Methodology for flood damage assessment using GIS and distributed hydrologic model

ABSTRACT

Flood damage assessment has great importance in flood disaster mitigation. After a flood event, quick damage assessment is important for many purposes such as flood relief work, estimation of financial supports for affected people, evaluation of flood insurance, etc. Prior estimation of flood damage based on forecasted rainfall help taking preventive measures. Also, it supports in decision making for structural measures for flood control. In this study, a flood damage assessment methodology is proposed which is a combination of hydrologic model and damage assessment model. The methodology can be used for quick assessment of damage after a flood event as well as flood for forecasted flood events. The methodology is being applied in one river basin in Japan. The detailed GIS database and some preliminary results of flood model are presented in this paper