaarfontein, Muisbosskerm and Spring Cave, reflect the regional vegetation history during several periods over the last 7 000 years. There is convincing evidence from these data that the first half of the Holocene - commensurate with the Holocene hypsithermal - was associated with reduced moisture availability, and hence arid conditions along the West Coast. By contrast, there is evidence from the latter half of the Holocene that conditions ameliorated in the Sandveld around 3 000 BP and that moisture was, at this time more freely available. Following a hiatus in sedimentation some time after 4 000 BP, marine conditions are no longer visible in Verlorenvlei, having been replaced by fresh water as the dominant hydrological regime. A high resolution palynological investigation of the Grootdrift wetland sediments has contributed to a detailed palaeolimnological reconstruction of the upper Verlorenvlei system since the time of colonial expansion into the area, some 300 years ago. The picture reveals a sequence of rapid ecological changes in the face of progressive human disturbance. Arising from these insights, a number of recommendations for the management of dryland aquatic ecosystems such as Verlorenvlei, are presented. The significance of these late Quaternary palaeoenvironmental changes, in terms of the biogeography of plants and animals and also in terms of human occupation of the region, is examined.
Magidi, James Takawira. "Spatio-temporal dynamics in land use and habit fragmentation in Sandveld, South Africa." Thesis, University of the Western Cape, 2010. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_7886_1297841126.
Full textThis research assessed landuse changes and trends in vegetation cover in the Sandveld, using remote sensing images. Landsat TM satellite images of 1990, 2004 and 2007 were classified using the maximum likelihood classifier into seven landuse classes, namely water, agriculture, fire patches, natural vegetation, wetlands, disturbed veld, and open sands. Change detection using remote sensing algorithms and landscape metrics was performed on these multi-temporal landuse maps using the Land Change Modeller and Patch Analyst respectively. Markov stochastic modelling techniques were used to predict future scenarios in landuse change based on the classified images and their transitional probabilities. MODIS NDVI multi-temporal datasets with a 16day temporal resolution were used to assess seasonal and annual trends in vegetation cover using time series analysis (PCA and time profiling).Results indicated that natural vegetation decreased from 46% to 31% of the total landscape between 1990 and 2007 and these biodiversity losses were attributed to an increasing agriculture footprint. Predicted future scenario based on transitional probabilities revealed a continual loss in natural habitat and increase in the agricultural footprint. Time series analysis results (principal components and temporal profiles) suggested that the landscape has a high degree of overall dynamic change with pronounced inter and intra-annual changes and there was an overall increase in greenness associated with increase in agricultural activity. The study concluded that without future conservation interventions natural habitats would continue to disappear, a condition that will impact heavily on biodiversity and significant waterdependent ecosystems such as wetlands. This has significant implications for the long-term provision of water from ground water reserves and for the overall sustainability of current agricultural practices.
Seward, Paul. "Rethinking groundwater governance in South Africa." University of the Western Cape, 2015. http://hdl.handle.net/11394/4762.
Full textGovernance is essentially the process whereby organisations or networks of organisations exercise their authority. It describes how a body with authority makes or does not make decisions, and how it implements - or does not implement - those decisions. 'Good' groundwater governance can then be defined by how fair the decision-making process is, and how effective the implementation process is. Groundwater governance in South Africa is increasingly being categorized as ineffective. The purpose of this thesis is to explore ways to improve groundwater governance in South Africa. Initial reviews of international studies of groundwater governance did not find any processes that could be directly imported into the South African governance landscape for testing. The global consensus was that there were no blueprints for improving groundwater governance, and that each case should be treated as unique. Therefore the thesis had to change from its initial aim of finding firm rules that could be tested in the South African context, to a revised aim of formulating tentative heuristics, rules, strategies and hypotheses that might be useful for further work in the South African context.An exploratory, inductive-based, loosely structured methodology was therefore employed rather than a more formal, deductive-based testing of hypotheses. In short, the objective of this thesis was concerned with formulating hypotheses rather than testing them.The novel, general, contribution made by this thesis is to synthesize global groundwater governance literature with the specific aim of improving groundwater governance in a specific country. While reviews of global literature do exist, they have thus far only been used to make generic recommendations, and have not been specifically applied to a country. Conversely, while attempts to improve groundwater governance for specific regions and countries do exist, these attempts have largely done so without synthesizing existing global knowledge. Indeed, the emphasis on national, regional and local studies has principally been to understand the factors at work affecting groundwater governance, rather than to improve governance.
