The Fourth International Conference on Estuaries and Coasts (ICEC-2012), organized by the Water Resources University, Hanoi, Vietnam (WRU) and sponsored by IRTCES, IAHR and IAHS, is held in Hanoi, Vietnam on October 8-11, 2012. Nearly 200 participants from 15 countries and regions participated in the ICEC 2012. The Proceedings of the 4th International Conference on Estuaries and Coasts include papers submitted with Conference Theme “Vision and Imagination - Water in an Era of Change”, and Sub Themes of :

- Climate changes

- Water resources and Hydrology

- Environmental and Ecological Hydraulics

- Coastal and Estuaries Hydrodynamics

- Estuaries and Coastal Management

- Design, Maintenance and Management of waterways on Estuaries and Harbors

- Research Technologies for Estuaries Engineering

- Coastal structures

- Coastal hazards