Abstract
The outbreak of debris flow is a threat to human life and property, especially so in reservoir areas. Hence, it is critical to evaluate the risk of debris flow in the reservoir area. In this study, data were obtained through remote-sensing imagery interpretation and field survey. By using analytic hierarchy process, determined the weight of each evaluation factor was determined. Fuzzy comprehensive evaluation was applied for the debris flow risk assessment of Wudongde reservoir in China. The evaluation results show that the reservoir area has 20 mildly dangerous mudslides, 200 moderately dangerous mudslides, and 18 severely dangerous mudslides; only one debris flow ditch is extremely dangerous. Thus, the risk of debris flow in Wudongde reservoir area is relatively small and will not have a great impact on the construction and operation of hydropower stations here.
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