Influence on the River Flow Rate by Long-term Land Use Change

A Case Study of Fukuoka City

Abstract

For considering the relation of the land use change and the disaster after the modernization of Fukuoka, we examined the point where land use change has influence to a river. The study area is Muromi River, Fukuoka. Four land use Maps were created from Meiji to the present. And we apply runoff coefficients to it. As a result, first, from Meiji to the present, the river flow rate is increasing in the river downstream region. Second, from Meiji to the early stages of Showa, the value of a rate of change in the upper reaches of river is big.