The assessment of flood mitigation measures applied in Cartagena de Indias: A case study approach about investigating types of flood mitigation measures in Cartagena de Indias

Urban areas of coastal cities are increasingly susceptible to the consequences of climate change. In particular, the threat of increasing floods due to sea level rise and heavier rainfall is growing. Cartagena de Indias in Colombia is such a coastal city, where flooding is a significant issue, with floods becoming more frequent in recent decades...

Building Resilience: Analyzing Beira’s Drainage Network and Flood Management: The impact of failure mechanisms on flooding in informal settlements

This research analyses and evaluates the performance of the drainage system in Beira, Mozambique. It considers its formation, maintenance, failure modes and connections, to recommend improvements on its performance. The research identifies six primary failure modes - vegetation overgrowth, human interference, waste accumulation, sedimentation,...

Reducing hydraulic loads on river dikes by construction of longitudinal mounds of local soil

For the past 2000 years river training works have been performed on the Dutch rivers. These training works have shaped the river system of today. Another result of the river training works, especially over the last two centuries, is a decrease in biodiversity. To protect the biodiversity some floodplains in the Netherlands have been classified...

The recirculation near Maasvlakte 2 in the Rhine ROFI: Assessing the influence of a manmade headland and baroclinic processes

In times of rapid urbanization, engineering interventions in coastal systems have become more common. It is important to understand the interplay of these engineered solutions with their natural environment to minimize hazardous side effects to our ecology, economy and coastal safety. In a numerical study by Rijnsburger (2021), a flow...

The application of a continuous nourishment on wave and tide-dominated systems

The Sandwindmill system could decarbonize the Dutch coastal protection whilst harmonizing with the building with nature approach. The system consists of a pipeline connecting an offshore borrow location to a nearshore area, where the mined sediment is discharged. The equipment is powered by wind turbines. As long as the wind blows sufficiently,...

Assessment of changes in flood risk in South Holland due to sea level rise: How can the dunes of dijkring 14 cope with sea level rise?

Economic risk due to a potential flood event is determined by combining the estimated damages and the probability of failure for many scenarios. In recent research of the IPCC (Intergovernmental Panel on Climate Change) it was stated that the sea level will rise more than expected due to climate change . This could influence the flood risk in...

Improving flood fatality risk assessment for river flooding in the Netherlands: Implications of alternative functions and model resolution variations on mortality and fatalities in the Bommelerwaard

The number of fatalities due to a potential flood event is traditionally determined utilizing 'mortality functions’. Data of recent large-scale flooding in the Netherlands are not available since the Netherlands was successful in flood prevention. Therefore, only data from the last coastal flood event in 1953 with 1795 direct fatalities are...

On the use of D-Flow FM & MIKE FLOOD models for the analysis of urban fluvial and pluvial inundation: A case study of Colombo Metropolitan region in Sri Lanka

In recent years, urban inundation modelling has been stimulated by technological advancements and an increase in data availability and quality. Diminution of modelling restrictions allowed for detailed methodologies, yet escalated the number of required parameters, leading to higher complexity and predictions’ uncertainty issues. In the present...

The impact of the Rhine ROFI on the alongshore variability in cross-shore sediment transport of the Holland coast

The Rhine ROFI ( region of freshwater influence) is a dynamic area where various processes and timescales come together. Research has shown that stratification caused by the freshwater outflow of the Rhine alters the tidal currents in front of the Dutch coast. In the case of the Netherlands the tide behaves like a kelvin wave, which causes...

The development of a method to predict ship-bank interaction in real-time

Due to increasing marine traffic intensity on inland waterways the interaction between ships and banks is becoming more of a problem. Bank effects make ship manoeuvring more difficult and rivers need to be protected against ship-induced currents and waves. This thesis contributes to the development of a new method that simulates these ship-bank...

Tidal Flow Separation at the Sand Motor

This study investigates the existence and character of tidal flow separation at the Sand Motor, a mega-scale sand nourishment at the Delfland coast. Tidal flow contracts at the tip of the Sand Motor, downstream the tip the flow diverges and flow separation could occur. In case of flow separation the diverging streamlines cannot follow the...

Implementation of wave effects in the unstructured Delft3D suite

Recently an unstructured version of Delft3D, named D-Flow FM, has been developed at Deltares. This tool shows high potentials for coastal modelling due to the flexibility in domain resolution and unstructured grids. This MSc thesis focussed on implementing wave effects in D-Flow FM with satisfying results. In addition, a coupling system is built...