Objectives:
Most of river basins in Indonesia, Nepal, and Japan are commonly suffered by heavy sediment production, and as a result, sediment disasters occur frequently in the three countries. The severe riverbed aggradation due to heavy sediment production makes flood inundation risk much higher. Reservoir sedimentation is also an apparent problem in these countries. A basic countermeasure for such a problem relating to sediment deposition is the sediment removal from the rivers. However,
due to the lack of perspective that sediment is a valuable natural resource, the sediment removal has not been properly managed. For example, the excessive removal of sediment leads to the degradation of the riverbed and the coarsening of the riverbed, leading to the loss of habitats for aquatic organisms as well as the collapse and non-functioning of river structures. In addition, the removed sediment is trucked to a vacant lot in local areas, and then the sediment will not be used effectively as a natural resource. The objective of this workshop is to share mutual recognition by providing presentations from three countries that have common issues in sediment disasters countermeasures and sediment resources management.

Program (Tentative):
14:00 Opening

14:10 Dr. Gyanendra Lal Shrestha (Hydro Lab, Nepal)
Headwork damages by debris flow and rehabilitation challenges in Melamchi and Hewa projects

14:40 Prof. Teuku Faisal Fathani (CEED, UGM, Indonesia)
Debris Flow Hazard Analysis toward the Implementation of Mitigation Measures in Indonesia

15:10 Prof. Adam Pamudji Rahardjo (CEED, UGM, Indonesia)
Numerical Model Study on Flow Structure around Sabo Slit Series

15:40 Dr. Kazuki Yamanoi (DPRI, Kyoto University)

      *********************

16:10 Mr. Kokoro Arimoto (Graduate school of Eng., Kyoto University),
Hiroshi Takebayashi (DPRI, Kyoto University)
Comparison of Disaster Risk on Floodplains Between Straight and Meandering Channels using Numerical Simulation

16:40 Affiliate Prof. Masaharu Fujita (CSEAS, Kyoto University)
Sustainable Sediment Management in the Kumano River basin

17:00 Discussion

17:30 Closing