The objectives of the Restoration Four Major Rivers project are to make a comprehensive management system for rivers in South Korea, and to promote a domestic economy and employment. There are four main issues which should be addressed to successfully complete the project. First, effective communication should be made between the numerous and various participants involved in the huge project. Second, an integrated management system for the project is required to overcome the manpower shortage of the project owners. Third, even though the project is quite huge, it has to be completed approximately in two years. Fourth, the project cost should be effectively managed because the budget for the project is very tight especially in the recent global financial crisis. To address the issues, this study developed the integrated management system for the project, which is called the FIMS (Four major rivers Integrated project Management System). The FIMS consists of the total management module, project owner module, and contractor module. Each module provides project information such as schedules, cots, and completion status, which enables the integrated management of the project. With the FIMS, the various owners and contractors of the project will be able to manage the huge project more efficiently, which is critical to successfully complete the project in the planned schedule and budget.