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Interactions between dam‐regulated river flow and riparian groundwater: a case study from the Yellow River, China by Tongqian Zhao; Keith S. Richards; Huashan Xu; Hongqi Meng is a Environmental Science article available to read on EtoBox.

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## Abstract The Xiaolangdi Dam, completed in 2000, is second in scale in China to the Three Gorges Project. It has generated remarkable economic and social benefits but with profound impacts to the riverine and regional environments. This paper reports field monitoring of riparian groundwater in the Kouma section of the Yellow River to illustrate the interactions between dam‐regulated river flow and riparian groundwater. The results show that the hydrological condition in riparian zones downstream from the dam has changed from a typical wet–dry cycle to a condition of semi‐permanent dryness, resulting in degradation of the typical attributes and functions of the wetland ecosystem. Hydrological processes in the riparian zone have changed from a complex multiple flooding regime to a simple regime of dominant groundwater drainage towards the river, which only reverses temporarily during the water and sediment regulation period of the dam. Data on groundwater level and groundwater quality show that there are two key points, at __ca__ 200 and 400 m from the river bank, which distinguish zones with different sensitivity to changes of river flow and indicate different interactions between

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Author

Tongqian Zhao; Keith S. Richards; Huashan Xu; Hongqi Meng

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0885-6087)

Published

2011

Language

EN

Field

Environmental Science (Physical Sciences)