An Options Analysis System (OAS) is being developed to assist decision makers of the YangtzeFlood Control Headquarters with their management of excess floodwaters within the middle reach of theYangtze River in central China.The system is one of the major sub-components of the Yangtze River FloodControl Management Project jointly sponsored by the Governments of Australia, through its aid agency(AusAID) and the Peoples Republic of China.The Options Analysis System is a web-based tool that presents real time and forecast flood information,offers flood control options to decision makers and also presents the hydraulic and socio-economic consequencesof flood control options.A web environment is used for system operation, management and display,with specific users having defined access rights to various parts of the system, user tracking and recordingoptions, and system administration management features.
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