The heavy rainfall caused by a front attacked the north Nagano prefecture and the south-west Niigata prefecture, in July, 1995.
It caused gigantic sediment movement in Hime-kawa drainage area, and gave severe damage to the houses, road, railroad and many other infrastructures. Although there occured lots of debris-flows and landslides, no one was killed in this disaster.
Therefore, in the interest of disaster prevention planning, we carried out a questionnaire on the action taken by the inhabitants to evacuate from the sediment-related disasters, and grasped the actual state of debrisflow warning and evacuation at that time.
