The fight against floods in French Riviera

Juan G.R. and Juan G. M. The fight against floods in French Riviera requires modernization of the urban drainage.

Water and Irrigation Vol .: 6, No. 1: 27-29, October, 2015, Spain.

In many towns and cities in France there are areas with poor drainage system is unable to evacuate large volumes of water in a short time, to address the challenge of climate change, which is increasingly aggressive, solve problems reflect a common factor, are special hydraulic engineering projects which require large investments and state aid to prioritize an action plan to reduce the ravages of flooding to a minimum. Floods as a result of the cold drop that hit the French Riviera to the southeast of France caused 17 deaths, torrential rains overflow rivers, dragged everything in their path in the streets and roads. French meteorological agency reports that in Cannes 180 mm rainfall collected in 2 hours, flooding also caused economic trade and other area businesses losses, French President Francois Hollande declare the area in a state of natural disaster.

Floods as a result of the cold drop on October 3, affecting the French Riviera to southeast of France caused 17 deaths, while three people were missing, cars and furniture is piled in the streets, roads and highways were damaged, blocked passenger trains, high winds brought down many trees. Many cities in which pavilions were set up to accommodate those affected were affected, the greatest damage occurred in the area between Nice and Cannes, the city more damaged was Mandelieu-la-Napoule, located near Cannes where 7 people died, is the storm that has caused more deaths in France since 1990. In some cities, such as Cannes, the authorities have carried out arrests because some people had taken advantage of the chaos to carry out robberies. According to French sources of information.

French President accompanied by Interior Minister visited the affected area, the president wants to show directly the solidarity of the nation to those affected and moved to some of the places where there have been dead and damage. An estimated 29,000 homes remain without electricity for damage caused by flooding, which also caused economic losses to retailers and other businesses in the area. The damaged area has high levels of urbanization, which caused torrential rains dragged everything in their path in the streets and roads. Most of those killed were swept away by the action of water. François Hollande has declared the area in a state of natural disaster.

French meteorological agency reports that the day 3 October were collected in 2 hours in the Maritime Alps. 180 mm of rain in Cannes with an average intensity of 1.5 mm / min, 159 mm in Mandelieu-la-Napoule and 100mm in Valbonne, representing twice the monthly average on the French Riviera in southeastern France considering that the annual rainfall in France is about 900 mm. Maximum rainfall levels exceeded the figures recorded to date. The storms usually affect much of the coastline, but this time occurred for two hours in a very localized area, which intensified flooding.

In the period from September to March is the stage of highest rainfall and there is a higher probability of flooding point that appear the cold drop, which is a meteorological phenomenon that can cause heavy rainfall and still are not well protected to combat the effects induced therein. The cold drop is also manifested with great intensity on the southeast coast of Spain where the floods caused by the cold drop pose a great danger and have a devastating action, mainly in the Mediterranean area where there are areas which have recorded rainfall of about 800 l / m2 in just over two hours, as was the case of Oliva in Valencia on November 5, 1987.

The flood control in urban areas is not only a problem in France, but it also occurs with great intensity in different regions of Europe, America, Asia, Africa and Oceania, where flooding caused extensive damage and loss of life and materials, solve problems reflect a common factor, are special hydraulic engineering projects which require large investments and state aid to prioritize an action plan to reduce the ravages of flooding to a minimum.

The flood control should be intensified, it is necessary decisions in time to counteract the damage caused by excessive rains, the investments to be made to ensure these measures are smaller than those caused by human and material losses themselves, not it is necessary to wait until there are significant losses as a result of excessive water to develop a more effective strategy. In many towns and cities in France there are areas with poor drainage system is unable to evacuate large volumes of water in a short time, to address the challenge of climate change, which is increasingly aggressive Moreover, the rapid development urban repeatedly has not valued enough security plan sewerage and facility protection against internal and external flooding, there are also agricultural areas and means of communication that are not properly protected with efficient drainage systems, which brings consequently large areas being flooded and losses in collateral.urban areas

Climate change is characterized by prolonged droughts and heavy rains that alter weather patterns, causing major disasters and floods, rising global temperatures, melting, rising sea levels and increased tropical storm activity and cyclones. In the fight against climate change it is recommended to reduce carbon emissions and increases reforestation that greater presence of forest area, it tends to regulate the temperature and increase the barrier of trees that mitigates the effects of wind tornadoes, should be designed and adapted urban systems and agricultural drainage according to the new challenges that climate change provoke as consecuence in great measure to human activity.

 

http://www.aguayriego.com/2015/10/la-lucha-contra-inundaciones-en-francia-requiere-modernizar-el-drenaje-urbano/

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