The core content of risk management study in construction projects of reservoir is to identify and analyze all uncertain factors involved naturally of artificially that could posssibly cause the failure of projects and find an effective way to minimize the negative impact of these factors in order to achieve the goal of each project. Therefore, in this study we are trying to address the frequent subjects in risk management along with the characteristeds of engineering construction environment in Taiwan. We also use cases study to illustrate the appropriate methods and techniques of risk management for local construction projects of reservoir to provide the reference and application for construction work management decision making. Scope of study includes risk identification, risk analysis, and risk treatment. The risk identification is to investigate the risk recognition and identification. The risk analysis is to study the potential hazards and losses with the possible construction project failure. Risk treatment is to find better measures to fend off the malpractice in local construction in order to reduce construction project risk.