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Climate change impacts on the Loire river basin. Régis THEPOT, Chief Executive Officer of Etablissement public Loire. 3rd Yangtze Forum – Shanghai – April 2009. Loire river basin Etablissement Public Loire Current impacts of climate change on the Loire basin Plan Loire grandeur nature

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climate change impacts on the loire river basin

Climate change impacts on the Loire river basin

Régis THEPOT, Chief Executive Officer of Etablissement public Loire

3rd Yangtze Forum - Shanghai - April 2009

3rd Yangtze Forum – Shanghai – April 2009

slide2

Loire river basin

Etablissement Public Loire

Current impacts of climate change on the Loire basin

Plan Loire grandeur nature

Reducing the basin vulnerability to floods and drought

3rd Yangtze Forum - Shanghai - April 2009

slide3

Area: 100.000 km²

Length : 1.000 km

Very irregular flow

3rd Yangtze Forum - Shanghai - April 2009

slide4

Upper part of the basin

3rd Yangtze Forum - Shanghai - April 2009

the middle loire
The Middle Loire

Amboise

Orléans

Nuclear plant

Nevers

Angers

3rd Yangtze Forum - Shanghai - April 2009

slide6

Levees, breaches and spillways in in the middle Loire

3rd Yangtze Forum - Shanghai - April 2009

slide7

2003’s flood (middle Loire) 1949’s draught

3rd Yangtze Forum - Shanghai - April 2009

slide8

Downstream Loire

3rd Yangtze Forum - Shanghai - April 2009

3rd Yangtze Forum – Shanghai – April 2009

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Etablissement Public Loire

A Public Institution gathering local communities at the river basin level

.6 Regions

.16 Departments

. 18 Cities

3rd Yangtze Forum - Shanghai - April 2009

3rd Yangtze Forum – Shanghai – April 2009

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Role of EP Loire

Area of competence

A tool for solidarity and subsidiarity at river basin level

Flood prevention

Water

Water ressources management

Operating two dams Naussac and Villerest

Local development

3rd Yangtze Forum - Shanghai - April 2009

3rd Yangtze Forum – Shanghai – April 2009

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Dams of Villerest and Naussac

3rd Yangtze Forum - Shanghai - April 2009

3rd Yangtze Forum – Shanghai – April 2009

current impacts of climate change on the loire basin
Current impacts of climate change on the Loire basin

Already noticeable on :

  • Warmer air temperatures (1°C in average during the 20th century)
  • An increase of about 1°C in the water temperature in middle Loire

More contrast in variation in rainfall (trend not detected for the extreme values)

3rd Yangtze Forum - Shanghai - April 2009

current impacts of climate change on the loire basin14
Current impacts of climate change on the Loire basin

A relative overall ignorance of the impact due to :

  • The lack of research or analyses at that level
  • The difficulty to separate the CC impacts from other factors
  • The difficulty in modelling extreme weather phenomena with global climate models
  • The lack of datas on long enough periods

3rd Yangtze Forum - Shanghai - April 2009

reducing the basin s vulnerabity to floods and drought
Reducing the basin’s vulnerabity to floods and drought

The dual scope of :

  • the Plan Loire Grandeur Nature funded by the European Union
  • and the choice of the Loire Basin as national pilot site by the French Ministry of Ecology, Energy, Sustainable Development and Spatial Planning

3rd Yangtze Forum - Shanghai - April 2009

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Plan Loire grandeur nature 1994 - 2006

Initialy a top-down approach

Was decided by the governement in 1994 after fierce ecological conflicts concerning the construction of dams

Serre de la Fare

Main Objectives

- integrated management of the Loire river basin

- a joint approach associating involved actors and scientific assessment

310 M€ / 3 billion RMB

Duration: initially 10 years prolonged to 12

3 main contractors

3rd Yangtze Forum - Shanghai - April 2009

slide17

Plan Loire 2007-2013

A top-down and bottom up approach

  • Based on the EU WFD and the Aarhus convention :
  • global assessment of Plan Loire 1994-2006
  • consultation in 2006 of the stakeholders in order to elaboratea strategic document defining sharedstakes
  • organization of regional and thematic meetings on the whole Loire basin
  • dedicated website forum
  • global budget 2007-2013 : 400 M€/4 billions RMB

3rd Yangtze Forum - Shanghai - April 2009

3rd Yangtze Forum – Shanghai – April 2009

slide18

5 key fields of action in 2007-2013

Safety of population facing flood risks

Managing water resources

Restoring natural aquatic ecosystem and wetlands

Enhancing the Loire valley heritage

Developing research and data exchanges

3rd Yangtze Forum - Shanghai - April 2009

two model operations funded by the european union in this context
Two model operations funded by the European Union in this context
  • An evaluation of the expected impacts of climate change on the Loire river basin
  • At the level of the basin an « industrial » approach aimed at reducing the vulnerability to extreme floods for the economic activities

3rd Yangtze Forum - Shanghai - April 2009

an evaluation of the expected impacts of climate change on the loire river basin
An evaluation of the expected impacts of climate change on the Loire river basin

3 actions undertaken in the Plan Loire Grandeur Nature since 2007 :

  • Inventory of the knowledge of the CC impacts
  • Prospective hearing
  • Defining scenarios with climate and modelling specialists

In june 2008 a call for research proposals beginning in 2009

3rd Yangtze Forum - Shanghai - April 2009

an industrial approach aimed at reducing the vulnerabity of the basin to flooding
An « industrial » approach aimed at reducing the vulnerabity of the basin to flooding
  • In the middle Loire 15.000 companies are in flood prone areas, and within 2013 :
  • 3000 companies will have carried out an assessment of their vulnerability and taken actions to reduce it
  • 900 companies, sectors and activity zones will have implemented effective and urgent measures to reduce their vulnerability

3rd Yangtze Forum - Shanghai - April 2009

perspectives for the loire basin
Perspectives for the Loire basin
  • Many questions are still unresolved
  • Nevertheless stakeholder involvement developped since 15 years on the Loire river is probably an advantage to tackle CC problems.
  • In addition to the 2 examples above the general process consists of consolidating the data production and analyses network and the dialogue between researchers and managers.
  • The dissemination of the acquired knowledge to a large audience is also a priority

3rd Yangtze Forum - Shanghai - April 2009

conclusions
Conclusions
  • At this time in Europe yet few global adaptations strategies to the impacts of CC at the river basin scale
  • Complexity and interdepence of the processes (exact nature of the associated impacts ?)
  • CC constitutes an indicator of the vulnerability ; therefore it is necessary develop « no regrets » adaptation strategies aiming to increase resilienceto extreme events

3rd Yangtze Forum - Shanghai - April 2009

slide24

See you soon along the Loire river !

3rd Yangtze Forum - Shanghai - April 2009