Classification of Urban River Space for Environmental Improvement

Abstract

The method of classification of urban river space is investigated for the river front improvement. For a case study, UPGMA clustering method is applied to the data with 42 qualitative and quantitative attributes related to the structural characteristics of the Old-Ota River, flowing through the Hiroshima delta.
The results of cluster analysis shows that the characteristics of each cluster composed of divided sub-reaches are able to be understood quantitatively. Also, through the results for the two different years, it is suggested that the environmental improvement works could be rightly reflected in the classification of river space.