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Impacts of River Engineering on Multi-Decadal Water Discharge of the Mega-Changjiang River

Author

Listed:
  • Binbin Ma

    (State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China)

  • Wenhong Pang

    (State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China)

  • Yaying Lou

    (State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China)

  • Xuefei Mei

    (State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China)

  • Jie Wang

    (State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
    Department of Earth and Environment, Boston University, Boston, MA 02215, USA)

  • Jinghua Gu

    (State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China)

  • Zhijun Dai

    (State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
    Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China)

Abstract

Knowledge of river engineering impacts on water discharge is significant to flow guidelines and sustainable water resource managements for balancing human consumption and the natural environment. In this study, based on the collected multi-decadal discharge data at Yichang, Hankou, and Datong stations, we determined that in October, Three Gorges Dam contributed 34.4%, 24.5%, and 18.7% to the discharge decrease in the upper, middle, and lower reach, respectively, while Gezhouba Dam contributed 14.5%, 10.7%, and 10%. Danjiangkou Reservoir caused the discharge ratio of Hanjiang to Changjiang to decline from 7.2% during 1954–1973 to 6.3% during 1973–2014. Owing to growing water withdrawal and consumption, we suggest that the distribution of water diversion and consumption should be regulated to prevent the probable occurrence of the severe issue of salt water intrusion in the Changjiang Estuary in 2028.

Suggested Citation

  • Binbin Ma & Wenhong Pang & Yaying Lou & Xuefei Mei & Jie Wang & Jinghua Gu & Zhijun Dai, 2020. "Impacts of River Engineering on Multi-Decadal Water Discharge of the Mega-Changjiang River," Sustainability, MDPI, vol. 12(19), pages 1-17, September.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:19:p:8060-:d:421755
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    References listed on IDEAS

    as
    1. Yan-Fang Sang, 2013. "Improved Wavelet Modeling Framework for Hydrologic Time Series Forecasting," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 27(8), pages 2807-2821, June.
    2. Meixiu Yu & Xiaolong Liu & Qiongfang Li, 2019. "Impacts of the Three Gorges Reservoir on its immediate downstream hydrological drought regime during 1950–2016," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 96(1), pages 413-430, March.
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