Groundwater recharge mechanisms in the lower Tri An hydropower reservoir region, Dong Nai Province, Vietnam, as studied using isotopic technique.
| Title: | Groundwater recharge mechanisms in the lower Tri An hydropower reservoir region, Dong Nai Province, Vietnam, as studied using isotopic technique. |
|---|---|
| Authors: | Dang MC; Centre For Applications of Nuclear Technique in Industry, Vietnam Atomic Energy Institute (VINATOM), Lam Dong, Vietnam.; Bui TQ; Centre For Applications of Nuclear Technique in Industry, Vietnam Atomic Energy Institute (VINATOM), Lam Dong, Vietnam.; Trinh DA; Nuclear Training Center, Vietnam Atomic Energy Institute (VINATOM), Hanoi, Vietnam.; Dang ND; Vietnam Association of Hydrogeology (VAH), Institute for Nuclear Sciences and Technology (INST), Hanoi, Vietnam.; Nguyen TT; Centre For Applications of Nuclear Technique in Industry, Vietnam Atomic Energy Institute (VINATOM), Lam Dong, Vietnam. |
| Source: | Isotopes in environmental and health studies [Isotopes Environ Health Stud] 2025 Dec; Vol. 61 (6), pp. 569-581. Date of Electronic Publication: 2025 Aug 18. |
| Publication Type: | Journal Article |
| Language: | English |
| Journal Info: | Publisher: Informa Healthcare Country of Publication: England NLM ID: 9602611 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1477-2639 (Electronic) Linking ISSN: 10256016 NLM ISO Abbreviation: Isotopes Environ Health Stud Subsets: MEDLINE |
| Imprint Name(s): | Publication: London : Informa Healthcare; Original Publication: [Switzerland?] : Basel, Switzerland ; Langhorne, PA : Published under license by Gordon and Breach Science Publishers ; Distributed by International Publishers Distributor, c1995- |
| MeSH Terms: | Groundwater*/analysis ; Groundwater*/chemistry ; Oxygen Isotopes*/analysis ; Deuterium*/analysis ; Environmental Monitoring*/methods; Rain/chemistry ; Vietnam ; Water Supply ; Seasons ; Power Plants |
| Abstract: | In recent years, climate change-induced drought has increasingly led to water shortages for domestic and industrial use in Dong Nai Province, Vietnam. Within this province, the Tri An hydropower reservoir plays a crucial role in the sustainability of regional water resources. This study aims to assess groundwater recharge mechanisms in the lower Tri An hydropower reservoir (LTAHR) region using isotopic technique based on the water stable isotope ratios (δD and δ¹⁸O) in groundwater, surface water and local precipitation. The results obtained indicate that the stable isotope values of precipitation in the region exhibit significant seasonal variations, whereas that values of surface water in the reservoir maintains more stability. On the other hand, stable isotopic compositions in groundwater are significantly influenced by monsoonal activity and temperature fluctuations. Applying the end-member mixing analysis (EMMA) method, the study revealed that surface water is the primary contributor to groundwater recharge, accounting for 60-85 %, while precipitation contributes 15-40 %, depending upon the season. Thus, the change of water storage level in the Tri An hydropower reservoir, along with the impacts of El Niño and climate variability, may disrupt seasonal water balance and significantly reduce annual groundwater recharge. |
| Contributed Indexing: | Keywords: Stable isotope; Tri An hydropower reservoir; end-member mixing analysis; groundwater recharge; influence of monsoons; δD and δ¹⁸O |
| Substance Nomenclature: | 0 (Oxygen Isotopes); AR09D82C7G (Deuterium) |
| Entry Date(s): | Date Created: 20250818 Date Completed: 20251114 Latest Revision: 20251114 |
| Update Code: | 20260130 |
| DOI: | 10.1080/10256016.2025.2515945 |
| PMID: | 40820852 |
| Database: | MEDLINE |
Journal Article