Time Series Variation of Flood Exposure Induced by Flood Prevention Projects

Abstract

 In order to verify the hypothesis that flood risk structure is changing from high frequency, low damage type to low frequency, high damage type, we plot flood risk curves in 1980, 1985, 1990, 1995, 2000, and 2005, respectively in Kosen town in Kumamoto city. These results show that the flood risk basin triggered to change risk structure from high frequency, low damage type to low frequency, high damage type