Catchment parameter analysis in flood hydrology using GIS applications

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dc.contributor.authorGericke, O. J.en_ZA
dc.contributor.authorDu Plessis, J. A.en_ZA
dc.date.accessioned2013-07-03T08:19:40Z
dc.date.available2013-07-03T08:19:40Z
dc.date.issued2012-10
dc.descriptionCITATION: Gericke, O. J. & Du Plessis, J. A. 2012. Catchment parameter analysis in flood hydrology using GIS applications. Journal of the South African Institution of Civil Engineering, 54(2):15-26.
dc.descriptionThe original publication is available at http://www.scielo.org.za
dc.description.abstractENGLISH ABSTRACT: The use of Geographical Information Systems (GIS) has permeated almost every field in the engineering, natural and social sciences, offering accurate, efficient, reproducible methods for collecting, viewing and analysing spatial data. GIS do not inherently have all the hydrological simulation capabilities that complex hydrological models do, but are used to determine many of the catchment parameters that hydrological models or design flood estimation methods require. The purpose of this study was to perform catchment parameter analysis using GIS applications available in the ArcGISTM environment. The paper will focus on the deployment of special GIS spatial modelling tools versus conventional manual methods used in conjunction with standard GIS tools to estimate typical catchment parameters, e.g. area, average catchment and watercourse slopes, main watercourse lengths and the catchment centroid. The manual catchment parameter estimation methods with GIS-based input parameters demonstrated an acceptable degree of association with the special GIS spatial modelling tools, but proved to be sensitive to biased user-input at different scale resolutions. GIS applications in an ArcGISTM environment for the purpose of catchment parameter analyses are recommended to be used as the standard procedure in any proposed hydrological assessment.en_ZA
dc.description.urihttp://www.scielo.org.za/scielo.php?script=sci_abstract&pid=S1021-20192012000200002&lng=en&nrm=iso&tlng=en
dc.description.versionPublisher's version
dc.format.extent12 pagesen_ZA
dc.identifier.citationGericke, O. J. & Du Plessis, J. A. 2012. Catchment parameter analysis in flood hydrology using GIS applications. Journal of the South African Institution of Civil Engineering, 54(2):15-26.
dc.identifier.issn2309-8775 (online)
dc.identifier.issn1021-2019 (print)
dc.identifier.urihttp://hdl.handle.net/10019.1/82519
dc.language.isoen_ZAen_ZA
dc.publisherSouth African Institution of Civil Engineeringen_ZA
dc.rights.holderAuthors retain copyrighten_ZA
dc.subjectWatershedsen_ZA
dc.subjectGeographic information systemsen_ZA
dc.subjectFlood forecastingen_ZA
dc.subjectHydrologic modelsen_ZA
dc.titleCatchment parameter analysis in flood hydrology using GIS applicationsen_ZA
dc.typeArticleen_ZA
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