STUDY ON SEDIMENT MOVEMENT IN THE MIDDLE MEKONG RIVER BASIN

Abstract

At first, we estimate the distribution of discharge using BTOP/MC model in the Middle Mekong river basin. Secondly, the amount of sedimentation runoff is calculated by Itakura and Kishi's equation with discharge data. These results can express the distribution of sedimentation movement, and can make the discussion. The region from Luang Praban to Nong Khai tends to produce enormous amount of sedimentation, the area between Nong Khai and Mukdahan has a deposition tendency, and the basin between Mukdahan and Pakse flows much sediment. Two flood peaks have different sediment runoff phenomenon.