112 p. ill. Workshop held in Sint-Michielsgestel, the Netherlands, 15-18 Sept. 2003. This workshop was organised by Ministry of Transport, Public Works and Water Management, Rijkswaterstaat, Institute for Inland Water Management and Waste Water Treatment = Ministerie van Verkeer en Waterstaat, Rijkswaterstaat, Rijksinstituut voor Integraal Zoetwaterbeheer en Afvalwaterbehandeling (RWS, RIZA) and Ministry of Transport, Public Works and Water Management = Ministerie van Verkeer en Waterstaat, Rijkswaterstaat, National Institute for Coastal and Marine Management = Rijksinstituut voor Kust en Zee (RWS, RIKZ) In co-operation with: UN-World Water Assessment Programme, France and the International Water Assessment Center