Abstract
For the realization of efficient organization disaster countermeasures, it is necessary to analyze/evaluate past disaster response, identify problems, and examine their solutions. In this paper, the records of the Niigata Prefectural Government disaster response actives during the Mid Niigata prefecture Earthquake in 2004 are analyzed from five viewpoints (constitution, job analysis, business amount evaluation, information management, and mutual relation). The reliability of those records was verified through hearings with the relevant prefectural government staff. Based on the analysis and discussions, the authors make the environment to propose countermeasures that aim at improving the organization disaster prevention power.