Fig. 1

Geographical location of Tra Vinh Province in the Mekong Delta, Vietnam, and DEM of Tra Vinh Province was built from terrain data with scale of 1/5000 (Source: Vietnam Department of Surveying and Mapping, 2008)
Geographical location of Tra Vinh Province in the Mekong Delta, Vietnam, and DEM of Tra Vinh Province was built from terrain data with scale of 1/5000 (Source: Vietnam Department of Surveying and Mapping, 2008)