Author(s): Adri Verwey
Linked Author(s): Adri Verwey
Keywords: No Keywords
Abstract: In Europe, significant budgets are made available to reduce the worst effects of floods. As a result, flood simulation and forecasting techniques have been developed at a high professional level. One of the worst recent floods occurred in the Czech Republic and in Germany in 2002. The events had return periods of once in 500 years in Prague and once in 200 years in Dresden, respectively. The resulting flood damage has been estimated at more than€2. 3 billion in the Czech Republic and€9. 2 billion in Germany. More than 130 river dike breaches occurred in the German federal state of Saxony alone. In The Netherlands, the 1953 coastal floods had enormous impacts in terms of loss of life and subsequently in terms of flood protection measures taken. More recently, the river dikes were threatened during the floods in 1993 and 1995. In this last year, 250, 000 people had to be evacuated from the Tieler and Culemburger Waard. The economic damage could have been€18 billion if the dike would not have been saved during emergency operations. In particular these flood threats in The Netherlands have led to the following important developments: ○ Systematic analysis of the risk of flooding of dike ring areas; ○ Delft flood forecasting platform–Delft-FEWS; ○ Delft 2D/3D generic modelling system–Delft-3D; ○ Delft 0D/1D/2D generic modelling system–SOBEK; ○ integrated approach to modelling. The Netherlands has built up a long tradition in the numerical modelling of floods, as demonstrated by the early publication by Dronkers (1969). This paper will discuss the latest trends in numerical flood modelling, in particular the integrated 0d/1D/2D approach.
Year: 2007