Lotz, Tamarin. "A fine-scale classification of land cover in the North-west Sandveld." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/19907.
Full textENGLISH ABSTRACT: A land cover classification showing the landscape structure of a given area is necessary to make appropriate measures for environmental planning. The environmental impacts from insensitive human activities have led to a severe loss of biodiversity in the Cape Floristic Region over time. The natural biodiversity of the North-West Sandveld in particular, has suffered severe loss and a high level of fragmentation. The rapid growth of certain agricultural practices in the Sandveld has led not only to loss of biodiversity, but the secondary effects of excessive water extraction, invasive alien fauna and flora species and harmful run-off from toxic herbicides and pesticides. To plan effectively, an accurate map of a suitable resolution needs to be created to effectively display spatial information. The primary aim was to demonstrate that a semi-automated fine-scale, land cover classification using object-oriented image analysis is possible for a large local area to examine the environmental issues pertaining to the Sandveld. Towards this aim, a model to classify land cover of the study area was developed and its effectiveness analysed and interpreted. To meet these requirements, pre-processed SPOT 5 satellite imagery was used to digitize certain classes and to generate frame, border and Normalized Differentiation Vegetation Index (NDVI) layers for the object-oriented classification in eCognition. The accuracy of the results was determined using the Kappa coefficient which gave an accuracy level of 70%. The environmental impacts were determined after area calculations were done on each class. The results showed that the natural areas still made up the greatest percentage of the Sandveld but that it is highly fragmented, especially along the coast and many areas, although left in a natural state, were being overgrazed by livestock. The temporary irrigated, temporary non-irrigated strip agriculture and permanent agriculture classes made up the most of the remainder of the areas and had the largest impact on the Sandveld‟s biodiversity. For the biodiversity of the Sandveld to remain intact, a balance between enforcing the law and encouraging inhabitants of the Sandveld to encourage more environmentally balanced practices needs to be created. Stewardship programmes and education will greatly enhance the effectiveness of any conservation efforts.
AFRIKAANSE OPSOMMING:'n Landbedekkingsklassifikasie wat die landskapstruktuur van 'n gegewe gebied aandui, is noodsaaklik om gepaste omgewingsbeplanning toe te pas. Die effek van intensiewe menslike aktiwiteite op die omgewing oor 'n lang tydperk, het gelei tot die verlies van biodiversiteit in die Kaapse Blommestreek. Die natuurlike biodiversiteit van veral die Noordwes Sandveld is deur ernstige verliese, asook 'n vlak van fragmentasie beïnvloed. Behalwe dat die vinnige toename van sekere landboupraktyke in die Sandveld gelei het tot die verlies van biodiversiteit. Sekondêre faktore soos die oormatige water-ontrekking, indringerspesies van fauna en flora en die afloop van skadelike onkruiddoder en pes-weerende middels in rivierstelsels is ook verantwoordelik vir verlies van biodiversiteit. Om effektiewe beplanning moontlik te maak, is die skepping van 'n akkurate kaart met 'n geskikte resolusie wat die ruimtelike inligting effektief voorstel, nodig. Die hoof doel van hierdie studie was om 'n semi-geoutomatiseerde fynskaal landbedekkingsklassifikasie in 'n groot plaaslike gebied wat die omgewingskwessies rakende die Sandveld te bestudeer en demonstreer, deur gebruik te maak van objek-gerigte beeldanalise. Die effektiwiteit van 'n model wat ontwikkel is om die studiegebied te klassifiseer, was ontleed en geïnterpreteer. Om hierdie vereistes te bevredig, is voorverwerkte SPOT 5 satellietbeelde gebruik om sekere klasse te versyfer, asook om raam-, grens- en genormaliseerde plantegroei differensiasie indekslae vir beeldgerigte klassifikasie in eCognition te skep. Die akkuraatheid van die resultate was bepaal deur die Kappa-koëffisiënt wat 'n akkuraatheidsvlak van 70% gelewer het. Die omgewingsimpakte was bepaal deur opperlakteberekeninge vir elke klas te maak. Die resultate dui aan dat natuurlike gebiede steeds die grootste persentasie van die Sandveld beslaan, maar dat dit hoogs gefragmenteerd is, veral langs die kuslyn en dat baie gebiede, wat wel steeds in 'n natuurlike toestand is, oorbewei word deur vee. Die tydelike spilpuntbesproeide landbougebiede, tydelike nie-besproeide strooklandbou en permanente landbouklasse, beslaan die meeste van die oorblywende landbedekking van die Sandveld. Hierdie klasse het ook die grootste impak op die studiegebied se biodiversiteit. Om die biodiversiteit van die Sandveld te behou, moet 'n balans tussen die afdwing van wetgewing en die aanmoedig van meer omgewingsgebalanseerde praktyke in die Sandveld gevind word. Rentmeesterskap programme en opvoeding sal die effektiwiteit van enige bewaringspogings aansienlik verbeter.
