OVERFLOOD IN PARIS: CENTENARY RISK AND STRATEGIC PROCESS

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OVERFLOOD IN PARIS CENTENARY RISK AND STRATEGIC
PROCESS
Rues de Bourgogne et Saint Dominique (1910)
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Flood it comes from
Upstream valleys and dams
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Causes
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last examples in XXth century
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They can make it worse
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Ile de France
Urbanisation (up and dowm stream of
paris) Mineralisation of the rivers sides that
increase speed of flood
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Agriculture processes making soils waterproof
Climatic discordances (El nino effect) up to
unknowm extrêmes
But also lack of preparation
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Alert and action
City crisis managers room activation
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Flooded areas
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Conséquences
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Public transports no cars, no buses, no train,
no metro the same in 2010 as in 1910 but more
people affected
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1910 1320 tons garbage a day... In the flood !!!
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THE PUBLIC ACTORS
The Préfet de Police

• 17 000 policemen , 9 000 military fire men
• rules about circulation, stationnement, funerals
• protection civile (civil safety), rescue and
  défence (plans and organisation)

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The Mayor of Paris (and the city Council)

• Rules 40 000 civil servants
• 23 units of competence streets, gardens, water
  providing and threatment of used waters,
  garbages, social welfare, public activities,
  housing, etc
• 7 Milliards (billions) euros budget

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preparation
The City of Paris get prepared by
1- Informing population about vulnerability and
risks and what to do if
2- Taking preventive measures
3- Establishing procedures
4- Acquiring crisis equipments
5- Training staff to be prepared
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1- about risk

• city civil servants but also city
  representatives in the Concil

information before the event

• technical partners
• - (EDF, France Telecom, SUEZ, water companies,
  etc..)

• population
• - specific publications including theoric damaged
  areas (vulnerable areas) and internet use
• - Public meetings

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- préventive action restrictions to buildings
authorizations (planning permission)
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• green (expansion fields to decelerate flooding )

• red  major bed  of the river, high risk for
  human rescue

• Blue urbanisez area, low risk for human rescue

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3- FORECASTING ANNOUCING WITH THE BEST
ANTICIPATION
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CONCLUSION

• -Get the maximum amount of data and use
  predictive simulation computerised models
• -transmit information as far as possible to all
  the actors involved
• -react in an integrated way with the other levels
  of government (share and adapt responsabilities
  among the different crisis centres in Paris, City
  centre, Police centre, fire department center,
  Ministry centre)

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EQUIPMENTS
4.1 Commanding rooms
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Crisis manager room Trained crew Tactical
Communications maps
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Recovery command room (if the main room is
damaged or flooded)
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Example of aterproof barriers (batardeaux) ready
to use
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Conclusion

• Only the occurrence of the centenal overflooding
  will tell us if we are ready, for the 1910
  experience is very far away and cant actually be
  tranposed to the 21st century situation (we are
  no doubt far more vulnerable today because more
  dependant to technology)
• We also are aware that information will be a key
  to mitigate the crisis