Abstract
Characteristics of river bed variation of the Kane River, which is a typical alluvial river, are discussed by using a large scale hydraulic model. The results show that the flow patterns and the river bed configurations for all cases of flood discharges are very disorderly. In order to get a better way of the stabilization of the main flow channel, some sets of layout of spur dikes are examined, and a new index is defined for quantitative evaluation of the channel stability. The index shows good agreement with the result of comprehensive observation of the river bed configurations.
