SWAT Literature Database for Peer-Reviewed Journal Articles

Title:Assessment of hydrology and sediment yield in the Mekong River Basin using SWAT model 
Authors:Sok, T., C. Oeurng, I. Ich, S. Sauvage and J.M. Sánchez-Pérez 
Volume (Issue):12(12) 
Article ID:3503 
URL (non-DOI journals): 
Broad Application Category:hydrologic & pollutant 
Primary Application Category:sediment loss and transport 
Secondary Application Category:baseflow and/or other hydrologic component analysis 
Watershed Description:795,000 km^2 Mekong River, which drains parts of China (21%), Myanmar (3%), Lao PDR (25%), Thailand (23%), Cambodia (20%), and Vietnam (8%)(the percentages represent how much of the Mekong drainage area are located in each country). 
Calibration Summary: 
Validation Summary: 
General Comments: 
Abstract:The Mekong River Basin (MRB) in Southeast Asia is among the world’s ten largest rivers, both in terms of its discharge and sediment load. The spatial and temporal resolution to accurately determine the sediment load/yield from tributaries and sub-basin that enters the Mekong mainstream still lacks from the large-scale model. In this study, the SWAT model was applied to the MRB to assess long-term basin hydrology and to quantify the sediment load and spatial sediment yield in the MRB. The model was calibrated and validated (1985–2016) at a monthly time step. The overall proportions of streamflow in the Mekong River were 34% from surface runoff, 21% from lateral flow, 45% from groundwater contribution. The average annual sediments yield presented 1,295 t/km2/year in the upper part of the basin, 218 t/km2/year in the middle, 78 t/km2/year in the intensive agricultural area and 138 t/km2/year in the highland area in the lower part. The annual average sediment yield for the Mekong River was 310 t/km2/year from upper 80% of the total MRB before entering the delta. The derived sediment yield and a spatial soil erosion map can explicitly illustrate the identification and prioritization of the critical soil erosion-prone areas of the MR sub-basins. 
Keywords:SWAT, hydrology, sediment yield, Mekong River