This paper analyzes the flood situation of the Yoshino River in the Meiji era. From the result of the analysis of the 1911 flood of the Yoshino River in the Meiji era, how to raise the levels of disaster reduction technologies and skills of the flood-prone community are examined. The flood hazard map which the result of the analysis of the past floods is applied will help the planning of the evacuation of the people from the flood-prone community.
It is shown that the levels of disaster reduction technologies and skills of a present-day flood-prone community may be raised, and the damage from a flood may be able to be reduced by analyzing the condition of the past floods in detail.