The objectives of the symposium , sponsored by Wuhan University, International Water Resources Association. IWRA, International Association of Hydrological Sciences (IAHS), are focused on global and regional water security guarantees, for basin water cycle and ecological hydrological process, flood and drought disaster-formed mechanisms and ecological system of response. The Symposium will be held in two cities, i.e. Wuhan and Yichang. Located in the intersection of the Yangtze River and Hanjiang River, Wuhan is the capital of Hubei province and center city in central China region. Located in the upper and middle reaches of the Yangtze River and 300km far from Wuhan, Yichang is known as "the hydroelectric city". The Three Gorges Dam and Gezhouba Reservoir are located in the territory of Yichang, which is also the only National Health and Civilized City in Hubei Province.