Abstract
Kokai-River, one of the tributary stream of Tone-River, flooded again due to extremely heavy rainfall by the typhoon No. 10 during 5 to 6 August 1986. The thematic mapper of Landsat-5 has just acquired very valuable data observing the damage condition immediately after the flood. This brief paper overviews the damage condition of the flood by multispectral and multitemporal analyses using TM data taken before and after the flood. The distribution of the submerged areas by river-water and rainwater are clearly discriminated using the multispectral classification procedure with two TM data before and afer the flood. The multitemporal analysis using two TM data afer the flood reveals clear difference of the damage condition between the paddy field submerged by river-water and that submerged by rainwater.
