Numerical investigation of plastic fragment accumulation against a sluice gate

The ramifications of plastic pollution on the environment are becoming increasingly serious in various forms throughout the world. In this context, rivers are the most important suppliers of plastics entering the marine environment. However, rivers that contain high loads of plastic waste also directly harm the livelihoods of people living near...

Verdeling en verdeeldheid in het afvalwatertransportsysteem: Een analyse over de kostenverdeling tussen waterschappen en gemeenten

In 1972 the Union of Waterboards and the Association of Dutch Municipalities drew up a directive to give waterboards and municipalities a guideline in how to divide tasks and costs in the new situations that were the result of the Pollution of Surface Waters Act, decreed in 1970. At 7 waterboards costs are still settled with (a part of) the...

Effects of flexible water level management on flood risk in areas outside primary levees around the IJsselmeer and Markermeer

Since 2019, Rijkswaterstaat has been applying flexible water level management in the IJsselmeer and Markermeer to make the Dutch water system more robust and future proof. The fixed target water level of -0.20 m NAP during summer is replaced by a flexible water level in which the water level can fluctuate between -0.10 and -0.30 m NAP to enlarge...

White Volta Water Retention: Thesis on the Impact of Constructing Multiple Small Dams on Floods and Sedimentation in Northern Ghana

Human interventions in the White Volta River in Ghana increase the flood risk in living spaces of the local communities, causing great challenges in the area. Burkina Faso has built a hydropower dam near the border with Ghana which has a large impact on the discharge extremes of the White Volta River. As a result of poor water management of this...

Hydraulic Modelling of the Irrigation System of Medieval Basrah

Ancient Basrah has been the center of anthropological research studies due to its significance in the development of the culture, politics and economics of the region at the time. Agriculture was one of the main income revenues for ancient Basrah even though it received only an average of 60mm of rainfall per year, indicating a large reliance on...

Determining drought-induced subsidence in urban areas: An in-practice analysis of drought impacts on subsidence in two Dutch soft-soil cities

Drought and subsidence are two out of several water-related urban climate adaptation challenges many cities in the Netherlands currently face. Drought is expected to increase in frequency and extent due to climate change. Therefore, drought is likely to further pressurize (subsiding) urban areas in the coming decades. Although the impact of...

Buffering fresh water at the Volkerak-Zoommeer to mitigate drought: Developing a Decision Supportt System to evaluate the potential of temporarily heightening of the water level

The Volkerak-Zoommeer is a former estuary located the Rhine Meuse Delta in the southwestern part of the Netherlands. After the completion of the Volkerakdam, Philipsdam and Oesterdam as part of the Delta Works, this estuary was cut of from the Oosterschelde and a fresh water lake was formed in a sea water environment. This new lake became the...

Screening flood adaptation measures framework

To reduce the flood risk in areas prone to flooding, possible adaptation measures must be investigated. In this thesis a Python-based framework has been developed that can screen flood adaptation measures as an alternative to the existing analytical method of Royal HaskoningDHV. The framework is limited to the costs and effects on the economic...

Low polders and high waters: Dealing with uncertainties of climate change in future polder management

It is no secret that the climate is changing, however, the severity and speed of this process is under debate. This leads to the question if and when we need to take action to protect the Netherlands against the effects of climate change. In order to deal with the uncertainties in policy- and decision-making, an adaptive approach is desirable....

Estimating Total Suspended Matter in Low to Extremely High Level Turbid River Surface Waters using a WISP-3 Hyperspectral Radiometer and Sentinel-2 Optical Imagery: A case study conducted on the Brantas River Basin, East-Java, Indonesia

This research focuses on using Sentinel-2 optical imagery to provide a means of high-resolution monitoring and evaluation of changes in Total Suspended Matter (TSM) concentration in the Brantas river basin. In situ spectral measurements as well as laboratory results show an extremely turbid nature of the Brantas River surface water. Current...

Assessing the functional performance of the Meuse river: The impact of bed developments and an altering discharge regime on future river functioning

The Meuse river facilitates important socio-economic functions. In the light of Integrated River Management (IRM), the question rises whether these functions can be facilitated in future decades (until 2050) as well. The riverbed is expected to degrade over the coming decades, just like in the past century. On top of that, the discharge regime...

Below the surface: A laboratorial research to the vertical distribution of buoyant plastics in rivers

Rivers are identified as main sources of plastic litter in oceans. About 65% of the plastic litter is buoyant in fresh waters, meaning it has the capability to float, making transport over rivers relatively easy. A better understanding of how plastic litter is transported via rivers is crucial. Both for quantification and mitigation of the...

Socio-hydrology in the floodplain: Investigating patterns of human response to riverine floods by quantifying the human footprint in flood prone areas using nighttime light data

Flooding is globally one of the most damaging natural hazard. Flood risk will most likely increase in the near future due to increases in flood frequency attributed to climate change and growth in population and wealth in flood prone areas. This growth in wealth and population is increasingly considered as a major driver for the increase in...

Analysing the effects of extreme precipitation for municipalities and waterboards: Do they need to connect their sewer and surface water models?

The world’s climate is changing. In the Netherlands one of the consequences is that water boards and municipalities are preparing for an increase in extreme precipitation. To evaluate the consequences in case of extreme precipitation all Dutch municipalities and water boards have to perform a stress test. In these stress tests the response of...

Socio-Hydrology of Keduang Sub-basin in Central Java, Indonesia using case study approach: Understanding the relation between hydrology of Keduang sub-basin and social aspects using qualitative case study

Since coined in 2011, socio-hydrology studies have been dominated with mathematical models developed by mostly hydrologists, which often did not take social aspects into account so seriously. Some people argued that more attention into the social part of socio-hydrology should be given, because often the social aspects were too oversimplified....

Exploring Conceptual Variation by Design for the aQysta pump placement process

aQysta is a company that has developed spiral pumps that can deliver water for irrigation through hydraulic energy (aQysta, 2018). That makes these pumps very dependent on the location where they are placed for their water delivery. Their dependency on hydropower also impacts the water supply of these pumps to surrounding irrigation fields ...

Assessment of Economic Potential of Ocean Thermal Energy Conversion in Indonesia: A Spatial Approach

<b>What are the national and provincial economic potentials of ocean thermal energy conversion in relation to the provincial electricity demand fulfilment in Indonesia?</b> When we are talking about the economic potential of OTEC in Indonesia, we are talking about potential as a result of different possible configurations. On the national level,...

Modeling water flow in a Dutch polder network

Agragrians in the Dutch Wadden sea region struggles with salinizing farmlands. Acacia Water's project Spaarwater enabled agrarians to measure salt concentrations in the ditches of their land using their mobile phone. All these measurements would ideally be used to evaluate the effects of salinization mitigation measures and to predict water...