Abstract
In this research, we focused on rivers flowing through residential areas as precious natural environments of urban areas and investigated the preference of local residents to river space in order to examine better way of river environment. In this survey, using a questionnaire, we analyzed descriptions about the space preferred by residents by text mining. The river's spatial structure was classified into three groups, "undeveloped, spaces with fireflies and private houses", "space with maintenance and hydrophilic facilities", "tourist spot with promenade and cherry blossoms", due to reasons preferred by residents. On the other hand, it was suggested that the evaluation could be lowered by factors of the surrounding space such as excessive planting, private bridges, middle and high-rise buildings, even if the favorable elements were arranged.