Morel, Anneke. "Soil erosion and land degradation in the Swartland and Sandveld, Western Cape province, South Africa : a re-evaluation." Master's thesis, University of Cape Town, 1998. http://hdl.handle.net/11427/9681.
Full textThe Swartland and Sandveld are situated in the Western Cape province (political limits) in what is also known as the southwestern Cape region . This area falls within the winter rainfall (or Mediterranean) region of South Africa and has a sharply defined seasonal climate. Vegetation in the region is unique. The soils in the Swartland and Sandveld vary greatly over short distances, making this area vulnerable to varying erosion rates. Land use in the Swartland and Sandveld is mainly agricultural. Soil erosion is driven by the force of wind and or water. Sheet flow is what is considered as unconstrained water erosion together with rainsplash, while piping, rill and gully erosion are all forms of constrained water erosion. Erosivity and erodibility are both important factors in determining the vulnerability of an area to soil erosion. By their understanding of the factors involved in the course of degradation, researchers can determine the most effective conservation policies for a region. Of course, the influence of humans on the land should never be under-estimated and should be seen as a potent determinant of the erosion potential. The use of remote sensing and G.I.S. are essential in the development of erosion maps, and to assess possible changes that over time in the erosional situation in a region. As an analytical and data storage tool, these techniques are very useful, even essential. The total decrease in gully erosion from 1938 to 1989 in the Swartland amounts to 85% compared to the gully erosion in 1938. In the Sandveld wind erosion decreased with 17% from 1928 to 1986. Soil conservation in South Africa has come a long since the 1930's and much of the experience and the lessons gained in the last six of seven decades have been incorporated in the countries new conservation Act. It has been concluded that the slowing down of the denudation process in the region, coinciding with effective new conservation strategies, are the principal reasons for the results obtained in this research project. It must be noted however that without the intervention of the conservation efforts in the Swartland and Sandveld, the remarkable improvement in the water erosion situation (85%) would not have been obtained. The overall improvement (17%) in the Sandveld lags that in the Swartland and even shows a slight deterioration of the wind erosion situation found in 1974. There are therefore grounds for caution, since wind erosion is still very much relevant and not fully contained in the Sandveld. Further research into this situation would indeed be beneficial.
Xaza, Abongile. "Investigating hydrogeochemical processes of groundwater, Heuningnes Catchment, South Africa." University of the Western Cape, 2020. http://hdl.handle.net/11394/7961.
