This book details theexperiences gained by the Catalan Water Agency (ACA) in a Mediterraneanwatershed - the Catalan River Basin District - following the launch of the EUWater Framework Directive (WFD) in the year 2000. Groundwater and coastal waterexperts present 13 chapters defining tools for water-status assessmentspecially adapted to Mediterranean conditions. The content of this and thecompanion volume Experiences from SurfaceWater Quality Monitoring: The EU Water Framework Directive Implementation inthe Catalan River Basin District (Part I) are the result of an excellentcollaboration between the ACA and several Catalan universities and researchcenters to cope with new challenges provided by the WFD monitoring requirements.The volume serves as a useful guide for environmental managers and scientistsengaged in other European as well as Non-European river basins.