University of Twente Student Theses


Developing water quality modelling scheme in ILWIS Open for the Dinkel River in support of climate change and adaptation studies

Kabo-Bah, Amos Tiereyangn (2010) Developing water quality modelling scheme in ILWIS Open for the Dinkel River in support of climate change and adaptation studies.

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Abstract:Freshwater of adequate quantity and quality are vital for sustainable socio-economic development in every nation. The rising population and industrial growth coupled with climate change, call for more cost effective monitoring and forecasting techniques. Geoinformation and remote sensing technologies allow the retrieval and organization of complex data requirement for accurate hydrologic and water quality assessment. The ability to integrate geospatial information and earth observation data with numerical river flow and transport modeling in an open source GIS environment provides a key step to provide a level platform for all professionals to undertake water quality monitoring and management. The fate of pollutants in rivers is controlled by physical transport and biogeochemical interactions in the system. The understanding of these interactions is a critical step in predicting the fate of substances in rivers and water bodies. This can help in undertaking more effective steps towards monitoring and management of water resources. The study used the USGS open code transient storage solute transport model (OTIS) to quantify the hydraulic parameters that influence temporary storage in rivers. Transient storage detains transport of pollutants in small eddies and stagnant regions of water that are stationary relative to the movement in the main flow section. The model was successfully calibrated and validated for the Dinkel River, using experimental tracer experiments. The OTIS model component was further integrated with FEQ model (covered in another thesis) using a graphic user interface (GUI) for the generation of unsteady flow conditions in the river system. This integrated package would be implemented as a plug-in in ILWIS Open under the 52° North Initiative for Geospatial Open Source Software to “Develop a Graphic User Interface (GUI) for water quality modelling of the 52oNorth Dinkel River”. Professional and scientific interest for using this new Open Source based hydrological evaluation tool are already well noted with the Regge and Dinkel water board and especially their cooperation partners in Eastern Europe e.g. Slovakia. Keywords: Water quality, climate change, open source GIS, ILWIS Open, OTIS, FEQ
Item Type:Essay (Master)
Faculty:ITC: Faculty of Geo-information Science and Earth Observation
Programme:Geoinformation Science and Earth Observation MSc (75014)
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