Full textThis study was conducted to investigate hydrogeochemical processes controlling the evolution of groundwater chemistry and their influence on water quality in the Heuningnes Catchment. The role or influence of hydrogeochemical processes in groundwater quality in aquifer systems remains poorly understood. One of the ways of improving such understanding is to employ different techniques to explore key processes that govern groundwater quality in aquifer systems. Therefore, the present study investigated hydrogeochemical processes of groundwater resources and identified key processes that explained its quality from a spatiotemporal perspective. The quantitative approach that provides the ability to assess relationships between variables both spatially and temporally was applied. Groundwater sampling was done on four occasions during July 2017, October 2017, March 2018, and July 2018. Identification of hydrogeochemical processes controlling the evolution of groundwater chemistry and quality was done using various complementary tools. These tools included classification of the main water types, evaluation of water-rock interaction by means of stoichiometry analysis and bivariate correlation plots, inverse geochemical modelling, and statistical analysis (hierarchical cluster analysis and factor analysis). Physical parameters were measured in situ, while water samples were collected from boreholes, piezometers, springs, and artesian boreholes for laboratory analysis for major ions analysis. Descriptive and bivariate statistical methods were used to summarise and evaluate the strength of the relationship between variables, while multivariate statistical methods were applied to group similar samples based on their chemical compositions. Tri linear Piper diagrams were generated to characterize water type based on double normalizing the proportions of cations and anions, while correlation and stoichiometric analysis were applied to identify hydrogeochemical processes influencing groundwater chemistry. The results generated from the trilinear Piper diagrams confirmed the dominance of sodium and chloride ions in waters of the Heuningnes Catchment. Groundwater of a Na/Cl type is typical for a coastal aquifer characterised by saline, deep ancient groundwater. The lower parts of the Catchment were characterised by saline groundwater. The results indicated that shallow groundwater samples within the study area were more mineralised as compared to deep groundwater with EC values ranging between 20.8 and 2990 mS/m, with waters within the Table Mountain Group region (TMG), recording the lowest values. Deep groundwater for boreholes and artesian boreholes located upstream in the Catchment was fresh and yielded some of the lowest EC values recorded with an EC value below 50 mS/m. Generally, EC values increased from the upper TMG region of the Catchment towards the Bokkeveld shale region downstream and were highest during the dry season of 2018. The results indicated strong geological influences on water chemistry. Bivariate correlation and stoichiometric analysis identified cation exchange, adsorption, evaporation, weathering of carbonates, sulphates and silicate minerals as processes influencing the chemistry of groundwater in the Heuningnes Catchment. The Saturation Index (SI) results showed a change of calcite, dolomite, aragonite, gypsum, anhydrite, halite, melantinterite, siderite and sylvite from being undersaturated to oversaturated at some areas for the different seasons along the flow path. The mass-balance modelling results indicated that ion exchange and reverse ion exchange processes were more dominant at low elevations along the same flow path during the dry periods. However, at high elevations along the flow path, silicate weathering was the dominant process taking place. The findings of this study demonstrated the influence of hydrogeochemical processes in changing the water chemistry along the flow paths. In conclusion, the study showed the value of utilising various assessment tools as complementary techniques to improve the understanding about hydrogeochemical processes, and its influence on evolution of groundwater chemistry and quality. Based on the findings of the study the following recommendations were made for future studies; the sample points or sample boreholes in the study Catchment should be increased; and to have more sampling trips to enable better comparison between the possible processes
Adonis, Shaheeda. "The hydrochemical characteristics of groundwater in the Incomati Estuary." Thesis, University of the Western Cape, 2007. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_6324_1220530108.
Full textThe focus of this work was to monitor and evaluate the hydrochemical characteristics of the groundwater in the Incomati Estuary for a period of one year. The aims of this work were to evaluate the groundwater chemistry data for any spatial and temporal variations and to evaluate the suitability of the groundwater for drinking and irrigation purposes.
Books on the topic "Groundwater – South Africa – Sandveld"
Later Stone Age settlement patterns in the Sandveld of the south-western Cape Province, South Africa. B.A.R., 1987.
International Association of Hydrogeologists. Congress. Groundwater, past achievements and future challenges: Proceedings of the XXX IAH Congress on Groundwater Past Achievements and Future Challenges, Cape Town, South Africa, 26 November-1 December 2000. A.A. Balkema, 2000.
Salama, RB, ed. Physical and Chemical Techniques for Discharge Studies - Part 1. CSIRO Publishing, 1996. http://dx.doi.org/10.1071/9780643105331.
Full textBook chapters on the topic "Groundwater – South Africa – Sandveld"
Knüppe, Kathrin, and Claudia Pahl-Wostl. "Water Governance and Management Systems and the Role of Ecosystem Services: Case Study Insights—Groundwater Management in the Sandveld Region, South Africa." In The Global Water System in the Anthropocene. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07548-8_18.
Full textWinde, Frank. "Karst, Uranium, Gold and Water – Lessons from South Africa for Reconciling Mining Activities and Sustainable Water Use in Semi-arid Karst Areas: A Case Study." In Sustaining Groundwater Resources. Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-90-481-3426-7_3.
Full textSengani, F., and T. Zvarivadza. "Assessment of Groundwater Quality: Case Study of Tshivhasa, Limpopo Province, South Africa." In Proceedings of the 18th Symposium on Environmental Issues and Waste Management in Energy and Mineral Production. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99903-6_18.
Full textHay, Rowena, Anni Snyman, and Christopher J. H. Hartnady. "Transformative Art Applied to the Social Hydrogeology of the Cape Flats, South Africa." In Advances in Geoethics and Groundwater Management : Theory and Practice for a Sustainable Development. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-59320-9_82.
