This project "The observation and measurement of sediment transport and the studies of application and development of density current simulation model in Nanhua Reservoir". Two monitoring stations at section 3 and section 13 were builded and one inlet was builded with automatic SSC monitoring. Full run-off SSC data was collected during typhoon events. Sediment data were further used as input data and calibration data for 2D and 3D numerical models of sediment transportation. The 2D model RESED2D well developed and verified in previous study continues to provide information on sedimentation and relevant data for 3D input. The 3D model was further developed to more reasonalbly deal with bed boundary condition.