Due to the extensive slope failure caused by the Chi-Chi earthquake, massive amount of deposit material posed severe threat of potential debris flow hazard. In this study field investigations were conducted to identify and inventory the potential debris flow locations in the central region of Taiwan hit by the earthquake. Models for evaluation of hazard potential and risk were developed and risk assessments of the investigated areas were performed accordingly. The debris flows were rated as with high, medium, and low risk. A total number of 148 locations were investigated, and 49 locations were rated as with high risk. It is suggested that the locations with high risk should be mitigated with highest priority and more researches are need for the newly increased slope-type debris flow.