The availability of freshwater will be significantly altered in a future world affected by climate change. In some regions, water availability will decrease; in others it will increase. Precise predictions about the extent and exact location of such changes cannot be made because they are based on climate models, the accuracy of which is uncertain. However, there is wide agreement that probable changes will include less rain in southern Europe. Overall, higher temperatures in all regions, which will lead to greater evaporation so that, even in regions where rainfall does not decrease, water availability will be reduced. The goal of this course is to educate students on the expected effects of climate change on water resources. By understanding climate change impacts will help understand how it will exacerbate water scarcity in the future and how it will impact the human society and its health. Overall this course will help professionals to prepare for and adapt to the effects of climate change.