Global ETD Search
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Showing 1 to 9 of 9 for “"Vaal River"”.
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Nutrient loading in the Vaal River over the past two decades
… examines the dynamics of nutrient loading in the Vaal River. The objectives are to explore nutrient loading in the Vaal River over the past two decades and to compare the differences between the two decades. Water quality data were obtained from the Department of Water and Sanitation (DWS) Water …
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Analysis of temporal and spatial changes in major dissolved salts in the Vaal River system over a 40 year period
… and variation in salinity composition of the Vaal River and its catchment area was investigated between 1975-2015. Long-term data sets gathered from a 40-year span collected across nine monitoring station in the study catchment area was analysed. The statistical tool applied for the data …
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Sewage, salt, and sediments: water-quality assessment of the lower Vaal-Orange River system
ENGLISH ABSTRACT: Water users in the lower Vaal-Orange River system are subjected to chemicals and pathogens from sources over which they have little control. These sources include raw sewage from dysfunctional wastewater-treatment works, saline irrigation return flows and upstream discharges from …
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Quantifying land-based sources of plastic pollution in South Africa
… province lies within the catchment of the Orange-Vaal River system, which flows west across the country to eventually drain into the Atlantic Ocean. In Chapter 3 I present the results of two extensive field surveys to assess the amounts of plastic debris transported by the Orange-Vaal River system …
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Analysis of the quantity and cost of modelled nitrate deposition to the Vaal River from power station emissions with insights for cost-benefit analysis and policy recommendations
… the costs of power station emissions to the Vaal River; to consider how European costs differ from South African costs; to consider the impact of the NEMAQA of 2004 and finally, to evaluate the likelihood of these costs being incurred. The years that were selected for this study were chosen …
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Biodiversity and systematics of parasitic Crustacea infesting southern African freshwater fishes
… crustacean species present in the different river systems as well as new hosts and locality records, in addition to the possible description of new species. More so, the integration of improved morphological techniques and molecular analyses would provide novel information on the …
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Investigation of class 3 and class 4 (Doornspruit) homesteads in the North West Province, South Africa
… of Nguni-speakers took place across the Vaal River from present-day KwaZulu-Natal during the Late Iron Age. These are broadly relevant to this research and specifically the most recent movement of Mzilikazi’s Khumalo. It is around this issue of Nguni identity and their homesteads that …
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LHDA 1000 impact assessment : impact assessment report
… involves the damming of the Malibamatso River at Katse in the Maluti Mountains (Figure1), a transfer tunnel through the mountains, a hydroelectric power station at 'Muela in Lesotho, and a delivery tunnel under the Caledon River to the Ash River (a tributary of the Vaal River which feeds …
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Characterisation of air masses passing over the Vredefort Dome world heritage site
… as well as water quality associated with the Vaal river); and aesthetic (e.g. providing unique scenery with associated ecotourism opportunities) significance in South Africa. Air quality in the Vredefort Dome can potentially be affected by the nearby declared air pollution priority areas, i.e. …