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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. 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

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  1. 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

  2. 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

  3. Area: 100.000 km² Length : 1.000 km Very irregular flow 3rd Yangtze Forum - Shanghai - April 2009

  4. Upper part of the basin 3rd Yangtze Forum - Shanghai - April 2009

  5. The Middle Loire Amboise Orléans Nuclear plant Nevers Angers 3rd Yangtze Forum - Shanghai - April 2009

  6. Levees, breaches and spillways in in the middle Loire 3rd Yangtze Forum - Shanghai - April 2009

  7. 2003’s flood (middle Loire) 1949’s draught 3rd Yangtze Forum - Shanghai - April 2009

  8. Downstream Loire 3rd Yangtze Forum - Shanghai - April 2009 3rd Yangtze Forum – Shanghai – April 2009

  9. 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

  10. 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

  11. Dams of Villerest and Naussac 3rd Yangtze Forum - Shanghai - April 2009 3rd Yangtze Forum – Shanghai – April 2009

  12. 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

  13. 3rd Yangtze Forum - Shanghai - April 2009

  14. 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

  15. 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

  16. 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

  17. 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

  18. 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

  19. 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

  20. 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

  21. 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

  22. 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

  23. 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

  24. See you soon along the Loire river ! 3rd Yangtze Forum - Shanghai - April 2009

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