Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 30, issue 7
Articles | Volume 30, issue 7
https://doi.org/10.5194/hess-30-2037-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-30-2037-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 30, issue 7
Research article
 | 
15 Apr 2026
Research article |  | 15 Apr 2026

Effects of the Three Gorges Dam Operation on the hydrological interaction between the Yangtze River and downstream aquifers

Qi Zhu, Ye Kang, Zhang Wen, Hui Liu, Luguang Liu, Yan Li, Xu Li, and Eungyu Park

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Short summary
The Three Gorges Dam (TGD)'s impact on downstream groundwater dynamics remains poorly understood. We established monitoring profiles in the first downstream river-lake wetland to spatially quantify groundwater response for the first time. With numerical simulation, how each operation period affects hyporheic exchange is deeply studied. We found TGD suppresses river-aquifer exchange, particularly during dry-season. These findings provide critical insights into dam effects on watershed hydrology.
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