Abstract
An objective of this study was to analyze which flow fields of a river were preferred by children for their water activities through a field research at the middle of the Doki River located in Manno Town, Kagawa Prefecture. In order to analyze the children' preferences on each age group for flow fields to play in water, the Jacobs' Indices were calculated by flow fields played by children classified by water depth and velocity. The following findings are obtained; 1) In case of under six years old, flow fields that water depth was less than 30 cm and water velocity was less than 0.1 cm/s were selected specifically for their activities. 2) Over 7 years old children come to prefer deeper and faster flow fields.
