The purpose of ICOLD Bulletin 169 is to assess the role of dams and reservoirs in adapting to the effects of global climate change, determine the threats, and potential opportunities, posed by global climate change to existing dams and reservoirs, and then recommend measures to mitigate against or adapt to the effects of global climate change. This bulletin is organized in chapters that include the following:
- a description of what is at risk when considering dams, reservoirs and related water resources
- facts and uncertainties with climate evolution, mainly based on past observations analysis
- framework and method for assessing climate induced impacts and risk at watershed scale
- other drivers besides climate change that can affect the balance between resources and needs: demography, technology, sedimentation
- climate-driven opportunities for new storage
- emissions of greenhouse gases associated to reservoirs and water resources
- adaptation strategies and case studies from different regions of the world and illustrating different water resources systems situations
- recommendations
ICOLD recommendations (chapter 10) address three broad themes:
Recommendation 1: Adopt a whole-of-system approach.
Recommendation 2: Apply an adaptive management process.
Recommendation 3: Collaborate with a wide range of disciplines, interest and stakeholders (including engineers alongside decision makers, politicians, natural resource scientists, social scientists, economists and the greater community) in the assessment of enduring and effective adaptation options.
L'objectif de ce ICOLD Bulletin 169 est d'�valuer le r�le des barrages et r�servoirs dans l'adaptation face aux effets du r�chauffement climatique, de d�terminer les risques de m�me que les opportunit�s potentielles, impos�es par le r�chauffement climatique aux reservoirs et barrages, puis recommander des mesures d'att�nuation ou d'adaptation aux effets du changement climatique mondial.
Le pr�sent bulletin est structur� en plusieurs chapitres comprenant les �l�ments suivants:
- la caract�risation des risques pour les barrages et r�servoirs, et pour la gestion des ressources en eau associ�es
- les constats et incertitudes li�s � l'�volution du climat, principalement fond�s sur l'analyse des observations ant�rieures
- les principes m�thodologiques des �tudes d'�valuation des impacts et des risques induits par l'�volution du climat � l'�chelle du bassin versant
- d'autres facteurs que le changement climatique qui peuvent affecter l'�quilibre entre les ressources et les besoins: d�mographie, �volution technologique, sedimentation
- l'opportunit� de cr�er de nouvelles r�serves de stockage pour augmenter la r�silience des syst�mes aux effets climatiques
- un point sur les �missions de gaz � effet de serre imputables aux r�servoirs et aux ressources en eau
- des principes de strat�gie d'adaptation et des �tudes de cas provenant de diff�rentes r�gions du monde, illustrant diff�rentes situations des syst�mes de gestion des ressources en eau
- des recommandations.
Les recommandations g�n�rales portent sur trois grands th�mes:
Recommandation 1: adopter une approche syst�mique d'ensemble
Recommandation 2: Appliquer un processus adaptatif de gestion
Recommandation 3: Collaborer avec un large �ventail de disciplines, et de parties prenantes (ing�nieurs, d�cideurs, �lus, sp�cialistes des ressources naturelles, sp�cialistes des sciences sociales, �conomistes et la collectivit� dans son ensemble) dans l'�valuation des options d'adaptation durables et efficaces.
The Commission Internationale des Grands Barrages (CIGB) / International Commission on Large Dams (ICOLD) is a non-governmental International Organization which provides a forum for the exchange of knowledge and experience in dam engineering.
The Organization leads the profession in ensuring that dams are built safely, efficiently, economically, and without detrimental effects on the environment. Its original aim was to encourage advances in the planning, design, construction, operation, and maintenance of large dams and their associated civil works, by collecting and disseminating relevant information and by studying related technical questions.
Since the late sixties, focus was put on subjects of current concern such as dam safety, monitoring of performance, reanalysis of older dams and spillways, effects of ageing and environmental impact. More recently, new subjects include cost studies at the planning and construction stages, harnessing international rivers, information for the public at large, and financing.
