Sytharith PEN graduated with his PhD from River and Watershed Engineering Laboratory, Hokkaido University, Japan, in 2018. Dr PEN is currently a researcher/lecturer at the Faculty of Hydrology, Institute of Technology of Cambodia. His research interests are river mechanics and morphology; theoretical and computational sediment transport model; river engineering; computational hydraulics engineering; and hydrology and watershed management. He has extensive experience in various irrigation and water resources development projects and is an active member of a research team focusing on the coastal region.