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Identify the Impacts of the Grand Ethiopian Renaissance Dam on Watershed Sediment and Water Yields Dynamics

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  • Peng Li

    (School of Public Affairs, Zhejiang University, Hangzhou 310058, China)

  • Zhen He

    (Zhejiang Forestry Technology Extended Station, Hangzhou 310020, China)

  • Jianwu Cai

    (Tongxiang Forestry Working Station, Jiaxing 314599, China)

  • Jing Zhang

    (The Rural Development Academy, Zhejiang University, Hangzhou 310058, China)

  • Marye Belete

    (College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
    Zhejiang Ecological Civilization Academy, Anji 313300, China)

  • Jinsong Deng

    (College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
    Zhejiang Ecological Civilization Academy, Anji 313300, China)

  • Shizong Wang

    (School of Public Affairs, Zhejiang University, Hangzhou 310058, China)

Abstract

The construction of large-scale water reservoir facilities in transboundary river basins always arouses intense concern and controversy. The Grand Ethiopian Renaissance Dam (GERD) under construction in Ethiopia is perceived to affect water security in Egypt and Sudan. Therefore, this study investigated the water and sediment balance of the Blue Nile River (BNR) basin and identified the spatio-temporal variation in sediment and water yields along with the construction of GERD using Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) sediment and water yield models. The BNR basin experienced increasing water and sediment yields between 1992 and 2020 and has shown a growth trend since 2020. The lion’s share of water and sediment yields come from upstream of the GERD. Taken together, these results imply that the construction of the GERD will serve as a water storage and silt trap for Sudan and Egypt.

Suggested Citation

  • Peng Li & Zhen He & Jianwu Cai & Jing Zhang & Marye Belete & Jinsong Deng & Shizong Wang, 2022. "Identify the Impacts of the Grand Ethiopian Renaissance Dam on Watershed Sediment and Water Yields Dynamics," Sustainability, MDPI, vol. 14(13), pages 1-16, June.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:13:p:7590-:d:844818
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    References listed on IDEAS

    as
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