Abstract
The Lower Mekong Delta in Vietnam experiences widespread flooding annually. About 17 million people live in the Delta with agriculture as the major economic activity. The suspended sediment load in the Mekong River plays an important role in carrying contaminants and nutrients to the delta and changing the geomorphology of the delta river system. In recent decades, it is generally perceived that the flow and sediment transport in the Mekong River have changed due to climate change and development activities, but observed sediment data are lacking. Moreover, after natural floodplains, the sediment deposition has replaced by dense river systems as resulting in floodplain compartments protected by embankments. This study is aimed to investigate impacts of changing water flow on erosion/deposition in the Lower Mekong Delta. We used Mike 11 hydrodynamic model and sediment transport model for simulating the flow and sediment transport. Various scenarios were simulated based on anticipated upstream discharges. Our findings provide the positive and negative impacts to the changes in sediment transport on agriculture cultivation in the Lower Mekong Delta.
Highlights
The Mekong River with the length of about 4800 km and drainage area of about 975,000 km2 flows through six countries: China, Myanmar, Thailand, Laos, Cambodia and Vietnam
The results show that during the 2002 flood season, that sediment would have been brought into the Dong Thap Muoi (DTM) through overbank flow over floodplains at the Cambodia border
According to the findings of this research, the simulated model evaluated the quantity of sediment deposition in spatial DTM floodplains from Kratie and overflow from the border of Cambodia
Summary
The Mekong River with the length of about 4800 km and drainage area of about 975,000 km flows through six countries: China, Myanmar, Thailand, Laos, Cambodia and Vietnam. The Lower Mekong Delta (LMD) with the area of about 39,000 km belongs to the Vietnamese territory from the downstream of Phnom Penh. The river splits into two main tributaries, the Tien River and the Hau Riv-. These two main rivers germinate into a dense river network on the flat lowlying and fertile delta of southern Vietnam before draining into the Southeast Sea from Vung Tau to Camau cape, Ngoc et al [1]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
