Optimization of 2D flood models by semi-automated incorporation of flood diverting landscape elements
Vanderkimpen, P.; Peeters, P.; Van der Biest, K. (2008). Optimization of 2D flood models by semi-automated incorporation of flood diverting landscape elements, in: Samuels, P. et al. (Ed.) (2009). Proceedings of the European Conference on Flood Risk Management Research into Practice (FLOODRISK 2008), Oxford, UK, 30 September - 2 October 2008: Flood Risk Management: Research and Practice. pp. 291-297 In: Samuels, P.; Huntington, S.; Harrop, J. (Ed.) (2009). Proceedings of the European Conference on Flood Risk Management Research into Practice (FLOODRISK 2008), Oxford, UK, 30 September - 2 October 2008: Flood Risk Management: Research and Practice. Taylor & Francis: London. ISBN 978-0-415-48507-4. XXI, 309 + cd-rom pp., more |
| Available in | Authors | | Document type: Conference paper
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| Keywords | Hazards > Weather hazards > Floods
Information systems > GIS
Modelling
Models > Scale models > Hydraulic models
Topographic features > Landforms > Flood plains
Belgium, Belgian Coast [Marine Regions]
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| Abstract | A simple GIS procedure was used for restoring narrow linear flood diverting landscape elements in rectangular grid digital elevation models. Subsequently, four different DEM’s (fine and coarse grid, with and without linear elements) were incorporated in 2D flood models. Finally, the various flood models were used to compute flood risk in the eastern part of the Belgian coastal plain. The results obtained with fine and coarse grids were quite different, but when linear elements were restored in both grids, they agreed remarkably well. The application of this GIS procedure allows model run times to be reduced by an order of magnitude, while still preserving flood risk accuracy. |
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