A comprehensive assessment of multilayered safety (meerlaagsveiligheid) in flood risk management

Multilayered Safety (MLS) is seen as the next step in Dutch flood risk management. In the last decades the idea that only flood defenses can prevent floods gave way to the realization prevention can also be implemented along other lines, e.g. giving the rivers more space. The next thought was that next to preventing floods it should be possible...

A Flood Defence Strategy for the Greater Concepción, Chile: Analysing, modeling and finding engineering solutions for the Biobio floods

Multidisciplinary Master Project In 2006, the Greater Concepción (Chile) experienced major flooding of the River Biobio with millions of dollars worth of damage as a consequence. This event was previously seen as a 1 in a 100 year event by the authorities. These conditions, however, are calculated to have a return period of about 20 years...

The Framework for Integrated Water Management in the Thua Thien-Hue Province

The Thua Thien-Hue province is located in the centre of Vietnam. It is characterized by the short distance between the mountains in the west and the coast of the South China Sea in the east. Two large rivers flow through the province, fed by multiple smaller rivers from the mountains. The Bo River flows through the northern part of the province...

Design of a breach retardant dike

Sand dikes have a sand core and a clay layer to protect the core against erosion. It is not unlikely that this layer fails due to several failure mechanisms, exposing the sand core to water. This can be catastrophically when water is overtopping the dike. In case the protective cover fails, water can flow over the core and erode the sand,...

Bed level changes in the Waal during floods

Bed level changes during a flood can have large influence on the safety against flooding and the navigational function of a river. In 1997 measurements were carried out in the Waal during a flood. These measurements present an average decrease of the bed level in the order of 10 cm over a 10 km reach which is much larger than expected from the...

Impact Modelling of Hurricane Sandy on the Rockaways: Relating high-resolution storm characteristics to observed impact with use of Bayesian Belief Networks

Hurricane Sandy (2012), which made landfall in New Jersey on October 29th, made devastating impact on the East Coast of the USA and struck major parts of New York City, including the economic centre of Manhattan. The total damage (in the USA and Caribbean) is in excess of 100 billion US$ with estimates ranging between 78 and 97 billion US$ for...

Potential Measures to reduce Fluvial and Tidal Floods in the Pampanga Delta, Philippines

The Pampanga and Angat River Delta, located on the northern side of the Manila Bay in a large alluvial plain, are regularly confronted with worsening fluvial and tidal floods. Subsidence rates up to 4.5 cm/year due to excessive groundwater extraction are the main cause of the worsening floods. Five measures are presented to reduce the floods: -...

Use of Compartment Dikes as a Flood Management Strategy in Schouwen-Duiveland

CIE4061 Multidisciplinary Project: We were tasked with determining the feasibility of dike compartments to mitigate flood risk in Schouwen-Duiveland, The Netherlands. The primary dike protecting the polder of Bruinisse is vulnerable to piping failure, leading to a high probability of flooding. In the event of a flood, the small but deep polder...

Project Cartagena: "A flood free city"

Cartagena is a city located at the Caribbean coast of Colombia, founded in 1533 by the Spanish. Its population consists over one million inhabitants, making it the fifth largest city in Colombia. Due to its strategic location, the port of Cartagena has grown into the largest port of the Caribbean coast, making it very important for the Colombian...

Flood Risk Guayaquil: A critical analysis on inundations

Despite several researches about the hydrological and hydrodynamic system of the Guayas region, elementary insight of the total system was lacking. Therefore, the purpose of this study was to create a general overview regarding floods. Besides, basic solutions are proposed for preparing Guayaquil against floods which might be present in the...