This course will introduce students to the foundations of watershed management and hydrology in humid and arid environments with emphasis in the Mediterranean. Watersheds are the basic land unit for water resource and essential for sustainable management. Important hydrologic concepts and methods and the hydrologic cycle are described in detail to provide a foundation for how landscapes and water interact. Integrated Water Resources Management (IWRM) will be the basis and the participatory approach will be described in developing management plans and how it is necessary to balance different water resource needs and demands.