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<p>Groundwater–river water interaction is an important process in the water cycle. In the lower reaches of the Yellow River (China), water shortages can be alleviated through effective water resource management. Therefore, quantifying the exchange of water between the Yellow River and groundwater has become key. This study utilizes groundwater level data from 14 observation wells, along with Yellow River stage measurements, to analyze groundwater responses to variations in river seepage. A combination of numerical simulation, statistical analysis, and related indicators is employed. Results show that the operation of the Xiaolangdi Reservoir and water–sediment regulation practices have significantly altered groundwater recharge patterns along the Yellow River, where stable groundwater recharge is now limited to the flood season. Groundwater recharge from the river has become weaker and more lags behind flood events. Precipitation has become more important for groundwater recharge with increasing distance from the river. The lag time depends on the duration of a flood event. The lateral seepage range decreases by 400&#xa0;m between wet and dry years, although the seepage volume remains relatively constant. Seepage is strongly influenced by river level dynamics, with calmer river conditions reducing seepage.</p>

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Groundwater level response to river seepage variations in the lower reaches of the Yellow River, China

  • 期刊论文

  • 发表日期：

    2025年7月9日

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  • Jinting Huang,
  • Zhan Yang,
  • Qiu Lv,
  • Jiawei Wang,
  • Ge Song,
  • Qiang Wang

摘要

Groundwater–river water interaction is an important process in the water cycle. In the lower reaches of the Yellow River (China), water shortages can be alleviated through effective water resource management. Therefore, quantifying the exchange of water between the Yellow River and groundwater has become key. This study utilizes groundwater level data from 14 observation wells, along with Yellow River stage measurements, to analyze groundwater responses to variations in river seepage. A combination of numerical simulation, statistical analysis, and related indicators is employed. Results show that the operation of the Xiaolangdi Reservoir and water–sediment regulation practices have significantly altered groundwater recharge patterns along the Yellow River, where stable groundwater recharge is now limited to the flood season. Groundwater recharge from the river has become weaker and more lags behind flood events. Precipitation has become more important for groundwater recharge with increasing distance from the river. The lag time depends on the duration of a flood event. The lateral seepage range decreases by 400 m between wet and dry years, although the seepage volume remains relatively constant. Seepage is strongly influenced by river level dynamics, with calmer river conditions reducing seepage.