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Variation of the Water Level in the Yangtze River in Response to Natural and Anthropogenic Changes

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StateKey Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
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Changjiang River Scientific Research Institute, Changjiang Water Resources Commission, Wuhan 430010, China
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Department of Earth Sciences, Vrije Universiteit Amsterdam, Boelelaan 1085, 1081 HV Amsterdam, The Netherlands
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Key Laboratory of Engineering Sediment, Tianjin Research Institute for Water Transport Engineering, Ministry of Transport, Tianjin 300456, China
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Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province, School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410114, China
*
Author to whom correspondence should be addressed.
Water 2019, 11(12), 2594; https://doi.org/10.3390/w11122594
Received: 26 October 2019 / Revised: 2 December 2019 / Accepted: 3 December 2019 / Published: 9 December 2019
(This article belongs to the Section Hydrology and Hydrogeology)
The water level in the Yangtze River has significantly changed due to the effects of varied precipitation and dam operations, which have exerted significant effects on irrigation, navigation, and ecosystems. Based on the measured data and the proposed calculation method, we analyzed the adjustment mechanisms of the seasonal water level in the whole Yangtze River. The results were as follows. During the dry season, the rising precipitation and dam operation both increased the water level in the upper reaches and in the reaches from the Jianli to Datong stations during 1981–2014. Moreover, dam operations were the dominant factor (except at Datong station). In the reaches from the Yichang to Shashi stations, dam operations are the reason for the reduction of the measured water level in the dry season, while the rising precipitation had an opposite influence. During the flood season, dam operations helped to reduce the water level from the upper reaches to the estuary during 1981–2014, while climate variation stresses adversely affected the entire river basin. In the reaches between the Luoshan and Jianli stations, climate variation is the dominant factor for the increased water level during the flood season, while dam operation is the reason for the reduced water level at the other six hydrological stations. View Full-Text
Keywords: water level; human activities; climate variation; Yangtze River water level; human activities; climate variation; Yangtze River
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Liu, J.; Deng, J.; Chai, Y.; Yang, Y.; Zhu, B.; Li, S. Variation of the Water Level in the Yangtze River in Response to Natural and Anthropogenic Changes. Water 2019, 11, 2594.

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