Author(s): D. Serre, B. Barroca & Y. Diab
Cities have started to anticipate the effects of global warming dealing with flood
Indeed, it seems that this last decade, flood risk has increased and
cities are facing on the one hand more frequent hazards, and on the other hand
different types of flooding: fluvial, coastal, estuarial and pluvial.
have to manage at least two of these flooding types.
At the same time, flood risk
management practices have changed step-by-step.
Indeed, despite efforts made
to maintain the flood defense assets well, we often observe failures leading to
finally increase flood risk in protected areas during major flood events.
Moreover, flood forecasting models, although they benefit from continuous
improvements, remain partly inaccurate due to uncertainties populated all along
data calculation processes.
This means cities cannot continue to manage flood
risk only by the use of flood defenses: sustainable options have to be designed to
better mitigate the effects of flooding in urban area and in a long term strategy.
Several European cities have suffered recent flooding events.
It was the case for
example in 2007 in United Kingdom.
During this period, major events came
from extreme rainfall and it appears that pluvial flood risk has become one of the
most frequent events.
In this context, flood risk can appear on every territory:
cities have to develop some methods to take into account this new deal, options
to achieve urban flood resilience.
Some solutions that cities are using or will be
able to set up in the near future will be described.
flood risk, resilience, urban environment.
The coming years will be focused on solutions to solve the storage of oil: this
means that sustainable cities have to find a way to cut their oil dependencies.
Size: 2,201 kb
Paper DOI: 10.2495/SC100261
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