Abstract
This paper investigates the relationship between the visual composition of a river environment and the size of the river, through the use of photographs taken by residents along the river. The findings obtained are as follows:
1) The residents determine, consciously or unconsciously, what conposition is favorable to them according to the river width.
2) The width of 25m or so tends to be a turning-point at which the residents change their composition, moving from one view-point to another.