Abstract: The effects of climate change on freshwater systems and their management occurs mainly due to the observed and projected increase in temperature, increase in precipitation, rise in sea level and precipitation variability. By this, climate warming accelerates the global water cycle on the planet, making arid regions even drier and leading to flooding in the wet ones. According to the findings of scientists, made on the basis of 13 years satellite observations, the warming of the Earths climate leads to increased evaporation of water from the surface of the oceans, which causes more rainfall than before, that riverbeds return to the ocean.