The danger of natural disaster such as slope failure, rock fall, landslide and debris flow is evaluated by topographic analysis of aerial photographs and geologic analysis based on field surveys. These methods require high-level technique of engineers and provide only qualitative results in general. Therefore, we must establish convenient and quantitative method. Geomorphometry using a digital elevation model was implemented to evaluate the danger of natural disaster in some areas. It seems that several geomorphometric parameters indicate geomorphologic features leading to natural disaster. The values of these parameters are consistent with the evaluation results of the danger of natural disaster obtained from field surveys.

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