Climate change is expected to have a significant impact on water resources, necessitating the search for suitable adaptation options. However, understanding the impacts of climate change on water resources will not be possible without an in-depth knowledge of the hydrological cycle and hydrology. This website has a plethora of training material on hydrological concepts and processes; e.g., water cycle, hydrometry, topography, rating curves, data management, flow measurement and groundwater. Users interested in capacity building exercises should find this website useful.