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COMMISSION INTERNATIONALE DES GRANDS BARRAGES ------- VINGT-SIXIÈME CONGRÈS DES GRANDS BARRAGES Autriche, juillet 2018 ------- DAMS AND RESERVOIRS - CLIMATE CHANGE ADAPTATION STRATEGY Hubert LOHR Managing Director, SYDRO CONSULT GMBH Felix FROEHLICH Marius HERBER Sandra RICHTER Project engineers, SYDRO CONSULT GMBH GERMANY 1. INTRODUCTION The aim of the project is to develop adaptation strategies for dams and reservoirs that take into account shifting precipitation regimes and their resulting discharge and water quality conditions. For several years, changes in the precipitation regime have been observed in Germany. Rainfall in February to April shifted more into the summer. Although total annual rainfall remained nearly the same, the resulting discharge was less due to higher losses in the summer months. As a consequence, reservoir operators experience difficulties in reaching full supply level in spring in order to fulfill existing and competing uses and requirements over the course of each year. This also impacts on local communities and water suppliers. The emphasis of this study lies on the early recognition of droughts and corresponding reservoir management. The identification of possible counter 384