Abstract
In this research, we extracted and structured the concept of the river culture which is indefinite and elusive from a lecture collection "river culture" using the technique of the text analysis which measures a text by a computer. It is suggested that there are two major groups of concepts in river culture. One is global such as earth environments, and the other is local which focuses on living, education, etc. And concepts about the river itself, such as river engineering, exist to connect these two groups. Moreover, using the structured concept, it is possible to reach the contents of the lecture corresponding to an actual problem, and the possibility of application to practices was shown.
