This course describes anthropogenic impacts on water in the landscape and the application of ecosystem-based catchment management approaches. It addresses various topics related to water management, including the importance of water for society, aquatic ecosystems, human-induced landscape changes, the impact of agriculture and forestry on catchment areas, functions of catchment area management, protection and organization of catchment areas, sediment management in streams and reservoirs, erosion control and flood control measures, land-improvement facilities, rainwater management, stream modifications and restorations, water retention, extreme events (floods and droughts), and hydro-technical structures like dams, reservoirs, weirs, hydroelectric power plants, and navigation canals.