Water Stress Index application to assess water scarcity of Lower Vu Gia - Thu Bon River Basin in Vietnam

Abstract

The role of water security is the importance of sustainable development in a country. This study used the water stress index (WSI) to evaluate the status of water resources and water exploitation in the Vu Gia - Thu Bon river basin. In the study, the Vu Gia - Thu Bon river basin was divided into 15 areas to calculate the water stress index (WSI) through the following calculation: The water availability is calculated by the simulation software MIKE SHE; Demand water (domestic, industry, agriculture); Environmental water requirement (EWR) to maintain environmental stability of the river. The findings have shown that 1) There is WSI differences beetwen upper and lower Vu Gia Thu Bon; 2) In the downstream areas, WSI value is up to 4 in the dry season. WSI exceeds 1 times is during the period from April to June. Water scarcity becomes more serious than in the middle and upstream areas, especially, the exploitation area to supply water for domestic and industry in Da Nang city.

Comprehensive Assessment of Water Supply of the Turkestan Region for the Development of Economic Sectors and Recreational Tourism

“…). This indicator was used to assess water shortage in the Lower Vu-Gia-Thu-Bon river basin in Vietnam (Mai et al, 2023); geospatial water stress in Africa (Vörösmarty et al, 2005) and river basin using hydrologic unit (НUС) in the USA (Sun et al, 2008); availability of water in Jucar river basin located in the eastern part of the Iberian Peninsula in Spain (Pedro-Monzonís et al, 2014); study the water stress and drought in the Niger River Basin (Bani River, Mali) (Roudier and Mahe, 2010), water-resource potential of the catchment area of Ile and Esil river basins (Ryskulbekova, 2020;Kozykeeva and Kalmashova, 2018); anthropogenic loads on water elements of the environment in the Central Federal District of Russia (Georgiadi et al, 2021), groundwater impact assessments (GF) as a tool for sustainable water management in Mediterranean islands (Kourgialas et al, 2018), impact of tourism development on the water resources and environment of tourist destinations (Cao et al, 2023) and for a preliminary assessment of water use sustainability in industries for Italian sub-basins (Sabia et al, 2023), etc.…”