- English
The Mekong Delta, South East Asia's ‘rice bowl’, sustains more than 18 million
people through its agricultural output. This yield is secured by efficient water
management systems but is susceptible to climatic changes. As Vietnam's policies
aim to optimize the delta's semi-mountainous regions reliant on rain-fed
agriculture, this study investigates drought risks and climate change impacts
on runoff in the O Ta Soc and O Tuk Sa reservoirs, An Giang Province,
Vietnam. Using simulation models, we determined runoff volumes for specific
rainfall return periods and climate scenarios for the 2030s and 2050s. Using the
storm water management model (SWMM), we simulated the reservoir water
balance considering rainfall, evaporation and infiltration. Our findings suggest
potentially increased runoff and reservoir storage due to intensified monsoons
and reduced off-season rainfall. The 4.77 km2 drainage of the O Ta Soc reservoir
could benefit from this, while the 2.55 km2 drainage of the O Tuk Sa
watershed may require alternative water-sourcing strategies. This research
offers insights for drought predictions, flood management and water strategies in An Giang. To refine these predictions, future research should consider
upcoming rainfall patterns.
- English
