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Basisdocumentatie probleemstoffen KRW : basisdocument stap 1 - diagnose
De basisdocumenten bestaan uit 3 Excelbestanden: stap 1-diagnose ; stap 2- bronnenanalyse ; stap 3-maatregelenanalyse. Het rapport beschrijft de gevolgde methodiek en geeft in tekstboxen generieke achtergrondinformatie bij onderwerpen zoals alomtegenwoordige stoffen, toetsingssystematiek en gewasbeschermingsmiddelen. Deze documentatie is opgesteld om waterbeheerders te ondersteunen in het ontwerpen van aangepaste monitoring- en maatregelenprogramma's voor probleemstoffen en nieuwe prioritaire stoffen. Het resultaat omvat informatie voor alle KRW-probleemstoffen, die waterbeheerders kunnen gebruiken als die betreffende stof overschrijdt in een bepaald waterlichaam. In drie stappen -de diagnose, de bronnenanalyse en de maatregelenanalyse- wordt op een gestandaardiseerde, beknopte en overzichtelijke wijze weergegeven hoe het probleem in elkaar zit (diagnose), wat de oorzaak is (bronnenanalyse) en welke maatregelen genomen zouden kunnen worden en door wie (maatregelenanalyse).
Scour holes in river deltas
Scour holes threaten dike and riverbank instability and may result in structural damage. It is necessary to predict scour development in order to assess and mitigate the risks. This study improved the understanding of scour-hole development in heterogeneous subsoil lithology by combining field data analysis, numerical modelling and scale-model experiments.
Real-time dam stability monitoring
Multi-purpose water reservoirs and dams play a major role in water supplies, irrigation and flood risk management. DAMSAFE is a pilot project to demonstrate a number of innovative technologies that contribute to enhancing dam safety and water reservoir management.
Asphalt in the Delta Flume
Deltares carried out full-scale tests in the Delta Flume to measure the performance of asphalt on a dike during heavy wave attack. These tests were carried out with 50-year-old asphalt from the Lauwersmeer dike. The test results give unique information about performance during heavy wave attack in combination with a defined water level in the dike body.
XBeachX - new anniversary release of the Deltares coastal impact software
XBeach, the open-source nearshore morphodynamic software developed by IHE Delft, Deltares and TU Delft was presented for the first time ten years ago. In JIP, EU and market projects, we have developed the new XBeachX release of the software, which includes many new features based on ongoing research results.
An improved hydrological cysle with high-resolution models
This study looked at the potential benefits of a global climate and hydrological model with very high resolution for representing the hydrological cycle in the Rhine and Mississippi basins. We conclude that raising the resolution of a Global Climate Model is the most straightforward way to obtain better precipitation, and therefore discharge, results, although this does depend on the climatic drivers of the basin.
Serving the community : coastal and fluvial flood forecasting in eTheKwini (Kwazulu Nathal, South Africa)
The eTheKwini coastal municipality in South Africa has been adversely affected by both coastal and fluvial flooding. A Delft-FEWS based operational flood forecasting and warning system was developed to provide decision-makers with timely information about imminent events. The system went fully operational at eTheKwini municipality in mid-2017.
Emergency advice for a temporary dam near Grave
To assist the decision-making procedure relating to a temporary dam at the location of the damaged weir near Grave, the Emergency Advice procedure was initiated at Deltares. During the course of a weekend, simulations were performed, and it was concluded that the impact on extreme water levels was relatively limited.
Improving cost-benefit analysis for flood risk management to account for the interests of the poor
The approach to cost-benefit analysis should be improved to better account for socio-economic vulnerability, including poverty, and to comply with the principles of social welfare. Deltares is developing, and experimenting with, new CBA methods, identifying practical limitations and making recommendations to change the method for future flood risk assessments.
EU Floods Directive in Denmark : screening flood risks on the 8000-km-long Danish coast
For the purposes of implementing the EU Floods Directive, the Danish Coastal Authority wishes to define areas where the flood risk is high. A risk-index-based method implemented in a Risk Screening Toolbox was developed to compute the risk level on the 8000-km-long Danish coast.