A QUANTITATIVE EVALUATION OF THE EFFECTS OF WAKATSU PORT TRAINING LEVEE ON THE FLOW, SALINITY AND SEDIMENT TRANSPORT IN THE LOWER REACH OF CHIKUGO RIVER

Abstract

 In this study, numerical simulations of the flow and sediment transport in the lower reach of Chikugo River are implemented. The objective of this study is to evaluate functions of Wakatsu Port training levee quantitatively by considering the flow, salinity and sediment transport characteristics in the lower reach of Chikugo River. It has been found that the presence of the training levee plays a role in accelerating flow velocity of left bank side even during river floods. The result of sediment transport analysis revealed that the sediment deposition had affected the river mouth blocking before the training levee construction.