Full textCoetzee, Henk, Nicolene van Wyk, Peter Wade, Patrich Holmstrom, Håkan Tarras-Wahlberg, and Shane Chaplin. "Migration of uranium in groundwater in three naturally occurring anomalous areas in South Africa." In Uranium, Mining and Hydrogeology. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-87746-2_82.
Full textvan Wyk, Nicolene, and Henk Coetzee. "The distribution of uranium in groundwater in the Bushmanland and Namaqualand areas, Northern Cape Province, South Africa." In Uranium, Mining and Hydrogeology. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-87746-2_80.
Full textLaVanchy, G. Thomas, James K. Adamson, and Michael W. Kerwin. "Integrating groundwater for water security in Cape Town, South Africa." In Global Groundwater. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-818172-0.00032-3.
Full textAdelana, S., and N. Jovanovic. "Contamination and protection of the Cape Flats Aquifer, South Africa." In Groundwater Pollution in Africa. Taylor & Francis, 2006. http://dx.doi.org/10.1201/9780203963548.ch23.
Full textXu, Y., E. Braune, and D. Cox. "A South African perspective on the protection of groundwater sources." In Groundwater Pollution in Africa. Taylor & Francis, 2006. http://dx.doi.org/10.1201/9780203963548.ch29.
Full text"Contamination and protection in the Cape Flats Aquifer, South Africa." In Groundwater Pollution in Africa. CRC Press, 2006. http://dx.doi.org/10.1201/9780203963548-35.
Full textConference papers on the topic "Groundwater – South Africa – Sandveld"
"Hydrochemical Characteristics of Open-Pit Groundwater from a Closed Metalliferous Mine in O'kiep, Namaqualand Region, South Africa." In Nov. 27-28, 2017 South Africa. EARES, 2017. http://dx.doi.org/10.17758/eares.eap1117022.
Full textWebb, Susan J., David Ngobeni, Michael Jones, et al. "Hydrogeophysical investigation for groundwater at the Dayspring Children's Village, South Africa." In SEG Technical Program Expanded Abstracts 2010. Society of Exploration Geophysicists, 2010. http://dx.doi.org/10.1190/1.3513647.
Full textMAKUNGO, RACHEL, and JOHN O. ODIYO. "GROUNDWATER QUALITY AND ITS DISTRIBUTION IN SILOAM VILLAGE, LIMPOPO PROVINCE, SOUTH AFRICA." In WATER POLLUTION 2018. WIT Press, 2018. http://dx.doi.org/10.2495/wp180051.
Full textHarkness, Jennifer S., Kelley Swana, William K. Eymold, et al. "GEOGENIC METHANE AND FLUORIDE IN GROUNDWATER OF THE KAROO BASIN, SOUTH AFRICA." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-323985.
Full textSakala, Emmanuel, Abera Tessema, and Peter K. Nyabeze. "Regional Interpretation of Aeromagnetic Data for Groundwater Exploration in Capricorn District, Limpopo, South Africa." In Power and Energy Systems. ACTAPRESS, 2012. http://dx.doi.org/10.2316/p.2012.762-036.
Full textSakala, Emmanuel, Francois D. Fourie, Modreck Gomo, and Henk Coetzee. "Specific Groundwater Vulnerability Mapping: Case Study of Acid Mine Drainage in the Witbank Coalfield, South Africa." In Environment and Water Resource Management / 837: Health Informatics / 838: Modelling and Simulation / 839: Power and Energy Systems. ACTAPRESS, 2016. http://dx.doi.org/10.2316/p.2016.836-010.
Full textOke, Saheed A., Rebecca Alowo, and Muthoni Masinde. "Using Internet of Things for sustainable groundwater drought management in the Modder River catchment of South Africa." In 2019 Open Innovations (OI). IEEE, 2019. http://dx.doi.org/10.1109/oi.2019.8908246.
Full text"Geochemical Modelling Data of Groundwater in the O’Kiep, Namaqualand Region, South Africa – 2013 to 2019: A Case of Evidenced Contamination by Historical Mining Activity." In Nov. 16-17, 2020 Johannesburg (SA). Eminent Association of Pioneers, 2020. http://dx.doi.org/10.17758/eares10.eap1120218.
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