The effect of the imperviousness on the hydrological response time of sewer districts in Rotterdam: Study based on new monitoring system by municipality of Rotterdam

Additional thesis - Due to an expected increase in rainfall intensity in the future because of climate change for the area of Rotterdam, the amount of storm water runoff will increase as well, resulting in higher stress on the sewer system. But until now we don’t fully understand the behavior of a sewer system. This additional thesis should help...

Project Ladysmith

Ladysmith, a small city in KwaZulu-Natal (South Africa) had to deal with severe floods in the past. To prevent the city against floods like this, the Ladysmith Flood Protection Scheme was implemented in 1998. After the implementation of this scheme, there were still some floods. The goal of this project is to identify the causes of the floods...

Analysis of drainage system in Georgetown, Guyana

In 2015 Georgetown, Guyana suffered from major flooding due to heavy rainfall. The use of a centuries-old agricultural drainage system for the urban drainage of the largest urbanized area of Guyana, poses problems considering flood safety. In 2016 a report was published by a ‘Dutch Risk Reduction Team’ (DRR Team) with recommendations on how to...

Automatic identification of water courses from AHN3 in flat and engineered landscapes

The Netherlands is characterised by mostly low lying, flat, and engineered agricultural lands, which are sensitive to flooding. To protect against floods, a correct network characterisation is of the utmost importance. A Dutch water resources management company, the HDSR, wishes to have a highly automated method to characterise the water course...

A hydromechanically coupled flowline model for simulating glacier surge behaviour of land-terminating, hard-bedded, temperate glaciers

Glacier surge behaviour is characterized by multiyear, quasi-periodic changes in glacier geometry and ice flow. Various attempts have been done on modelling glacier surge behaviour. The focus of this research will be on land-terminating, hard-bedded, temperate glaciers (LHT-glaciers). Whereas the drainage system at the base of the glacier is...

Infiltration swales: Quantitative performance on an urban catchment scale

The research focused on the quantitative performance of infiltration swales on an urban catchment scale. A swale in the city of Utrecht was monitored for 5.5 weeks. Groundwater levels, inflow and outflow were measured. The measured data was used for the validation of a swale model in MetaSwap-Modflow developed for this research. An Infoworks...

Applying data-assimilation and calibration in the field of urban drainage

Functioning, monitoring and maintenance of urban horizontal subsurface drainage systems

Introduction Dutch municipalities have a legal duty in groundwater management. Adequate and effective management of horizontal subsurface drainage systems is important in fulfilling this duty. The service life time of these systems have to be optimized. Financial resources should be used efficiently. Only since a few years there is a proactive...

Drainage Tubes versus Sediment

The study starts with possible working mechanisms of the tubes within the complex beach system. In addition, huge amounts of data are collected which tells us more about the sedimentology of the beach and soil structure. This data is used later on to study influenced beach processes and morphological change. For this study both the beach near...

Morphodynamic analysis Ecobeach project

The Ecobeach project is a newly invented method to defend the coast against erosion. Ecobeach is a coastal defense system based on the principle of passively draining the beach. This Thesis looks into possible morphological changes induced by the Ecobeach test at Egmond aan Zee performed by Rijkswaterstaat and BAM.

The influence of an Ecobeach PEM on beach development

Since the end of 2006 in the Netherlands a test is going on with a passive beach drainage system called Ecobeach. The system consists of vertical draining tubes with a length of 2.0 m called PEMs (Pressure Equalizing Modules). Under the surface level, every 100 m a row of PEMs is installed between the high and low waterline. Ecobeach is a Danish...

Wave overtopping aspects of the Crest Drainage Dike: A theoretical, numerical and experimental research

In the framework of the ComCoast project, the concept of the Crest Drainage Dike has been studied regarding the reduction of wave overtopping. This study only focuses on the average wave overtopping discharge. The basic concept of the Crest Drainage Dike is a basin, integrated in the crest of the dike, that collects overtopping water and thus...

Water management Polder 29 Bangladesh

In this study for a part of Polder 29, one of DDP's pilot polders, it has been determined to which extent the system of channels and structures have a drainage and irrigation capacity which meets the requirements for cultivation of High Yielding Varieties and recommendations have been made how to meet these requirements. Irrigation and drainage...