Laboratory experiment in 60-degree confluence was conducted using wellgraded sand under active bedload condition for a discharge ratio of 0.6. The equilibrium channel bed was fixed and detailed measurements of mean flow were then carried out. Thereby, bed topography, two component velocity measurements, bed shear stress distribution and two counter rotating secondary flow cells are reported. Also. flow mechanism and bed morphology development in a confluence are explained. Bed shear stress maxima appear over the upward slopes along which bedload is transported away from the scour hole.