Abstract
The heavy rain which swept over the Nagasaki districts on 23 July 1982, killed 299 persons. Voluntary organizations for disaster prevention were formed to promote and make sure of evacuation of inhabitants by leadership of Nagasaki City. However, the ratio of voluntary organizations to town associations is about 35% and this ratio is not increasing.
In this paper, analysis on voluntary organizations for disaster prevention in Nagasaki City is reported. Questionnaire survey and chart for disaster prevention in Nagasaki City analyzed by the cross method and the multi-dimensional quantification theory.