Natural river flow regimes in Europe have already been heavily modified by different anthropogenic impacts such as damming, embanking, channelization and water withdrawals. Climate change induces an additional risk. The main elements of the climate whose changes will affect the hydrological cycle and river flow regimes are precipitation, temperature, and snow cover. The changes of these elements and their consequences will be different in various European climate zones. The highest degree of change can be expected in the Mediterranean and Boreal climatic zone and the smallest in the temperate oceanic zone. There will be a change in magnitude and timing of extreme flows which will be important for the frequency and intensity of river flooding. It is expected that they will increase in the future as a result of further economic growth and climate changes. Timing of European floods is gradually changing from west to east due to increasing distance from the Atlantic Ocean as well as from the south to the north due to the increasing impact of snow-related processes. In a seminar paper it is explained for each of the six European climatic zones how typical river flow regimes could look like in 2050 under the influence of climate change only and it is demonstrated by the hydrography of each representative river. Climate change will have major consequences both on land and the ecosystems and on the availability of fresh water for human consumption so it is imperative to carefully manage water resources in order to alleviate them.