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.
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.
the Creative Commons Attribution 4.0 License.
Effects of the Three Gorges Dam Operation on the hydrological interaction between the Yangtze River and downstream aquifers
Qi Zhu
Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan 430074, Hubei, China
Ye Kang
Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan 430074, Hubei, China
Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan 430074, Hubei, China
Hui Liu
Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan 430074, Hubei, China
Luguang Liu
Hubei Water Resources Research Institute, Wuhan 430070, China
Hubei Water Resources Research Institute, Wuhan 430070, China
Xu Li
School of Earth and Environment, Anhui University of Science and Technology, Huainan, China
Eungyu Park
Department of Geology, Kyungpook National University, Daegu, Republic of Korea
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Xue Ping, Zhang Wen, Yang Xian, Menggui Jin, and Stefan Krause
Hydrol. Earth Syst. Sci., 30, 1221–1245, https://doi.org/10.5194/hess-30-1221-2026, https://doi.org/10.5194/hess-30-1221-2026, 2026
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Bedform migration affects hyporheic exchange, its impact on surface-groundwater mixing and groundwater-borne contaminant removal in groundwater-fed streams remained unclear. This study numerically simulated how bedform migration influences mixing and mixing-induced nitrate reduction. In fine-to-medium sands, higher bedform migration celerities reshape mixing zones, enhance mixing flux and extent, but reduce nitrate removal rate and efficiency, thus impairing hyporheic purification capacity.
Yiming Li, Uwe Schneidewind, Zhang Wen, Stefan Krause, and Hui Liu
Hydrol. Earth Syst. Sci., 28, 1751–1769, https://doi.org/10.5194/hess-28-1751-2024, https://doi.org/10.5194/hess-28-1751-2024, 2024
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Meandering rivers are an integral part of many landscapes around the world. Here we used a new modeling approach to look at how the slope of riverbanks influences water flow and solute transport from a meandering river channel through its bank and into/out of the connected groundwater compartment (aquifer). We found that the bank slope can be a significant factor to be considered, especially when bank slope angles are small, and riverbank and aquifer conditions only allow for slow water flow.
Xianzhang Dang, Maosheng Gao, Zhang Wen, Guohua Hou, Hamza Jakada, Daniel Ayejoto, and Qiming Sun
Hydrol. Earth Syst. Sci., 26, 1341–1356, https://doi.org/10.5194/hess-26-1341-2022, https://doi.org/10.5194/hess-26-1341-2022, 2022
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Due to the widespread salinity in coastal zones, freshwater supplies are now under pressure. This study analyzes the recharge and salinity sources of coastal groundwater (brine, saline, brackish, fresh), as well as salinization and freshening processes, using hydrochemical and isotopic methods. The evolution of saline groundwater is studied using sedimentary characteristics as multiple lines of evidence. This study can be used to better understand groundwater evolution in the coastal zone.
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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.
The Three Gorges Dam (TGD)'s impact on downstream groundwater dynamics remains poorly...