Hydrological Regime Variability between the Tien and Hau Rivers under the Impact of Anthropogenic Activities and Climate Change

Authors

  • Nguyen Dam Quoc Huy

    1. Department of Oceanology, Meteorology and Hydrology, Faculty of Physics-Engineering Physics, University of Science, Ho Chi Minh City 700000, Vietnam；2. Viet Nam National University-Ho Chi Minh, Ho Chi Minh City 700000, Vietnam；3. Institute of Coastal and Offshore Engineering, HCM City 700000, Vietnam
  • Tran Thi Kim

    Faculty of Environment, Ho Chi Minh City University of Natural Resources and Environment, Ho Chi Minh City 700000, Vietnam
  • Dang Truong An

    1. Department of Oceanology, Meteorology and Hydrology, Faculty of Physics-Engineering Physics, University of Science, Ho Chi Minh City 700000, Vietnam；2. Viet Nam National University-Ho Chi Minh, Ho Chi Minh City 700000, Vietnam

DOI:

https://doi.org/10.30564/jees.v7i5.8707
Received: 10 February 2025 | Revised: 24 February 2025 | Accepted: 26 February 2025 | Published Online: 23 April 2025

Abstract

The distribution of flow discharge between the Tien and Hau Rivers in the Vietnamese Mekong Delta (VMD) plays an important role in Vietnam’s agricultural and aquaculture production activities. However, recent variations in water levels and flow patterns, driven by both human activities and climate change (CC), have posed significant challenges for water resource management. This study evaluates the impacts of unsustainable exploitation and CC on the hydrological regime of the Tien and Hau Rivers using non-parametric statistical methods. Long-term water level data (1978–2023) from Tan Chau, Chau Doc, and Vam Nao observation stations were analyzed using the Mann-Kendall test (MK), Sen’s Slope (SS) estimator, and Pettitt’s test to detect trends, quantify change magnitudes, and identify abrupt shifts. The results indicate a significant decline in flood-season water levels, with annual decrease rates ranging from 41.5 to 72.9 mm in September and November. Conversely, a slight increasing trend in water levels was observed in the dry season (DS) during the studied time. Additionally, findings reveal that the upstream Tien River exerts greater control over the hydrological regime in the Vam Nao River. These insights contribute to disaster risk assessment, sustainable water resource planning, and ecological risk evaluation. Furthermore, the results contribute to providing a foundation for applying hydrological and hydraulic models to forecast hydrodynamics, thereby supporting effective water management strategies and mitigating flood and dry risks in the VMD.

Keywords:

Vietnamese Mekong Delta; Water Flow Distribution; Non-Parametric Tests; Upstream; Vam Nao

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How to Cite

Dam Quoc Huy, N., Thi Kim, T., & Dang Truong An. (2025). Hydrological Regime Variability between the Tien and Hau Rivers under the Impact of Anthropogenic Activities and Climate Change. Journal of Environmental & Earth Sciences, 7(5), 96–107. https://doi.org/10.30564/jees.v7i5.8707

Issue

Vol. 7 , Iss. 5 (May 2025): In Progress

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Article

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Copyright © 2025 Nguyen Dam Quoc Huy, Tran Thi Kim, Dang Truong An

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This is an open access article under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) License.

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