Kapuas River sediment settling velocity analysis with withdrawal tube

Abstract Kapuas River is a river with a high level of sedimentation. In the process of sedimentation, one of the factors that determines the sedimentation time is the sediment settling velocity. Estimation of effective sediment deposition time could be calculated by collecting the sediment settling velocity data. A thorough laboratory research is needed to determine the value of sediment settling velocity. The analysis from the field and laboratory research showed that sediment settling velocity is related to salinity, sediment concentration, water depth, and flow velocity. This study focuses on the relationship between sediment concentration and sediment settling velocity. Laboratory research was conducted using variations of sediment concentration. The research showed that maximum sediment settling velocity with the value of 0.4133 mm/s is obtained from concentration sediment of 9380.75 ppm. Moreover, the sedimentation process will be formed faster as the sediment settling velocity increases.