 This study examined how climate change would affect the flow regimes of rivers in Europe. The results showed that climate change could lead to significant changes in the timing and magnitude of river flows in certain regions. For example, in the Mediterranean region, climate change was predicted to reduce snowpack and decrease winter precipitation, resulting in less spring runoff and more summer drought. In contrast, in the boreal climate zone, climate change was predicted to increase winter precipitation and reduce snowpack, leading to earlier spring runoff and higher summer discharge. Additionally, climate change was predicted to increase the frequency of extreme events, such as floods and droughts in all climate zones. This article was authored by C. Schneider, C. L. R. Lies, M. C. Ackerman, and others.