Abstract -The hydraulic facilities in central Taiwan suffered from the severest damages in decades after the strike of the 921 Earthquake and the ravage of a few subsequent typhoons such as TORAJI, NARI, LEKIMA. In order to prevent secondary damages and mitigate the possible damages in the future, this project reviewed the hydraulic facilities such as riverside and seashore dikes, embankments, drainage and irrigation systems in Da-an River, Da-jia River, Wu River and Jhuo-shuei River basins
This article is a summary of first year studies in a three-year project. The damages to hydraulic facilities after the 921 earthquake were investigated. The possible secondary damages and their remedies were proposed. As for the completed, ongoing and upcoming reconstruction projects, a complete review and feasible rehabilitation measures (include engineering and non-engineering methods) were proposed, especially for those severely damaged rivers. Finally, a hazard mitigation, preparation and rehabilitation plan was recommended to minimize the probable damages to hydraulic facilities after future earthquakes.