Editorial remarks.-- Open discussion: Water management entities at the river basin level: the experience of Argentina.-- News of the network: Prevention and reduction of the danger posed by natural disasters ; Conceptual elements for the prevention and reduction of the damages caused by natural disasters.-- Meetings: Conference "Objectives and Scope of the Reform of the Chilean Water Code" ; Seminar on Trade Agreements and Public Services ; Seminar on the Regulation of Infrastructure Services: Water and Electricity.-- Internet and WWW news