Modelling of nonpoint source pollution in the Kuils River catchment, Western Cape - South Africa

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dc.contributor.advisorThomas, Abraham
dc.contributor.authorAyuk, James Ayuk
dc.date.accessioned2021-08-19T09:58:29Z
dc.date.accessioned2024-11-06T10:03:53Z
dc.date.available2021-08-19T09:58:29Z
dc.date.available2024-11-06T10:03:53Z
dc.date.issued2008
dc.description>Magister Scientiae - MScen_US
dc.description.abstractThe Kuils River Catchment is an urban river catchment that forms part of the larger Kuils-Eerste River system draining the eastern half of the Cape Metropolitan Authority area and Stellenbosch Municipality. Rapid urbanisation has resulted in the encroachment of residential and industrial areas into the river system through channelization and sewage disposal. This research project intends to assess the quality of surface runoff in the Kuils River catchment and determining non-point source pollutant loading rates in the catchment using GIS-based modelling. The study results show how modelled potential sources of surface runoff and NPS pollutants using desktop GIS analysis tools in a sequential process that involved different levels of software applications could explain the characteristics of the catchment. With the help of the Expected Mean Concentration (EMC) values associated with surface runoff from land use/covers, NPS pollutant loads were assessed downstream towards the Kuils River Catchment outlet using the Nonpoint Source Pollution and Erosion Comparison Tool (N-SPECT) based in ArcGIS. The outputs from this model consist of predicted annual pollutant loading (mg/mvyear) for each Kuils-Eerste River that occurs in the catchment. The results have shown clearly the spatial distribution of sources of particular pollutants in the catchment. Further or advanced processing knowhow with this model might provide far reaching insights into the problem and it is however recommended that these results produced using N-SPECT be compared to those of other hydrologic models using the same inputs.en_US
dc.identifier.urihttps://hdl.handle.net/10566/17636
dc.language.isoenen_US
dc.publisherUniversity of the Western Capeen_US
dc.rights.holderUniversity of the Western Capeen_US
dc.subjectArcView GIS )en_US
dc.subjectDigital Elevation Modelling (DEM)en_US
dc.subjectEvent Mean Concentration (EMC)en_US
dc.subjectExpected Mean Concentrations (EMC)en_US
dc.subjectGeographic Information Systems (GIS)en_US
dc.subjectGIS NPS Modellingen_US
dc.subjectKuils River Catchmenten_US
dc.subjectLand Use/Cover Mappingen_US
dc.subjectNonpoint Source Pollution (NPS)en_US
dc.subjectNRCS Curve Number (CN) Methoden_US
dc.subjectN-SPECT Modelen_US
dc.subjectPollutant Loadingen_US
dc.subjectRunoff Estimationen_US
dc.subjectUrban Catchmenten_US
dc.titleModelling of nonpoint source pollution in the Kuils River catchment, Western Cape - South Africaen_US

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