Singapore water week: Dutch and Singapore experts discuss risk-based prevention of urban flooding

June 27th, 2012 by nwp

A distinguished panel of experts who are involved in providing integrated drainage solutions for urban storm water management and flood risk management will share their views on these challenges in a workshop on July 1st.

The workshop ‘Managing Urban Floods in light of weather uncertainties and climate change’ is part of the Singapore International Water Week and is organized by the Singapore-Delft Water Alliance (National University of Singapore) and Public Utilities Board (PUB).

New way to design urban drainage
Many hydrologists around the world feel the urge for a new paradigm in urban drainage design. Besides climate change, rapid urbanization is also impacting the hydrological cycle and has caused an increase in surface water run-off in urban areas and cities. More integrated solutions are now required to address the increasing flood risks and their impacts, reduce the cities’ vulnerability to floods, and safeguard the lives and properties of their citizens, as well as the cities’ infrastructure. This is especially so for cities located within the low lying river basins, coastal areas and those susceptible to tropical monsoons and hurricanes.

Dramatic changes in urban hydrology
One of the speakers in the workshop is professor Vladan Babovic of the National University of Singapore and head of the Singapore-Delft Water Alliance. He will address the new kind of infrastructure that is needed. “With current pace of urbanization globally we witness dramatic changes in urban hydrology and hydraulics. We experience more frequent urban flash floods, while we also more frequently suffer from droughts. At the very same time with climatic changes as in short term continued and accelerated rate of urbanization, we have to re-think the way in which we manage urban water”, remarks Babovic.

Increasing flood and drought resilience
“Essentially, traditional design paradigm of urban drainage systems is not able to raise to these challenges”, continues Babovic. “Next Generation Infrastructure needs to be invented which will simultaneously increase flood and drought resilience in cities today, while taking into consideration possible future weather and climate scenarios. A challenging task indeed, but the one that must be addressed immediately. First steps in this direction have been identified, and the workshop will share some these experiences”.


Professor Vladan Babovic during a previous workshop on new urban hydrology at the Technical University of Delft on June 14.

Participation in the workshop is free of charge.

See the full programme:
www.sdwa.nus.edu.sg


More information
Singapore-Delft Water Alliance (SDWA)
Singapore
sdwa@nus.edu.sg
+65 6516 6852
www.sdwa.nus.edu.sg


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EU project RainGain: TU Delft tests rain radar for better picture of local precipitation

August 13th, 2011 by nwp

Technical University Delft is to participate in the RainGain project, which was recently awarded a European subsidy. The project includes such aspects as the placing of rain radar in Rotterdam, which is specialised in local precipitation measurement. This will enable precipitation patterns in the city to be measured much more accurately and urban water management to be deployed better and more efficiently. Possible applications include the intelligent control of pumping stations, the use of water storage (the water squares in Rotterdam) and local weather reports.

Cooperation with Belgian, French and British partners
Dutch partners in the project are the Municipality of Rotterdam and the Province of Zuid-Holland. The faculties of Civil Engineering and Geosciences (CiTG, Water Management department) and Electrical Engineering, Mathematics and Informatics (EWI, Remote Sensing of the Environment department) from the TU Delft are involved. In addition, there is co-operation with Belgian, French and British partners.

Detailed data about peak precipitation
Researcher Marie-Claire ten Veldhuis of TU Delft: ‘The purpose of this project is to obtain detailed data about peak precipitations and flooding on an urban scale. Up to now information on this particular scale has been lacking. Detailed precipitation and flooding data will help water managers in the city to react adequately to heavy precipitation and to prevent the flooding damage that was frequently caused by such events during the past decades.’

Required time and space scalesRain radars are the only measuring instruments that can provide precipitation measurements on the necessary time and space scales that are required for this purpose. This technology has only recently been developed to the detailed level needed for urban areas. The innovative technology will be implemented in water management practice in the pilot locations of the partner countries.

New radars in Rotterdam and Paris
The new radars have been provided for pilot locations in Rotterdam and Paris. Similar technology was installed in Leuven (Louvain) in Belgium several years ago. In the United Kingdom, a new super-resolution protocol will be used for detailed precipitation data on the basis of the radar of the Met Office.

Improved urban water management
The precipitation data will provide detailed information about peak precipitations to the urban water managers, on time and space scales that are critical for the fast urban drainage processes. The information will be used in flooding models for the pilot locations in the four partner countries to develop effective solutions for improved flooding protection, such as warning systems and optimisation of storage capacity.

These solutions will then be tested on the basis of the detailed precipitation data and flooding models. The end users will be trained in the use of the rain data and the models, so that they can continue to apply them in practice after the project.

More information
Marie-Claire ten Veldhuis PhD, J.A.E.tenVeldhuis@tudelft.nl, (015) 27 84734
Research information officer TU Delft

This news items was originally published on the Technical University Delft website


Posted in News.

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