Flood early warning
system in France
Caroline Wittwer
SCHAPI
Direction générale de la prévention des risques
Service des risques naturels et hydrauliques
Forum international de la météorologie
Paris, le 21 octobre 2010
Ministère de l'Écologie, de l'Énergie, du Développement durable et de la Mer
en charge des Technologies vertes et des Négociations sur le climat
www.developpement-durable.gouv.fr
Floods in France
5 millions people live in
flood areas (12 000
towns)
Loire basin, 2008
Marseille, 2003
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FIM, 21 octobre 2010, Caroline Wittwer, SCHAPI
Floods in France
5 millions people live in
flood areas (12 000 towns)
20 000 km of main rivers
are surveyed by the
national hydrological
vigilance (on the 120 000
km rivers larger than 1m) Gard, south of France, 2002
Somme, north of France, 2001
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FIM, 21 octobre 2010, Caroline Wittwer, SCHAPI
Floods in France
5 millions people live in
flood areas (12 000 towns)
20 000 km of main rivers
are surveyed by the
national hydrological
vigilance (on the 120 000
km rivers larger than 1m)
Paris, le zouave 1982
90 % population in flood
areas is concerned by
the hydrological
vigilance
Small river in Loire basin, 2008
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FIM, 21 octobre 2010, Caroline Wittwer, SCHAPI
The Flood Vigilance System (July 2006)
http://www.vigicrues.gouv.fr
To better anticipate flood crises through regular and
formatted information
To use a common decision-aid system for a graduated
involvement of civil security
To directly inform the population to help them become
actor
Published at 10:00 AM
and 4:00 PM, updated
if necessary
Pushed at the same
time to State authorities
FIM, 21 octobre 2010, Caroline Wittwer, SCHAPI
3 levels of information
... the
national
map
and
bulletin
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FIM, 21 octobre 2010, Caroline Wittwer, SCHAPI
... the regional map and bulletin with detailed information
on the evolution of waterlevels for each of the sections,
as well as forecasts
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FIM, 21 octobre 2010, Caroline Wittwer, SCHAPI
... the local level with real-time access to the stations,
references to past floods and information on the stations
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FIM, 21 octobre 2010, Caroline Wittwer, SCHAPI
Since December 2007 :
joint meteo and hydro procedure
the “rainfall-flood” vigilance
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FIM, 21 octobre 2010, Caroline Wittwer, SCHAPI
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Various tools depending on anticipation
10
days
5
days
CEP
Rainfall probabilities
3
days
1
day
Expertised
values
12
hours
8x3h model
data
data
Vigilance
procedure
EFAS
SIMPE
Soil
moisture
Decision-aid
graphs
Various types of models
for flood forecasting at
stations
FIM, 21 octobre 2010, Caroline Wittwer, SCHAPI
Operational flood forecasting system
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FIM, 21 octobre 2010, Caroline Wittwer, SCHAPI
Thank you for your attention
and select
www.vigicrues.gouv.fr
for hydrological vigilance
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FIM, 21 octobre 2010, Caroline Wittwer, SCHAPI