Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 30, issue 3
Articles | Volume 30, issue 3
https://doi.org/10.5194/hess-30-671-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-30-671-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 30, issue 3
Research article
 | 
05 Feb 2026
Research article |  | 05 Feb 2026

Mitigating the impact of increased drought-flood abrupt alternation events under climate change: the role of reservoirs in the Lancang-Mekong River Basin

Keer Zhang, Zilong Zhao, and Fuqiang Tian

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Short summary
Focusing on Drought-Flood Abrupt Alternation (DFAA) under climate change, this study investigates the mitigating role of reservoirs on DFAA in Lancang-Mekong River Basin. The drought-to-flood (DTF) probability is higher than the flood-to-drought (FTD) at all intensities. Reservoirs markedly reduce wet season’s FTD and year-round DTF, effectively shorten DFAA’s monthly span. The reservoir's mitigating effect on the total risk of DFAA is positively correlated with their total storage.
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