The XXXI IAHR Congress was held at the Convention and Exhibition Center (COEX) in Seoul, September 11-16, 2005. The main theme of the Congress is: Water Engineering for the Future: Choices and Challenges Papers were grouped under the following six sub themes: 'Hydroinformatics, Hydraulic Modeling, and Data: Competition or Integration?'; 'Urban and Industrial Flows: Analysis, Management, and Security'; 'Protecting and Restoring the Aquatic Environment: Water Quality and Habitat Challenges'; 'Coping with Extremes in Water Resources'; 'Coastal Development, Dynamics, and Ecosystem Fragility: A Delicate Balance'; and, 'Freshwater Crisis: Trends, Challenges, and Global Change'.
